Hoshizaki KM-901MAH 用户手册
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c) Pump-Out Timer (S4 dip switch 3 & 4)
When a pump-out is called for, the pump motor de-energizes after the preceding freeze
cycle. The pump motor energizes seconds later in the reverse direction, taking water
from the bottom of the tank and forcing pressure against the check valve seat allowing
water to go through the check valve and down the drain. At the same time, water flows
through the small tube to power flush the float switch. 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 0 or 0 seconds.
cycle. The pump motor energizes seconds later in the reverse direction, taking water
from the bottom of the tank and forcing pressure against the check valve seat allowing
water to go through the check valve and down the drain. At the same time, water flows
through the small tube to power flush the float switch. 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 0 or 0 seconds.
S4 Dip Switch Setting Time (seconds)
Inlet
Water
Valve
No. 3
No. 4
T1
T2
OFF
OFF
0
50
Closed
ON
OFF
0
80
Closed
OFF
ON
0
0
Open
ON
ON
0
80
Closed
T: Time to drain the water tank
T: Harvest timer at pump-out
T: Harvest timer at pump-out
d) Pump-Out Frequency Control (S4 dip switch 5 & 6)
The pump-out frequency control is factory set to drain the water tank every 0 cycles,
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 can be set to have a pump-out occur every cycle, or every
, 5, or 0 cycles.
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 can be set to have a pump-out occur every cycle, or every
, 5, or 0 cycles.
Timing of the first pump-out is dependent on the control board. "E" control board first
pump-out is after the first freeze cycle. "G" control board first pump-out is dependent on
S4 dip switch 5 & 6. See the table below.
pump-out is after the first freeze cycle. "G" control board first pump-out is dependent on
S4 dip switch 5 & 6. See the table below.
"E" & "G" Control Board Settings
1st Pump-Out
S4 Dip Switch Setting
Pump-Out
Frequency
"E" Control Board
"G" Control Board
No. 5
No. 6
OFF
OFF
Every cycle
After st freeze cycle
After nd freeze cycle
ON
OFF
Every cycles
After 3rd freeze cycle
OFF
ON
Every 5 cycles
After 6th freeze cycle
ON
ON
Every 0 cycles
After th freeze cycle