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5. PUMP SHUT DOWN
1.
Close the manifold valve between the pump and the system.
2.
Close the isolation valve and dismantle the connection between the system and the pump.
3.
Turn the power switch to OFF ( O ), then open the isolation valve to break the vacuum inside
the pump.
4.
Immediately cap the inlet port to prevent any contamination or particles from entering
the port.
6. MAINTENANCE
It is recommended to change the vacuum pump oil after you have finished the evacuation of a
system. The oil used in the vacuum pump has a great importance for the final vacuum level that
can be reached. Always use oils specially recommended for this application (low vapor pressure).
The oil provided with the pump has been specially blended to maintain maximum viscosity at
normal running temperatures and to improve cold weather starts.
OIL CHANGE PROCEDURE
Be sure the pump is warm ( Let the pump run for a few minutes )
1.
Remove the oil drain cap and drain contaminated oil into a suitable container
2.
If it is necessary, tilt the pump forward to drain residual oil.
3.
Replace the oil drain cap, and remove the oil fill cap at the top.
4.
Fill the reservoir with new vacuum oil until the oil is visible at the bottom of the sight glass.
5.
With the isolation valve closed, allow the pump to run for one minute, then check oil level.
6.
If it is low, refill up to the middle of the oil sight glass.
Replace the oil fill cap making sure the drain cap is tight
7.
If the oil is badly contaminated you should first drain the oil from the reservoir,
NOTE:
and then remove the oil reservoir, clean properly and replace.
Operating Manual for GVP Vacuum Pump Series
05
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