Troubleshooting
Trouble
1. No welding current
Mains switch
connected,
green LED
does not
light up
2. No welding current
Mains switch
connected,
green LED
lights up
3. No welding current
Mains switch
connected,
green LED
lights up,
over-temperature yellow LED
lights up
Over-temperature indicator
flashes
4. Arc breaks during welding
5. Mains fuse or automatic
circuit breaker fails
6. Poor welding quality
(heavy spatter formation)
ATTENTION! Replaced fuses must be identical in terms of capacity. The use of fuses which are too
powerful invalidates any guarantee claim in the event of damage!
Care and maintenance
Thanks to its simple, efficient structure the rectifier re-
quires only a minimum amount of care and mainte-
nance. To ensure long-term, trouble-free service, the
following checks are recommended:
In the event of heavy dust accumulation, cleaning the
cooling air shafts is recommended from time to time.
Disconnect equipment from the mains before opening.
Repairs
Repairs to the equipment may only be carried out by
our service department or by persons authorised by
E+C.
10
Cause
Mains line interrupted
Welding cable connections
interrupted
Poor, or no earth
Operating time exceeded
Equipment overloaded
Automatic thermal safety device is
disconnected -
Fan continues to operate
Thermal sensor is defective
Cooling air flow is insufficient
Power component very dirty
Fault in power section
Arc drop voltage of electrode too
high (eg. electrode for gouging)
Insufficiently fused
Wrong safety device
Mains fuse fails during no-load
operation
Wrong polarity of electrode
Poor earth connection
Guarantee
The guarantee period is 12 months and applies to sin-
gle-shift operation, provided that the equipment is used
properly.
The guarantee covers the costs for replacement parts
and component groups including assembly time.
The guarantee does not cover wear and tear of com-
ponents due to operation. Improper use of the equip-
ment including damage caused by force invalidates the
guarantee.
Please forward the serial number of the equipment in
the event of any guarantee claim.
Return of the equipment requires our prior consent.
Transportation and related costs will be at the expense
of the purchaser (please refer to the General Sales
Conditions).
Remedy
Inspect mains line and mains
voltage
Check connectors
Create connection to workpiece
Adhere to duty cycle allowed
Wait until cooling period is over
Equipment will switch on indepen-
dently after a short time; IF NOT:
return equipment to service dept.
Ensure sufficient flow of cooling air
Open equipment and blow out with
dry compressed air
Switch machine off and back on
again. If fault recurs -> send
machine in for service
Use alternative electrode if
possible or a welder with a higher
welding output
Fuse mains correctly
(see technical data)
Return equipment to service dept.
Change poles on electrode,
Follow manufacturer's instructions
Attach earth terminal directly to
work piece
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