Oil Reservoir Mounting:
The oil pump must be connected to an oil reservoir tank. The oil reservoir tank must be mounted
higher than the oil feed connection on the oil pump so that the oil will be fed by gravity.
Prior to Start-Up:
Before running the pump for the first time (and any time after pump teardown or if it has been out of
service for some time) follow the below procedure:
To bleed the oil pump loosen but do not remove the bleed screw on the oil pump.
Ensure there is adequate pump oil in the oil reservoir and bleed the oil feed line from the oil
reservoir to the oil pump.
When oil starts to drip from the bleed screw on the oil pump, retighten it.
Pour 1 - 2 oz. of pump oil into the vacuum pump inlet and rotate the pump by hand several times
to coat the cylinder with a fresh film of oil.
After start-up, observe the transparent oil lines coming from the oil pump to confirm that oil is
flowing from the oil pump to the cylinder ports.
H Series:
All Masport H Series pumps require an adjustable pressure/vacuum actuated system. This system
utilizes two adjustable oil sight feed valves that can be mounted directly at the bearing (for flange
vacuum only models) or remote mounted (integral pressure/vacuum valve models).
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