Robinair 178012K Recovery, Recycling, Recharging Unit - Manual (Page 16)

© 2000 Robinair, SPX Corporation
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Operating Instructions
A/C-R SYSTEM EVACUATION
WARNING!
Always wear safety goggles when working with refrigerant. Use only
authorized refillable refrigerant tanks. Disconnect hoses with extreme
caution!
All hoses may contain refrigerant under pressure. Read and follow all
warnings at the beginning of this manual before operating the unit.
1. Be sure the high and low side hoses are connected to the A/C-R system and that
the high and low side valves are open.
2. Press SHIFT/RESET to toggle the display to show “PROGRAM VACUUM
MINUTES 15.00.” Fifteen minutes is the default time for evacuation. To change
the time, press the appropriate keys to display the desired time. Then press
ENTER.
The longest time that can be programmed is 98.99 (98 minutes and 99
seconds).
3. Press VACUUM to start evacuation. The display counts down the time remaining.
If the message “U-HI” appears, you have 25 psi or greater of pressure at the inlet.
You must recover that pressure to continue. If necessary, press RECOVER.
4. When the programmed time has expired, the vacuum pump will automatically shut
off and the display will show “CPL.”
To run the vacuum pump continuously, program the time to “99.00,” press EN-
TER, then press VACUUM. The pump will start and the display will show “CON
AUTOMATIC VACUUM.” To turn the vacuum pump off, press HOLD/CONT,
then press SHIFT/RESET.
HOLD