Operation - Napa 78-1900 Operating Manual

VACUUM PUMPS
Operating Manual
1. Black Oil Filler Cap/Exhaust Plug
2. Inlet Tee Fitting
3. Inlet Cap
4. Sight Glass
5. Handle
Use separate manifolds and hoses for R-134a systems. Cross-contamination with other refrigerant types
will cause severe damage to AC systems and to service tools and equipment. Do not mix refrigerant types
through a system or in the same container!
For use on AC systems using CFCs, HCFCs, and HFCs in conjunction with mineral oil, ester oil, alkylbenzene oil,
and PAG oil as lubricants. Not for use with ammonia or lithium bromide systems. Not for use with flammable
refrigerants.

OperatiOn:

Wear safety goggles when working with refrigerants. Contact with refrigerant can cause eye injury.
Wear gloves when working with refrigerants and AC systems. Contact with refrigerant can burn and or cause
serious injury to skin.
initiaL set-up:
1. Place pump in horizontal position on solid, level surface.
2. Remove the "BLACK OIL FILLER CAP / EXHAUST PLUG"
3. Fill the pump reservoir to the mid-point of the Sight Glass located on the front of the pump. Use the oil
packaged with the vacuum pump or fresh high quality vacuum pump oil. do not SuBStitue any otheR oil—
uSe only Vacuum PumP oil.
4. Install the "BLACK OIL FILLER CAP / EXHAUST PLUG". Note that the plug is vented to allow exhaust flow.
caution:
Do not attempt to operate the pump with the exhaust port plugged. Doing so could result in
permanent damage to the pump or could cause the plug to be blown from the pump reservoir.
Vacuum Pumps
2
1
4

5
½" Acme Inlet (R-134a)
3
¼" MFL Inlet
(R-12, R-22,
R-500, R-502)
Rev. 11/03/06