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8.
Vacuum System
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C This is an oilless vacuum pump; it should never be lubricated. The
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W Wear eye protection and flush the pump in a well-ventilated area.
94MS41 Rev. C1 S/W Ver 2.06
Vacuum Pumps
Description:
The printer uses two 1/4-hp oilless rotary vane vacuum pumps, one for
each exposure frame. Pressing the G button on the front nose assembly
activates the pump for frame that is out of the cabinet. The vacuum gauge
on the front panel indicates which pump is activated.
Pump Construction:
pump end plate, body, rotor, and mounting bracket are cast
iron. Consequently, any moisture that accumulates in the
pump will corrode the interior, especially if it stands idle.
The muffler box on the front of the unit is made of aluminum.
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The vanes are hard carbon and are precision ground. They should last
many thousands of hours, depending upon the degree of vacuum or
pressure at which the pump is run. The carbon vanes and grease-packed
motor bearings require no oil.
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Filtration: Be certain that dirt, chips, and other foreign material, often
found in new plumbing, is not allowed to enter the pump. Liquid, moisture
vapor, or oil-based contaminants will affect pump performance and must
be prevented from entering the pump. Dirty filters restrict air flow and, if
not corrected, could lead to motor overload, poor performance, and early
pump failure. Check the filters semi annually or when necessary. The
filters can be dried with compressed air. Filters should be cleaned or
replaced every 1500 to 3000 hours, depending on the application.
Flushing the Pump
Do not use kerosene or other combustible solvents to flush
the pump. Use Gast AH 255 flushing solvent or its equivalent.
If excessive dirt, foreign particles, moisture, or oil enter the
pump, the vanes will act sluggish or may even break. Flushing
the pump should remove these materials. There are two
options for flushing the pump.
8-1
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