Owner's manual

© 2000 Robinair, SPX Corporation
16
IMPORTANT!
You should
evacuate for at
least 15 minutes
to ensure
adequate moisture
and contaminant
removal.
Operating Instructions
EVACUATING THE A/C SYSTEM
WARNING
Always wear safety goggles when working with refrigerant. Use only
authorized refillable refrigerant tanks. Read and follow all warnings at the
beginning of this manual before operating the unit. In addition to the
number keys, the keypad contains special keys that accomplish specific
operating functions.
1. Connect the service hoses to the vehicle. R-134a users: Open the coupler
valves.
2. Place both High and Low Side manifold valves in Recover/Vacuum.
3. Turn the unit on and press VACUUM.
4. If the vacuum pump has been run more than 10 hours since the last oil change,
the display reads: VACUUM OIL TIME= X hr. Xmin. Xsec. Press STOP to
change the vacuum pump oil or press START to continue. Instructions for
changing the vacuum pump oil are located in the maintenance section of this
manual.
NOTE: Vacuum Pump oil should be changed after 10 hours of use to maintain
maximum performance and endurance levels.
5. If the system being evacuated contains a pressure over 25 psi at any point
during the evacuation, the display reads HIGH SYSTEM PRESSURE . This
message indicates that the A/C system contains refrigerant. Press RECOVER
to continue. After recovery is complete, return to Step 1 to evacuate the A/C
system.
6. If the pressure is below 25 psi, the user is prompted to press START to
VACUUM or press CHARGE to use the VACUUM-CHARGE (VAC-CHG)
feature. If VACUUM is selected, the unit vacuums the system only and user
interaction is required to enter the CHARGE mode. If the VACUUM-
CHARGE feature is chosen, the unit automatically charges the system after
evacuation is complete.
IMPORTANT!
If the vacuum
pump has run for
10 or more hours
without an oil
change, the
message
VACUUM OIL
TIME = Xhr. Xmin
Xsec appears on
the display.
Change the
pump oil
following the
procedures in the
MAINTENANCE
INSTRUCTIONS.
Vacuum
INST 0726
The Control Panel During Evacuation
Valves Open