Pump-Out Timer (S4 Dip Switch 3 & 4); Pump-Out Frequency Control (S4 Dip Switch 5) - Hoshizaki DKM-500BAJ Service Manual

3. Pump-Out Timer (S4 dip switch 3 & 4)
Do not adjust 3 off and 4 on. Drain valve does not energize in this setting.
When a pump-out is called for, the pump motor stops for 2 sec. After 2 sec. the drain
valve and pump motor energize. The pump motor drains the water tank for the time
determined by the pump-out timer. The pump-out timer also acts in place of the harvest
timer during cycles with a pump-out. The pump-out timer is factory set, and generally no
adjustment is required. However, where water quality is bad and the icemaker needs a
longer pump-out time, the pump-out timer can be adjusted. The pump-out timer control
can be set to pump-out for 10 or 20 sec.
S4 Dip Switch Setting
T1: Time to drain the water tank
T2: Harvest timer at pump out

4. Pump-Out Frequency Control (S4 dip switch 5)

The pump-out frequency control is factory set to drain the water tank every 10 cycles.
Generally no adjustment is required. However, where water quality is bad and the
icemaker needs a pump-out more often, the pump-out frequency can be adjusted. The
pump-out frequency control can be set to have a pump-out occur every cycle, or every
2, 5, or 10 cycles.
The first pump-out is dependent on S4 dip switch 5. See the table below.
S4 Dip Switch Setting
NOTICE
No. 3 No. 4
OFF OFF
ON OFF
OFF ON
ON ON
No. 5
OFF Every 10 cycles
ON
Time (sec.)
Inlet Water
T1
T2
10 150
10 180
10 120
20 180
Pump-Out
1st Pump-Out
Frequency
After 11th freeze cycle
Every cycle After 2nd freeze cycle
34
Valve
Closed
Closed
Open
Closed