E) Harvest Pump Timer (S4 Dip Switch 7); F) Factory Use (S4 Dip Switch 8); G) Freeze Timer (S4 Dip Switch 9 & 10) - Hoshizaki Serenity Series KMS-830MLH Service Manual

e) Harvest Pump Timer (S4 dip switch 7)

Factory set. Do not adjust. Adjustment outside of the factory default setting may
result in damage to the icemaker.
When S4 dip switch 7 is in the on position, the pump motor energizes and runs the last
50 seconds of the harvest cycle. The control board K1 connector pin #5 (DBU wire)
is used to energize the pump motor for the harvest pump timer (forward rotation) and
pump-out cycle (reverse rotation).The pump motor is energized in the harvest cycle
through the control board K1 connector pin #5 (DBU wire) and the energized X10 relay.
The pump motor is energized in the pump-out cycle through the K1 connector pin
#5 (DBU wire) and the de-energized X10 relay. The X11 and X10 relays control the pump
motor direction during the harvest (forward rotation) and pump-out (reverse rotation)
cycles. The water valve and X11 relay are energized during harvest for a maximum of
6 minutes or the length of harvest minus 50 seconds, whichever is shorter.

f) Factory Use (S4 dip switch 8)

Factory set. Do not adjust. This must be left in the factory default position.
g) Freeze Timer (S4 dip switch 9 & 10)
Adjust to proper specification, or the unit may not operate correctly.
The freeze timer setting determines the maximum allowed freeze time to prevent possible
freeze-up issues. Upon termination of the freeze timer, the control board initiates the
harvest cycle. After 2 consecutive freeze timer terminations, the control board shuts
down the icemaker. In this case, see "IV.F.3. Low Ice Production" for possible solutions.
The freeze timer is factory set, and generally no adjustment is required. Before changing
this setting, contact your local Hoshizaki distributor or Hoshizaki Technical Support at
1-800-233-1940 for recommendations.
NOTICE
S4 Dip Switch Setting
No. 7
ON
OFF
NOTICE
S4 Dip Switch Setting
No. 9 No. 10
OFF OFF
OFF ON
ON OFF
ON ON
21
Pump Motor
Time (seconds)
50
0
Time
(minutes)
60
50
70
60