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.
3.5.2 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.
DANGER
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 elec-
trical shock.
5. Use the manual transfer handle inside the trans-
fer switch to move the main contacts back to their
UTILITY position, i.e., loads connected to the util-
ity power source (Figure 3.2).
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.
3.6 SETTING THE EXERCISE TIMER
The 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 approx-
imately 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 3.1) permits
selection of the day and time for system exercise. To
select the desired day and time of day, the following
sequence must be performed at that time.
1. Verify that the AUTO/OFF/MANUAL switch is set
to AUTO.
2. Hold down the set timer switch until the genera-
tor starts (approximately 10 seconds) and then
release.
3. The generator will start and run for approximate-
ly 12 minutes and then shut down on its own.
The exerciser will then be set to run at that time
of day every week.
NOTE:
The exerciser will only work in the AUTO mode
and will not work unless this procedure is per-
formed. The exerciser will need to be reset every
time the 12-volt battery is disconnected and then
reconnected. The exerciser WILL NOT work if
dip switch 2 (Remote Not Auto) on the controller
printed circuit board is ON.
3.7 PROTECTION SYSTEMS
3.7.1 LOW OIL PRESSURE SWITCH
This switch (Figure 3.3) has normally closed contacts
that are held open by engine oil pressure during
cranking and operating. Should oil pressure drop
below the 8 psi range, switch contacts close, and the
engine shuts down. The unit should not be restarted
until oil is added, and the AUTO/OFF/MANUAL switch
must be turned to OFF and then back to AUTO.
3.7.2 HIGH TEMPERATURE SWITCH
This switch’s contacts (Figure 3.3) close if the tem-
perature should exceed approximately 140º C (284º
F), initiating an engine shutdown. The generator will
automatically restart and the LED will reset once the
temperature has returned to a safe operating level.
Figure 3.3 – Low Oil Pressure and
High Temperature Switches
Oil Filter
Oil
Drain
Hose
Low Oil Switch
High Temp Switch
L
o
o
s
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Section 3 — Operation
15 kW Generator
15
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