Automotive air conditioning systems end belts to rotate the compressor's pulley.
An automotive air conditioning course must enjoy its refrigerant charged after replacing a leaking Element or when the refrigerant strength levels fall below operating levels. As refrigerant does not evaporate or wear elsewhere, low refrigerant levels present the air conditioning system leaks. Older vehicles, those manufactured prior to 1995, call R-12 as the refrigerant; Newer vehicles cause R-134a. Peerless certified technicians can legally shop for or drudge on automobiles using R-12. Most R-134a charging kits, available at auto-parts stores, comprehend a can of refrigerant, a charging hose with a strength gauge and the belonging hose connexion Trimmings.
Instructions
1. Peep the automotive air-conditioning system's identification tag, located on the compressor. The compressor mounts to a bracket on the front of the engine and the drive-belt wraps over the compressor's pulley. Two hoses Way out the back of the compressor. The identification tag states the refrigerant type, the immensity used and the operating pressures.
2. Commencement the vehicle's engine and turn the air conditioning operation on.4. Ensue the broad refrigerant hose -- the vapour refrigerant hose -- from the compressor to the advantage valve's becoming and remove the servicing valve's cap. Servicing valves gun enjoy a nipple sticking absent of the top of the hose and favor a action to access the refrigerant inside of the course.
Attach a refrigerant charging implements's charging hose to the instruments's refrigerant can. The deadline of the hose with the gauge near it connects to the refrigerant can. The hose screws onto the can's Harbour.
Appropriate the "Flying" fan quickness. Let the engine bound for five minutes before continuing.3. Vapour refrigerant overhaul valves capitalization 13 mm quick-connect Trimmings for R-134a systems and 7/16-inch threaded Trimmings on R-12 systems.
5. Connect the charging hose to the utility fitting. Quick-connect fittings snap into place and threaded fittings screw on. The different connection styles prevents refrigerant type cross-contamination.
6. Loosen the hose-to-refrigerant can fitting. Allow a small amount of refrigerant to purge from the automobile's refrigerant hose -- about 2-seconds worth. Tighten the fitting. Purging removes moisture and air from the charging hose.
7. Turn the can so its valve faces upward. This keeps the liquid refrigerant on the bottom of the can, away from the valve. Never allow liquid refrigerant to enter the air-conditioning system through the vapor refrigerant hose.
8. Open the refrigerant can's valve for 30 seconds, then close the valve. Check the gauge. If the gauge reads below the optimal pressure, open the can's valve for 30 seconds. Recheck the gauge. Continue to add refrigerant, in 30-second bursts, until the refrigerant has reached its desired pressure according to the gauge. The charging hose's gauge uses a color-coded set of pressure readings that indicates low pressure, optimal pressure and high pressure.
9. Disconnect the charging hose from the service valve. Install the service valve's cap.
