The efficient operation and life of the air conditioning
(A/C) system depends on the chemical stability of the refrigeration system.
Contamination with dirt, air, or moisture leads to chemical instability and
results in the following conditions:
| • | Unstable pressure-temperature relationships |
| • | Premature component wear |
| • | Premature component failure |
Observe the following general practices in order to ensure the chemical
stability of the system:
| • | Before breaking a refrigerant connection, wipe away any dirt or
oil. This will reduce the risk of contamination. Immediately cap, plug, or
tape both sides of the connection. |
| • | Keep all tools clean and dry including the manifold gauge set
and any replacement parts. |
| • | When adding polyalkaline glycol (PAG) refrigerant oil, ensure
that the transfer device and the container are clean and dry. Refrigerant
oil must be as moisture-free as possible. |
| • | Set up all of the necessary tools, cleaners, etc., before opening
the A/C system. Do not leave the A/C system open any longer than is absolutely
necessary. |
| • | Evacuate the A/C system after opening and before recharging the
system. |
