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901142 REV D 5/16/17, INST 63-66 CORVETTE EVAP wo AC PG 4 OF 25
Important Notice—Please Read
For Maximum System Performance, Vintage Air Recommends the Following:
New Vintage Air-supplied Sanden Compressor:
No additional oil needed (Compressor is shipped with
proper oil charge).
All Other Compressors:
Consult manufacturer (Some compressors are shipped dry and will need oil
added).
NOTE: Vintage Air systems are designed to operate with R134a refrigerant only.
Use of any other refrigerant could damage your A/C system and/or vehicle, and
possibly cause a fire, in addition to potentially voiding the warranties of the A/C
system and its components.
Refrigerant Capacities:
Vintage Air System:
1.8 lbs. (1 lb., 12 oz.) of
R134a
, charged by weight with a quality charging station or
scale.
NOTE: Use of the proper type and amount of refrigerant is critical to system operation and
performance.
Other Systems:
Consult manufacturer’s guidelines.
Lubricant Capacities:
Safety Switches
Service Info:
Protect Your Investment:
Prior to assembly, it is critical that the compressor, evaporator, A/C hoses and
fittings, hardlines, condenser and receiver/drier remained capped. Removing caps prior to assembly will
allow moisture, insects and debris into the components, possibly leading to reduced performance and/or
premature failure of your A/C system. This is especially important with the receiver/drier.
Additionally, when caps are removed for assembly,
BE CAREFUL!
Some components are shipped under
pressure with dry nitrogen.
Evacuate the System for 35-45 Minutes:
Ensure that system components (Drier, compressor, evaporator
and condenser) are at a temperature of at least 85° F. On a cool day, the components can be heated with a
heat gun
or
by running the engine with the heater on before evacuating. Leak check and charge to
specifications.
Your Vintage Air system is equipped with a binary pressure safety switch. A binary switch disengages the
compressor clutch in cases of extreme low pressure conditions (Refrigerant Loss) or excessively high head
pressure (406 PSI) to prevent compressor damage or hose rupture. A trinary switch combines Hi/Lo
pressure protection with an electric fan operation signal at 254 PSI, and should be substituted for use with
electric fans. Compressor safety switches are extremely important since an A/C system relies on refrigerant
to circulate lubricant.
Bolts Passing Through Cowl and/or Firewall:
To ensure a watertight seal between the passenger compartment and the vehicle exterior, for all bolts
passing through the cowl and/or firewall, Vintage Air recommends coating the threads with silicone prior to
installation.
Heater Hose (Not Included With This Kit):
Heater hose may be purchased from Vintage Air (Part# 31800-VUD) or your local parts retailer. Routing and
required length will vary based on installer preference.
