Service Manual

20
c) Pump-Out Timer (S4 dip switch 3 & 4)
NOTICE
Do not adjust S4 dip switch 3& 4 to 3 off and 4 on. Otherwise, pump motor
does not rotate in the pump-out direction.
When a pump-out is called for, the pump motor de-energizes for 2seconds, then
energizes for 10/20 seconds in reverse direction. Water is removed from the bottom of
the water tank and sent down the drain through the check valve. At the same time, water
ows through the small F/S tube to power ush F/S. The pump-out 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, the pump-out timer can be adjusted. The pump-out
timer (S4 dip switch 3 & 4) can be set to have a 10 or 20 second pump-out.
S4 Dip Switch Setting Time (seconds)
Inlet
Water
Valve
No. 3 No. 4
T1
T2
OFF OFF 10 150 closed
ON OFF 10 180 closed
OFF ON 10 120 open
ON ON 20 180 closed
T1: Time to drain the water tank
T2: Harvest timer at pump-out
d) 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 icemaker needs a more frequent pump-out, the pump-out frequency can be
adjusted as shown in the table below.
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