Rotate the heat switch through all settings. If the
voltage is not read at any setting, the heat switch may be
defective. Actuate the weld limit switch; observe the
reading goes to zero. Release the weld limit and operating
switches, the reading should remain at zero.
9.1.3
TEST LEAD
CONNECTION
METER
READING
PROBLEM
IF NO
READING
PRESS
OPERATING
SWITCH
WELD LMIT
SWITCH
ACTUATED
AUTO/MANUAL
SWITCH
L2 FU1-1
115VAC
Bad fuse connection
MANUAL
L2 FU1-2
115VAC
Open fuse
L2 PB1-1
L2 PB1-2
L2 LS1-1
115VAC
115VAC
115VAC
Open wire to operating
switch
Bad operating switch
Open connection to weld
limit switch
X
X
L2 LS1-2
115VAC
Open weld limit switch
L2 CR1-1
115VAC
Open wire to contactor
L2 CR1-2
115VAC
Bad contactor
X
L2 S1-1
L2 TR1-8
115VAC
115VAC*
Open wire to heat switch
Bad timer circuit momentary
X
AUTO
Note: to perform repair consult section 13 for parts
identification.
S2 closed for all tests.
*Voltage present for 1 sec. when timer is set to 1 sec.
13
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