Lincoln Electric PRO-CUT 55 SVM140-A Service Manual page 66

F-29
TORCH CONTINUITY AND SOLENOID TEST (continued)
Not used
6
inside
5
power
source
4
TEST PROCEDURE
1. Remove input power to the Pro-Cut 55
machine.
2. Remove the torch assembly from the
machine.
TROUBLESHOOTING & REPAIR
FIGURE F.5 - TORCH CONNECTOR - MACHINE END
White Pair
Black Pair
8
7
9
1
3
2
PRO-CUT 55
Electrode Lead
Connector
Blue Leads
Torch Solenoid
Vent Tube
White & Black Pairs
Air Hose
Red Leads
3. Using the ohmmeter, check the torch resis-
tances per Table F.5.
NOTE: Take the "Pin" test point measurements
at the machine end of the torch assem-
bly. See Figure F.5.
F-29
Electrode is
insulated from
Brass Body
outside
flex tubes
center
N.O.
Torch Trigger