Technical data

TROUBLESHOOTING
CV ELECTRICAL POWER SYSTEM MAINTENANCE MANUAL 2A5A2-ELEC-MM-1-0 39
No
Problem
solved?
Yes
Measure voltage at UPS #1 outlets:
Outlets Acceptable Readings
2A5A2-OTL-EP02-1
2A5A2-OTL-EP02-2
2A5A2-OTL-EP02-4
2A5A2-OTL-EP02-7
120 ± 12 VAC
120 ± 12 VAC
120 ± 12 VAC
120 ± 12 VAC
No
Voltage OK? Yes
Done
No
Problem
solved?
Yes
At the 208/120 VAC 3ø distribution panel
#1, reset breaker control UPS #1.
Reset UPS #1.
Replace the power bar where the
defective unit is plugged (see Section
4.10, Replacing a Power Bar)
Replace UPS #1 (see Section 4.8,
Replacing a Control Power UPS)
Follow decision tree in Section 5.2,
Troubleshooting Subroutine – 10 kVA
480-208/120 VAC 3ø Transformer #1 or
#2 Power Check
Figure 5 Troubleshooting – Unit Plugged in UPS #1 Doesn't Work