22
a leak persists, turn off the system and check the
condition of the mating flare. If the flare is
deformed or damaged, replace it and begin the
bleeding process from the beginning.
12.
Increase engine speed to the operating rpm. Let
the system run without load for 10 to 15 minutes
to allow trapped air to escape. Top-off the
reservoir to the full mark with filtered oil.
13.
Check the generator output and verify correct
voltage and frequency readings. If readings are
incorrect refer to the Frequency Adjustment
section.
14.
If the frequency or voltage is unstable, the system
may still have a small amount of air trapped
inside. Lower the engine speed to idle, and let
the system run for another 10 to 15 minutes
without load. Increase the engine to operating
rpm and verify the voltage and frequency
readings. Repeat this step as necessary in order
to obtain stability in the system.
15.
If frequency has stabilized at 61.5 Hz, run a final
test for leaks with engine running at operating
rpm and full load on the generator system. If
frequency has not stabilized, refer to the section
on Frequency Adjustment.
FREQUENCY ADJUSTMENT
The frequency (Hertz) is an indication of the
hydraulic pump flow.
1.
Turn OFF the main line circuit breaker and
remove any loads on the generator.
2.
Start the vehicle’s engine.
3.
Engage the PTO.
4.
Set the vehicle’s engine rpm at high idle and let
the hydraulic oil temperature warm up to a
minimum of 100°F.
5.
Turn the generator ON and check the frequency
on the display module. If frequency is not set at
61.5 Hz, proceed to the next step.
CAUTION!
BEFORE PROCEEDING, TURN OFF THE LOAD
ON THE GENERATOR SYSTEM AND VERIFY
THAT THE PUMP IS WITHIN THE RPM
OPERATING PARAMETERS.
Figure 17: Kawasaki Pump Control
6.
At the Pump Control, remove the frequency
adjustment cap and loosen the jam nut with a
wrench.
7.
While holding the jam nut with the wrench (to
keep it from turning), use an Allen wrench and
turn the adjustment screw. Turn the adjusting
screw
clockwise to increase
the frequency and
counterclockwise to decrease
the frequency.
8.
When the frequency
has been adjusted
satisfactorily, hold the adjusting screw and
tighten the jam nut securely and replace the cap.
9.
Re-apply the load to the generator and verify that
the frequency remains within the parameters.
If frequency is not stable or falls more than 3
hertz, air or contamination may be trapped in the
pump spool valve. To flush the compensator,
remove the spool valve. Run the system for 2 to
3 minutes. Re-install the spool and re-check the
frequency.