Filter
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Section 7 Refrigeration System
Part No. 80-1214-3 7-23
FILTER-DRIERS
Liquid Line Filter Drier
The filter-driers used on Manitowoc ice machines are
manufactured to Manitowoc specifications.
The difference between Manitowoc driers and off-the-
shelf driers is in filtration. Manitowoc driers have dirt-
retaining filtration, with fiberglass filters on both the inlet
and outlet ends.
These filter-driers have a very high moisture removal
capability and a good acid removal capability.
The size of the filter-drier is important. The refrigerant
charge is critical. Using an improperly sized filter-drier
will cause the ice machine to be improperly charged with
refrigerant.
Listed below are the recommended O.E.M. field
replacement driers:
Suction Line Filter
Remote condensing units have a suction line filter to trap
particles introduced during field installation. The suction
filter does not have acid or moisture removal capabilities.
SUCTION CLEAN-UP FILTER/DRIER
QF400/QC700/QF800
Contaminated systems must have a suction line filter/
drier installed to remove contamination (See System
Contamination Clean-Up Procedures). An access valve
must be installed on the inlet side of the suction filter to
allow pressure drop readings to be obtained.
Remote Models
Contact your local Manitowoc Distributor for suction filter
capable of cleaning the system. The clean-up filter drier
must have a minimum nominal capacity of 3 hp. After
clean-up is complete (see System Contamination Clean-
Up Procedures), remove clean-up filter drier and replace
with new suction filter.
TOTAL SYSTEM REFRIGERANT CHARGES
NOTE: All ice machines on this list are charged using
R-404A refrigerant.
Model
Drier
Size
End
Connection
Size
Part
Number
QF400
QC700
QF800
UK-032S 1/4" 89-3025-3
QF2200/
QF2300
UK-083S 3/8" 89-3021-3
Important
The liquid line driers are covered as a warranty part.
The liquid line drier must be replaced any time the
system is opened for repairs.
Model
Drier
Size
End
Connection
Size
Part
Number
RFC2085/
RFC2385
ASF-45S6 3/4” 82-5026-3
Model
Drier
Size
End
Connection
Size
Part
Number
QF400
QC700
QF800
UK-165S 5/8” 89-3028-3
Important
This information is for reference only. Refer to the
ice machine serial number tag to verify the system
charge. Serial plate information overrides
information listed on this page.
Series Charge
QF400 13 oz. (369 g)
QC700
QF800
Air-Cooled - 20 oz (567 g)
Water-Cooled - 16 oz (454 g)
QF2200/QF2300
RFC2085/
RFC2385
0’ to 50’ linesets 12.5 lbs (5.7 kg)
50’ to 100’ linesets 14.0 lbs (6.4 kg)
Revised 8/2003