THE REFRIGERANT SYSTEM
This task covers:
Tool kit, refrigeration SVC
G e n e r a l Safty Instructions
Voltages used can kill. Always disconnect power
New filter-drier installed
cord to air conditioner before performing any
internal maintenance. Shutting unit off at its control
panel does not disconnect unit power.
Don't evacuate a leaking system. The vacuum created can cause air, moisture, and dirt to enter system.
Check that both charging manifold valves are closed.
Attach hose assemblies to service valves and charging manifold valves.
Attach center hose assembly to vacuum pump.
Start vacuum pump.
Open charging manifold valves.
Run the vacuum pump until at least 29 inches of mercury, measured on the gage, is reached.
Inability to reach 29 inches of mercury may indicate either a leak or a problem with the pump.