Robinair 17700Z Recovery, Recycling, Recharging Unit - Manual (Page 9)

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34700Z Recovery, Recycling, Recharging Unit
Operating Instructions
Recover Refrigerant
1. Empty the oil drain bottle located on the right-hand
side of the unit, if necessary, or make note of the
current oil level. See Figure 4.
2. Connect the high- and low-side hoses to the vehicle
A/C system.
3. Open the coupler valves on the hoses.
4. Press RECOVER .
5. When the system has recovered to a vacuum level of
approximately 13 in. Hg, the compressor
automatically shuts off. The unit goes into an
automatic oil drain—this may require 90 seconds to
complete.
6. After the oil drain is complete, the display alternates
between :
RECOVER COMPLETE
CHECK OIL BOTTLE
RECOVERED XX.XX LBS. (X.XX KG)
Note: The displayed recovered weight can vary
depending on ambient conditions, and should not be
used as an indicator of scale accuracy.
7. Check the oil drain bottle, and note the amount of oil
that was removed from the A/C system. This is the
amount of oil that must be charged into the A/C
system after evacuation is complete.
8. A pressure rise may occur if there was freezing in
the A/C system during recovery.
To ensure complete recovery of refrigerant, the unit
will automatically wait 5 minutes and monitor for a
rise in pressure above 0 in. Hg.
If a rise occurs, the unit will repeat the recovery
process, and wait another 2 minutes for a pressure
rise above 0 in. Hg.
The unit will continue to recover and wait until it
maintains a vacuum for 2 minutes.
Note: The high- and low-side lights on the control
panel will remain ON until the recovery is complete.
9. Press STOP / NO to exit.
Recovery is complete. You are now ready to make
repairs to the A/C system, if necessary, or advance to
the evacuation process.
Oil Drain
Bottle
Figure 4
Operating Tips
• After selecting the RECOVER function, if
system pressure is below 25 psi, the display
reads
LOW SYSTEM PRESSURE
until pressure increases, or the START /
YES button is pressed. Verify the high- and
low-side hoses are connected and the
coupler valves are open. Press
STOP / NO
to exit at this point.
• After selecting the RECOVER function, if
150 lbs. (68 kg) or more of refrigerant has
been recovered since the last filter-drier
change, the display reads
FILTER WEIGHT XXX LB (XX KG)
CHANGE FILTER NOW?
Refer to the Filter Change Procedure in
Maintenance section of this manual for
details regarding replacing the filter.
• After selecting the RECOVER function, if
the unit has refrigerant in the low-side
plumbing, it begins a clearing process and
displays
CLEARING IN PROGRESS
If you wish to skip the clearing operation,
or stop the clearing prematurely, press
START / YES .