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DYNA MMA 500S
、
500GTS
、
500(H)S
、
500(H)GTS
、
630S
、
630GTS Operating Manual
9.04 Power source problems
Description Possible
Cause
Remedy
1 The welding arc can not
be established.
A The Primary supply voltage
has not been switched on.
B The welding power source
switch is switched off.
C Loose connections internally.
A Switch on the primary supply voltage.
B Switch on the welding power source.
C Have an accredited FCW service
agent repair the connection.
2 Maximum output welding
current can not be
achieved with nominal
Mains supply voltage.
Defective control circuit.
Have an accredited FCW service agent
inspect then repair the welder.
3 Welding current reduces
when welding.
Poor work lead connection to
the work piece.
Ensure that the work lead has a positive
electrical connection to the work piece.
4 No gas flow when the
torch trigger switch is
depressed.
A Gas hose is cut.
B
Gas passage contains
impurities.
C Gas regulator turned off.
A Replace gas hose.
B Disconnect gas hose from the rear of
power source then raise gas
pressure and blow out impurities.
C Turn gas regulator on.
Table 19
Notice:
Can move the equipments that the power supply doesn't fixedly mean to link to work with gearing at the some
position.
