Hoshizaki KMS-1401MLJ Service Manual page 32

Modular crescent cuber serenity series including condensing unit models srk-14j/3
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5) Freeze Cycle – LED 1 and 4 are on. Comp, FMRs, and PM remain energized (CB K1
connector pin #5 (DBU wire) de-energizes and K1 connector pin #4 (R wire) energizes
to prevent PM interruption). LLVs energize. WV1 and LED 4 energize for 1 min. HGVs,
X10, X11, and X13 relays de-energize.
Refill – LEDs 1 and 4 are on. The KMS-1401MLJ uses a single F/S with a double
F/S, UF/S refill initiation float switch selector setting (S5 dip switch 1) and is set for
1 refill (S5 dip switch 2 through 5). When the freeze cycle starts, CB monitors UF/S.
No UF/S exists on the KMS-1401MLJ, therefore CB reads an open UF/S immediately
when the freeze cycle starts and initiates a refill (CB energizes WV1 through X10 relay).
Since there is no UF/S to close and terminate the refill, the refill lasts for the maximum
1-minute. During the 1-minute refill, LED 4 is on. Comp, FMRs, LLVs, and PM remain
energized.
Freeze Termination – LED 1 is on. The icemaker is held in freeze by a 5-minute short
cycle protection timer. When F/S opens, the freeze cycle terminates.
Diagnosis: Minimum freeze time is 5 minutes. During the first 5 minutes of freeze,
confirm that Comp, FMRs, PM, and LLVs are energized, WV1 is energized for 1 min.,
and HGVs and WV2 are de-energized and not bypassing. The evaporator temperature
should be dropping. Make sure TXVs and HM are operating properly. Check that DV is
not leaking by (water flowing down the potable drain). Check for proper unit pressures
(see "III.C. Performance Data") or an inoperative Comp. Disconnect the black K5 F/S
connector. When 5 or more minutes have elapsed in the freeze cycle, the icemaker
should switch out of the freeze cycle. After the icemaker switches out of freeze,
reconnect the black K5 F/S connector to CB. If the icemaker remains in freeze with F/S
disconnected, replace CB. To check F/S, see "IV.D. Float Switch Check and Cleaning."
Note: Normal freeze cycle will last 30 to 35 minutes depending on model and
conditions. Cycle times and pressures should follow performance data provided in
this manual. See "III.C. Performance Data."
32

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