Hoshizaki KM-1301SAH/3 Service Manual page 27

Stackable crescent cuber
Hide thumbs Also See for KM-1301SAH/3:
Table of Contents

Advertisement

h) Freeze Termination Diagnosis: After 5 min. in freeze, disconnect CB K5 FS
connector. 15 sec. later appliance should switch out of the freeze cycle (15 second
delay after FS opens before terminating the freeze cycle). If appliance remains in
freeze longer than 15 sec. after FS removed, replace CB. If appliance switches with
FS removed but would previously not switch out of freeze with FS connected (long
freeze - 3 beep alarm), see "II.E. Float Switch Check and Cleaning."
Note: Normal freeze cycle will last 20 to 40 min. depending on model and conditions.
Cycle times and pressures should follow performance data provided in this
manual. See "VIII.A. Specification and Performance Data."
i) Short Freeze Cycle Diagnosis: Confirm water tank fills and overflows during 1 min.
fill and harvest cycles. If not, check water supply filters, shut-off valve, WV screen.
If water tank empties before 5 min. timer terminates and freeze cycle is short, check
that CV is not leaking by (water flowing down the potable drain). If CV is leaking by,
remove and clean CV, replace rubber seat and spring if necessary. If water tank is
full, see "II.E. Float Switch Check and Cleaning" for erratic operating FS.
7) Pump-Out Cycle – LEDs 1, 3, and 2 are on (10/20 second pump-out). Timing of the
first pump-out is dependent on CB. "E" CB first pump-out is after the first freeze cycle.
"G" CB first pump-out is determined by S4 dip switch 5 & 6. See the table below.
"E" & "G" Control Board Settings
S4 Dip Switch Setting
No. 5
OFF
ON
OFF
ON
Comp and FMR continue, HGV energizes. If S4 dip switch 3 & 4 are set to 3 off and
4 on, LED 4 turns on and WV energizes. FM and LLV de-energize. PM stops for 2 sec.,
then reverses for 10/20 sec. depending on pump-out timer (S4 dip switch 3 & 4) setting.
When the pump-out timer terminates, pump-out is complete. The pump-out frequency
control (S4 dip switch 5 & 6) is factory set, and generally no adjustment is required.
However, the pump-out frequency control can be set to have a pump-out occur every
cycle, or every 2, 5, or 10 cycles. For details, see "III.C.4. Pump-Out Frequency Control
(S4 dip switch 5 & 6)."
Pump-Out Diagnosis: In the freeze cycle before pump-out (see table above),
disconnect CB black K5 connector (FS connector) after 5 min. of freeze. Check that PM
stops and re-starts and water is flowing down the drain through CV. If PM does not stop
and re-start, check that CB LEDs 1, 3, and 2 are on. If not, replace CB. If LEDs 1, 3,
and 2 are on and PM does not energize, check for 115VAC at CB K1 #5 (DBU) to
neutral (W). If 115VAC is not present, replace CB. If 115VAC is present, make sure the
drain line is not clogged and that CV is clean and operating properly.
Confirm FM and LLV de-energize. If FM or LLV is energized with LEDs 1, 3, and 2 on,
replace CB.
Pump-Out
Frequency
No. 6
OFF
Every cycle
OFF
Every 2 cycles
ON
Every 5 cycles
ON
Every 10 cycles
1st Pump-Out
"E" Control Board
After 1st freeze cycle
27
"G" Control Board
After 2nd freeze cycle
After 3rd freeze cycle
After 6th freeze cycle
After 11th freeze cycle

Advertisement

Table of Contents
loading

Table of Contents