A) PRE-CHARGE INSTALLATION
1) Inspect the system and determine if the system is operating correctly. Any repairs should be carried out prior to
recharging the A/C system.
2) Check the system for refrigerant leaks using appropriate leak detection procedures and tools (stock # 606).
3) Leaks in metal lines, condensers, evaporators, fittings, and rubber hoses can be repaired effectively by installing RED
TEKâ ProSealÔ Advanced Seal Treatment (stock# 452).
4) Use a duct thermometer (stock# 605) to capture and record the center vent temperature. This will supply the installer a
temperature reference, allowing the installer to compare before and after temperature readings.
5) Determine the type of refrigerant currently in the a/c system. The OEM tag indicates the type and amount of refrigerant
in the system. If missing, contact the OEM for further information. This must be determined before initiating a RED
TEKâ 22a recharge.
6) Evacuation of the refrigerant in the system is recommended prior to installing RED TEKâ 22a refrigerant. Recover all
existing refrigerants into a suitable approved container and mark appropriately, as FEDERAL REGULATIONS
PROHIBIT THE VENTING OF REFRIGERANTS INTO THE ATMOSPHERE. Although RED TEKâ 22a is
compatible with most existing refrigerants and oils, DO NOT MIX REFRIGERANTS. Mixing refrigerants is illegal in
Canada and the US and will not offer the maximum performance available from RED TEKâ 22a.
7) Locate low and high side service ports of the A/C system.
8) Determine the correct amount of RED TEKâ 22a Refrigerant required in the system with the use of the OEM refrigerant
information and the RED TEKâ 22a Conversion Chart.
9) RED TEKâ 22a Refrigerant is installed through the low side service port as a liquid. PULL A SYSTEM VACUUM AS
PER MANUFACTURER’S SPECIFICATIONS.
B) CYLINDER CHARGING PROCEDURE
Follow all RED TEKâ 22a safety precautions before initiating charging process.
1) Properly connect Manifold Gauge Set (stock# 601) to RED TEKâ 22a cylinder.
2) Locate Low Side Service Port and connect low side hose.
3) Locate High Side Service Port and connect high side hose.
4) Place refrigerant cylinder on electronic charging scale (stock# 607) and set weight to 0.
5) Slowly open liquid charging valve allowing refrigerant to enter system slowly.
6) Continue with charging process as determined by the RED TEKâ 22a conversion chart and adequate cooling is attained.
DO NOT OVERCHARGE!
7) After RED TEKâ 22a charging procedure is completed, turn cylinder valve clockwise until valve is fully closed.
8) Remove charging hoses from low and high side service ports. Store unused RED TEKâ 22a refrigerant in a well ventilated
place away from open flames.
9) Apply RED TEKâ refrigerant identification tags in a highly visible area near charging port.