Follett 12CI425A-L, Руководство по эксплуатации и обслуживанию

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32 12CI425A • 12HI425A
Refrigeration system
Important: All service on refrigeration system must be performed in accordance with all federal, state and
local laws that pertain to the use of refrigerants. It is the responsibility of the technician to ensure that these
requirements are met.
R425 ice machine charge specifications
Model
Charge Refrigerant type
12CI425A, 12HI425A (air-cooled) 15 oz R404A
CAUTION!
§
Recharging of unit at other than factory specifications will void ice machine warranty.
Refrigerant replacement requirements
1. Non-contaminated refrigerant removed from any Follett refrigeration system can be recycled and
returned to the same system after completing repairs. Recycled refrigerant must be stored in a clean,
approved storage container. If additional refrigerant is required, virgin or reclaimed refrigerant that
meets ARI standard 700-88 must be used.
2. In the event of system contamination (for example, a compressor burn out, refrigerant leak, presence
of non-condensibles or moisture), the system must be repaired, evacuated and recharged using virgin
or reclaimed refrigerant that meets ARI standard 700-88.
3. Follett Corporation does not approve of recovered refrigerants. Improper refrigeration servicing
procedures will void the factory warranty.
Evacuation
Evacuate the system to a level of 500 microns. When the 500 micron level is reached, close valves and both
manifold and shut down the vacuum pump. Allow the system to sit for approximately 20 minutes. During this
period the system pressure should not rise. If the system pressure rises and stabilizes there is moisture in the
system and further evacuation is needed. If the pressure continues to rise check the system for leaks.
Ice capacity test
Ice machine production capacity can only be determined by weighing ice produced in a specific time period.
1. Remove top panel and hopper lid of unit.
2. Weigh and record weight of container used to catch ice.
3. Run ice machine for at least 15 minutes.
4. Catch ice for 15 or 20 minutes.
5. Weigh harvested ice and record total weight.
6. Subtract weight of container from total weight.
7. Convert fractions of pounds to decimal equivalents (Ex. 6 lbs 8 oz = 6.5 lbs).
8. Calculate production using following formula:
1440 min. x wt. of ice produced
= Production capacity/24 hr. period
Total test time in minutes
9. Calculated amount per 24 hours should be checked against rated capacity for same ambient and
water temperatures in Ice Production Table (see page 31).