Robinair 178012K Recovery, Recycling, Recharging Unit - Manual (Page 26)

© 2000 Robinair, SPX Corporation 24
CHANGING THE FILTER-DRIER
Because the filter housing fitting is a 1 /
4
” flare, you must be in the R-12 mode to
change the filter-drier. If necessary, see Changing Refrigerant Types.
You should change the filter-drier whenever refrigerant has been recovered from a
burn-out system or when the display shows the “CH-F” message (which means that
the unit has recovered 200 pounds of refrigerant since the last change). To change
the filter/drier follow these steps:
1. Press and hold SHIFT/RESET and then press FILTER. The compressor will
start and the display will show the messages “FIL” and “AUTOMATIC.”
2. The compressor will shut off when the vacuum switch trips, and the display will
show the messages “FIL” and “HOLD.”
3. Loosen the large nut on the filter shell cap, and turn the cap counter-clockwise
to remove it.
4. Remove the spring from the top of the filter-drier cartridge. Remove the car-
tridge by lifting on the metal flip-up handle. This is easier if you use a twisting
action or rotate the filter-drier as you pull on it.
5. Open the new filter-drier and generously lubricate the O-ring and flat gasket
with vacuum pump grease. Also lubricate the O-ring on the cap.
6. Place the new filter-drier in the filter shell (flat gasket end first). Replace the
spring.
7. Replace the cap by turning it clockwise (the groove in the shell should align
with the groove in the cap). Torque the large nut to 300 in. lbs.
Important:
Do not remove
the filter-drier
from its sealed
bag until you are
ready to use it.
Maintenance Procedures