Generac Power Systems RG10090 Owner's Manual page 26

Operation
Transfer Switch Manual Operation
DANGER
Electrocution. Do not manually transfer under
load. Disconnect transfer switch from all
power sources prior to manual transfer. Fail-
ure to do so will result in death or serious in-
jury, and equipment damage.
Prior to automatic operation, manually exercise transfer
switch to verify there is no binding or interference with
correct operation of the mechanism. Manual operation of
transfer switch is required if automatic operation fails.
IMPORTANT NOTE: Always use applicable transfer
switch owner's manual for actual manual transfer
switch operation instructions. The information pre-
sented here describes a typical 1-phase V-style trans-
fer switch, which
applications. See specific manual for 3-phase trans-
fer switch.
Transfer to Generator Power
Proceed as follows to manually transfer to standby power
and start the generator when utility power fails:
1. Press OFF on control panel. A red LED illuminates
to verify system is OFF.
2. Set generator MLCB (generator disconnect) to
OFF (OPEN).
3. Turn off utility power supply to transfer switch using
the means provided (such as a utility MLCB).
4. See Figure 4-3. Use the manual transfer handle
(A) inside the transfer switch to set main contacts
to STANDBY (loads connected to standby power
source) (C).
Figure 4-3.
Figure 4-3. Manual Transfer Switch Operation
(Typical)
5. Press MANUAL on control panel. Engine cranks
and starts.
6. Allow engine to run for two minutes to bring it up to
normal operating temperature.
26
(D000132)
is not used for 3-phase
A
B
C
7. Set generator MLCB (generator disconnect) to ON
(CLOSED).
Transfer Back to Utility Power
Proceed as follows to manually transfer back to utility
power and shut down generator when utility power is
restored:
NOTE: Verify utility voltage has returned and is at the cor-
rect value.
1. Set generator MLCB (generator disconnect) to
OFF (OPEN).
2. Allow engine to run for two minutes at no-load to
bring it up to normal operating temperature.
3. Press OFF on control panel to shut down engine.
4. Verify utility power supply to transfer switch is
turned off.
5. See Figure
side the transfer switch to set main contacts to
UTILITY (loads connected to utility power source)
(B).
6. Turn on utility power supply to transfer switch using
the means provided (such as a utility MLCB).
7. Press AUTO on control panel. A green LED illumi-
nates to verify system is in AUTO.
Removal From Service During Utility
Outage
If, during prolonged utility outages, the user wishes to re-
move unit from service to conserve fuel, reduce run
hours, or to perform maintenance tasks, then proceed as
follows.
IMPORTANT NOTE: Failure to abide by this proce-
dure can result in equipment damage.
1. Turn utility MLCB to OFF (OPEN).
2. Open viewing window. See
3. Set generator MLCB (generator disconnect) to
OFF (OPEN).
4. Press OFF on the control panel. A red LED will illu-
minate to verify system is in OFF mode.
NOTE: Complete the additional steps listed below
if inspection and/or maintenance tasks are to be
performed.
006375
5. Remove T1 fuse from transfer switch.
6. Pull up rubber flap covering fuse holder and re-
move 7.5 amp fuse.
7. Remove negative battery cable (black) from nega-
tive battery (-) terminal.
8. Place a DO NOT OPERATE tag or placard on both
the control panel and transfer switch.
Spark-Ignited Stationary Generators Owner's Manual
4-3. Use the manual transfer handle in-
Activating the Unit.