User Manual

114614 (Rev. B, 6/03) © SPX Corporation
WARNING
When working with high pressure air sup-
plies and refrigerants, goggles should always
be worn to reduce the hazards of flying
particles and of contact with refrigerants.
The AIR-VAC is a Venturi-type vacuum pump
powered by compressed air and designed for mobile
air conditioning service.
OPERATING NOTES
A constant air source of 75 psi is required for pump
operation. The pump has an air consumption of 4.2
SCFM and will pull a vacuum up to 29.7 inches of
mercury at sea level.
Oil or water in the air line will not harm the pump;
it will be exhausted through the pump.
CONNECTING THE PUMP
1. Connect a constant (75 psi) air source to the “Air
Input” fitting located on the back of the pump.
This fitting is a standard
1
/
4
" N.P.T.F.
Note: Use a quick-disconnect fitting on the “Air
Input” fitting for fast, easy connections to the air
supply.
2. Connect the center hose of a manifold gauge set
which is connected to the A/C system to the
“Vacuum” tee fitting (appropriate for the type of
system — R-12 or R-134a) on the front of the
pump. Tightly cap the port not used. Open both
valves on the manifold.
3. Turn on the air supply to evacuate the system.
Follow the vehicle manufacturer’s specifications
for correct evacuation.
4. Turn off the air supply before disconnecting the
hose from the “Vacuum” fitting.
Model No. 34970
Operating Instructions
Because of ongoing product improvements, we reserve the right
to change design, specifications or materials without notice.
For R-12 and R-134a
SPX Corporation
655 Eisenhower Drive
Owatonna, MN 55060-0995 USA
Technical Services: 1-800-822-5561
Fax: [phone]
Customer Service: 1-800-533-6127
Fax: [phone]
Web Site: www.robinair. com