Miller MSW-41 - Troubleshooting Circuit Diagram For 1.5 KVA, 110 Volts Model

TM-716 Page 16 MSW And LMSW Series
6-3. Troubleshooting Circuit Diagram For 1.5 KVA, 110 Volts Model
Resistance Values
a) Tolerance − 10% unless specified
b) Turn Off unit and disconnect plug
before checking resistance
R1 0.4 ohms
Test Equipment Needed:
162 466-C
A
Voltage Readings
a) Tolerance − 10% unless specified
b) Reference − as indicated
c) Wiring Diagram − see Section 8
V1 115 volts AC
V2 115 volts AC with S1 closed
V3 115 volts AC with PB1 closed
V4 115 volts AC with PB1 closed and TD1 not
timed out
V5 115 volts AC with W energized
V6 1.6 volts AC open-circuit voltage
V6
V2 V3
V1
V2
Contactor W
V4
V3
See Section
6-5 for
waveform A
V5/R1