Engine Governor Adjustment; Voltage Regulator Adjustment - Generac Guardian Serie Manuel Du Propriétaire

8. Turn OFF the utility power supply to the transfer switch.
With the AUTO/OFF/MANUAL switch at AUTO, the engine should
crank and start when the utility source power is turned OFF after
a 10 second delay. After starting, the transfer switch should
connect load circuits to the standby side after a five (5) second
delay. Let the system go through its entire automatic sequence of
operation.
With the generator running and loads powered by generator AC
output, turn ON the utility power supply to the transfer switch. The
following should occur:
• After about 15 seconds, the switch should transfer loads back
to the utility power source.
• About one minute after re-transfer, the engine should shut
down.
2.6

ENGINE GOVERNOR ADJUSTMENT

If both AC frequency and voltage are correspondingly high or low,
adjust the engine governor as follows:
2.6.1 8 KW UNITS
 The engine must be OFF to perform steps 1 and
2.
1. Loosen the governor clamp bolt (Figure 2.1).
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).
3. Start the generator; let it stabilize and warm up at no-load.
4. Connect a frequency meter across the generators AC output
leads.
Figure 2.1 — Engine Governor Adjustment
Single Cylinder Engines
GOVERNOR
SHAFT
GOVERNOR
CLAMP
BOLT
16
Section 2 — Post Installation Start-up and Adjustments
Air-cooled Generators
SECONDARY
ADJUST SCREW
PRIMARY
ADJUST
SCREW
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.
2.6.2 12, 14, 16, 17 & 20KW UNITS
All V-twin units DO NOT require an engine governor adjustment
due to their design.
2.6.3 ADDITIONAL CORROSION
PROTECTION
Periodically spray all engine linkage parts and brackets with corro-
sion inhibiting spray such as WD-40 or a comparable product.
2.7 VOLTAGE REGULATOR
ADJUSTMENT
2.7.1 8 & 10KW UNITS
Due to the brushless design of these two alternators, no voltage
regulator is used and therefore no voltage adjustment is required.
2.7.2 12, 14, 16, 17 & 20KW UNITS
With the frequency between 59.5 -60.5 Hertz at no-load, slowly
turn the slotted potentiometer (Figure 2.2) until line voltage reads
247-249 volts.
Figure 2.2 – Voltage Adjustment Potentiometer
The access panel on top of the control panel must be removed
to adjust the voltage regulator.
The voltage regulator is housed behind the generator's control
panel. The regulator maintains a voltage in direct proportion to
frequency at a 2-to-1 ratio. For example, at 60 Hertz, line-to-
neutral voltage will be 124 volts.
NOTE:
Turn to
adjust voltage.
NOTE:
NOTE: