Hoshizaki AMERICA 73183, Руководство по обслуживанию

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13
b) Freezer
1. Startup/Cool Down
MH and PH energize. There is a slight delay before cabinet temperature appears on
DM and Comp, ConFM, and EvapFM energize.
2. Cool Down Achieved
CM monitors cooling of the cabinet via CTh. CTh cools to 3
°
F (1.7
°
C) below setpoint.
EvapFM, MH, and PH continue. Comp and ConFM de-energize.
3. Cool Down Restart
CTh warms to 3
°
F (1.7
°
C) above setpoint. EvapFM, MH, and PH continue. Comp and
ConFM energize.
4. Defrost
"dEF" is displayed during defrost. There is a 5-minute minimum defrost time and a 1-hour
maximum defrost time.
a) Temperature/Time Initiation: DTh cools to 32
°
F (0
°
C), then a 4-hour cumulative Comp
run timer starts. Once 4-hour cumulative Comp run timer terminates and DTh is at or
below 32
°
F (0
°
C), defrost begins. DH energizes, MH and PH continue, Comp, ConFM,
and EvapFM de-energize.
b) Manual Initiation: Manual defrost may be initiated by pressing and holding the lower
button until "dEF" appears on DM. MH and PH continue. DH energizes, Comp, ConFM,
and EvapFM de-energize.
c) Termination
(1) After Temperature/Time Initiation: DTh warms to 59
°
F (
15°
C). 3-minute Comp
delay timer starts, 8-minute EvapFM delay timer starts, and 13-minute temperature
display delay timer starts. MH and PH continue, DH de-energizes.
3-minute Comp delay timer terminates. Comp and ConFM energize. 5 minutes
later, 8-minute EvapFM delay timer terminates and EvapFM energizes. 5 minutes
after EvapFM energizes, 13-minute temperature display delay timer terminates and
cabinet temperature returns to DM.
(2) After Manual Initiation: DTh warms to 59°F (15°C). MH and PH continue, DH
de-energizes. 3-minute Comp/EvapFM delay timer starts, 13-minute temperature
display delay timer starts.
3-minute Comp/EvapFM delay timer terminates. Comp, ConFM, and EvapFM
energize. 10 minutes later, 13-minute temperature display delay timer terminates
and cabinet temperature returns to DM.
Note: There is a 4-hour minimum defrost interval.
Legend: CM –control module; Comp –compressor; ConFM –condenser fan motor;
CTh –cabinet thermistor; DH –defrost heater; DM –display module;
DTh –defrost thermistor; EvapFM –evaporator fan motor; MH –mullion heater;
PH –perimeter heater