Lincoln Electric IDEALARC DC-600 Service Manual page 59

F-15
CONTROL TRANSFORMER (T2) VOLTAGE TEST (continued) (continued)
FIGURE F.2 - Control Transformer X1 and X2 Test Connections
LEFT SIDE OF
LIFT BAIL ASSEMBLY
6. Test for 115 VAC between leads X1 and X2.
NOTE: If the main AC input supply voltage varies,
the Control Transformer voltage will vary
by the same percentage.
a. Connect one end of an insulated alligator clip
to the X1 connection at the Input Contactor
(CR1) interlock. See Figure F.2.
b. Connect the other end of the alligator clip to
one of the meter probes. Be sure that neither
the alligator clip nor the meter probe touches
any metal surfaces.
c. Connect the other meter probe to the X2 con-
nection at the secondary winding thermostat.
See Figure F.2.
d. Apply current Input Power to DC-600.
TROUBLESHOOTING AND REPAIR
CONTROL
TRANSFORMER
METER
PROBE
IDEALARC
INPUT
CONTACTOR (CR1)
ALLIGATOR CLIP CABLE
CASE BACK
7. Read meter for 115 VAC.
a. If 115 VAC is present, the Control Transformer
is functioning properly.
b. If 115 VAC IS NOT present, go to Step 8.
8. If 115 VAC is not present between leads X1 and
X2, test for correct main AC input power to the
Control Transformer primary windings (H1, H2, H3,
etc.) See Wiring Diagram.
a. If the correct main AC input power to the
Control Trans-former primary windings is pre-
sent AND the secondary voltage is not correct,
the Control Transformer may be faulty.
Replace.
® DC-600
F-15
X1
INSULATED