12 Generac
®
Power Systems, Inc.
Section 3 — Operation
Air-cooled 7 kW Generator
2.7.2
ADDITIONAL CORROSION
PROTECTION
Periodically spray all engine linkage parts and brack-
ets with corrosion inhibiting spray such as WD-40 or
a comparable product.
2.8
VOLTAGE REGULATOR
ADJUSTMENT
With the frequency between 61-62 Hertz, slowly turn
the slotted potentiometer (Figure 2.4) until line volt-
age reads 244-252 volts.
Figure 2.4 – Voltage Adjustment Potentiometer
NOTE:
The access panel on top of the control panel must
be removed to adjust the voltage regulator.
NOTE:
The voltage regulator is housed above the genera-
tor's control panel. The regulator maintains a volt-
age in direct proportion to frequency at a 2-to-1
ratio. For example, at 62 Hertz, line-to-neutral
voltage will be 124 volts.
3.1
BREAK-IN PROCEDURE
Once the unit has been installed and all electrical
checks have been made, it is strongly recommended
that the following “Break-in Procedure” be completed
to ensure correct generator operation in the future.
1. Set the generator’s AUTO/OFF/MANUAL switch to
AUTO.
2. Turn OFF the utility power supply to the transfer
switch using the means provided (such as a utili-
ty main line circuit breaker).
3. The unit will start, and the transfer switch will
transfer to standby.
4. Using the transfer switch’s built-in emergency
load center, turn on circuits to load the generator
to approximately 25% load and run the unit for
one hour.
5. Run the unit for one hour at 50 percent load.
6. Run the unit for one hour at 75 percent load.
7. Run the unit for one hour at 100 percent load.
8. Turn ON the utility power supply to the transfer
switch, which will allow the transfer switch to
transfer back to utility power. The unit will con-
tinue to run for one minute and then shut down.
9. Allow the unit to cool.
10. Set the generator's AUTO/OFF/MANUAL switch to
OFF. Remove the 5A and 15A fuses from the gen-
erator control panel. Disconnect the battery
cables as outlined in “General Hazards” (page 2).
11. Drain the oil and remove the oil filter. Replace the
oil filter according to Section 4.4, “Changing the
Oil Filter”. Replace the oil with synthetic oil as
recommended in Section 4.3, “Changing the
Engine Oil”.
12. Reconnect the battery cables as outlined in
“General Hazards” (page 2) and insert the 5A and
15A fuses into the generator control panel. The
generator is now ready for service.
3.2
USING THE AUTO/OFF/MANUAL
SWITCH (FIGURE 3.1)
3.2.1 “AUTO” POSITION
Selecting this switch position activates fully automatic
system operation. It also allows for starting and exercis-
ing of the engine every seven days by setting the exercise
timer (see Section 3.6). This position also is used for
remote starting, when it is set up.
Figure 3.1 – Generator Control Panel
3.2.2 “OFF” POSITION
This switch position shuts down the engine. This
position also prevents automatic operation.
HIGH TEMP.
OVER SPEED
LOW OIL
SYSTEM SET
OVER CRANK
MAN.
SET
OFF
AUTO
15A
FUSE
EXERCISE
TIME
R
POWER SYSTEMS, INC.
L o c a t e y o u r
n e a r e s t
d e a le r
a t :
R
FUSE
5A
E X E R C IS E R
N O T
S E T
N O
U T IL IT Y
S E N S E
4
F L A S H IN G R E D
L E D S =
F L A S H IN G G R E E N
L E D =
◆