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F-17
TORCH, TORCH CABLE ASSEMBLY, INTERNAL TRIGGER,
d. Disconnect the trigger lead
4-pin connector by unscrewing it.
e. Disconnect the electrode lead
using a 9/16" open-end wrench
to remove the brass adaptor fit-
ting attached to the bulkhead
connector.
f.
Disconnect the pilot lead by
removing the wing nut marked
PILOT.
lead. Do not remove any of the
leads below the brass nut.
g. Rotate
cable
to remove it from the bolt head.
Do not remove the strain relief
clamp from around the three
leads.
h. Pull the trigger lead, electrode
lead, and pilot lead bundled in
the strain relief clamp out of the
machine through the rubber boot.
PRO-CUT 60
TROUBLESHOOTING & REPAIR
AND SAFETY CIRCUIT TEST
Remove only the pilot
and
lift
the
torch
strain
relief
clamp
1
2
FIGURE F.4 - Torch and Cable Resistance Test Points
5. Move the torch cable assembly
to a convenient work area.
6. Perform the following resistance
tests using a volt/ohm meter
(Multimeter).
and F.5 for Torch and Cable
Resistance Tests Points and
Circuit Diagram.
a. Test for resistance on 4-pin
connector of 1 ohm or less
(continuity) from:
- pins #1 to #3.
- pin #3 to the pilot lead.
- pilot lead to the torch
nozzle.
- pins #2 to #4 when the torch
trigger is pulled.
NOTE: Remove the torch nozzle with
the supplied wrench to per-
form this test.
- electrode lead to the torch
electrode.
b. Test
for
(500K ohm minimum) from
the pilot lead to the electrode
lead.
SHIELD CUP
ASSEMBLY
TRIGGER
ELECTRODE
4- PIN CONNECTOR
ASSEMBLY
3
(END VIEW)
4
4 - PIN CONNECTOR
ELECTRODE LEAD
PILOT LEAD
See Figures F.4.
high
resistance
NOZZLE
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