Hoshizaki KM-1301SRH/3 Ice Maker User Manual


 
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5) Freeze Cycle – LED 1 is on. Comp and FMR remain energized, PM energizes
or remains energized depending on harvest pump timer (S4 dip switch 7) setting.
FM and LLV energize. HGV, and X1 relay (auxiliary code T-0, U-0), X10 relay
(auxiliary code U-1 and later) de-energize. The unit is held in freeze by a 5-minute
short cycle protection timer (CB will not accept a signal from F/S). After the 5-minute
short cycle protection timer expires, CB turns freeze termination over to F/S. During
the rst 5 minutes of freeze, conrm that the evaporator temperature drops. After
5 minutes in freeze, disconnect black F/S connector from CB BLACK K5 connector.
After a 15 second delay, the unit should switch out of the freeze cycle. Diagnosis: If
the evaporator is not cold, check to see if HGV is still open or if TXV is not opening
properly, if WV is continuing to ll the reservoir, if there are improper unit pressures,
an inoperative Comp, or an inoperative HM. If the unit switches out of freeze with F/S
connector removed, but would previously not switch out of freeze with F/S connected
(long freeze - 3 beep alarm), F/S may be sticking. To check and clean F/S, see "IV.
D. Float Switch Check and Cleaning." If the unit remains in freeze longer than 15
seconds after disconnecting black F/S connector, replace CB. See "V.P. Removal and
Replacement of Control Board."
Note: Normal freeze cycle will last 0 to 40 minutes depending on model and
conditions. Cycle times and pressures should follow performance data provided
in this manual. See "III.C. Performance Data."
6) Pump-Out Cycle – (10/20 second pump-out) – LEDs 1, 3, and 2 are on. LED 4 is on
when S4 dip switch 3 & 4 are set to 3 off and 4 on. CAUTION! Do not adjust S4 dip
switch 3 & 4 to 3 off and 4 on. Adjustment to this position on this model prevents
the unit from operating correctly and may cause damage. For details, see "II.
C.3.c) Pump-Out Timer (S4 dip switch 3 & 4)." Comp and FMR remain energized, HGV
energizes. WV energizes if S4 dip switch 3 off and 4 on. LLV and FM de-energize.
PM stops for  seconds, then reverses for 10/0 seconds depending on pump-out
timer S4 dip switch 3 & 4 setting. When the pump-out timer expires, the pump-out
is complete. The pump-out frequency control is factory set for every 10th cycle, and
generally no adjustment is required. However, where water quality is bad and the
icemaker needs a pump-out more often, the pump-out frequency can be adjusted.
The pump-out frequency control (S4 dip switch 5 & 6) can be set to have a pump-out
occur every cycle, or every , 5, or 10 cycles. For details, see "II.C.3.d) Pump-Out
Frequency Control (S4 dip switch 5 & 6)."
Timing of the rst pump-out is dependent on S4 dip switch 5 & 6 settings. See the table
below
S4 Dip Switch Setting
Pump-Out
Frequency
1st Pump-Out
No. 5 No. 6
OFF OFF Every cycle After nd freeze cycle
ON OFF Every  cycles After 3rd freeze cycle
OFF ON Every 5 cycles After 6th freeze cycle
ON ON Every 10 cycles After 11th freeze cycle