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During each wash program, the dispenser operates twice, once
to dispense detergent and again to dispense rinse-aid.
1. Coil
2. Actuator
3. Rinse-aid pump
4. Optical rinse-aid sensor
5. Cover release lever
The coil
(1)
,
powered by 165
VDC pulses from the control,
moves the detergent cover
actuator
(2)
to the left. A plastic
link turns, rotating the detergent
cover release lever
(5)
, which
opens the detergent cover.
A mechanical link between the coil actuator and rinse-aid valve
prevents rinse aid from being dispensed when the coil is 1
st
actuated. After the detergent cover has opened, the link moves
and latches in place, allowing the rinse-aid pump to dispense
rinse aid.
Each 165 VDC control pulse dispenses 1 ml of rinse aid – the
total amount depends on the dispenser setting. A vent equalizes
internal pressure to dispense rinse-aid accurately.
The actuator is “reset” when the detergent door is opened so the
detergent cover opens first the next time the coil is activated.
Detergent tablets dissolve more slowly if there’s moisture left in
the detergent dispenser. Two plastic ribs in the detergent cup
prevent detergent tablets from “sticking” to the cup.
CAUTION:
Inner door edges are sharp! Cover inner door
edges and remove dispenser carefully.
4.4
Heat pump
4.4.1
Heat pump basics
The heat pump contains the heating element, motor speed
sensor, two temperature sensors (NTC’s), motor and pump
(head). The component parts aren’t available separately.
There’s no flow-through heater, flow switch or Hi-Limit cutout –
the heat pump uses a flow-through heated cylinder. The 120
VAC, 1200W heater cylinder provides more heating surface area
and heats water faster (~ 2ºF / minute).
The pump impeller is driven by a 3-pole BLDC motor controlled
by the power module.
1. Pump suspension strap
2. Heating element
3. Seal ring
1
2
3
1
2
1 2
3
4
3
5