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14 

Operators Manual

Quality

 

 

Reliability

 

 

Performance

8 General Maintenance

Before removing the power 
source covers, ENSURE that the 
equipment is disconnected from 
the mains power supply. When the 
equipment is energised LETHAL 
VOLTAGES are present on the 
electrical components enclosed.

Dust

Care should be taken to prevent excessive 
build-up of dust and dirt within the welding 
power source. It is recommended that at 
regular intervals, according to the prevailing 
conditions, the equipment covers be removed 
and any accumulated dust be removed by the 
use of dry, low pressure compressed air, or a 
vacuum cleaner.

Wirefeed

In order to obtain the most satisfactory 
welding results from the G.M.A.W. process, 
the wirefeed must be smooth and constant. 
Most causes of erratic wirefeed can be cured 
by basic maintenance. Check that the:

1  Feed rolls are the correct size and type for 

the wire in use. Check also that the drive 
groove is aligned with the wire and that 
the groove is not worn;

2  Gun cable liner is clear of dust and swarf 

build-up. When replacement becomes 
necessary, fit only the correct liner (see 
page 22). The build-up of dust can be 
minimised by regular purging of the liner 
with dry compressed air. This may be 
conveniently done each time the wire 
spool is replaced;

3  Welding tip is free of obstructions such 

as spatter build-up. Ream out the tip 
bore with a suitable size oxy-tip cleaner. 
Replace the welding tip as it becomes 
worn;

Fig 8

 Gun Position

Gun Position

For “down hand” fillet welding, the gun is 
normally positioned as shown in Figure 8 
below with the nozzle end pointing in the 
direction of travel.

Fig 7

 “Bad” Weld

A “bad” weld is shown in Figure 7. The weld 

has not penetrated the joint root, and there 

is poor side wall fusion. This lack of fusion 
would normally be corrected by increasing 
the arc voltage, or by increasing both 
wirefeed speed and arc voltage to achieve a 
higher current weld setting.

Содержание WELDMATIC 270C

Страница 1: ...CP136 40 Rev B Weldmatic 270C compact internal wirefeeder Operators Manual Weldmatic 270C MIG welder Model No CP136 2 Iss A 0812...

Страница 2: ...Welding Industries of Australia An ITW Company Telephone 1300 300 884 Facsimile 1300 301 884 Email Info welding com au www welding com au...

Страница 3: ...fe Practices 2 1 Introduction 5 2 Receiving 5 3 Specifications 6 4 Controls 7 5 Installation 9 6 Normal Welding Sequence 12 7 Basic Welding Information 13 8 General Maintenance 14 9 External Trouble S...

Страница 4: ...Filter Lens Amps TIG MMAW MIG Pulsed MIG 0 100 10 9 10 12 13 100 150 11 10 10 12 13 150 200 12 10 11 11 12 12 13 200 300 13 11 12 13 12 13 300 400 14 12 13 14 400 500 13 14 14 500 14 14 Read first Th...

Страница 5: ...unless coating is removed from the work surface the area is well ventilated or the operator wears an air supplied respirator Work in a confined space only while it is being ventilated and if necessar...

Страница 6: ...nitrogen or carbon dioxide and using protective equipment as recommended in AS 1674 2 Water filling just below working level may substitute for inerting Hollow castings or containers must be vented b...

Страница 7: ...m to 1 2mm diameter The smaller wire sizes are used when welding at lower currents such as sheet metal applications Increasing the wire diameter permits higher welding currents to be selected A common...

Страница 8: ...urrent 30 270 Amps Open Circuit Voltage 17 41 V Shipping weight 127 kg Power source weight 85 kg Mains Circuit Breaker Rating 25 Amps Supply plug 15 Amp 240 V for initial commissioning only Fitted Sup...

Страница 9: ...o not switch the equipment off as the cooling fan will assist the resetting of the thermostats 4 Controls 3 Arc start This control can be set to modify arc starting conditions For many applications th...

Страница 10: ...owed by rapid acceleration so that the arc does not flare up and damage the tip Even if an arc is not established within one second of the gun switch being operated the wire feed accelerates to select...

Страница 11: ...fitted with a 3 metre 3 core 2 5 mm2 Heavy Duty PVC mains power supply cable with moulded 3 pin 15 Amp Single Phase plug 15 Amp Supply Limited Output To operate the machine with the 15 Amp plug from...

Страница 12: ...Successful Operation Successful operation will depend on a number of factors Variation in circuit breaker thresholds Ambient temperature Number of previous circuit breaker operations Actual weld condi...

Страница 13: ...d connection points for welding current shielding gas and gun switch control To attach the gun cable assembly to the wirefeeder mechanism engage the mating parts of the male and female Euro connectors...

Страница 14: ...he gas valve is de energised and the flow of shielding gas ceases Compression screw Top roller arms Fig 5 WF042 Four Roll Drive Inlet guide Drive rollers Feeding the Consumable Wire At the wirefeeder...

Страница 15: ...excess build up of spatter When welding aluminium particular care must be taken with all aspects of shielding gas delivery and workpiece preparation in order to avoid weld porosity Establishing a Wel...

Страница 16: ...ze and type for the wire in use Check also that the drive groove is aligned with the wire and that the groove is not worn 2 Gun cable liner is clear of dust and swarf build up When replacement becomes...

Страница 17: ...identify the fault condition the equipment should be returned to a WIA Service agent Phone 1300 300 884 for details of your nearest service agent Power source has no output and no wirefeed when gun s...

Страница 18: ...s required 5 Check the work piece surface and MIG wire for contamination Water oil grease or paint can result in porosity in the weld the equipment off as the cooling fan will assist the resetting of...

Страница 19: ...Weldmatic 270C Model No CP136 2 Iss A 08 12 17 10 Circuit Diagram Power Source Fig 9 Power Source Circuit Diagram...

Страница 20: ...Reliability Performance 11 1 Assembly and Parts List Weldmatic 270C Power Source Fig 10 Weldmatic 270C Power Source Assembly 9 8 14 12 16 18 5 6 7 3 2 1 17 15 23 19 21 22 28 33 34 30 32 29 27 26 25 2...

Страница 21: ...0304 Plastic Front 1 20 L0022 Control Transformer 1 21 E0058 Contactor 1 22 E0041 Gas Valve 24 vdc 1 23 PWA010N Fan On Demand PCB 1 24 FAN008 Fan Assembly 1 25 TFM061 Welding Transformer Assembly Wire...

Страница 22: ...WF026 0 6 0 8 mm Solid Wire 2 WF028 1 2 1 6 mm Solid Wire 2 WF029 1 0 1 2 mm Aluminium 2 WF030 1 0 1 2 mm Flux Cored Wire 2 WF031 1 2 1 6 mm Flux Cored Wire 2 3 WF037 Pressure screw complete 1 4 W26...

Страница 23: ...ips page 24 Contact Tip 3 BE4335 Gas Diffuser Head 4 BE4323 Cap 5 BEQT2 45 BEQT2 30 Body Tube 2 45o Body Tube 2 30o 6 GUN002 Handle Kit includes both halves screws trigger 7 GUN003 Trigger 8 GUN005 Ri...

Страница 24: ...un end compress the liner within the gun cable then cut it 20 mm past the end of the body tube 5 Refit head tip and nozzle Fig 13 Replacing the gun cable liner Wire diameter Short series 25mm 0 6 mm B...

Страница 25: ...ded in the original purchase package The obligation of Welding Industries of Australia under this warranty is limited to the circumstances set out above and is subject to The customer being able to pr...

Страница 26: ...24 Operators Manual Quality Reliability Performance Notes...

Страница 27: ...Weldmatic 270C Model No CP136 2 Iss A 08 12 25 Notes...

Страница 28: ......

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