Koso REXA Electraulic Xpac, Installation And Operation Manual

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REXA
Electraulic Actuators & Drives
Xpac
Installation Manual -- Version 5.1 (5/08)
11
3 OIL
The Xpac is a sealed, self-contained Electraulic actuator. During
normal operation, the hydraulic oil is pumped from one side of a
double acting cylinder to the other. An oil reservoir which provides
a source of “make-up” oil is an integral component. Any external
signs of a major oil leak may be indicative of damage to the
Xpac
and should be investigated.
The oil reservoir is sealed and spring loaded. Oil degradation from
moisture or other external contaminates should not occur. Reservoir
operation is unaffected by actuator orientation.
3.1 Level Check
There is a visual indicator on the side of the reservoir housing to
show the oil level. The indicator is a red-colored rod which should be
exposed between ¼
to ½ inches. The normal fill position is shown by
a scribe mark around the rod. If the indicator protrudes less than ¼
inch beyond the housing, then the actuator should be filled with oil.
3.2 Filling
The underside of the Electraulic power module is provided with a
standard pneumatic style Schrader fitting. The mating half can be
obtained at any auto parts dealer. To fill the
Xpac with oil, use a
lever operated grease gun. Install the fitting on the grease gun. Fill
the grease gun with clean Castrol Syntec SAE 5W-50 motor oil. An
unusual application may require a different oil (refer to the actuator
serial plate).
Pump the grease gun a few times to purge any air and hold the fitting
on the oil fill valve of the
Xpac . Pump oil into the reservoir. While
pumping, observe the oil indicator. When the scribe marker or ½
inch is exposed, the reservoir is filled. A 10 micron filter screens the
oil before it enters the reservoir.
The actuator does not have to be taken
out of service when filling with oil.
All air must be purged from the grease
gun before attempting to add oil.