Tweco Raider 10,000 Pro - Manual (Page 22)

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3.01 There is No Auxiliary Voltage and/or Welding Current
In examining this particular fault it must be remembered that an asynchronous generator with excitation by capacitors
has the characteristic of becoming automatically de-energized while it is functioning (no longer supplies current). Also an
asynchronous generator will not self-excite when it is started up if there is a short-circuit whether outside of the generator
(in the user circuit) or inside it (in the windings and in the control equipment).
TROUBLE
POSSIBLE CAUSE
REMEDY
The GFCI is open or when
actuated in the closed position
suddenly trips open. The reset of the G.F.C.I. must be
in the closed position. Check that
the user circuit does not have a
phase to earth. Close the GFCI and disconnect
the plugs from the current
sockets. If the GFCI does not
remain closed even if the reset is
slowly closed, this means that
the GFCI is faulty and that it
must be replaced.
The generator is connected to the
maximum load, in particular
induction motors. When starting, the current plugs
should not be connected directly
with the load, but with a switch
interposed that will allow the set
to be started with the load
disconnected. Remove the load in the starting
phase. If necessary, disconnect
the plugs from the current
sockets. If generator still does
not generate welding current
refer to test section for exciter
capacitors & Stator.
The + and - welding cables are in
short-circuit through electric
contact between them. The electrode & Work lead are
connected in short circuit
condition. Disconnect electrode & Work
leads. If generator still does not
generate welding current refer to
test section for exciter capacitors
& Stator.
Excitation Capacitors are
shorted. Disconnect the capacitors from
the generator and from the
equipment. Refer to test section
for excitation capacitors. If necessary, replace the
capacitors.
Output welding receptacles loose
or shorted. Check the cable connections to
the receptacles. Check for burnt
or loose receptacle insulation. Replace the receptacle parts
necessary.
Output Welding Rectifier is
shorted. Have Rectifier checked by
authorized service agent.
Faulty winding in stator. Have stator checked by
authorized service agent.
3.02 The Generator Is De-Energized when Load is connected
PROBABLE CAUSE CONTROLS REMEDIES
There is a short-circuit on the
user circuit. Check the load for shorts Repair load circuit.
Excessive overload; induction
motors (especially 2-pole)
connected of higher power than
the Generators specifications. See that the induction motors are
not of higher power than the
specification of the generator. Reduce load to within the
specifications of the generator.