ESAB A22 POB Instructions d'utilisation

334 771--001 9611

A22 POB

Tubeplate welding tools

Simplified service manual

LIST OF CONTENTS Page

SAFETY 4...........................................................

TECHNICAL DESCRIPTON 5..........................................

INSTALLATION 6.....................................................

OPERATION 10.......................................................

MAINTENANCE 10....................................................

SELECTION TABLE 11.................................................

ACCESSORY SET FOR INTERNAL WELDING 12.........................

ACCESSORY SET FOR EXTERNAL FILLET WELDING 13.................

ACCESSORY SET FOR WELDING TITANIUM 14.........................

WORKING RANGE 15.................................................

DIMENSION DRAWING 16.............................................

DIAGRAM 17.........................................................

CONNECTION DIAGRAM 18...........................................

SPARE PARTS LIST A22 POB 21.......................................

Rights reserved to alter specifications without notice

-- 3 --mvarnen1

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

SInstall and earth the welding unit in accordance with applicable standards.

SDo not touch live electrical parts or electrodes with bare skin, wet gloves or

wet clothing.

SInsulate yourself from earth and the workpiece.

SEnsure your working stance is safe.

FUMES AND GASES -- Can be dangerous to health

SKeep your head out of the fumes.

SUse ventilation, extraction at the arc, or both, to keep fumes and gases from

your breathing zone and the general area.

ARC RAYS -- Can injure eyes and burn skin.

SProtect your eyes and body. Use the correct welding screen and filter lens

and wear protective clothing.

SProtect bystanders with suitable screens or curtains.

FIRE HAZARD

SSparks (spatter) can cause fire. Make sure therefore that there are no

inflammable materials nearby.

MALFUNCTION

SCall for expert assistance in the event of malfunction.

READ AND UNDERSTAND THE INSTRUCTION MANUAL BEFORE

INSTALLING OR OPERATING THE EQUIPMENT

PROTECT YOURSELF AND OTHERS!

SAFETY

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SAFETY

Users of ESAB welding equipment have ultimate responsibility for ensuring that any-

one who works on or near the equipment observes all the relevant safety precau-

tions.

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 re-

gulations that apply to the work place.

All work must be carried out by trained personnel who are familiar with the operation

of the welding equipment.

Incorrect operation of the equipment may lead to a hazardous situation which can

result in injury to the operator and damage to the equipment.

1. Anyone who uses the welding equipment must be familiar with:

Sits operation

Sthe location of emergency stops

Sits function

Srelevant safety precautions

Swelding

To make this easier each switch, pushbutton or potentiometer is marked with a

symbol or text that indicates its function when activated.

2. The operator must ensure that:

Sno unauthorized person is stationed within the working area of the equipment

when it is started up.

Sthat no--one is unprotected when the arc is struck

3. The work place must:

Sbe suitable for the purpose

Sbe free from draughts

4. Personal safety equipment

SAlways wear recommended personal safety equipment, such as safety

glasses, flame--proof clothing, safety gloves.

SDo not wear loose--fitting items, such as scarves, bracelets, rings, etc., which

could become trapped or cause burns.

5. General precautions

SMake sure the return cable is connected securely.

SWork on high voltage equipment may only be carried out by a qualified

electrician.

SAppropriate fire extinquishing equipment must be clearly marked and close

at hand.

SLubrication and maintenance must not be carried out on the equipment dur-

ing its operation.

-- 5 --cra1d1ea

TECHNICAL DESCRIPTION

The POB tube plate welding tool is intended for TIG--welding of tubes into flat tube plates.

It is suitable for all types of weld joints, in certain cases using extra equipment.

The POB 12--60 welding tool is intended for use together with a spindle and a centering mandrel

according to the selection table on page 11.

POB 12--60 is intended for use with the power sources MECHTIG 315 INVERTER,

PROTIG 315 INVERTER, PROTIG 250 and PROWELDER 250

TECHNICAL DATA A22 POB

Max. continuous welding current 180 A/60 %

Max. pulsed welding current 200 A/60 %

Working range:

base specification

with titanium welding kit

with external fillet welding kit

with internal welding kit

12--60 mm

according to designation

Electrode angle for:

butt welding

internal fillet welding

external fillet welding

internal welding

(See page 15)

parallel with tube axis

30_to tube axis

15_to tube axis

90_to tube axis

Electrode diameter 1.6 and 2.4 mm

Speed of rotation 0.3--4.5 r.p.m

Wire feed speed 0.15--1.5 m/min

Wire diameter 0.8 and 0.91 mm

Length of welding cable 8m

Weight

tool

cable and hose bundle

4.5 kg

Order no.

POB 12--60, base version with wire feed unit 333 893--881

Base version can be fitted with accessory kits for

-- external fillet welding

-- titanium welding

-- internal welding diameter:

9.5--15 mm

15--20 mm

20--30 mm

333 897--880

441 000--880

441 131--880

441 132--880

441 133--880

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When ordering an accessory set for internal welding, please indicate both the inner diameter

(D) of the tube and the distance of the welding joint to the outside (A) of the plate.

-- 6 --

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INSTALLATION

1. Welding power source, see separate instruction manual.

2. Dimension drawing, see page 16.

3. Diagram, see page 17.

4. Connection diagram, see page 18 and page 19.

5. Tool dismantling:

It is necessary to dismantle the tool.

SFor adjustment of the ”home” position.

SIn the event of a fault.

Dismantling:

SRemove the three bolts (1) in the support ring (2).

SRemove the screw (4).

SPull off the support tube (3).

SCarefully withdraw the entire inner assembly (5) backwards, being careful not to

damage the microswitch.

-- 7 --cra1d1ea

6. Adjusting the ”home” position:

SRemove the four bolts (7).

SWithdraw the gear ring. The lifting cog influencing the microswitch can now be

moved a full turn in 22˚, 5 steps, starting at 11˚, 25 counted from 12 o’clock.

7. Tool reassembly:

SInsert the inner assembly (5) in the outer casing (6). Make sure that the microswitch

is not located just opposite the lifting cog.

SRotate the parts slightly relative to one another, so as to engage the motordrive gear

and the gear ring.

SFit the support tube (3), (lightly grease the contact surface of the sealing ring with a

suitable grease, e.g. Barrierta). Fit the support plate (2) with the screws (1).

SFit the screw (4).

-- 8 --

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8. Replacement and fitting of the electrode:

SCut off the electrode to some 45 mm and grind it to the desired angle.

SRemove the gas cup (3).

SRemove the electrode nozzle (2) and the electrode nozzle with gas lens.

SReplace the electrode. When changing to a different electrode diameter it is necess-

ary also to change the electrode nozzle (2) and the collet (1).

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The adjustment of the electrode is important to guarantee the repeatability for continued

welding.

Use ready--ground electrodes of the same length and fit them in the same position.

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-- 9 --cra1d1ea

9. Adjustment of the welding diameter:

SSlacken the locking screw (8).

SUse a screwdriver to turn the gear wheel (7),

which is mounted on the link arm (3), so

that the correct welding circle diameter is

obtained.

SSlacken the screw (4).

SAdjust the electrode angle by rotating

the electrode holder (6).

STighten the locking screws (4 and 8).

10. Adjusting the arc length:

SAdjust the length of the arc (i.e. the

distance between the tip of the

electrode and the workpiece) by

screwing the spacing tube (9) in or out.

SSecure the setting by means of the

locking nut (10).

11. Inserting the filler wire:

SCut off any bent length of the wire

and file off the end.

SFeed the wire into the nozzle.

SAdvance the wire through the tool

(by running the feed unit manually).

12. Replacing the wire nozzle:

SUndo the screw (5) and remove the nozzle,

which is threaded on to the wire guide.

13. Replacing the wire guide:

SDismantle the tool.

SRemove the wire nozzle from the wire

guide and remove the wire guide from the

inner part of the tool.

SScrew the internally bevelled end of the

new wire guide into the feed unit.

SFit the wire nozzle.

SMount the tool.

-- 1 0 --

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OPERATION

The POB tube welding tool connected to the programmable welding power

source PROTIG 250, PROWELDER 250, PROTIG 315 INVERTER or

MECHTIG 315 INVERTER:

SSet all the welding parameters on the programmable PROTIG 250, PROWELDER 250,

PROTIG 315 INVERTER or MECHTIG 315 INVERTER power source unit.

SAdjust the position and the angle of the electrode.

SStart the automatic welding sequence by pressing the ”Start” button on the power source

or directly on the POB tube welding tool.

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It is important that the tool is suspended according

to the adjoining figure.

For balancing to weightlessness a counterbalancing

device is used. Ordering number 332 330--005

MAINTENANCE

SClean the tool as necessary.

SCheck wearing parts at regular intervals and replace as necessary.

SCheck that all hoses and connections for gas, water, welding current and control current

are undamaged and correctly connected.

SCheck that the correct electrode is being used and that it is properly ground.

By separating the inner and outer parts from each other the equipment is easy to service.

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