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Table 8 - Maintenance Bypass Switch State Change Procedures
(refer to Table 9 for description of states)
From State
To State
Procedure
Normal
Overlap
1. Select Manual Bypass Mode on UPS.
2. Verify load on bypass by observing front panel of UPS.
3. Close Breaker 2.
Overlap
Normal
1. Open Breaker 2.
2. Select Automatic Transfer to Inverter Mode on UPS.
Overlap
UPS
Unloaded
Open Breaker 3.
UPS
Unloaded
Overlap
1. Select Manual Bypass Mode on UPS.
2. Verify load on bypass by observing front panel of UPS.
3. Close Breaker 3.
UPS
Unloaded
Maintenance
1. Turn Off UPS
2. Open Breaker 1.
Maintenance
UPS
Unloaded
1. Close Breaker 1.
2. Turn On UPS
Maintenance
Load Off
Open Breaker 2. (This removes power from load!)
Load Off
Maintenance
Close Breaker 2.
Load Off
Test UPS
1. Close Breaker 1.
2. Turn On UPS, if desired.
Test UPS
Load Off
1. Turn Off UPS.
2. Open Breaker 1.
Test UPS
Normal
1. Turn Off UPS.
2. Close Breaker 3.
3. Turn On UPS.
Normal
Test UPS
Open Breaker 3. (This removes power from load!)
Normal
Test Battery
Open Breaker 1. Battery will discharge while Breaker 1 is open.
Test Battery
Normal
Close Breaker 1.
