Harvest Pump Time (S4 Dip Switch 6); Harvest Pump Timer Operation (S4 Dip Switch 7) - Hoshizaki KML-325MWJ Service Manual

5. Harvest Pump Time (S4 dip switch 6)

Factory set for proper operation. Do not adjust. Adjustment outside of the factory
default setting may result in damage to the appliance.
The harvest pump time starts with 50 sec. left to go in the harvest time (S4 dip switches
1 & 2) after the thermistor reaches 48°F (9°C) at the evaporator outlet and the control
board reads 3.9 kΩ from the thermistor. The harvest pump time is factory set, and no
adjustment is required.

6. Harvest Pump Timer Operation (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.
Depending on the harvest pump time operation 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, X11 and X12
relays energize. A latching circuit is created through the X11 and X10 relays. For further
details, see "VIII.B. Wiring Diagram." 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 50 sec. of harvest.
NOTICE
S5 Dip Switch Setting Harvest Pump Time
No. 6
OFF
ON
NOTICE
S4 Dip Switch Setting
No. 7
OFF
ON
37
50 sec.
25 sec.
Pump Motor
Time (sec.)
Disabled
Enabled