TM 10-8145-222-23
0052
TEST CONTINUED
Table 3. Cable Assembly P1B.
Termination
Wire Ref No.
Wire Color
Result
From
To
1
P1B-A
Ext Pwr A Phase
Red
<0.5Ω
2
P1B-B
Ext Pwr B Phase
Black
<0.5Ω
3
P1B-C
Ext Pwr C Phase
Orange
<0.5Ω
4
P1B-N
Ext Pwr Neutral
White
<0.5Ω
5
P1B-G
Ext Pwr Ground
Green
<0.5Ω
6. If Results column in Table 3 indicates greater than 0.5 ohm, perform cable assembly replace per this WP.
7. Reconnect wiring to external electrical power supply.
8. Remove tags from wiring.
9. Reconnect battery (WP 0053, Reconnect).
10. Place MTRCS back into desired mode of operation (TM 10-8415-222-10, Operating Procedures).
Test Cable Assembly P2B
WARNING
High voltage is present when the system is in operation. Use extreme care not to
contact wires during operation as serious injury or death to personnel could result.
The MTRCS contains high voltage sources and exposed rotating parts. Make sure
that power cables are disconnected from the MTRCS and that the refrigeration unit is
shut down before performing maintenance on the unit. Failure to comply with this
warning can result in serious injury or death to personnel.
1. Make sure external electrical power unit is turned OFF.
2. Disconnect P2B (Figure 7) from P2A (Figure 6), if connected.
3. Use a multimeter set to AC voltage scale to verify no voltage is present on external electrical power supply
output terminals.
4. Tag and disconnect wiring to external electrical power supply.
5. Use a multimeter set to ohms scale to make continuity checks as shown in Table 4.
6. If Results column in Table 4 indicates greater than 0.5 ohm, perform cable assembly replace per this WP.
