Automatic Oil Pump; Adjusting The Automatic Oil Pump - National Vacuum Equipment WPT 480/P Owner's Manual And Operating Instructions

Automatic oil pump

Adjusting the automatic oil pump

The automatic oil pump is a metered piston-type pump.
If you wish to adjust the pump, please follow these instruc-
tions:
16 | WPT Series
• Cooling system: normal operating temperature is
140°F - 175°F. Maximum temperature is 200°F.
• Coolant lines should be assembled as follows:
a. (Cool water) From coolant source to the
circulating pump to the fitting on the top of the
rear endplate back to coolant source.
b. After filling with coolant, run the circulating
pump and recheck the coolant level.
c. After running for several minutes, loosen the
thermometer slightly to allow any air trapped in
the pump to escape. Then retighten the
thermometer.
• A 2" pressure relief valve and a 1½" vacuum relief
valve have been shipped with your pump and need
to be mounted on the top of the pump.
• The automatic oil pumps are set at the factory
during pump testing and should require no further
adjustment during pump installation.
• The pumps are adjusted to one drop every two
seconds per outlet. This oil rate equals 2.7 fluid
oz. per hour.
Adjusting the oil rate
Oil flow is changed by adjusting the length of the stroke of
the piston.
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