85
FAULT CAUSE REMEDY
CAUTION!
SHOULD IT BE NECESSARY TO REPLACE FUSES, IT IS ESSENTIAL THAT FUSES OF THE SAME AMPERAGE BE USED. NO
WARRANTY CLAIMS WILL BE ACCEPTED IN THE EVENT OF DAMAGE RESULTING FROM THE USE OF HIGHER-RATED
FUSES.
13. REMOTE CONTROL UNIT DOES
NOT FUNCTION;
all other control functions
are operative
Remote control cable
is not properly connected
Plug in the remote control cable
the right way round and screw tight.
Remote control cable is faulty Change the remote control cable
Remote control unit is faulty Change the remote control unit
10-pin remote control socket
is faulty
Measure the voltage at the socket.
If necessary, change the socket.
Fuse 2F2, or 2F3 is defective Change the fuse
14. DIGITAL AMMETER STAYS DARK
Mains switch ON;
control lamp is lit up
15. NO GAS POST-FLOW
Tungsten electrode becomes
discoloured after end of welding
Gas post-flow time is set too short
Increase the gas post-flow time
with dial - the time will depend upon
the welding current and the diameter of
the tungsten electrode
Replace the TC 3
RET 34. pcb is defective Replace the RET 34. pcb
16. FK7 COOLING UNIT DOES NOT
WORK
Mains switch ON;
control lamp is lit up;
function selector switch is in
or position
Plug in and secure the 5-pole plug at the
rear of the machine
Cooling unit is not plugged in
(Over-temperature indicator is lit up)
Cooling unit overload relay has tripped
Press the reset butten; if the relay trips
again, see Pt. 17
17. LE RELAIS DE SURCHARGER
POUR LE REFRIGERATEUR FK7
EST DECLENCHE
Mains switch ON;
control lamp is lit up
Wrong tripped current has been set
Set tripping current to 0.7A (see Fig. 50)
Pump motor is faulty Change the motor
Change the pump, check the coolant,
change if necessary
Water pump is stuck
Overload relay is faulty Replace the relay
Replace the TC 3 or RET 34. pcbTC 3 control unit or RET 34. pcb
is defective
TC 3 control unit is defective
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