CAUTION
Continuous operation one hour or more at high pressure (1kPa or more) would decrease the oil
volume that are discharged as the oil mist and cause parts wear rapidly or cause trouble such as
burning.
You are recommended to control the oil level on regularly supplying the pump oil. It is
recommended to install the oil recovery mechanism (0ption).
Continuous operation at high pressure; the oil temperature becomes very high. As a result, the oil
rapidly deteriorates, and the attained pressure and the exhaust speed go bad, and it causes the
rapid abrasion of the parts or burns.
Frequently perform replacement of the pump oil and shorten the maintenance cycle.
6.3 Change the pump oil
WARNING
Wear protective gear such as rubber gloves, protective goggles and the like.
There might be some hazardous substances in pump oil because of oil
decomposition or hazardous gas sucked in, confirm the nature of the hazard
and take necessary safety gear.
The oil level comes down approximately lcm after pump being started. Do
not operate the pump with the minimum oil level. Do not operate the pump
before filling pump oil, the pump will be damaged.
To ensure the pump function and the service life, the pump oil must clean
and keep in appropriate oil level.
Because of improper storage or use, there might be water or other volatile substances mixed in pump
oil and the ultimate pressure cannot attain. Close the air inlet, open the gas ballast port and run
pump continuously for 30 minutes to exhaust the gas. If the pump oil was deteriorated by mechanical
impurities or chemical contamination, replace the pump oil. You are recommended to fill the pump
with clean BS0 68 oil. To change the pump oil as follows.
Shut down the pump and open the oil drain port to drain the oil in the pump case. Up on completion
of draining the oil, close the drain port again and ran the pump under no load for approx. 5 seconds
to drain the oil from the cylinder.
Close the drain port and fill fresh oil through the oil filling port. Pour oil until the oil level comes
between the two level lines of the oil level gauge.
If the oil is severely contaminated, fill fresh oil and run the pump for several minutes under no load to
clean the pump interior. Repeat this operation several times depending on the degree of oil
contamination.
After changing the oil with fresh oil, run the pump to warm it up and then check the ultimate
pressure. If substances of low boiling point (water, organic solvent, etc.) are mixed with pump oil or
sludge collects on the bottom of the pump case, the ultimate pressure cannot recovered by one oil
change, the pump oil must be changed several times. If the specified ultimate pressure cannot be
