INSTALLATION AND OPERATING MANUAL
This manual covers all models of the VCX rotary claw vacuum pump. The model number is printed on the
nameplate with the unit’s serial number.
Please identify the model number and serial number when ordering parts.
1.0 INSTALLATION
1.1 General description
VCX pumps are dry, contactless machines enclosed in a fan-cooled, ventilated acoustic sound shield.
The modular construction consists of two compartments separated by labyrinth seals: a pumping
chamber and a gear chamber. In the pump chamber, two rotary claws rotate in opposite directions. The
gear chamber contains gears for synchronization of the claw rotation. An anti-suck back valve can be
installed in the inlet flange to prevent air from flowing back into the vacuum chamber after the pump is
shut down. The pump is directly driven by a flanged motor via a coupling.
1.2 Unpacking
Inspect the box and pump carefully for any signs of damage incurred in transit. Since all pumps are
ordinarily shipped F. O. B. from Airtech’s factory, such damage is the responsibility of the carrier and
should be reported to them.
The vacuum pump is bolted to the skid with studs that are connected through the rubber feet of the pump.
Remove the nuts from the underside of the crate and remove the unit from the skid. Unscrew the studs
from the rubber feet.
The inlet and exhaust of the vacuum pump are covered with plastic caps to prevent dirt and other foreign
substances from entering the unit. Leave these caps in place until you are ready to pipe the unit to your
equipment.
1.3 Location
Install the compressor in a horizontal position on a level surface in a well-ventilated area. Leave 8”-10” of
access around the pump to allow proper cooling. Allow access to the oil sight glass in order to inspect the
oil level regularly, and the oil fill and oil drain port for easy service.
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