Technical data

TROUBLESHOOTING
CV ELECTRICAL POWER SYSTEM MAINTENANCE MANUAL 2A5A2-ELEC-MM-1-0 36
5.4 PRM Hotel Power #2 Doesn't Work
Procedure
1. Follow the troubleshooting steps in Figure 3.
0.
No
Problem
solved?
Yes
Yes
Voltage OK? No
At hotel #2 boost transformer, measure voltage at the input:
Negative Probe Positive Probe Acceptable Reading
tap 0
tap 210
208 ± 21 VAC
Done
At the 208/120 VAC 3ø distribution panel
#2, reset breaker PRM hotel power #2
Replace hotel #2 boost transformer
(see Section 4.6, Replacing a Hotel
Boost Transformer)
Follow decision tree in Section 5.2,
Troubleshooting Subroutine – 10 kVA
480-208/120 VAC 3ø Transformer #1 or
#2 Power Check
Figure 3 Troubleshooting – PRM Hotel Power #2 Doesn't Work