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Section 2 -- Operation
Carrier Air-cooled 7 kW, 12 kW and 15 kW Generators
OPERATION
2.5 MANUAL TRANSFER OPERATION
2.5.1 TRANSFER TO GENERATOR
POWER SOURCE
To start the generator and activate the transfer switch
manually, proceed as follows:
1. Set the generator's AUTO/OFF/MANUAL switch
to OFF.
2. Set the generator's main circuit breaker to its OFF (or
open) position.
3. Turn OFF the utility power supply to the transfer
switch using the means provided (such as a
utility main line circuit breaker).
_Do not attempt to activate the transfer switch
manually until all power voltage supplies to
the switch have been positively turned off.
Failure to turn off all power voltage supplies
may result in extremely hazardous and possibly
fatal electrical shock.
4. Use the manual transfer handle inside the transfer
switch to move the main contacts to their "Standby"
position, i.e., loads connected to the standby power
source (Figure 2.2).
Figure 2.2 - Manual Transfer Switch Operation
LOADCONNECTEDTO UTILITY POW'ERSOURCE
LOADCONNECTEDTO STANDBYPOWER SOURCE
MANUALTRANSFER
HANDLE
TRANSFER SWITCH
OPERATmNG LEVER
5. To crank and start the engine, set the
AUTO/OFF/MANUAL switch to MANUAL.
6. Let the engine stabilize and warm up for a few
minutes.
7. Set the generator's main circuit breaker to its ON (or
closed) position. The standby power source now
powers the loads.
2.5.2 TRANSFER BACK TO UTILITY POWER
SOURCE
When utility power has been restored, transfer back to
that source and shut down the generator. This can be
accomplished as follows:
1. Set the generator's main circuit breaker to its OFF (or
open) position.
2. Let the engine run for a minute or two at no-load to
stabilize the internal temperatures.
3. Set the generator's AUTO/OFF/MANUAL switch to
its OFF (or open) position. The engine should
shut down.
4. Check that utility power supply to the transfer switch
is turned OFF.
z_Do not attempt to activate the transfer switch
manually until all power voltage supplies
to the switch have been positively turned off.
Failure to turn off all power voltage supplies
may result in extremely hazardous and possibly
fatal electrical shock.
5. Use the manual transfer handle inside the transfer
switch to move the main contacts back to their
UTILITY position, i.e., loads connected to the utility
power source (Figure 2.2).
6. Turn ON the utility power supply to the transfer
switch using the means provided.
7. Set the system to automatic operation as outlined in
"Automatic Transfer Operation," Section 2.3.
2.6 SETTING THE EXERCISE TIMER
This generator is equipped with an exercise timer. Once
it is set, the generator will start and exercise once every
seven days, on the day of the week and at the time of day
the following sequence is completed. During this
exercise period, the unit runs for approximately 12
minutes and then shuts down. Transfer of loads to the
generator output does not occur during the exercise
cycle.
A switch on the control panel (see Figure 2.1) permits
selection of the day and time for the system to exercise.
At the chosen time, perform the following sequence to
select the desired day and time of day the system will
exercise.
1. Verify that the AUTO/OFF/MANUAL switch is set
to AUTO.
2. Hold down the "Set Exercise Time" switch until the
generator starts (approximately 10 seconds) and
then release.
3. The generator will start and run for approximately 12
minutes and then shut down on its own. The
exerciser will then be set to run at that time of day
every week.
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