Miller MSW-41 - Troubleshooting Circuit Diagram For 1.5 & 2.5 KVA Models

TM-716 Page 15MSW And LMSW Series
6-2. Troubleshooting Circuit Diagram For 1.5 KVA (110 Or 220V) And 2.5 KVA
(220V) Models
Resistance Values
a) Tolerance − 10% unless specified
b) Turn Off unit and disconnect plug
before checking resistance
R1 0.4 ohms (110V, 1.5 kVA models)
R1 0.8 ohms (220V, 2.5 kVA models)
R1 1.1 ohms (220V, 1.5 kVA models)
Test Equipment Needed:
162 467-B
Voltage Readings
a) Tolerance − 10% unless specified
b) Reference − as indicated
c) Wiring Diagram − see Section 8
V1 115 or 230 volts AC
V2 115 or 230 volts AC with S1 closed
V3 1.6 volts AC open-circuit voltage (1.5 kVA)
V3 2.5 volts AC open-circuit voltage (2.5 kVA)
V1
See Section
6-5 for
waveforms A,B
V2/R1
V3
A,B