7 MAINTENANCE
0463 641 001
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© ESAB AB 2018
Power source and wire feeder cleaning procedure
NOTE!
Always were safety gloves during cleaning.
1. Disconnect the power source from the mains socket.
2. Open the lid and release the tension from the pressure roller by turning the tension
screw (1) counter-clockwise and then pull it toward you.
3. Remove the wire and the wire bobbin.
4. Remove the torch and use a low pressure airline, taking care not to let the wire
consumable unravel, to clean the power source interior and power source air inlet
and outlet.
5. Inspect if the inlet wire guide (4), outlet wire outlet (2) or the feeder roller (3) are
worn and need replacement. See appendix WEAR PARTS for ordering numbers of
parts.
6. Remove and clean the feeder roller with a soft brush. Clean the pressure roller
attached to the wire feeder mechanism with a soft brush.
7.3 VRD periodic tests
Units fitted with VRDs shall have the periodic tests outlined in the table below conducted by
an accredited CIGWELD service provider. Testing shall be conducted at intervals as outlined
below.
• For transportable equipment, at least once every 3 months
• For fixed equipment, at least once every 12 months
Description Required parameters
VRD Open circuit voltage Less than 35 V (at nominal input voltage)
VRD Turn on resistance Less than 200 ohms
VRD Turn off time Less than 0.3 seconds
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