Pump-Out Frequency Control (S4 Dip Switch 5 & 6); Harvest Pump Timer (S4 Dip Switch 7); Factory Use (S4 Dip Switch 8) - Hoshizaki KMS-1122MLH Service Manual

4. Pump-Out Frequency Control (S4 dip switch 5 & 6)
The pump-out frequency control is factory-adjusted to drain the water tank every
10 cycles, and generally no adjustment is required. However, where water quality is bad
and the appliance needs a more frequent pump-out, the pump-out frequency can be
adjusted as shown in the table below.
Timing of the first pump-out is dependent on S4 dip switch 5 & 6 settings. See the table
below.
S4 Dip Switch Setting

5. Harvest Pump Timer (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.
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. This prevents the
drain valve from energizing. For further details, see "VIII.C. Wiring Diagrams."
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 and the pump
motor energizes for the last 50 sec. of harvest. The inlet water valve and X11 relay are
energized during harvest for a maximum of 6 min. or the length of harvest minus 50 sec.,
whichever is shorter.

6. Factory Use (S4 dip switch 8)

Factory set for proper operation.
Do not adjust. This must be left in the factory default position.
No. 5 No. 6
OFF OFF
ON OFF
OFF ON
ON ON Every 10 cycles
S4 Dip Switch Setting
No. 7
ON
OFF
Pump-Out
1st Pump-Out
Frequency
Every cycle After 2nd freeze cycle
Every 2 cycles After 3rd freeze cycle
Every 5 cycles After 6th freeze cycle
After 11th freeze cycle
NOTICE
Pump Motor
Time (sec.)
50
0
NOTICE
30