Tracker 4WD L4-2.0L VIN C (1999)
Refrigerant: Service Precautions
Maintaining Chemical Stability
The chemical stability of the refrigeration system plays an important role in the efficient operation and longevity of the A/C system.
When air, moisture or particulate contamination are introduced into the refrigeration system, the following results will occur:
^
The chemical stability of R-134a and polyalkylene glycol (PAG) synthetic lubricant will change.
^
The pressure/temperature symmetry will change.
^
The A/C system efficiency will be diminished.
^
Internal A/C system parts may corrode and/or wear in an abnormal manner.
Use the following general practices to maintain chemical stability in the refrigeration system:
^
Wipe away dirt and/or oil before you break a refrigerant connection. This will reduce the possibility of particulate contamination.
^
Cap, plug or tape both sides of an open connection as soon as possible. This will minimize the amount of dirt and moisture entering the system.
^
Ensure that the following remain clean and dry:
-
The tools being used for the repair
-
The surrounding area of the repair
-
The hoses and connectors for the ACR4 machine or manifold gage set
-
The replacement parts
^
When adding polyalkylene glycol (PAG) lubricant, ensure the transfer device and the container remain clean and dry to minimize moisture
intrusion.
^
Do not leave the A/C system open any longer than necessary.
^
Before recharging an A/C system that has been opened, properly evacuate and vacuum test the system.
^
Service parts are dehydrated and sealed prior to shipping. Retain the parts in their sealed packages until you are ready to use them.
^
Ensure the parts are at room temperature before opening the packages. This prevents condensation on the parts from humidity in the atmosphere.
^
Attach the A/C service equipment quick-connects as soon as possible after removing the service caps.