Hoshizaki KM-1601SAH/3 Pump-Out Cycle, S4 Dip Switch Setting Pump-Out 1st Pump-Out Frequency

continues until F/S opens and terminates the cycle. There is a 15 second delay before CB acknowledges an open F/S.

(4) Pump-Out Cycle

LEDs 1, 3, and 2 are on. LED 4 is on when S4 dip switch 3 & 4 are set to 3 off and 4 on. For details, see "II.C.3.c) Pump-Out Timer (S4 dip switch 3 & 4)." CAUTION! Do not adjust S4 dip switch 3 & 4 to 3 off and 4 on. Adjustment to this position on this model prevents the pump motor from rotating in the pump-out direction. Comp and FM remain energized, HGV energizes, WV energizes if S4 dip switch 3 off and 4 on. LLV de‑energizes. PM stops for 2 seconds then reverses, taking water from the bottom of the water tank and forcing pressure against the pump-out check valve seat allowing water to go through the pump-out check valve and down the drain. At the same time, water flows through the small tube to power flush F/S. When the pump‑out timer terminates, pump- out is complete.

The first pump-out occurs after the 11th freeze cycle, then every 10th cycle thereafter. The pump-out frequency control is factory set, and 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 (S4 dip switch 5 &

6)can be set to have a pump-out occur every cycle, or every 2, 5, or 10 cycles. Timing of the first pump-out is dependent on S4 dip switch 5 & 6 settings. See the table below.

S4 Dip Switch Setting		Pump-Out	1st Pump-Out
No. 5	No. 6	Frequency
OFF	OFF	Every cycle	After 2nd freeze cycle
ON	OFF	Every 2 cycles	After 3rd freeze cycle
OFF	ON	Every 5 cycles	After 6th freeze cycle
ON	ON	Every 10 cycles	After 11th freeze cycle

(5) Harvest Cycle

Same as the initial harvest cycle. See "II.B.1.a)(2) Initial Harvest Cycle."

Note: Unit continues to cycle until TBC is satisfied or power is turned off. The unit always restarts at the 1-minute fill cycle.

(6) Shutdown

When ice contacts TBC bulb (TBC open), TBC shuts down the unit within 10 seconds. TBC is factory set, and generally no adjustment is required. However, adjustment may be needed in some conditions, particularly at higher altitude locations.

Legend: CB–control board; Comp–compressor; FM–fan motor; F/S–float switch; HGV–hot gas valve; LLV–liquid line valve; PM–pump motor; TBC–thermostatic bin control; WV–inlet water valve

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