CJ Series installation directions

Next: Installing the Evaporator unit

The Nostalgic Air Parts team would like to thank you for your recent purchase of a complete a/c kit for your car or truck. There are a few steps that must be followed in order for your a/c system to operate properly.

1. The HIGH SIDE gauge reading should not exceed 200 PSI. We MUST have the HIGH SIDE gauge reading if you need any assistance in correcting a potential problem.
2. If you purchased the a/c compressor from NAP, DO NOT ADD ANY OIL, DYE, LEAK SEALANTS, OR OTHER ADDITIVES TO ANY PART OF THE SYSTEM. If oil is required NAP will provide an additional sheet with directions on filling the system with oil.
3. Be sure you have the correct pulleys for the engine prior to installing the kit. Pulleys are not included unless specified when the kit is ordered.
4. Insulation is very important. Be sure to insulate the firewall and floorboard prior to installing the evaporator unit. It is very important to insulate the floor and firewall behind the evaporator unit
5. There should be adequate airflow from the radiator fan, and a sufficient amount of room between the condenser and radiator. Make sure the CONDENSER HAS A TUNNEL EFFECT OF AIRFLOW THAT FLOWS THROUGH THE CONDENSER AND RADIATOR. Foam can be put in between condenser and the radiator edges to achieve a proper airflow effect. There should be ¼" to 1" gap in between the radiator and condenser. EFFECTS OF INADEQUATE AIRFLOW: the compressor may act like it is "locking up", warm air only from the vents, overheating of the engine, high head pressure, air blows cold at idle and blows warm while driving, and more.
6. Find the proper flow of the water prior to installing the heater control valve. Water should be turned off prior to entering the evaporator / heating unit. It should only be turned off when the heat is needed. If you are experiencing warm air out of the evaporator check the compressor low side fitting. If it is ice cold then the heater valve is not hooked up properly.
7. DO NOT USE THE SIGHT GLASS! The system should be charged with R-134a ONLY. If you do not follow this instruction your warranty may be void and you may not be eligible for technical assistance. EFFECTS OF OVERCHARGING: Compressor is "noisy", engine overheating, warm air only from the vents, and more.
8. If a problem exists after checking all these conditions you may call or email for technical assistance. IF YOU DO NOT HAVE THE HIGH SIDE GAUGE READING WE WILL NOT BE ABLE TO ASSIST YOU IN FIXING THE PROBLEM.

Next: Installing the Evaporator unit