The life and and efficient operation of the air conditioning
system depends upon the chemical stablility of the refrigerant system. Refrigerant-134a
ansd Polyalkaline Glycol (PAG) refrigerant oil's stability changes when
the following materials contaminate the refrigeration system:
The foreign materials will cause the following to occur:
| • | Affect the pressure-temperature relationship |
| • | Cause internal corrosion |
| • | Abnormal wear of moving parts |
The following general practices should be followed in order to ensure
chemical stability in the system:
| • | Wipe away any dirt or oil at or near the connection in order to
eliminate the possiblity of dirt entering the system when disconnecting a
hose. |
| | Perform the following at both sides of the connection in order to prevent
dirt or moisture entering the hose connection |
| • | Cap both sides of the connection |
| • | Plug both sides of the connection |
| • | Tape both sides of the connection |
| • | Keep the manifold gauge set clean and dry. Keep the replacement
parts clean and dry. |
| • | Ensure that the container/ transfer tube through which the oil
flows is exceptionally clean and dry. |
| • | Ensure the refrigerant oil is free of moisture. |
| • | Have everything needed ready when opening the air conditioning
system. Do NOT leave the air conditioning system open any longer than necessary. |
| • | Properly evacuate the open air conditioning system before recharging
the air conditioning system. |
