Pro Spot i4 User manual

High Frequency Inverter
Resistance Spot Welder
All Info Copyright © Pro Spot International Inc.
Instruction Manual
Version 3.6n

All Info Copyright © Pro Spot International Inc.
Quick start instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Safety
2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.0 Safety & Environmental Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.2 Warnings and important notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.3 Safety devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.3.1 Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.3.2 Overheat protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3 Installation
3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.2 Packaging and delivery inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.3 Welder assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.4 Connection of electrical supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.4.1 Electrical Plug / Extension cords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.5 Connection of pneumatic air supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4 Operation
4.1 Before you begin welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.2 About your welder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.2.1 Welder Overview & Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2.2 Getting familiar with your welder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.2.3 i4 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.2.4 Indications on the Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.2.5 i4 Service Panel Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.3 Turning on the welder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
4.4 Choosing the weld mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.5 Setting the pneumatic air pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.6 Setting/Changing the weld program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.7 Setting the weld time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.8 Setting the default weld programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
5 Double-Sided Welding
5.1 PS-500 Double-Acting Spot Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
5.1.1 PS-500 Component Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
5.1.2 Using the Double-Acting Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
5.2 Extension Arms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
5.2.1 Switching to extension arms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
5.2.2 Extension Arms and Welding Electrodes . . . . . . . . . . . . . . . . . . . . . . . . . . .19
5.3 PS-500 Electrode Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
5.4 Removing Welding Electrodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
5.5 Welding Electrode Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
5.6 Wheel House Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
5.7 X-Adapter (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5.7.1 Attaching the X-Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5.7.2 Using the X-Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Table Of Contents
i4
Page 2
All Info Copyright © Pro Spot International Inc.
6 Single-Sided Welding
6.1 Single-Sided Welding Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
7.1 i4 Login Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
7.2 Turning the Login Function Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
8.1 i4 Log Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
8.2 Download the Log file for print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
7.3 Turning the Login Function On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
7.4 Switching Passwords. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
7.5 Setting Up Technician User Passwords. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
6.2 Single-Sided Spot Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
6.3 Stud Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
6.4 Nut Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
6.5 Dent Pulling with Spot Hammer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
6.6 Moulding Clip Rivet Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
6.7 Dent Pulling with Washers and Slide Hammer with Hook . . . . . . . . . . . . . . . . . . . .29
6.8 Contact Shrinking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
6.9 Carbon Rod Shrinking / Stretching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
6.10 Stitch Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
6.11 Pro Pull Dent Pulling (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
6.11.1 Selecting Pro Pull Weld Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
6.11.2 Pro Pull Component Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
6.11.3 Pro Pull Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
6.11.4 Dent Pulling with Pro Pull . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
6.11.5 Paintless Dent Pulling With Pro Pull . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Table Of Contents
7 i4 Login Feature
8 i4 Log Feature
i4
5.7.3 X-Adapter Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
5 Double-Sided Welding (Cont.)

Page 3
All Info Copyright © Pro Spot International Inc.
Quick start instructions
WARNING! Before turning the welder on, make sure it is connected
to proper electricity by certified people. Connect air to the air inlet on
back panel.
i4
Navigation
button Right
Navigation
button Left
Help / Instructions
button Left
Single Sided
button
Two Sided
spot gun button
Navigation button
Up
Navigation button
Down
Navigation button
Closed Circle
Navigation button
Open Circle
Display Screen
ATTENTION! Avant d'allumer le soudeur, verifiez qu'il est connecté à
l’électricité propre par des personnes certifiées. Connectez l’air à
l'entrée d'air au panneau d’arrière.
1. Turn the power switch on the front panel ON.
2. Connect Air to the air inlet located on the back panel.
3. During the test procedure a “Push Help to change language” prompt appears
on the display screen . Click the Help button to access the System settings screen
where the language can be changed. Select desired language by clicking the
“Change Language” button, then exit.
4. After login procedure, the software defaults to HSS/Galv. Two Sided weld mode.
5. The welder is now ready to operate. Make sure air pressure is set at 90 PSI.
Place the welding gun at the weld area and press the lower trigger button to weld.
The upper weld button is for spreading the electrodes open for better access.
6. There are 6 different power levels pre-programmed into the i4. The software
defaults to 0.7mm weld program, the thickness of one of the two layers of
metal you are welding . To change between preset power settings press the
Up Navigation button ( fig. 1.1). The programs will switch between 0.7, 1.0, 1.2,
1.5, 2.0 and 2.5mm metal thickness.
7. To go to the next weld mode: “Mild Steel” press the Right Navigation button,
(fig. 1.2). The same weld power levels are available in each weld mode. Navigate
with the Right and Left arrow buttons and select weld power with the “Next
Program” button (Up Navigation button).
8. Press the “Help” button anytime for instructions.
9. Turn the water cooling switch ON for welding jobs over 7 welds. Turn it OFF 5
min. after completion.
Figure 1.1
Figure 1.2
All Info Copyright © Pro Spot International Inc.
The i4 Spot welder is used by body shops to duplicate
the welding procedure used by the car manufacturers.
Use of the equipment that is contrary to the instructions
in this manual can cause personal injury and/or
machine damage.
Pro Spot International, Inc. can in no way be held
responsible for intentional or unintentional damage, and
consequent unlimited loss of profit, loss of income, loss
of business opportunity, loss of use, etc. that originates
from incorrect use of this equipment ir its use in a man-
ner not intended.
Warranty
Pro Spot International, Inc. offers a two-year guarantee
from the date of delivery of the new welder. This guar-
antee covers material defects and assumes normal care
and maintenance.
The guarantee assumes that:
•the equipment is correctly installed and inspected
•the equipment has not been altered or rebuilt without
approval from Pro Spot International, Inc.
•genuine Pro Spot International, Inc. spare parts are
used to make repairs.
•operation and maintenance has been carried out
according to the instructions in this manual.
All claims on warranty must verify that the fault has
occurred within the guarantee period, and that the unit
has been used within its operating range as stated in
the specifications. All claims must include the product
type and serial number. This data is stamped on the
name plate.
Note: This instruction manual provides advice as well
as instructions for installation, operation, maintenance
and troubleshooting.
IMPORTANT! Read this manual carefully to
become familiar with the proper operation of
the welder. Do not neglect to do this as
improper handling may result in personal
injury and damage to the equipment.
The drawings in this manual are presented for illustra-
tive purposes only and do not necessarily show the
design of the equipment available on the market at any
given time. The equipment is intended for use in accor-
dance with current trade practice and appropriate safety
regulations. The equipment illustrated in the manual
may be changed without prior notice.
The contents in this publication can be changed without
prior notice.
This publication contains information that is protected by
copyright laws. No part of this publication may be repro-
duced, stored in a system for information retrieval or be
transmitted in any form, in any manner, without
Pro Spot International, Inc.’s written consent.
Conformity with directives and standards:
i4 complies with CE standards.
Congratulations on acquiring your new PRO SPOT i4 welder!
Team Pro Spot looks forward to supporting you.
You have a welder and support group that will increase your productivity. The integrated features, ease of use,
speed and quality welds that your i4 offers will become an important part of your business.
The following information will be needed when you call Pro Spot:
* MODEL TYPE: i4
* SERIAL NO:________________
The serial number is located on the back of the unit.
For parts or service contact your local distributor,
Local number: ____________________________
or in the U.S. call: Toll free:1-877 PRO SPOT or 1-760-407-1414
for a customer service representative.
Visit Pro Spot On-Line: www.prospot.com E-mail: [email protected]
NOTE: You can now order parts online at: prospot.com/store/
1 Introduction Page 4
1 Introduction
i4
IMPORTANT! Lisez ce Mode d’Emploi
attentivement afin de vous familiariser avec
le bon fonctionnement du soudeur. Ne
négligez pas de le faire puisque une mau-
vaise manipulation peut conduire aux
blessures et dommages à l'équipement.

2 Safety Page 5
All Info Copyright © Pro Spot International Inc.
The i4 Spot welder has been designed and is tested to meet strict safety require-
ments. Please read the following instructions carefully before operating the i4 and
refer to them as needed to ensure the continued safe operation of the welder.
Information provided in this manual describes the suggested best working prac-
tices and should in no way take precedence over individual responsibilities or
local regulations.
The i4 Spot Welder is designed to comply with all applicable safety regulations for
this type of equipment. During operation, it is always each individual’s responsibil-
ity to consider:
•Their own and other’s personal safety.
•The safety of the welder through correct use of the equipment in accordance
with the descriptions and instructions provided in this manual.
By observing and following the safety precautions, users of the i4 Spot welder will
ensure safer working conditions for themselves and their fellow workers.
The following types of safety signs are used on the equipment and in Pro Spot’s
instruction manuals:
Prohibited.
Prohibits behaviour that
can cause injury.
Caution.
Read instruction manual.
Command.
Calls for a specific action.
Warning.
Notice of personal injury risk and
or damage to equipment.
Warning.
Some parts of the welder may become
hot after prolonged use.
2.2 Warnings and important notices
2.1 General
2.0 Safety & Environmental Specifications
2 Safety
i4
The i4 Spot welder is designed for indoor use - Protection Degree IP21S.
The i4 Spot welder is designed to operate from -10º C to 40º C.
The unit may be stored and transported in an ambient temperature from -20º C
to +55º C. The unit can be operated at 95% Relative Humidity (RH). For operation
above 1000m consult the manufacturer. Do not operate the unit on a slope
of more than 10º. The unit meets the requirements of IEC|EN60974-1 2005 third
edition and UL60974-1 2nd edition. E.M.C. classification is C1SPR11.
NOTE: Heating tests were performed at room ambient temperature and the duty
cycle at 40º C has been determined by simulation.
!
! !
!Attention!
Lire Mode d’Emploi.
Interdit.
Interdit aux comportements
qui peuvent provoquer des blessures.
Commande.
Appelle à une action spécifique.
Avertissement.
Avis de risque de blessure personnelle
et / ou d’endommager l'équipement.
Avertissement.
Certaines parties du soudeur peuvent devenir
chaudes après une utilisation prolongée.
2 Safety Page 6
All Info Copyright © Pro Spot International Inc.
The following warnings and important notices are used in the instruction manual:
WARNING! Do not operate or place
WARNING! Do not place the welder on
WARNING! All electrical connections
must be made by a qualified electrician.
Risk for electrical shock.
WARNING! Loose cables and hoses
present tripping risks. Risk for injuries.
WARNING! Make sure to use welding
goggles when spot welding. The sparks
might otherwise injure the eyes.
WARNING! Sparks from welding
WARNING! Risk for damage to materials
close to the weld, e.g to glass or textiles.
WARNING! For proper cooling efficiency,
never operate the welder without connecting
it to the compressed air source.
WARNING! All service and maintenance
must be carried out by Pro Spot service
personnel and service support. Risk for
electrical shock.
WARNING! Unplug the welder from the
wall outlet before servicing, cleaning or
maintenance. Risk for electrical shock.
IMPORTANT! The i4 welder may only be
used by qualified personnel. The user of
the welder must have knowledge of spot welding
and of alignment of collision-damaged vehicles.
IMPORTANT! Do not turn off the welder
IMPORTANT! The air must be clean and
free from oil and moisture. Use filter.
i4
the welder near water, in wet locations
or outdoors. Risk for injuries or damage
to the welder.
unstable or uneven ground. The welder
might tip causing personal injuries or
serious damage to the welder.
could start a fire. Risk for injuries.
while cooling is activated!
ATTENTION! Ne pas faire fonctionner le soudeur
près de l'eau, en voie humide , ou à l’éxterieur .
Risque de blessures ou de dommages au
soudeur.
ATTENTION! Ne placez pas le soudeur sur un sol
instable ou irrégulière. Le soudeur peut basculer
causant des lésions corporelles ou des dommages
graves au soudeur.
ATTENTION! Toutes les connexions électriques
doivent être faites par un électricien qualifié.
Risque de choc électrique.
ATTENTION! Câbles et tuyaux lâches présentent des
risques de déclenchement. Risque de blessures
ATTENTION! Veuillez utiliser des lunettes de soudeur
sur place. Les étincelles pourraient autrement blesser
les yeux.
ATTENTION! Étincelles de soudure pourrait provoquer
une incendie. Risque de blessures.
ATTENTION! Risque de dommages aux matériaux à
proximité de la soudure, par exemple verre ou textiles.
ATTENTION! Pour refroidissement efficace, ne jamais
soudeur sans attacher à la source d'air comprimé.
ATTENTION! Tout le service et l'entretien doivent être
effectués par personnel et soutien de service Pro
Spot. Risque de choc électrique.
ATTENTION! Débranchez le soudeur de la prise
murale avant l'entretien, ou nettoyage. Risque de
choc électrique.
IMPORTANT! Le soudeur i4 peut seulement être utilisé
par personnel qualifié. L'utilisateur du soudeur doit
avoir une connaissance de soudage par points et
l'alignement des véhicules endommagés par collisions.
IMPORTANT! N'éteignez pas le soudeur pendant que le
refroidissement est activé!
IMPORTANT! L'air doit être propre et sans huile et
humidité. Utilisez un filtre

2 Safety Page 7
All Info Copyright © Pro Spot International Inc.
When the Spot Gun is used continuously, the welding cables and the power trans-
former get hot. To prevent the welder from malfunctioning due to overheating, it is
cooled using the built-in air, and liquid cooling systems. The air cooling system
cools the welding cables and the water cooling system coold the transformer,
inverters, cable ends and the spot gun.
i4 features an air cooling system that cools all four welding cables.There are two
different Cooling Modes: "AUTO" (default) and "MANUAL". In the "AUTO" mode,
the air cooling system turns on automatically after 15-30 welds and forced air
starts to flow through the cable. In the "MANUAL" mode the cooling system oper-
ates continuously.
To switch to “MANUAL” mode:
1) Restart the software and press “HELP” button while start-up screen is dis-
played. “System Settings” screen will display (fig. 2.1).
2) Select “System Settings” by pressing the Navigation button, Up (fig. 2.2).
3) Select “Manual Cooling” by pressing the Navigation button, Down (fig. 2.3).
AIR COOLING will activate.
The Liquid Cooling system is turned ON and OFF with the switch on the Front
Panel (fig. 2.3a). The water tank is located in the rear of the unit, inside the
center column. The watertank should be filled with a 50/50 water & antifreeze
solution (fig. 2.3b).
The built-in overheat protection is designed to prevent damage to the welder
caused by overheating. The system will automatically shut off the welder when a
pre-programmed temperature is reached (fig.2.4). DO NOT turn off the welder! It
needs the cooling air to cool the machine faster. Wait until the display returns to
normal (usually 4-8 min.) Shorter duty cycles (due to short weld times and “rest”
periods between welds) will allow the cooling system to function better and may
prevent the auto-shut-off. (Consistently check weld strength by performing
destructuive tests).
IMPORTANT! Do not turn off the welder while the cooling system is
activated!
IMPORTANT! If the thermal breaker has switched off the welder,
please contact Pro Spot's authorized service personnel
Figure 2.1
Figure 2.4
2.3.2 Overheat protection
2.3.1 Cooling
2.3 Safety devices
IMPORTANT! Leave the water cooling ON for faster cool down
Figure 2.2
Figure 2.3
Figure 2.3a Figure 2.3b
i4
For continuous use do not exceed 3 welds per minute. For operation not exceeding
60 minutes: 6 welds per minute. Welding current 9270A for continuous use
12,500A maximum at 1 weld per minute for 5 minutes max.
IMPORTANT! N'éteignez pas le soudeur pendant que
le système de refroidissement est activé!
IMPORTANT! Si le disjoncteur thermique a éteint le soudeur, s'il vous
plaît contactez personnel de service autorisé Pro Spot.
IMPORTANT! Laissez couler l'eau de refroidissement à l'intention
de se refroidir plus rapidement.
3 Installation
The i4 Spot welder is inspected and tested prior to leaving the factory to
guarantee consistent quality and the highest possible reliability. Follow the instal-
lation tips and operating instructions below to ensure user safety and proper
welder performance.
WARNING! Do not operate or place the welder near water, in wet
locations or outdoors. Risk for injuries or damage to the welder.
WARNING! Do not place the welder on unstable or uneven
ground. The welder might fall causing personal injuries and damage to
the welder. Do not operate on a slope of more than 10º.
A grounded electrical plug must be installed (refer to section 3.4 “Connection of
electrical supply”).
Check the contents of the shipping container against the packing list, consign-
ment note, or other delivery documentation to verify that everything is included
and in the correct quantity. Check the i4 Spot Welder carefully to make sure that
no damage has occurred during transport. If anything is damaged or missing, the
welder may be unsafe to use till the part is repaired or replaced. If anything is
missing, please contact your supplier. Remove all packaging material from the
welder.
For your convenience, i4 welder ships fully assembled.
Due to differences in wiring codes and connection methods, no electrical plug
comes with the welder. Consult a certified electrician for proper installation of the
electrical plug.
Insert the support arm (boom) as shown in Figure 3.1
Figure 3.1
IMPORTANT! It is the responsibility of the owner to ensure that
the equipment has been installed as specified in the instructions pro-
vided. It is also the owner's responsibility to ensure that the welder
is inspected in accordance with applicable regulations before it is
put into service. Do not use for thawing out frozen water pipes (17.1)
ATTENTION! Ne pas faire fonctionner le soudeur près de l'eau, en voie
humide ou à l'extérieur. Risque de blessures ou de dommages au soudeur.
ATTENTION! Ne placez pas le soudeur sur un sol instable ou irrégulière.
Le soudeur peut tomber causant des dommages graves au soudeur.
Ne pas utiliser sur une pente de plus de 10º
IMPORTANT! C'est la responsabilité du propriétaire de s'assurer que
l'équipement a été installé comme spécifié dans les instructions fournies.
C'est aussi la responsabilité du propriétaire de s’assurer que le soudeur est
inspecté conforment à la réglementation applicable avant qu'il ne soit mise
en service. Ne pas utiliser pour dégeler les conduites d'eau congelées (17.1)
Page 8
All Info Copyright © Pro Spot International Inc.
3.3 Welder assembly
3.2 Packaging and delivery inspection
3.1 General
3 Installation
i4

3 Installation
The i4 Spot Welder requires one of the following voltage / frequency combina-
tions:
208-240V 50/60 Hz U.S.A., Canada, Japan OR
400-420V 50/60 Hz Europe, Australia
Note: Make sure that the facility supply voltage and frequency are the same as
shown on the welder name plate (see section 4.2 “About your welder”).
The power supply must have a ground connection. The supply must also be
protected as follows:
The 208-240V 3-Phase or Single-Phase require 60A breaker.
The 400V and 420V supply require a 32A slow blow fuse (Circuit
breaker 32D).
WARNING! All electrical connections must be made by a qualified
electrician. Risk for electrical shock.
1. Connect the green wire to ground.
Note: Make sure that the supply cable is at least 6 AWG at 208V and 400 V.
The i4 is rated for over voltage category III and polution degree 3.
2. If an extension cord is used with the welder, ensure that the length of the
extension cord does not exceed 10 m (30 ft) and it meets the specifications of
Item 1 above. The cord must also be grounded. Consult
an electrician for safe and proper installation of the electrical plug.
NOTE: When connecting the welder to Single-Phase input power, install Red and
White wires. Connect Green to earth ground! Leave out the black wire. Insulate
and store the black wire properly.
Air supply port
The i4 Spot welder must be connected to a pneumatic air network.
(100 PSI to 130 PSI)
1. Connect the i4 to the air supply via the threaded input port at
the rear of the welder using a standard connector.
2. If not already set, adjust the air pressure setting on the welder front panel to
60 PSI (4-5 bar) (refer to section 4.5 “Setting the pneumatic air pressure”).
IMPORTANT! The air must be clean and free from oil and
moisture. Use a filter.
Figure 3.2
Page 9
All Info Copyright © Pro Spot International Inc.
3.5 Connection of pneumatic air supply
3.4.1 Electrical Plug / Extension cords
3.4 Connection of electrical supply
i4
ATTENTION! Toutes les connexions électriques doivent être
faites par un électricien qualifié . Risque de choc électrique.
IMPORTANT! L'air doit être propre sans huile et
humidité. Utilisez un filtre.
4 Operation
Before you begin welding, be sure to read and understand the following instruc-
tions.
The Pro Spot i4 is a state-of-the-art Inverter Resistance Spot Welder that was
designed for the collision repair industry. It duplicates the welding procedure used
by the car manufacturers. It is important to understand the design and function of
this welder before operating it.
ELECTRICITY ONLY: The i4 uses only electricity to create the welds unlike the
MIG welder which uses an arc from a feeding wire to build a weld nugget using
inert gas and the feeding wire material.
PRESSURE: The i4 has a built in air cylinder that compresses the Double-Sided
Gun’s welding tips together automatically when triggered. The compression is an
important part of a good resistance weld. The pressure is adjustable from the
Control Panel. The optimum welding pressure varies between 60-90 PSI (4-6.5
BAR). 90 PSI seems to be a common starting pressure. As a rule, increase pres-
sure with thicker metals but remember that too much pressure could decrease the
resistance of the metal between the electrodes, resulting in poor weld penetration.
CURRENT: Another important aspect of a weld is the current applied through the
work piece. A weld is created when a large current is transferred through the lay-
ers of sheet metal. The resistance in the metal causes the area to heat up and
fuse the sheets together in a nugget.
WELD PROGRAM: Maintaining the air pressure after the current shuts off makes
the weld cool down under pressure resulting in a harder, stronger weld. This fea-
ture is built in to the i4's weld control program and is engaged automatically dur-
ing a weld cycle.
TIME: The Timer controls the duration of the current applied during the weld
cycle. The ideal is to get a weld that uses higher current and shorter time to con-
trol heat buildup.
Page 10
All Info Copyright © Pro Spot International Inc.
4.1 Before you begin welding
4 Operation
i4

All Info Copyright © Pro Spot International Inc. 4 Operation
The welder is supplied with one of the following voltage and frequency combinations:
Input voltage: 3 phase
208-240V 50/60 Hz. OR
400-420-480V 50/60 Hz.
The actual voltage and frequency is stated on the rear panel name plate.
Open circuit output voltage 20v max. E.M.C. classification is C1SPR 11.
Welding amperage: 12500A max (3-phase)
Cable length: 8’ (2.5m) standard
Electrode Pressure: At 7 bars (90 PSI)-280 DaN (616 Lb)
At 9.5 bars (135 PSI)- 420 DaN (924 Lb)
Cooling system: Air (2 fans), Compressed air
(weld gun and weld cables)
Water Cooling
(inverter, transformer, welding gun)
Micro processor: i4 Upgradeable Software Platform
Shipping Weight (standard): 373lb (169kg)
Air Pressure Regulator
Display Screen
Power Switch
Input Voltage Phase Indicator LED
Lights should illuminate when
Power switch on front panel is "ON"
(2 lights for 1 phase or 3 lights for 3
phase)
Cable Holder Bracket Name Plate shows:
Input voltage,
Serial number, etc.
Cooling Fan
Air Input
Connect filtered air
100 PSI 7 BAR (min)
12
3Single-Sided ground cable
Two-Sided spot gun cable
Single-Sided Weld Gun cable
Two-Sided ground cable
WELD CABLES CONFIGURATION
4
The name plate is at the rear of the welder unit.
The required voltage is indicated on the label.
Welding output is rated at 15V.
Figure 4.1 i4-Front View
Figure 4.2 i4-Back View
Page 11
4.2.2 Getting familiar with your welder
4.2.1 Welder Overview & Technical Specifications
4.2 About your welder
Air Pressure Gauge
1
24
3
Two Sided Gun Holder
Single Sided Gun Holder
Tool Storage Tray
Cable Holder
i4
90021
All Info Copyright © Pro Spot International Inc. 4 Operation Page 12
4.2.5 Service Panel Window – Control System Status Lamps
i4
Location: Inside the i4 and PR-2000 tool & accessory tray (under the rubber mat).
Purpose: To quickly determine the status of many internal systems without opening the
welder. The welder needs to be powered up. Look down through the window. There
are several lights to watch for. The Voltage Indicator windows have three LED lights in
each window, while the IGBT and Bus Bar windows have only one light per window.
NOTE: D means diode while the number determines the device’s board location.
1) Buss High Voltage OK: LED1 & 2 indicate 300 volts DC present. Both stay ON (but
often only one of them is seen unless top cover is removed).
D06= present
D26= present.
2) IGBT Control System OK: LEDs 1, 2, 3, 4 indicate voltage present across each
IGBT gate. Each LED should stay ON. LED 5 (yellow) indicates 15VDC control voltage
and should stay ON. These diodes are on a separate, vertically-mounted mini-board.
D107 = present
D108 = present
D109 = present
D110 = present
D101= 15V present
3) AC Input - Voltage Drop Condition: LEDs 4, 5, 6 indicate a problem if any of them
comes ON during welding. They all come on briefly during startup then stay OFF.
D23= Primary voltage drop 10%,
D22= Primary voltage drop 15%
D21= Primary voltage drop 20%
4) DC Voltage Indicators, LED 1, 2, 3 indicate logic voltages generated and present.
They come ON during startup and stay ON.
D10= 15V present
D11= 18V present
D12 = 24V present
Service Panel Window –
Control System Status Lamps
Tool tray mat removal required to view Service Panel Window.

All Info Copyright © Pro Spot International Inc.
Figure 4.3 The i4 Control Panel
4 Operation
When two sided welding is selected, a spot gun graphic appears in the upper-left
corner of the display screen (fig. 4.4).
When single sided welding is selected, a single sided gun graphic appears in the
upper-left corner of the display screen (fig. 4.5).
Figure 4.4
Page 13
4.2.4 Indications on the Control Panel
4.2.3 i4 Control Panel
Figure 4.5
i4
Navigation
button Right
Navigation
button Left
Help / Instructions
button Left
Single Sided
button
Two Sided
spot gun button
Navigation button
Up
Navigation button
Down
Navigation button
Closed Circle
Navigation button
Open Circle
Display Screen
All Info Copyright © Pro Spot International Inc. 4 Operation Page 14
Gun.
Figure 4.5a
Figure 4.5b
4.3.1 Login Procedure
i4
After the welder has been turned on and when
the pre-weld screen has appeared, press the
“Start Welding” button (closed circle).
From this screen, enter the desired login. The i4
comes pre-programmed with the login user ID
0001, 0002, 0003, and 0004 available by default.
After the correct ID is entered, press DONE to
continue to the double-sided weld feature.
1. Toggle the circuit breaker on the front panel to “ON”. Three lights on the
front panel should illuminate indicating 3-phase installation, 2 lights for 1-
phase installation (fig. 4.5.1)
2. The display will go through the start-up procedure.
3. The i4 is now ready to use.
IMPORTANT! Make sure to read the instruction manual before operating
the welder. Only trained personnel should use this welder.
Figure 4.5.1
4.3 Turning on the welder
IMPORTANT! Assurez-vous de lire le Mode d’Emploi avant d'opérer
le soudeur. Seul le personnel qualifié devrait utiliser ce soudeur.

All Info Copyright © Pro Spot International Inc. 4 Operation
The i4 features 6 different strength weld power modes. It defaults to 0.7mm pro-
gram. To change weld program press “Next Program” (fig. 4.7).
The program box indicates the weld power (thickness).
For example, when welding two HSS Galv. metals that are 1.2mm thick, you
should use the 1.2mm program.
If more power is desired, press “Next Program” to reach the next level.
NOTE: The Factory Password (1234) must be entered in order to modify weld
programs. To enter the Factory Password press the Help button while booting at
the third screen to access the System Settings menu. The text located near the
Down Arrow button reads WELD SETTING CONTROL MODE: AUTO/MANUAL.
Auto is selected by default. Press the Down Arrow button to enter Manual mode.
In the PASSWORD REQUIRED pop up window enter 1234 using the arrow keys.
Exit by pressing the Open Circle button. The welder is in manual mode and weld
programs can now be modified.
The time and current automatically change with each respective weld power
mode.
Referring to fig. 4.8: The top value indicates the time duration that will be applied
during the weld and the bottom value indicates the weld power in weld amperage
that will be applied during the weld.
The i4 is a multi-functional resistance spot welder. It is equipped with a four weld
cable system for your convenience. Two of the weld cables are connected to the
Two-Sided Spot Gun and the other two are connected to the Single-Sided Weld
Gun.
To select a weld mode, press the respective mode button (fig. 4.6)
Once the welding mode is selected, a group of related weld programs become
available to the user (see section 4.8 “Setting the default weld programs”)
Figure 4.6
Pneumatic air is used for:
- forcing the spot gun to close and open.
- cooling the welding cables that are connected to the spot gun.
The air pressure is regulated with the air regulator, and the set pressure is indicat-
ed on the pressure gauge. Default pressure is 90 PSI.
Change the air pressure as follows:
1. Unlock the pressure regulator by pulling on the adjustor knob till it snaps into
the unlocked position.
2. Turn the pressure regulator knob clockwise to increase or counter-clockwise to
decrease the air pressure.
3. Lock the pressure regulator by returning the knob to the lock position.
Figure 4.7
Figure 4.8
Page 15
4.7 Setting the weld time and current
4.6 Setting/Changing the weld program
4.5 Setting the pneumatic air pressure
4.4 Choosing the weld mode
i4
4 Operation
4.8 Setting the default weld programs
There are 17 weld programs featured in the i4 Spot Welder. Ten of these pro-
grams are associated with the Single-Sided Gun and seven are associated with
the Two-Sided Spot Gun.
1234567
8910 11
1
2
3
4
5
6
7
8
9
10
11
HSS Steel / Galv. Steel Welding
Mild Steel Welding
Weld Bonding
Boron Steel Welding
Pulse Mode
OEM-Specific Programs
Custom Program
Single-Sided Spot Welding
Pro Pull Dent Removal
Note: Two-Sided welding mode and Program No. 1 are set by default
when the i4 is turned on.
Page 16
All Info Copyright © Pro Spot International Inc.
12 13 14 15 16 17
12
13
14
15
16
17
Two-Sided Programs
Single-Sided Programs
Figure 4.9
Dent Pulling
Contact Shrinking
Nut Welding
Bolt Welding
Stitch Welding
Carbon Rod Shrinking
Rivet Welding
Washer Welding
The welding programs are selected on the Control Panel. Select the welding pro-
gram by using the Left and Right navigaton buttons (fig. 4.9)
The selected program is indicated by a highlighted black box over the program
name (fig. 4.10).
In any welding mode there are 6 power level programs: 0.7mm - 2.5mm. To
switch between programs press the “Next Program” button (fig. 4.7).
Some programs require a double-weld in one cycle (fig. 4.11). Those welds auto-
matically deliver Weld 1, programmed delay, then Weld 2. This is a very sophisti-
cated weld feature for controlling exact temperature into the weld area and to pre-
heat it.
Figure 4.10
Figure 4.11
i4
Note: Mode recto- verso de soudage et le programme de soudage n °
1 sont définies par défaut lorsque le i4 est allumé.

5 Double-Sided Welding
The spot gun is used for the following weld programs:
•Two-Sided spot welding - HSS Galvanized steel, Mild steel, Weld Bonding,
Boron Steel, Pulse welding and OEM, Custom Modes
(see section 4.8 “Setting the default welding programs”)
Figure 5.1 PS-500 Spot Gun - Component Diagram
Page 17
All Info Copyright © Pro Spot International Inc.
F-44
Release Trigger Switch
F-44
Weld Trigger Switch
PS-103-CM
20mm Shank
PS-302
C-Arm
PS-025
Welding Cap
PS-1101-CM
60mm Shank PS-5203
Clamping Handle
Weld Shaft
Push this button to open electrodes wide. Push this button to close electrodes and weld.
5.1.2 Using the Double-Acting Gun
5.1.1 PS-500 Component Diagram
5.1 PS-500 Double-Acting Spot Gun
5 Double-Sided Welding
i4
5 Double-Sided Welding Page 18
All Info Copyright © Pro Spot International Inc.
Figure 5.2 i4 Extension Arms
Loosen the handle and pull off the C-arm... Now, insert the extension arm and tighten the handle.
The Pro Spot i4 comes with a variety of extension arms to accomodate any weld-
ing job situation.
Please refer to fig. 5.3 for details on what welding electrodes to use with each
extension arm.
NOTE: Extension arms marked “optional” are available from your local
distributor or online at www.prospot.com
5.2.1 Switching to extension arms
5.2 Extension Arms
i4
PS-52
Wheelhouse Arm
PS-307
(optional)
PS-308
(optional)
PS-305
508mm Extension Arm
PS-306
(optional)
PS-503-W
(optional)
PS-302 C-Arm PS-403 (optional)
C-X Adapter
REMARQUE: bras d'extension portant la mention «facultatif» sont
disponibles à partir de votre Distributeur régional ou en ligne à
www.prospot.com

All Info Copyright © Pro Spot International Inc. 5 Double-Sided Welding Page 19
5.2.2 Extension Arms and Welding Electrodes
Different extension arms require the use of different welding electrodes.
Use charts in fig. 5.3 and 5.4 to determine the correct combination of extension
arms and welding electrodes.
IMPORTANT! Using incorrect welding electrodes with extension arms
may result in weak welds and/or damage to your welder.
Figure 5.3 Extension arm - Welding electrode configuration chart
Figure 5.4 Welding electrode selection chart
NOTE: PS-025 Welding Caps can be purchased in packages of 15 from
your local distributor or online at www.prospot.com
A B C
PS-302 PS-1101-CM PS-103-CM
PS-52-5/8 PS-1101-CM PS-1133-5/8
PS-403 see Sec. 5.7.3 see Sec. 5.7.3
PS-305 PS-1101-CM PS-129-CM
PS-503-W PS-1101-CM PS-128-CM
A
B C
i4
IMPORTANT! En utilisant des électrodes de soudage inexactes au bras
d'extension peut donner des soudures faibles et / ou endommager votre
soudeur.
REMARQUE: PS-025 caps de soudure peuvent être achetés en paquets de 15
à partir de votre distributeur local ou en ligne à www.prospot.com
5 Double-Sided Welding
5.3 PS-500 Electrode Alignment
Page 20
All Info Copyright © Pro Spot International Inc.
IMPORTANT! Always maintain proper electrode alignment. Not doing
so may result in weak, substandard welds!
Figure 5.5 Electrode Alignment
Use the set screws (A, B, C) to align the electrodes. Ex: to move electrode down,
loosen screw (C) and tighten screws (A and B).
CORRECT WRONG
i4
IMPORTANT! Toujours maintenir l'alignement des électrodes appro-
priées. Ne pas le faire peut conduire aux soudures faibles de qualité
inférieure!

5 Double-Sided Welding Page 21
All Info Copyright © Pro Spot International Inc.
5.4 Removing Welding Electrodes
NOTE: An optional welding electrode cap removal tool is available,
which makes cap removal easy (fig. 5.6c). You can order the cap
removal tool from your local distributor or online at: www.prospot.com
The extension arm electrodes can be easily removed by lightly tapping them
with a pin and hammer as shown in fig. 5.6
Piston Electrode Extension Arm
Electrode
Pin
Welding Cap
Removing Extension Arm Electrode
Figure 5.6 Removing Welding Electrodes
Removing Piston Electrode
To remove the piston electrode:
1. Grip piston electrode with a set of pliers or vise-grips (fig.5.6a).
2. Rock the pliers back and forth to loosen the electrode from the holder.
3. Remove the electrode
Note: Vise-Grips shown in fig. 5.6a are specially designed to hold round
objects without damaging or scarring them. You can purchase a set from your
local distributor or online at: www.prospot.com
IMPORTANT! Do not attempt to remove the electrode by hitting it.
This could damage the electrode and the spot gun.
Removing Welding Caps
To remove a welding cap:
1. Hold piston electrode with a set of pliers or vise-grips.
2. Grip welding cap with another set of pliers or wedge side cutters between
cap and shank as shown in fig. 5.6b
3. Twist the two to loosen and remove the welding cap.
IMPORTANT! N'essayez pas de retirer l'électrode en la frappant.
Cela pourrait endommager l'électrode et le “pistolet”.
NOTE: Une option d’un outil pour enlever le bouchon est disponible,
Pour faciliter le retrait du bouchon (fig. 5.6c). Vous pouvez commander
cet outil de votre distributeur local ou en ligne à l'adresse: www.prospot.com
Figure 5.6a: Removing
Piston Electrode
Figure 5.6b: Removing
Welding Cap
Figure 5.6c: Optional Weld
Cap Removal Tool
i4
All Info Copyright © Pro Spot International Inc. 5 Double-Sided Welding Page 22
PS-52-5/8:
Wheel House Arm
PS-1101-CM:
60mm Electrode Shank
PS-1133-5/8:
Electrode
To maintain structurally-sound welds it is important to keep your welding
electrodes clear from build-up. It is also important to maintain a 6mm weld
nugget diameter. Clean electrodes with a file and periodically replace weld-
ing caps as explained in Section 5.4 “Removing Welding Electrodes”
WARNING! The electrodes may be hot. Use caution when handling
them.
5.6 Wheel House Arm
5.5 Welding Electrode Maintenance
The wheel house adapter allows access to hard to reach areas such as
the wheel house
i4
ATTENTION! Les électrodes peuvent être chauds. Soyez prudent
lors de leur manipulation.

All Info Copyright © Pro Spot International Inc. 5 Double-Sided Welding Page 23
C-TYPE GUN
The advantage of the C-Type Spot Gun is that when making vertical pinch
welds on quarter panels, rocker panels, door pillars, etc., the spot gun is
positioned perpendicular to the work area. Easy to reach! Easy to use!
X-TYPE GUN
The X-type design is used on certain applications where the C-type can’t reach.
90% of all welding needs can be done with the C-type but for some radiator sup-
port and truck bed pinch welds, the X-Adapter works better. This new invention
from Pro Spot makes it possible to weld where you never could before!
Loosen the handle and pull
out C-arm...
Insert the X-Adapter onto the
gun.Tighten handle (A).
Follow instructions in Sec. 5.4
to remove piston electrode
321
5.7.1 Attaching the X-Adapter
5.7 X-Adapter (optional)
A
Insert the Tapered Electrode (B)
into the Shaft (C). Apply air
(carefully) to put pressure on the
electrodes so that Tapered
Electrode seats firmly in the shaft
before tightening the Collar (D)
set screw.
4C
B
D
Tighten the Collar (D) set screw.
5
D
IMPORTANT! Do not tighten the Collar before the inserting Tapered
Electrode into the shaft. The collar is designed to prevent the Tapered
Electrode from falling out of the Shaft when the gun is fully opened.
IMPORTANT! Ne serrez pas le collier avant de glisser l’ Électrode
Rétreci dans le tube. Le collier est conçu pour empêcher l’ Électrode
Rétreci de tomber du tube quand le pistolet est complètement ouvert.
i4
5 Double-Sided Welding Page 24
All Info Copyright © Pro Spot International Inc.
Figure 5.7 90° Arm Set Figure 5.8 45° Arm Set
90° Electrode - Upper
(PS-411)
90°Electrode - Lower
(PS-412)
Pivot Axle
(PS-406)
Tapered
Electrode
(PS-405)
X Adapter
(PS-404) 45° Electrode - Upper
(PS-421)
45°Electrode - Lower
(PS-422)
PS-024
Welding Cap
5.7.3 X-Adapter Configurations
5.7 X-Adapter (optional) cont.
Collar
(PS-407)
Push the upper switch to open electrodes wide. Push the lower switch to close electrodes and weld.
5.7.2 Using the X-Adapter
i4

Figure 6.1b
Figure 6.1
i4
6 Single-Sided Welding
Single-Sided Welding
Carbon Rod Shrinking
Stitch Welding
Washer Welding
Nail Welding
Bolt and Nut Welding
Rivet Welding
Contact Shrinking
Spot Hammer Dent Pulling
Pro Pull Dent Removal
The Single-Sided Weld System allows the operator to carry out
welding tasks using a Single-Sided Weld Gun. The Single-Sided
weld procedure requires contact only from one side compared to
two sides in Two-Sided welding. A ground plate must be connect-
ed to the panel to be welded for it to work (fig. 6.1).
You can also use an optional magnetic ground plate to easily attach the ground
cable to the metal (fig. 6.1b).
NOTE: Make sure the ground plate is clamped firmly in place on the
inside of a clean metal surface as near as possible to the weld location.
Do not attach the ground to the metal you're about to weld on. When
performing other weld tasks such as dent pulling, etc., the ground
attachment location becomes less critical.
In the Single-Sided weld mode the following weld procedures are available for the
i4:
Page 25
All Info Copyright © Pro Spot International Inc.
Figure 6.2 Single-Sided applications
ground plate
6.1 Single-Sided Welding Overview
6 Single-Sided Welding
REMARQUE: Assurez-vous que la plaque de terre est serré solide-
ment en place à l'intérieur d'une surface métallique propre aussi près
que possible du lieu de soudure. Ne fixez pas le terre et le métal que
vous êtes sur le point de soudure . En accomplissant d'autres tâches
comme la soudure dent de traction, etc, le lieu de saisie devient
moins critique.
6 Single-Sided Welding Page 26
All Info Copyright © Pro Spot International Inc.
1. Make sure the welder is turned on. Push the Single-Sided weld mode button
(fig 6.3). Single Sided Weld Programs will display on the screen (fig. 6.5).
2. Use the navigation buttons, Left or Right to select desired weld program (refer
to section 4.8 “Setting the default weld program” or fig.4.9). The display screen
shows the currently selected program (fig. 6.4).
Figure 6.3: Selecting Single -Sided
weld mode
Figure 6.4 12345678910
1
2
3
4
5
6
7
8
9
10
Single-Sided spot welding
Pro Pull Dent Removal
Dent Pulling
Contact Shrinking
Nut Welding
Bolt Welding
Stitch Welding
Carbon Rod Shrinking
Rivet Welding
Washer Welding
Figure 6.5 i4 Single Sided Weld Programs
Single-Sided Programs
i4

6 Single-Sided Welding Page 27
All Info Copyright © Pro Spot International Inc.
Single-Sided spot welding is used where Two-Sided spot welding cannot be used.
Important: The Single-Sided spot welding is not permitted on supporting
frameworks of a vehicle. It is only permitted for cosmetic purposes.
1. Push the Single-Sided weld mode button (fig 6.3). Single Sided Weld Programs
will display on the screen (fig. 6.5). The i4 software defaults to Single Spot Weld
Mode (fig. 6.6).
2. Choose weld power level by pressing the “Next Program” button repeatedly.
(refer to section 4.6 "Setting the weld program").
3. Fit the Single-Sided Gun with Single-Sided electrode (fig.6.9).
4. Grind between the inner and the outer body sheets to remove paint, primer and
rust. This ensures good electrical contact when performing Single-Sided welding.
5. Ground the working area (refer to section 6.1 "Single-Sided Welding
Overview").
6. Apply about 33-44 lbs of pressure on the Single-Sided gun and push the trigger
to weld. Reposition and weld again.
Figure 6.6
Figure 6.9
Note: Make sure that Single-Sided electrode is clean. If it isn't, use a file
or tip dresser to clean it. If the weld cap shows considerable wear, it
should be replaced (refer to section 5.4 “Removing Welding Electrodes”)
Figure 6.10
Many of today's car bodies come with factory equipped threaded studs. After a
collision, the studs may be lost or do not accompany the replacement part. With
the i4, threaded studs can be welded-on in factory style. This type of stud is also
common throughout the car body for attachments of interior, tail lights, door mold-
ings, etc.
Studs are held in place during welding with magnetic adapter electrode.
1. Push the Single-Sided weld mode button (fig 6.3). Single Sided Weld Programs
will display on the screen (fig. 6.5). The i4 software defaults to Single Spot Weld
Mode (fig. 6.6).
2. Select Bolt Welding Program by pressing the Left or Right Navigatioin Buttons
(fig. 4.9). Make sure that Bolt Welding graphic appears on the screen (fig. 6.10)
3. Choose weld power level by pressing the “Next Program” button repeatedly.
(refer to section 4.6 "Setting the weld program").
4. Fit Single Sided gun with the magnetic stud adapter (fig. 6.12).
5. Insert stud into the adapter (fig. 6.12).
6. Prepare the surface area by removing paint and primer.
7. Ground the working area (refer to section 6.1 "Single-Sided Welding
Overview").
8. Position single sided gun over work area and push the trigger to weld.
9. Repeat as needed.
Figure 6.12
6.3 Bolt Welding
Tip: A threaded stud can also be used to fasten the ground clamp directly
to the panel, minimizing the area needed for grinding.
Astuce: Un goujon fileté peut également être utilisé pour fixer la pince
directement sur le panneau, ce qui réduit la surface nécessaire au broyage.
6.2 Single-Sided Spot Welding
i4
Important: Le soudage de Côté Unique par points n'est pas autorisée sur
les cadres de soutien d'un véhicule. Il est seulement permis à des fins
cosmétiques.
Remarque: Assurez-vous que l ‘électrode Côté Unique est propre. Si
ce n'est pas, utilisez une lime pour le nettoyer. Si le bouchon de
soudure est considerablement usé, il devrait être remplacé (voir la
section 5.4 "Enlèvement d’Electrodes de soudage»)
6 Single-Sided Welding Page 28
All Info Copyright © Pro Spot International Inc.
Figure 6.13
Weld-on nuts are common throughout the car body for attachments of interior, tail
lights, door moldings, etc. and are applied with ease using the i4.
Nuts are held in place during welding with a shrinking electrode.
1. Push the Single-Sided weld mode button (fig 6.3). Single Sided Weld Programs
will display on the screen (fig. 6.5). The i4 software defaults to Single Spot Weld
Mode (fig. 6.6).
2. Select Nut Welding Program by pressing the Left or Right Navigatioin Buttons
(fig. 4.9). Make sure that Nut Welding graphic appears on the screen (fig. 6.13)
3. Choose weld power level by pressing the “Next Program” button repeatedly.
(refer to section 4.6 "Setting the weld program").
4. Fit Single-Sided gun with the Shrink Electrode (fig. 6.15).
5. Prepare the surface area by removing paint and primer.
6. Ground the working area (refer to section 6.1 "Single-Sided Welding
Overview").
7. Press weld-on nut to the metal with Contact Shrinking electrode, apply some
pressure and push the trigger to weld.
8. Repeat as needed.
Figure 6.15
Tip: Different size nuts are available from your local Pro Spot distributor
or on the web at Pro Spot online store.
Figure 6.16
Spot hammer dent pulling is used to repair dents on a vehicle body. The spot
hammer welds directly onto the work area and pulls the dent.
1. Push the Single-Sided weld mode button (fig 6.3). Single Sided Weld Programs
will display on the screen (fig. 6.5). The i4 software defaults to Single Spot Weld
Mode (fig. 6.6).
2. Select Spot Hammer Program by pressing the Left or Right Navigatioin Buttons
(fig. 4.9). Make sure that Spot Hammer graphic appears on the screen (fig. 6.16)
3. Choose weld power level by pressing the “Next Program” button repeatedly.
(refer to section 4.6 "Setting the weld program").
4. Fit Single-Sided gun with the spot hammer (fig. 6.18).
5. Prepare the dent surface area by removing paint and primer.
6. Ground the working area (refer to section 6.1 "Single-Sided Welding
Overview").
7. Position the spot hammer tip at the bottom of the dent and push the
trigger to weld the electrode onto the metal.
8. Pull out a dent then release by twisting the hammer.
9. If needed, reposition, weld, and pull again.
When more pulling power is needed, simply increase the current.
Figure 6.18
Tip: The replaceable welding tip should last for over one thousand welds.
Contact your local distributor to order replacement tips, or order on the
web at Pro Spot online store.
Note: Check spot hammer tip periodically to make sure it is in good
working order. If the tip looks worn, replace it with a new one.
6.5 Dent Pulling with Spot Hammer
6.4 Nut Welding
i4
Astuce: noix de différentes tailles sont disponibles chez votre distribu-
teur local Spot Pro ou sur le web à la boutique Pro Spot en ligne.
Astuce: Le bout de soudage remplaçable devrait durer plus d'un millier
soudures. Contactez votre distributeur local pour commander pointes de
rechange, ou commandez sur la Web Pro Spot au magasin en ligne.
Note: Contrôlez le bout marteau périodiquement pour s'assurer qu'il est en
bon état de marche. Si le bout semble usé, le remplacer par un nouveau.

6 Single-Sided Welding Page 29
All Info Copyright © Pro Spot International Inc.
Figure 6.22
The slide hammer with hook (optional) can be used in conjunction with washers
to repair car body dents.
Washers are held in place during welding with magnetic adapter electrode.
1. Push the Single-Sided weld mode button (fig 6.3). Single Sided Weld Programs
will display on the screen (fig. 6.5). The i4 software defaults to Single Spot Weld
Mode (fig. 6.6).
2. Select Washer Welding Program by pressing the Left or Right Navigatioin
Buttons (fig. 4.9). Make sure that Washer Welding graphic appears on the screen
(fig. 6.22)
3. Choose weld power level by pressing the “Next Program” button repeatedly.
(refer to section 4.6 "Setting the weld program").
4. Fit Single-Sided gun with the magnetic washer adapter (fig. 6.24).
5. Insert washer into the adapter (fig. 6.24).
6. Prepare the dent surface area by removing paint and primer.
When welding on washers, you only need to clean the area where the washer
touches the metal since the grounding system is connected through a separate
cable.
7. Ground the working area (refer to section 6.1 "Single-Sided Welding
Overview").
8. Position the washer at the bottom of the dent and push the trigger to weld the
washer onto the metal.
9. Hook the washer with the slide hammer and pull out the dent.
10. Repeat as needed.
Figure 6.24
Tip: You can purchase a slide hammer with hook from your local Pro Spot
distributor or on the web at Pro Spot online store.
Figure 6.19
This function will weld on factory type clips for the window moulding. The clips
that hold the moulding do not, usually, come on the replacement parts.
Rivets are held in place during welding with magnetic adapter electrode.
1. Push the Single-Sided weld mode button (fig 6.3). Single Sided Weld Programs
will display on the screen (fig. 6.5). The i4 software defaults to Single Spot Weld
Mode (fig. 6.6).
2. Select Rivet Welding Program by pressing the Left or Right Navigatioin Buttons
(fig. 4.9). Make sure that Rivet Welding graphic appears on the screen (fig. 6.19)
3. Choose weld power level by pressing the “Next Program” button repeatedly.
(refer to section 4.6 "Setting the weld program").
3. Fit Single-Sided gun with the magnetic rivet adapter (fig. 6.21).
4. Insert rivet into the adapter (fig. 6.21).
5. Prepare the surface area by removing paint and primer.
6. Ground the working area (refer to section 6.1 "Single-Sided Welding
Overview").
7. Position Single-Sided gun over work area and push the trigger to weld.
8. Repeat as needed.
Figure 6.21
Tip: You can, also, pull multiple washers by welding on a row of washers
at the bottom of the dent, inserting a rod through the washers and pulling
the rod with the slide hammer with hook.
Astuce: Vous pouvez, également, tirer plusieurs rondelles par soudage sur
une rangée de rondelles au bas de la Dent, insertant une baguette par les
rondelles et en tirant la tige avec le marteau glissqnt avec crochet.
6.7 Dent Pulling with Washers and Slide Hammer with Hook
6.6 Moulding Clip Rivet Welding
i4
Astuce: Vous pouvez acheter un marteau glissant avec crochet de votre
distributeur locale Pro Spot ou sur le web à la boutique Pro Spot en ligne.
6 Single-Sided Welding Page 30
All Info Copyright © Pro Spot International Inc.
Figure 6.25
Dent pulling with washers creates high spots in the metal. Until now, the common
practice would have been to grind the surface, resulting in a loss of sheet metal
thickness. With the i4, use the shrinking tip instead of a grinder to remove the
high spots, leaving a smooth and clean surface that's every bit as thick and
strong as before. Shrinking electrode also acts as a nut adapter (refer to section
6.4 "Nut Welding"). With this electrode you get two convenient tools in one.
1. Push the Single-Sided weld mode button (fig 6.3). Single Sided Weld Programs
will display on the screen (fig. 6.5). The i4 software defaults to Single Spot Weld
Mode (fig. 6.6).
2. Select Contact Shrinking Program by pressing the Left or Right Navigatioin
Buttons (fig. 4.9). Make sure that Contact Shrinking graphic appears on the
screen (fig. 6.25)
3. Choose weld power level by pressing the “Next Program” button repeatedly.
(refer to section 4.6 "Setting the weld program").
4. Fit Single-Sided gun with the contact shrinking electrode (fig. 6.27).
5. Prepare the surface area by removing paint and primer.
6. Ground the working area (refer to section 6.1 "Single-Sided Welding
Overview").
7. Position the contact shrinking electrode over the high spot, apply some pres-
sure and push the trigger to weld.
8. Repeat as needed.
Figure 6.27
Figure 6.28
Carbon Rod is used to shrink or stretch metal on a vehicle. The carbon rod can
also be used on sharp dents caused by such things as hail.
1. Push the Single-Sided weld mode button (fig 6.3). Single Sided Weld Programs
will display on the screen (fig. 6.5). The i4 software defaults to Single Spot Weld
Mode (fig. 6.6).
2. Select Carbon Shrink Program by pressing the Left or Right Navigatioin
Buttons (fig. 4.9). Make sure that Carbon Shrink graphic appears on the screen
(fig. 6.28)
3. Choose weld power level by pressing the “Next Program” button repeatedly.
(refer to section 4.6 "Setting the weld program").
4. Fit the Single-Sided Gun with Carbon Electrode (fig. 6.30).
5. Clean the metal surface area.
6. Ground the working area (refer to section 6.1 "Single-Sided Welding
Overview").
7. Position carbon rod over the work area and push the trigger to start welding.
Keep trigger depressed to continue welding. Move the carbon rod in such a way
as to heat up the entire working area to the appropriate temperature. Release the
trigger to stop welding.
8. Cool the surface with a wet rag or compressed air.
Figure 6.30
6.9 Carbon Rod Shrinking / Stretching
6.8 Contact Shrinking
i4

6 Single-Sided Welding Page 31
All Info Copyright © Pro Spot International Inc.
Figure 6.31
The i4 can also be fitted with a stitch weld adapter enabling the operator to lay
staggered bead type welds. While rolling the tip on the sheet metal edge, the
welder will automatically deliver an intermittent or pulsating current.
1. Push the Single-Sided weld mode button (fig 6.3). Single Sided Weld Programs
will display on the screen (fig. 6.5). The i4 software defaults to Single Spot Weld
Mode (fig. 6.6).
2. Select Stitch Welding Program by pressing the Left or Right Navigatioin
Buttons (fig. 4.9). Make sure that Stitch Welding graphic appears on the screen
(fig. 6.31)
3. Choose weld power level by pressing the “Next Program” button repeatedly.
(refer to section 4.6 "Setting the weld program").
4. Fit Single-Sided gun with the stitch electrode (fig. 6.33).
5. Prepare the surface area by removing paint and primer.
6. Ground the working area (refer to section 6.1 "Single-Sided Welding
Overview").
7. Roll the tip on the sheet metal edge while keeping the trigger depressed. The
welder will automatically deliver an intermittent or pulsating current.
8. Repeat as needed.
This procedure works well on stainless steel, and therefore lends itself well to rust
repair and patching. It's easy to use and can be manipulated to fit any shape or
form you require.
Figure 6.33
Tip: You can use stitch electrode to weld pulling tabs onto areas that
need to be pulled.
6.10 Stitch Welding
i4
Astuce: vous pouvez utiliser l'électrode de point à souder tirant
des onglets sur des endroits qui ont
besoin d'être tirés.
6 Single-Sided Welding Page 32
All Info Copyright © Pro Spot International Inc.
Pro Pull comes with three different
Blocking Plates with Quick-Connect design.
Block window size:
2.5"(63mm) x 1.5"(38mm)
Block window size:
1.75"(44mm) x 1"(25mm)
Block window size:
0.75" (19mm) dia.
PP-10-04
PP-10-03
PP-10-01
Large openings for
great visual control
of the pulling area.
Retrofit point for different end adapters.
Available for most weld guns.
(not included) See prospot.com for more
information.
Removable weld shaft.
The weld current is
transferred through the shaft
and NO CABLE is required
to transfer the current
CLT-55
Electrode
N-38
Nut CLP-75
1. Push the Single-Sided weld mode button (fig 6.3). Single Sided Weld Programs
will display on the screen (fig. 6.5). The i4 software defaults to Single Spot Weld
Mode (fig. 6.6).
2. Select Pro Pull Welding Program by pressing the Left or Right Navigation
Buttons (fig. 4.9). Make sure that Pro Pull Welding graphic appears on the screen
(fig. 6.6).
Figure 6.6 Selecting Pro Pull
weld mode Make sure the ground plate is clamped firmly in place on the inside of a
clean metal surface as near as possible to the weld location.
NOTE: Do not attach the ground to the metal you're about to weld on.
When performing other weld tasks such as dent pulling, etc., the ground
attachment location becomes less critical.
Pro Pull can be
fitted to most
resistance spot welders
or dent pullers.
Welder & Adapters
not included.
Pro Pull is a patented, innovative tool for fast and accurate dent pulling. It
features paintless dent removal functionality (see sec. 6.3.5 “Paintless Dent
Pulling With Pro Pull”).
6.11.2 Pro Pull Component Diagram
6.11.1 Selecting Pro Pull Weld Mode
6.11 Pro Pull Dent Pulling (optional)
i4
Assurez-vous que la plaque de terre est serré fermement en place à
l'intérieur d'une surface propre de métal le plus près que possible au lieu
de soudure.
NOTE: Ne fixez pas le terre et le métal que vous êtes sur le point de
soudre. Lors de l'exécution d'autres tâches comme la soudure dent de
traction, etc, le terre du lieu de saisie devient moins critique.

6.11.5 Paintless Dent Pulling With Pro Pull
6 Single-Sided Welding Page 33
All Info Copyright © Pro Spot International Inc.
A
F
C
E
1. Attach the Weld Gun (D) to Weld Shaft (C). Secure Lock Bolt (G).
2. Slide weld shaft and gun to standard distance (E).
3. Attach desired block plate (A)
4. Position the weld tip in the “bottom” of the dent, weld, then pull the handle (F)
to initiate the pulling action. Use the shortest weld TIME possible to prevent
extensive weld marks.
D
approx.
0.7”(17mm)
Aim, position & fire! Pull dent with Auto
Blocking.
Twist gun to release tip.
6.11.4 Dent Pulling with Pro Pull
6.11.3 Pro Pull Assembly
1 2 3
i4
Glue Adapter for Paintless
Dent Removal
7i4 Login Feature Page 34
All Info Copyright © Pro Spot International Inc.
7.1 Overview
7.2 Turning the Login Function Off
7.3 Turning the Login Function On
7 i4 Login Feature
6. When we turn the i4 on it will not prompt for any User password if the Login function is turned off.
7. To turn the Login function on, we have to enter the Factory Password (1234) while booting.
8. Push the Help button while booting at the third screen to access the System Settings menu. The text located
near the Down Arrow button reads WELD SETTING CONTROL MODE: AUTO/MANUAL. Auto is selected by
default. Press the Down Arrow button to enter the Manual mode. In the PASSWORD REQUIRED pop up
window enter 1234 using the arrow keys. Exit by pressing the Open Circle button.
9. In the System Settings menu press Exit (open circle button). The software will reboot and arrive at the first
Status screen. Press the Start Welding button (closed circle) and you will access the weld menu without
being prompted for a User password (Login function is still off).
10. Scroll to Custom B in the Double Sided weld menu. Press System Settings (closed circle button) and you
will arrive in the Login menu. From here we can turn the Login on by pressing LOGIN ON/OFF
(closed circle button). The software will reboot with the preferences stored.
1. The i4 software (versions 1.3.03 and up) utilizes three levels of access: a Factory Password, Login Master
Password, and Login User Passwords.
Login Master Password: 2625
Login User Password: Selectable between 0001-9999
2. Only the Login Master Account has access to the Technician password configuration menu. There are 20
passwords arranged in a 5x4 matrix with initial values of 0001. The displayed 0001 represents an active
password. Selecting any other number (0001 – 9999) will activate it. The Login Master Password can
activate up to 20 Login User Passwords.
3. After startup, press ‘Start Welding’ at the first Status screen (closed circle button).
4. Login with the Manager Account when prompted (2625).
5. Scroll to Custom B in the Double Sided weld menu. Press System Settings (closed circle button) and you
will arrive in the Login menu. From here we can turn the Login off by pressing LOGIN ON/OFF
(closed circle button). The software will reboot with the preferences stored.
i4
After the welder has been turned on and when
the pre-weld screen has appeared, press the
“Start Welding” button (closed circle).
From this screen, enter the desired login. The i4
comes pre-programmed with the login user ID 0001,
0002, 0003, and 0004 available by default. After the
correct ID is entered, press DONE to continue to the
double-sided weld feature.

16. Only the Login Master Password (2625) can set up Login User Passwords from the Login menu.
17. While the i4 is running, with the Login function on, the Factory Password (1234) entered, and the Login Master
Password (2625) as the present login ID, Scroll to Custom B in the Double Sided weld menu. Press System
Settings (closed circle button) and you will arrive in the Login menu.
18. Press Login ID Settings (down arrow).
19. Navigate with the Left and Right Arrow and Open Circle buttons. Set desired values (ex: 0003) with the Up and
Down Arrow buttons. Once done press the Closed Circle button.
20. Passwords can now be added/changed. There is a maximum of 20 possible Login User Passwords available
to be active.
11. Here we will explain how to switch to another Login User Password without powering the i4 down (on the fly).
12. While the i4 is running, make sure the Login function is on, and the Login User password is set to 0001.
13. Scroll to Custom B in the Double Sided weld menu. Press System Settings (closed circle button) and you
will arrive in the Login menu. Press “Change” (up arrow button) to enter a new password.
14. Enter the desired existing Login Password (ex: 0002).
15. If we enter a wrong number and press Done, a “WARNING! Invalid login ID Try Again” error message window
will appear.
NOTE: It is important that a valid password is entered or the machine will have to be rebooted.
7i4 Login Feature Page 35
All Info Copyright © Pro Spot International Inc.
7.4 Switching Passwords
7.5 Setting Up Technician User Passwords
7 i4 Login Feature
i4
8i4 Log Feature Page 36
All Info Copyright © Pro Spot International Inc.
8.1 i4 Log Instructions
8 i4 Log Feature
i4
To Clear Log:
To access the LOG menu screen on the welder:
1. In the Welding screens: navigate with side arrow to CUSTOM B
2. Click SYSTEM SETTINGS
3. Move cursor with side arrow to LOG
4. Click LOG MENU The following options are available: SEND LOG TO USB, HEADER, CLEAR LOG, EXIT.
5. Click HEADER to: edit Information that will appear on top of the weld data report
6. Click INCREASE to select a character from A - 0
7. Click DECREASE to select a character from A - 0, click Right side arrow to accept
character and move right. Click Left Arrow to go back. Click NEXT VALUE to move to the next
subject (Vehicle Number) etc. click DONE to proceed. The entered information is now placed in
8. Click EXIT twice go back to the Weld Screens.
9. Click CLEAR LOG from the LOG MENU to: erase previous weld data in the log
and to start a new header with no weld data in the log. Fill out the log (see above) click
DONE to proceed. click EXIT twice go back to the Weld Screens
the LOG as a new heading. The previous logs with previous headings will remain in the log without
being erased. Header info can be edited in MS Excel.

8i4 Log Feature Page 37
All Info Copyright © Pro Spot International Inc.
8.2 Download the Log file for print
8 i4 Log Feature
i4
1. Take flash card out of the i4 and insert in a PC flash card reader.
2. Open the ADVANCED directory.
3. Open ad_log directory.
4. Find PROSPOT.LOG file and copy it to your hard drive.
5. Open Weld_Log directory, locate “Weld Log v1.2.xlt” template.
6. Open the template, click blue box "Process Log File"
select the PRO SPOT.LOG file that you just copied to your hard drive.
7. The data should fill in respective rows and columns.
NOTE: i4 Data Log will not process if header information has not been properly entered, for reference please
see the previous page of this document. Also, make sure that atleast one weld has been made on the machine
before processing Data Log.
IMPORTANT: Do not save over Weld Log template file - Use the “Save As” function to save a copy.
Sample of Pro Spot Weld Log template
Weld Log Header
Weld Data Information
Legend
Process Log File Button
2442 6870 6801 2GV 1 1OK 027C 1999 1000 2501 8 8 230 231 2328/20/2008 12:29:20 0.17
2441 6870 6801 2GV 1 1OK 027C 1999 1000 2501 8 8 230 231 2328/20/2008 12:25:10 0.17
2443 6870 6801 2GV 1 1OK 027C 1999 1000 2501 8 8 230 231 2328/20/2008 12:39:10 0.16
2444 6870 6801 2GV 1 1OK 027C 1999 1000 2501 8 8 230 231 2328/20/2008 13:29:00 0.17
2445 6870 6801 2GV 1 1OK 027C 1999 1000 2501 8 8 230 231 2328/21/2008 06:12:20 0.15
2446 6870 6801 2GV 1 1OK 027C 1999 1000 2501 8 8 230 231 2328/21/2008 06:12:30 0.17
2447 6870 6801 2GV 1 1OK 027C 1999 1000 2501 8 8 230 231 2328/21/2008 06:13:20 0.16
2448 6870 6801 2GV 1 1OK 028C 1999 1000 2501 8 8 230 231 2328/21/2008 06:17:09 0.13
2449 6870 6801 2GV 1 1FAIL 028C 1999 1000 2501 8 8 000 000 0008/22/2008 12:29:20 0.17
2450 6870 6801 2GV 1 1OK 028C 1999 1000 2501 8 8 230 231 2328/22/2008 12:31:20 0.13
2451 6870 6801 2GV 1 1OK 028C 1999 1000 2501 8 8 230 231 2328/22/2008 12:33:10 0.15
2452 6870 6801 2GV 1 1OK 028C 1999 1000 2501 8 8 230 231 2328/22/2008 12:34:20 0.17
2453 6870 6801 2GV 1 1OK 028C 1999 1000 2501 8 8 230 231 2328/22/2008 12:35:25 0.14
2454 6870 6801 2GV 1 1OK 028C 1999 1000 2501 8 8 230 231 2328/22/2008 12:36:08 0.17
2455 6870 6801 2GV 1 1OK 028C 1999 1000 2501 8 8 230 231 2328/23/2008 12:29:21 0.17
2456 6870 6801 2GV 1 1OK 028C 1999 1000 2501 8 8 230 231 2328/23/2008 12:30:20 0.17 Copyright © Pro Spot International, Inc. 2005-2009
Pro Spot international, Inc.
2625 Temple Heights Dr Ste. A
Oceanside, CA 92056
Toll Free: (877) PRO SPOT
Fax: [phone]
E-mail: [email protected]
Web: www.prospot.com