21
OPERATOR’S GUIDE
BEFORE STARTING
Perform the applicable pre-operational service checks
presented in this section before starting the system,
after installation, or after major repairs or fluid and
filter changes. Anytime the hydraulic system has
been opened for repairs the fill and bleed sequence
must
be followed.
FILL AND BLEED SEQUENCE
CAUTION!
CONTAMINATED
OIL
CAN
SEVERELY
DAMAGE A HYDRAULIC SYSTEM.
Always use filtered hydraulic fluid (ISO 4406 or
better) when filling the reservoir. Contaminated fluid
can cause improper system operation and result in
excessive wear of system components. Do not
transfer fluid from its shipping container into the
generator reservoir. Transfer oil from the shipping
container through a filter cart with a minimum of a
10 micron filter. If a filter cart is not available use a
filter cloth in a clean funnel. Check the fluid level of
the reservoir and do not attempt to operate with a
partially filled system.
Figure 16: Example of Hydraulic Fluid Reservoir
1.
Ensure all loads have been disconnected and the
main line circuit breaker is in the OFF position.
2.
Transfer the filtered oil into the reservoir using a
clean funnel. Fill the reservoir to the full mark
on the sight glass.
Do not overfill!
3.
Fill the pump case with filtered oil.
4.
Loosen the hydraulic hose connections at the
pump inlet, pump case drain, and pressure hose.
One turn should be enough.
5.
If there is no free-flow of oil at the pump,
pressurize the reservoir (maximum pressure 5
psi) to force oil throughout the system until there
is oil at all three hose connection points on the
pump end.
6.
Re-tighten all hose-connections and wipe dry.
Refill the reservoir with filtered oil to the full
line. Cap the reservoir.
7.
Turn the generator ON, engage the PTO (if
equipped) and turn over the engine for a few
seconds, if possible, without starting it.
8.
Check oil level and fill accordingly.
9.
Repeat steps 7 and 8 until the oil levels stabilize.
10.
Start the engine and let the engine warm up until
normal idle speed is obtained. Listen for pump
noise. If a grinding noise (pump cavitations) is
detected, shut the generator down and repeat
steps 7 and 8.
CAUTION!
SUSTAINED CAVITATIONS WILL DESTROY THE
PUMP. PURGE ALL AIR BEFORE CONTINUING.
11.
Continue running the engine at a low idle, check
the total hydraulic system for leaks. If a leak is
found, tighten the fitting and wipe dry. Do not
over torque the flare fittings. Consult your fitting
and hose supplier for the correct torque values. If