The life and efficient operation of the air conditioning
system depends upon the chemical stability of the refrigerant system. The
stability of Refrigerant-134a and Polyalkaline Glycol (PAG) refrigerant
oil changes when the following materials contaminate the refrigeration
system:
The foreign materials will cause the following to occur:
| • | The affect of the pressure-temperature relationship |
| • | Cause internal corrosion |
| • | Abnormal wear of moving parts |
Follow the following general practices 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 possibility of dirt entering the system when disconnecting a
hose. |
| | All air contains moisture. Air that enters any part of the refrigeration
system will carry moisture into the refrigeration system. The exposed surfaces
will quickly collect the moisture. |
| | Perform the following steps in order to prevent dirt or moisture from
entering the hose connection: |
| - | Cap both sides of the connection |
| - | Plug both sides of the connection |
| - | Tape both sides of the connection |
| • | Keep the tools clean and dry, including the manifold gauge set.
Keep the replacement parts clean and dry. |
| • | Ensure that the container/ transfer tube through which the oil
flows is exceptionally clean and dry when adding PAG refrigerant oil. |
| • | Ensure the refrigerant oil is free of moisture. |
| • | Have everything needed ready prior to opening the air conditioning
system. Do not leave the air conditioning system open any longer than necessary. |
| • | Properly evacuate the air conditioning system before recharging
the air conditioning system anytime the air conditioning system is open. |
