HBS A 12 User manual

©HBS Bolzenschweiss-Systeme GmbH & Co. KG
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Operating Manual
A 12
Stud Welding Gun
93-20-270
2021

2
After-sales service for Germany:
HBS Bolzenschweiss-Systeme GmbH & Co. KG
Felix-Wankel-Strasse 18
85221 DACHAU
GERMANY
Phone [phone]
Fax [phone]
E-mail [email protected]
Web www.hbs-info.com
A 12 Operating Manual Issue 2021-01 Order No. E-BA 93-20-270
Translation of the Original Operating Manual
Please keep the manual in a safe place for future reference.
Transmission and duplication of this document, dissemination and notication
of the contents are not permitted unless expressly approved.
All rights, errors and technical amendments reserved.
© HBS Bolzenschweiss-Systeme GmbH & Co. KG

3©HBS Bolzenschweiss-Systeme GmbH & Co. KG
All rights reserved – Reprinting, in whole or in part, only with the approval of the manufacturer
Dear Customer,
Many thanks for buying a stud welding machine from HBS Bolzenschweiss-Syste-
me.
We at HBS wish you success at all times when working with this stud welding ma-
chine.
The high level of quality of our products is guaranteed by ongoing further deve-
lopment in the design, equipment and accessories. This may result in differences
between the present operating manual and your product. No claims can therefore be
derived from the data, illustrations and descriptions.
We have compiled the data and information in this reference work with the greatest
care, and have made every effort to ensure that the information contained in this
manual was correct and up-to-date at the time of delivery. We can nevertheless give
no guarantee for an absolutely error-free document.
Should you discover any errors or unclear points when reading this operating manu-
al, please do not hesitate to contact us.
We would also be grateful for any feedback should you have any suggestions or
complaints to make about our product.
HBS Bolzenschweiss-Systeme GmbH & Co. KG
Felix-Wankel-Strasse 18
85221 Dachau
GERMANY

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4
Table of Contents
Table of Contents
1 Important Safety Precautions ................................................................... 6
2 Symbols and Terms Used ....................................................................... 10
3 Scope of Supply ....................................................................................... 13
4 Accessories .............................................................................................. 13
5 Technical Data .......................................................................................... 14
6 Intended Use ............................................................................................ 15
7 Warranty ................................................................................................... 16
8 Design and Function ............................................................................... 17
9 Welding Process ...................................................................................... 18
10 Preparing the Stud Welding Gun ........................................................... 19
10.1 Mounting the Chuck .............................................................................................. 20
10.2 Mounting the Leg Assembly ................................................................................. 21
10.3 Setting the Welding Parameters ........................................................................... 22
Adjusting Lift ....................................................................................................................... 24
Adjusting Spring Force ....................................................................................................... 25
Setting the Insertion Depth (Protrusion) ............................................................................. 26
11 Welding ..................................................................................................... 28
12 Troubleshooting ....................................................................................... 29
13 Maintenance and Care ............................................................................. 31
13.1 Cleaning ............................................................................................................... 31
13.2 Inspection and Tests ............................................................................................. 32

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Table of Contents
14 Storage ..................................................................................................... 33
15 Disposal .................................................................................................... 33
Declaration of Incorporation of partly completed Machinery .......................... 34
Service & Support ................................................................................................ 35
Index ...................................................................................................................... 36

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6
1 Important Safety Precautions
1 Important Safety Precautions
The target group for this manual are qualied personnel who in view of their techni-
cal training, know-how and experience and knowledge of applicable regulations are
able to assess the work assigned to them and recognise potential hazards.
Danger from incorrect use
Use the stud welding machine only for the purpose described in this ma-
nual.
Otherwise you may endanger yourself or damage the stud welding machine.
You endanger yourself and others if you operate the stud welding machine
incorrectly or fail to observe the safety precautions and warnings. This can
lead to serious injury or extensive material damage.
Danger for unauthorised operating personnel
Work with the stud welding machine only when
– You are appropriately trained, instructed and authorised to do so, and
– You have read and completely understood this operating manual.
Never work with the stud welding machine when you are under the inu-
ence of
– Alcohol,
– Drugs or
– Medication.
Danger from unauthorised modications
Never modify the stud welding machine or parts thereof without obtaining
a clearance certicate from the manufacturer.
You will otherwise endanger yourself. This can lead to serious injury or ex-
tensive material damage.

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1 Important Safety Precautions
Life-threatening danger for wearers of active implanted cardiac
devices
Danger for workers at particular risk within the meaning of the
EMF directive
Persons at particular risk within the meaning of the EMF directive are:
– Workers with active implanted medical devices
– Workers with passive implanted medical devices that contain metal
– Workers with medical devices worn on the body
– Pregnant workers.
Never operate the stud welding machine if you are among the group
of workers at particular risk within the meaning of the EMF directive.
In this case, never remain in the vicinity of the stud welding machine
during welding.
Never operate the stud welding machine if persons are located
nearby who are among the group of workers at particular risk within
the meaning of the EMF directive.
Strong electromagnetic elds are produced in the vicinity of the stud
welding machine during welding. These elds can adversely affect the
function of medical devices as well as the course of a pregnancy.
Danger from fumes and airborne particulates
Switch on the welding fume extractor at the place of work.
Ensure that the room is well ventilated.
Never weld in rooms with a ceiling height of less than 3 m.
Observe furthermore your working instructions and the accident
prevention regulations.
This will help to avoid health damage due to fumes and airborne parti-
culates.

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1 Important Safety Precautions
Danger from glowing metal spatter (re hazard)
Glowing hot weld spatter and liquid splashes, ashes of light and a
loud bang > 90 dB (A) must be anticipated during stud welding.
Inform colleagues working in the immediate vicinity accordingly
before starting work.
Ensure that an approved re extinguisher is available at the work-
place.
Do not weld when wearing working clothes soiled with ammable
substances such as oil, grease, petroleum, etc.
Wear your proper protective clothing, such as:
– Protective gloves in accordance with the relevant standard,
– Non-ammable clothing,
– A protective apron over your clothing,
– Full-ear hearing protection in accordance with the relevant stan-
dard,
– A safety helmet when welding above your head,
– Safety shoes,
– Safety goggles with sight glass of protection level 2 in compli-
ance with the applicable standards and do not look directly into
the electric arc.
Remove all ammable materials and liquids from the vicinity of the
work area before starting welding.
Weld at a safe distance from ammable materials or liquids.
Select a safety distance large enough to ensure that no danger can
arise from weld spatter.
Protection of the stud welding unit
Protect the stud welding machine against the ingress of foreign
matter and liquids caused by cutting or grinding work in the vicinity
of your work area.
This will help to prolong the service life of your stud welding machine.

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1 Important Safety Precautions
Safety notices in accordance with EMF directive 2013/35/EU
Currents owing through electrical conductors during stud welding cause electric
and magnetic elds that can occur, in particular, near the hand-held welding guns,
the welding arrangement (e.g., welding cables) and the welding power sources.
Due to the high currents, high EMF exposures may occur.
Danger for workers at particular risk within the meaning of the
EMF directive
Persons at particular risk within the meaning of the EMF directive are:
– Workers with active implanted medical devices
– Workers with passive implanted medical devices that contain metal
– Workers with medical devices worn on the body
– Pregnant workers.
Strong electromagnetic elds are produced in the vicinity of the stud
welding machine during welding.
To reduce the danger posed by electromagnetic elds, we recommend, among other
things, the following rules of conduct:
Lay all cables as close together as possible.
For proper bundling and safeguarding of the cables, HBS offers protective tubes in
various sizes.
Do not position yourself between the welding cables.
Only lay the cables to one side and position them as far as possible from the
operating personnel.
Do not loop the cables over your body, especially not at head level.
Completely unwind the welding cables.
Use the shortest possible welding cables.
Place portable welding power sources as far away as possible while welding.
If possible, do not operate welding power sources in the immediate vicinity of
other persons, do not sit directly next to the welding power source while working
and do not lean against it.
In addition to these safety notices, also observe your work instructions and acci-
dent prevention regulations.

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2 Symbols and Terms Used
2 Symbols and Terms Used
The symbols used in this operating manual have the following meanings:
Danger
Warns you of hazards that can lead to injury of persons or to
considerable material damage.
Caution
Problems in operating may occur if this information is not observed.
No access for people with active implanted cardiac devices
No access for persons with implants made of metal
No access for pregnant women
Danger
Warns you of electrical hazards
Danger
Warns you of electromagnetic elds that can be generated during welding
These symbols prompt you to wear personal protective clothing when
working with the stud welding unit.
This symbol prompts you to wear ear protection. A loud bang > 90 dB (A)
can occur during the welding process.

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2 Symbols and Terms Used
Tip
Cross-reference to useful information on the use of the stud welding
machine
Cross-references in this operating manual are marked with this
symbol or are printed in italics
Fire hazard
Have a suitable re extinguisher for the working area ready before starting
work.
Work instruction
– List

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2 Symbols and Terms Used
Glossary
Automatic welding head: Device for welding of welding elements
Capacitor: Component for storage of electrical energy.
Electric arc: Autonomous gas discharge between two electro-
des when the current is high enough. A whitish light
is emitted in the process. The electric arc allows
very high temperatures to be generated.
Rectier: Electrical component that converts alternating vol-
tage into direct voltage
Stud feeder: Device for automatic feeding of welding elements
Stud welding gun: Device for welding of welding elements
Stud welding system: Stud welding unit including stud welding gun or
welding head
Stud welding unit: Device for provision of the electrical energy for
stud welding
Thyristor: Electronic component for contact-free switching of
high currents; switching takes place via the control
input
Welding element: Component such as stud or pin that is welded to
the workpiece
Welding parameters: Mechanical and electrical settings at the stud wel-
ding gun or welding head and at the stud welding
unit (e.g. spring force, charging voltage)
Workpiece: Components such as sheet metal or tubes to which
the welding elements are to be fastened

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3 Scope of Supply
3 Scope of Supply
The basic conguration of your stud welding gun contains the following parts:
No. of
pieces
Part Type Order No.
1 Stud welding gun
cable length 5 m
A 12 93-20-270
1 Operating manual A 12 E-BA 93-20-270
optional
1 Ceramic leg assembly 93-40-022
1 Shielding gas leg assembly 93-40-021
Inspect the shipment for visible damage and completeness immediately on re-
ceipt.
Report any transport damage or missing components immediately to the delive-
ring shipping agent or the dealer (address, see page 2).
4 Accessories
For example:
Mounting tool set 93-40-116
Protective hose, complete with zipper 80-11-430
Additional accessories can be found in our extensive accessories catalogue.

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5 Technical Data
5 Technical Data
Stud welding gun type A 12
for ARC stud welding according to current standards
Welding range M3 to M12, dia. 2 to 12 mm
Stud length 10 to 400 mm (depending on leg assembly)
Stud material Mild steel, stainless steel
Stud type Any type or shape (special chucks if required)
Length compensation 3 mm automatic
Lift Adjustment range 3 mm, lockable
Spring force Adjustable, arresting
Welding cable 5 m
IP Code IP 20 (protect against humidity)
Workplace noise level Up to 90 dB (A) may occur during welding
Ambient temperature limits 0 °C to 40 °C
Dimension L x W x H 200 x 65 x 140 mm
(without cable, with tripod leg guidance)
Weight 0.8 kg (without cable)

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6 Intended Use
6 Intended Use
The stud welding gun has been designed exclusively for use with standardised stud
welding elements. The use of any other elements will result in the desired strength
of the welded joint being diminished.
The stud welding gun must only be connected to HBS stud welding units.
Always check with the operating manual of your stud welding unit whether this
stud welding gun may be used.
Observation of the operating manual of the stud welding unit being used is also part
of the intended use.

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7 Warranty
7 Warranty
Please refer to the latest "General Terms and Conditions" for the scope of the
warranty.
The warranty does not cover faults caused by e.g.
– Normal wear,
– Improper handling,
– Failure to observe the operating manual,
– Failure to observe the safety precautions,
– Use for other than the intended purpose, or
– Transport damage.
Warranty entitlement shall no longer be valid if modications, changes or service
and repair work is carried out by unauthorised persons or without the knowledge of
the manufacturer. Invalidation of warranty entitlement shall also render the declara-
tion of conformity invalid. The CE marking shall be declared invalid by the manufac-
turer.
We expressly point out that only spare parts and accessories or components appro-
ved by us may be used. The same applies likewise to installed units from our sub-
suppliers.

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8 Design and Function
8 Design and Function
The stud welding gun A 12 is equipped with an integrated length adjustment for au-
tomatic compensation of length tolerance for the welding elements.
The body of the stud welding gun consists of a sturdy two-part plastic housing (2).
The control cable and the welding cable (3) are connected through the welding
gun handle to the welding gun.
Positioned at the front of the stud welding gun are the welding piston and the retai-
ning nut (6) used to x the manual chuck.
At the front of the stud welding gun, the tripod leg guidance (5) is installed. Here
the leg assemblies are mounted.
At the rear, there is the mechanism for lift adjustment (8), rotating graduated
ring (7) and for spring force adjustment (1).
At the front of the welding gun handle, the welding gun trigger (4) is installed. It is
used to trigger the welding process.
The stud welding gun is supplied with an adaptor for ARC chucks (9) (order no.
80-05-689).
The serial number is stamped on the welding gun handle.
Type plate
The type plate contains the following information:
– Manufacturer
– Type

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9 Welding Process
9 Welding Process
This stud welding gun may only be used for drawn arc stud welding.
Please refer to the original operating manual of the connected stud welding unit
for the welding procedure.

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10 Preparing the Stud Welding Gun
10 Preparing the Stud Welding Gun
Prepare the stud welding gun by
– mounting the chuck
– mounting the leg assembly
– adjusting lift and spring force
– adjusting the insertion depth (protrusion).
Do not connect the stud welding gun to the stud welding unit until it has
been prepared.
In this way you can avoid any unintentional starting of the welding process.

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10 Preparing the Stud Welding Gun
10.1 Mounting the Chuck
ARC chuck
Tighten the retaining nut again with the 14/17 mm double
open-ended wrench.
You thereby simultaneously tighten the chuck adaptor.
Screw the chuck onto the adaptor.
Secure the adaptor with a 17 mm double open-ended
wrench.
Tighten the chuck with a 14 mm double open-ended
wrench.
Damage through twisting
Never tighten the chuck if the adap-
tor is not held with a second double
open-ended wrench!
The interior units or the basic shell could
otherwise twist and be damaged.