ESAB TIG 401iW User manual

TIG 401iW
INVERTER TIG
Welding Power Source
Instruction manual

1
TIG 401iW
INVERTER TIG WELDING POWER SOURCE
Instruction manual
For
Installation, Operation & General Maintenance

2
CONTENTS
Item
Page No.
SAFETY
3-4
RATING AND INSTALLATION
5-6
CAUTIONS FOR INSTALLATION
6
WELDING OPERATIONS
7-8
WIRING DIAGRAM
9
TROUBLESHOOTING
10
PARTS LIST AND EXPLODED VIEW
11-15

3
SAFETY
Users of ESAB welding equipment have the ultimate responsibility for ensuring that
anyone who works on or near the equipment observes all the relevant safety
precautions. Safety precautions must meet the requirements that apply to this type of
welding equipment. The following recommendations should be observed in addition to
the standard regulations that apply to the workplace.
Trained personnel well acquainted with the operation of the welding equipment must
carry out all the work. Incorrect operation of the equipment may lead to hazardous
situations, which can result in injury to the operator and damage to the equipment.
1. Anyone who uses the welding equipment must be familiar with:
• its operation
• location of emergency stops
• its function
• relevant safety precautions
• welding
2. The operator must ensure that:
• no unauthorized person is stationed within the working area of the equipment
when it is started up.
• no one is unprotected when the arc is struck
3. The workplace must:
• be suitable for the purpose
• be free from drafts
4. Personal safety equipment
• Always wear recommended personal safety equipment, such as safety glasses,
flameproof clothing, and safety gloves.
• Do not wear loose—fitting items, such as scarves, bracelets, rings, etc., which
could become trapped or cause burns.
5. General precautions
• Make sure the return cable is connected securely.
• Only a qualified electrician may carry out work on high voltage equipment.
• Appropriate fire extinguishing equipment must be clearly marked and close at
hand.
• Lubrication and maintenance must not be carried out on the equipment during
operation.
Read and understand the instruction manual before installing or operating.
ESAB can provide you with all necessary welding protection and accessories.

4
WARNING
Arc welding and cutting can be injurious to yourself and others. Take
precautions when welding.
Ask for your employer’s safety practices which should be based on manufacturers’
hazard data.
ELECTRIC SHOCK –Can kill
• Install and earth the welding unit in accordance with applicable
standards.
• Do not touch live electrical parts or electrodes with bare skin, wet
gloves or wet clothing.
• Insulate yourself from earth and the workpiece.
• Ensure your working stance is safe.
FUMES AND GASES –Can be dangerous to health
• Keep your head out of the fumes.
• Use ventilation, extraction at the arc, or both, to take fumes and gases
away from your breathing zone and the general area.
ARC RAYS –Can injure eyes and burn skin.
• Protect your eyes and body. Use the correct welding screen and filter
lens and wear protective clothing.
• Protect bystanders with suitable screens or curtains.
FIRE HAZARD
• Sparks (spatter) can cause fire. Make sure therefore that there are no
inflammable materials nearby.
NOISE –Excessive noise can damage hearing
• Protect your ears. Use earmuffs or other hearing protection.
• Warn bystanders of the risk.
MALFUNCTION –Call for expert assistance in the event of malfunction.
PROTECT YOURSELF AND OTHERS!
CAUTION!
This product is solely intended for arc welding
Do not dispose of electrical equipment together with normal waste!
In accordance with national law, electrical equipment that has
reached the end of its life must be collected separately and returned
to an environmentally compatible recycling facility. As the owner of
the equipment, you should get information on approved collection
systems from the local representative. By applying this Directive you
will improve the environment and human health

5
RATING
TIG 401i W INVERTER WELDING POWER SOURCE
Item
Unit
TIG 401iW
Input power
V
3～415
Frequency
Hz
50/60
Rated input capacity
KVA
18.7
Rated input current
A
26
OCV
V
65
Rated welding voltage
V
26
Welding current
A
20～400
Base current
A
20～400
Tig welding current
A
20～400
MMA welding current
A
25～350
Current up, down time
S
0～10
Pulse frequency
Hz
0.5～250
Duty ratio
%
0～100
Gas pre-flow
S
0.3～10
Gas post-flow
S
0.5～25
Rated output
%
60
TIG arc
HF
Efficiency
η
≥ 85%
Power factor
Cosφ
0.93
Insulation grade
Level
H
IP
IP
IP21S
Dimension L×W×H
mm
670*307*610
Weight
kg
38

6
INSTALLATION
The complete installation for TIG application should consist the following items:
Description
Type
Quantity
1.
Welding Power Source
TIG 401i w
1
2.
TIG Torch for TIG Welding
1
3.
Earth cable with Clamp
1
4.
GAS connection with regulator
1
The complete installation for MMA application should consist the following items:
Description
Type
Quantity
1.
Welding Power Source
TIG 401i w
1
2.
Welding Cable with
Electrode Holder.
1
3.
Earth cable with Clamp
1
CAUTIONS FOR INSTALLATION
Provide a Switch Box for every Welding Power Source, and use designated
fuse
Tolerance of Power Voltage Variation is 10% of rated input voltage.
a) Installation place
Install in the place where less moisture and dust exist. Avoid direct sunlight and
rain, and maintain ambient temperature within –10o to +45o C as much as
possible.
Keep the welding power source at least 20 cm. away from the wall (if any).
In case of installation of more two units side by side, a distance of more than 20
cm is recommended between the two power sources.
Use a shield to protect the welding arc in case of excessive air draft.
b) Ventilation
Adequate ventilation is recommended at the place of installation. For
example the following guideline should be followed:
a) In case of the area being more than 300 square meters (per unit), no
ventilation is required, provided the room is not completely airtight.
b) In case of the area being less than 300 square meters and the welding
is continuously performed, adequate ventilation is recommended with
the help of vent fan or exhaust duct.
c) While performing the grounding work, it is recommended that a skilled
electrician does the work.

7
WELDING OPERATIONS
FRONT PANEL
FRONT PANEL
1. Power Indicator.
2. Protection
Indicator.
3. Working
Indicator.
4. Voltage Display.
5. Welding Data Display.
6. TIG Welding
Trigger Mode
Selection.
7. Remote
Control Indicator.
8. Down Slope / Idle
Time adjusting knob.
9. Post Gas Flow
adjusting Knob.
10. Arc Force / Base
Current adjusting
Knob.
11. Crater
Current Adjusting
Knob.
12. Pulse Frequency
adjusting Knob.
13. Pulse Ratio
adjustment Knob.
14. Ignition Current
Adjustment Knob.
15. Pre Gas flow
adjusting Knob.
16. MMA Current /
Peak Current
adjusting Knob.
17. Hot Start / UP
Slope/Spot Time
adjusting knob.
18. Remote Control
Socket.
19. Pulse ON /
OFF Selection.

8
FRONT PANEL LOWER
1. “+” output power
Socket.
2. Remote Socket.
3.Torch Switch
Control Socket.
4. “-”Output
Power Socket
(TIG Torch).
5. TorchGAS connection.
6. Water connection
for TIG Torch.
7. Water connection
for TIG Torch.
REAR PANEL
1. Power ON/ OFF
Switch.
2. Air / Water Torch
Selection.
3.FlowSensor
connection.
4. InputPowerConnection.
5. InputGasconnection.
6. Power Output
to cooling unit.

9
WIRING DIAGRAM