Never open or loosen a connection before removing the
refrigerant from the system with a recycling machine such as the Rotunda A/C
Refrigerant Reclaim System (078-00800) or equivalent.
When loosening a connection, if any residual pressure is
evident, allow it to leak off before opening the fitting.
A system which has been opened to replace a component or one
which has discharged through leakage must be evacuated before charging.
Immediately after disconnecting a component from the system,
seal the open fittings with a cap or plug.
Before disconnecting a component from the system, clean
outside of the fittings thoroughly.
Do not remove sealing caps from a replacement component
until ready to install.
Refrigerant oil will absorb moisture from the atmosphere if
left uncapped. Do not open an oil container until ready to use and install cap
immediately after using. Store oil only in a clean, moisture-free
container.
Before connecting an open fitting, always install a new
O-ring seal. Coat fitting and O-ring with refrigerant oil before
connecting.
When installing a refrigerant line, avoid sharp bends.
Position line away from exhaust or any sharp edges which may chafe the
line.
Tighten fittings only to specified torque.
When disconnecting a fitting, use a wrench on both halves of
the fitting to prevent twisting of refrigerant lines or tubes.
Do not open a refrigerant system or uncap a replacement
component unless it is as close as possible to room temperature. This will
prevent condensation from forming inside a component which is cooler than
surrounding air.
Keep service tools and work area clean. Contamination of a
refrigerant system through careless work habits must be avoided.
Whenever components in the engine compartment or instrument panel
areas are being serviced, the battery ground cable must be disconnected to
eliminate the possibility of electrical shorts, burned-up wiring, and dangerous
fires. Extreme care must be exercised when performing electrical tests when the
battery must be connected to operate the system.