Engine Governor Adjustment; Voltage Regulator Adjustment - Generac Power Systems Guardian 005240 Installation And Owner's Manual

Post Installation Start-up and Adjustments
Do not make any unnecessary adjustments.
Factory settings are correct for most appli-
cations. However, when making adjustments,
be careful to avoid overspeeding the engine.
If this procedure or the test equipment is not available, locate the
nearest Dealer and they can perform the adjustments.
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
The engine must be OFF to perform steps 1
and 2.
1. Loosen the governor clamp bolt (Figure 2.4).
2. Hold the governor lever at its wide open throttle position
(clockwise), 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).
Figure 2.4 — Engine Governor Adjustment Single
Cylinder Engines
GOVERNOR
SHAFT
GOVERNOR
CLAMP
BOLT
14
NOTE:
SECONDARY
ADJUST SCREW
PRIMARY
ADJUST
SCREW
3. Start the generator; let it stabilize and warm up at no-load.
4. Connect a frequency meter across the generators AC output
leads.
5. Turn the primary adjust screw to obtain a frequency reading
of 61.5 Hertz. Turn the secondary adjust screw to obtain a
frequency of 62.5 Hz.
6. When frequency is correct at no load, check the AC voltage
reading. If voltage is incorrect, the voltage regulator may
require adjustment (See the Voltage Regulator Adjustment
section).
2.7.2 13 KW AND 16 KW UNITS
All V-twin units DO NOT require an engine governor adjustment
due to their design.
2.7.3 ADDITIONAL CORROSION
PROTECTION
Periodically spray all engine linkage parts and brackets with corro-
sion inhibiting spray such as WD-40 or a comparable product.
2.8 VOLTAGE REGULATOR
ADJUSTMENT
Unit 120 Volts
7 kW 50.0 amps
2.8.1 7KW UNITS
With the frequency between 62-63 Hertz at no-load, slowly turn
the slotted potentiometer (Figure 2.5) until line voltage reads 248-
252 volts.
2.8.2 10, 13, AND 16KW UNITS
With the frequency between 58-59 Hertz at no-load, slowly turn
the slotted potentiometer (Figure 2.3) until line voltage reads 247-
249 volts.
The access panel on top of the control panel must be removed
to adjust the voltage regulator.
The voltage regulator is housed above the generator's control
panel. The regulator maintains a voltage in direct proportion to
frequency at a 2-to-1 ratio. For example, at 62 Hertz, line-to-
neutral voltage will be 124 volts.
NOTE:
240 Volts
25.0 amps
NOTE:
NOTE: