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Technical Data & Tech Tips
Optional Drain Pump
The optional drain pump consists of a motor, a pump that is magnetically coupled to the motor, a water
reservoir with sensing devices, an electronic control board that controls the water level in the reservoir
using the sensing probes.
How It Works
1.
Water enters the pump reservoir from the
ice machine bin.
2.
The reservoir has three probes for sensing
water level:
High Water Cut-In
High Water Shut Off
Common
As the water level rises to contact the high water cut-in probe in the reservoir, a signal is sent
to the electronic control board. The control board performs a low voltage comparison by water
contact between the high water cut-in and common probes. If water is contacting both probes
the pump motor turns on and the pump runs.
Once the water level drops and breaks the contact between the high water cut-in and common
probes, the electronic control board will turn the pump motor off after a built-in 12 second
delay. This delay prevents the motor from short cycling and over heating.
3.
If the the drain outlet becomes clogged to the point where water will not be allowed to be
pumped out or a large volume of water enters the reservoir quickly, the high water shut off
probe will come in contact with the water. If this occurs, the signal sent to the electronic control
board will trigger a complete shut down of the ice machine. The pump motor will continue to
function in this mode until the reservoir is empty or the motor cycles off from over heating.
(The motor is equipped with a resettable thermal fuse.)
Drain Pump Installation
1.
Pull the ice machine from its installed position.
2.
Disconnect the power supply cord from the wall outlet.
3.
Remove the seven screws securing the rear component compartment cover to the cabinet.
4.
Slide the drain pump into the back of the cabinet.
5.
If the unit already has a drain tube connected
to the ice bin outlet, remove it and the clamp
attached to the bin. (Clamp will be used later.)
6.
Install the new drain tube (Part No. 2185672)
provided in the drain pump kit. Use the clamp
removed earlier to secure the new drain tube
to the bin.
(Fig. 1) .
Model 235
Model 235
Condenser
Fig. 1
Drain Tube
(Bin to Pump)
Drain Pump
Reservoir Inlet
8-6
Ice Bin
Drain Pump
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