Robinair 34788-I Recovery, Recycling, Recharging Unit - Manual (Page 20)

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5. The display reads PLEASE REPLACE FILTER.
Open the rear door of the unit and unscrew the old
filter. See Figure 13.
6. Look at the new filter—verify both o-rings are
lubricated and correctly located in the grooves. See
Figure 14. Thread the new filter into place. Press
START / YES.
Note: If the display shows SERIAL NUMBER ERROR,
the serial number is invalid or the filter-drier has
already been used in this unit.
7. Close the door. Press STOP / NO to exit. The filter-
drier replacement is now complete.
Replace the Filter-Drier contd.
Filter-
Drier
Rear View
(without shroud)
Figure 13
Scale Calibration Check
The calibration check is used to ensure that the unit’s
internal scale is always calibrated. During this test, use
only the calibration weight that is provided with the unit.
1. Press Menu.
2. Use the arrow keys to scroll to CALIBRATION
CHECK.
3. Refer to Figure 15, and verify the magnet on the
bottom of the unit is clean. Press START / YES.
4. The display reads
ATTACH THE WEIGHT TO THE BOTTOM OF THE
MACHINE
PRESS START TO CONTINUE
5. Attach the weight provided to the magnet on the
bottom of the unit. Press START / YES.
• If the display shows CALIBRATION APPROVED, the
scale is in calibration. Press any key to exit.
• If the display shows CALIBRATION REJECT, the
scale is out of calibration. Call your local service
center for assistance.
• If the display shows CALIBRATION ERROR 1, verify
the calibration weight is correctly attached to the
magnet, and verify the magnet is clean with nothing
attached to it. If that does not correct the problem,
call your local service center for assistance.
Magnet
Figure 15
O-rings
Figure 14