Use and Care Manual

2008 Cummins Inc. All rights reserved.
3-2
OVERRIDE
The Override pushbutton is used to:
S Terminate the following system time delays:
− Time Delay Engine Start (TDES)
− Time Delay Normal to Emergency (TDNE)
− Time Delay Emergency to Normal (TDEN)
S Stop the Utility Power Connected LED from
flashing as a result of a failure to connect to
or disconnect from the utility when command-
ed.
S Stop the Generator Power Connected LED
from flashing as a result of a failure to con-
nect to or disconnect from the generator set
when commanded.
S Cancel an active exercise period.
The engine cooldown (TDEC) time delay is not af-
fected by pressing this pushbutton.
COMPLETE SYSTEM TEST
A complete system test is recommended to verify
that the electrical system is working properly. Test-
ing the system once every three months is required
to make sure the transfer switch will transfer the
load to the generator set, should there be a utility
power failure.
To complete a system and periodic test,
1. Switch the main circuit breaker from the “ON”
to the “OFF” position.
2. Make sure the following occurs.
a. The generator control receives a signal to
start the generator set.
b. After the generator set starts and the TDNE
expires, the load is transferred from the util-
ity to the generator set.
3. Switch the main circuit breaker from the “OFF”
to the “ON” position.
4. Make sure the following occurs.
a. After a 10-minute TDEN time delay, the load
is transferred back to the utility.
b. Once the transfer switch is connected to util-
ity power, the generator set receives a sig-
nal to cool down the generator set.
c. After a 10-minutes TDEC time delay, the
generator set stops.
NOTE: When ending a test, you can bypass the re-
transfer time delay (TDEN) and cause the
immediate load retransfer by pressing the
Override button. The generator set stops af-
ter the engine cooldown time delay (TDEC).