Generac
®
Power Systems, Inc.
11
3. Turn on appliances, lights, pumps, etc., that are
on the emergency circuits in an attempt to fully
load the generator. Be cautious not to overload
the generator. Use the following chart as a guide:
4. When full load has been achieved. Connect a fre-
quency meter to the output lugs of the generator’s
main line circuit breaker.
5. The fuel regulator is fitted with one adjustment
screw. While watching the frequency meter, slow-
ly turn the adjustment screw clockwise or coun-
terclockwise. (Figures 2.1 and 2.2).
6. When the highest frequency is reached maximum
power has been set.
7. Turn utility power to the main distribution panel
back on. This can be done by switching the serv-
ice main breaker to the on or closed position.
Allow the generator to shut down.
Figure 2.1 — Dual Fuel Regulators
Figure 2.2 — Placement of Regulator
Do not make any unnecessary adjustments.
Factory settings are correct for most applica-
tions. However, when making adjustments, be
careful to avoid overspeeding the engine.
If this procedure or equipment are not available,
locate the nearest Generac Dealer and they can per-
form the adjustments.
NOTE:
A service fee may be charged for this adjustment.
2.7
ENGINE GOVERNOR ADJUSTMENT
If both AC frequency and voltage are correspondingly
high or low, adjust the engine governor as follows:
2.7.1
7 KW UNITS
1. Loosen the governor clamp bolt (Figure 2.3).
2. Hold the governor lever at its wide open throttle
position, and rotate the governor shaft clockwise
as far as it will go. Then, tighten the governor
lever clamp bolt to 70 inch-pounds (8 N-m).
3. Start the generator; let it stabilize and warm up
at no-load.
4. Connect an AC frequency meter across the gener-
ators AC output leads.
5. Turn the speed adjust nut to obtain a frequency
reading of 62 Hz.
6. When frequency is correct at no load, check the
AC voltage reading. If voltage is incorrect, the volt-
age regulator may require adjustment.
Figure 2.3 — Engine Governor Adjustment
GOVERNOR
SHAFT
ADJUST
SCREW
GOVERNOR
CLAMP
BOLT
◆
!
Adjustment Screw
410
Adjustment
Screw
(One Side
Only)
win
Section 2 — Post Installation Start-up and Adjustments
Air-cooled 7 kW Generator
Unit
120 Volts
240 Volts
7 kW
50.0 amps
25.0 amps