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e) Harvest Pump Timer (S4 dip switch 7)
NOTICE
Factory set for proper operation. Do not adjust. Adjustment outside of the factory
default setting may result in damage to the icemaker.
Depending on the harvest pump timer setting, the pump motor either stays off or is
energized the last 50 seconds of harvest. When the pump motor is energized, water
circulates over the evaporator. The harvest water valve is open during harvest for a
maximum of 6 minutes or the length of harvest minus 0 or 50 seconds (determined by
the harvest pump timer setting), whichever is shorter.
When S4 dip switch 7 is in the on position and harvest begins, X10 relay energizes
and allows the harvest water valve, X12, and X13 relays to energize. A lockout circuit is
created using the X10, X12, and X13 relays. This prevents the drain valve from energizing
during harvest pump timer. See "III.B. Wiring Diagram."
50 seconds before harvest termination, LED 4 goes off de-energizing WV2 (harvest
water valve) and X12 relay. X13 relay remains energized through the holding circuit
through X10 and X13 relays. Next, LED 3 on the control board turns on and X11relay
energizes, allowing the pump motor to energize. The pump motor is energized the last
50seconds of harvest.
S4 Dip Switch Setting
Pump Motor
Time (seconds)
No. 7
ON 50
OFF 0
f) Factory Use (S4 dip switch 8)
Factory set for proper operation. Do not adjust. This must be left in the factory default
position.
g) Freeze Timer (S4 dip switch 9 & 10)
NOTICE
Adjust to proper specication, or the icemaker may not operate correctly.
The freeze timer setting determines the maximum allowed freeze time to prevent possible
freeze-up issues. Upon termination of 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 for
recommendations.
Dip Switch Setting
Time
(minutes)
No. 9 No. 10
OFF OFF 60
OFF ON 50
ON OFF 70
ON ON 60