Harvest Pump Time (Harvest Assist) (S4 Dip Switch 7); Factory Use (S4 Dip Switch 8) - Hoshizaki KM-470AJ Service Manual

6. Harvest Pump Time (Harvest Assist) (S4 dip switch 7)

Factory set for proper operation. Do not adjust. Adjustment outside of the factory
default setting may result in damage to the appliance.
a) Harvest Pump Time (Harvest Assist)
Depending on S4 dip switch 7 setting, the pump motor either stays off or is energized
during the last seconds of the harvest cycle. When the pump motor is energized (S4
dip switch 7 on), 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 the harvest
pump time value (S4 dip switch 6), whichever is shorter.
When S4 dip switch 7 is in the on position and harvest begins, X11 and X10 relays
energize. A latching circuit is created through the X11 and X10 relays. For further
details, see "VIII.B. Wiring Diagrams." In the factory default position, 50 sec. before
harvest termination, LED 4 turns off, inlet water valve and X11 relay de-energize. X10
relay remains energized through the latching circuit. Next, LED 3 turns on and control
board K1 connector pin #5 (DBU wire) energizes, energizing the pump motor for the
last seconds of harvest. Harvest pump time adjusted by S4 dip switch 1 & 2 and S5 dip
switch 4 settings. Contact Technical Support before adjusted these settings.

7. Factory Use (S4 dip switch 8)

Factory set for proper operation. Do not adjust. This must be left in the factory default
position.
NOTICE
S4 Dip Switch Setting Harvest Pump Time
No. 7
OFF
ON
32
(Harvest Assist)
Disabled
Enabled