Hoshizaki KM-470AJ Service Manual page 14

Hide thumbs Also See for KM-470AJ:
Table of Contents

Advertisement

g) 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. DIMENSIONS/SPECIFICATIONS."
h) 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 determined by S4 dip switch 5. See the table below.
S4 Dip Switch Setting
Comp and FM continue, HGV energize.
Note: If S4 dip switch 3 & 4 are set to 3 off and 4 on, LED 4 turns on and WV and X11
relay energize, energizing X10 relay. NOTICE! S4 dip switch 3 & 4 must not be set
to 3 off and 4 on. Otherwise, PM will rotate in freeze cycle direction instead of
pump-out direction.
LLV de-energizes. 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) 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 10 cycles or every cycle. For details, see
"III.C.4. Pump-Out Frequency Control (S4 dip switch 5)."
Control Board Settings
Pump-Out Frequency
No. 5
OFF
Every 10 cycles
ON
Every cycle
Control Board
After 11th freeze cycle
After 2nd freeze cycle
14

Advertisement

Table of Contents
loading

Table of Contents