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2. To shut off pump after use
To prolong pump lifespan and smooth start-up, these procedures to shut off pump
should be followed.
(a) Turn off the manifold valve between the pump and the system.
(b) Remove the hose from the pump inlet.
(c) Cover the inlet port openings to prevent any contamination or foreign particles
from entering the port.
III. Maintenance
1. Vacuum pump oil:
The condition and type of oil used in any high performance vacuum pump are
extremely important in determining the ultimate attainable vacuum. It is recommended
to use the high Performance Vacuum Pump Oil, which is specifically blended to
maintain maximum viscosity at normal running temperatures and to improve cold
weather start up.
2. Oil change procedure
(a) Ensure the pump is warmed up.
(b) Remove the Oil Drain cap. Drain off contaminated oil into a container and dispose
it properly. Oil can be removed from the pump by opening the inlet and partially
blocking the exhaust with a cloth while the pump is running. Do not operate the pump
for more than 20 seconds using this method.
(c) When the drainage of oil completed, tilt the pump forward to remove the residual
oil.
(d) Place back the Oil Drain cap. Remove the Oil Fill cap and fill the oil reservoir with
new vacuum pump oil until the oil level is seen at the bottom of the sight glass.
(e) Ensure that the inlet ports are covered before turn on the pump. Allow it to run for
one minute to check the oil level. If the oil level is below the sight glass Oil Level line‚
fill oil slowly (with the pump running) until the oil reaches the Oil Level line. Place
back the Oil Fill cap, ensure the inlet is covered and the oil drain cap is closed tightly.
(f) i) lf the oil is badly contaminated with sludge that forms during operation, you may
need to remove the oil reservoir cover and wipe it.
ii) The alternative method to deal with heavily contaminated oil is to force the oil from
the pump reservoir. Leave the pump to run until it is warmed up.
While the pump is still running‚ remove the oil drain cap and restrict the exhaust
slightly. This will back-pressure the oil reservoir and purge the oil with contaminants.
Turn off the pump when oil stop flowing.
iii) Repeat this procedure as required until the contaminants is removed completely.
iv) Replace the Oil Drain cap and refill the oil reservoir to the proper oil level with
clean vacuum pump oil.
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