Thetford NR740 - Manual (Page 6)

DC0040(K), DC0051(K), DE0040, DE0051, DE0240T, DE0251T,
DC0740(X), DE0740(X), DC0751(X), DE0751(X) Models
Refrigerator Service Manual 6
Troubleshooting- Procedure D
Compressor Amp Draw
Measure Amperage at
‘A’ on the Compressor
(See Figure 6)
Normal
40Watt = 1.6 – 2.0Amps
60Watt = 2.7 – 3.3Amps
40Watt < 1.6Amps
60Watt < 2.7Amps
40Watt > 2.0Amps
60Watt > 3.3Amps
Compressor
Failure
Compressor
Failure
Change
Cooling Unit
Change
Cooling Unit
Note: Measurements taken with 12.8V DC power supply.
AR
T0
19
52
A
AR
T01953
Figure 6. Measuring Compressor Amp Draw
Measuring Compressor Amp Draw