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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 ows
through the small tube to power ush F/S. When the pump-out timer terminates, pump-
out is complete.
The rst 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 rst pump-out is dependent on S4 dip switch 5 & 6 settings. See the table below.
S4 Dip Switch Setting
Pump-Out
Frequency
1st Pump-Out
No. 5 No. 6
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 satised or power is turned off. The unit always
restarts at the 1-minute ll 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–oat switch; HGV–hot
gas valve; LLV–liquid line valve; PM–pump motor; TBC–thermostatic bin control;
WV–inlet water valve