Printed Circuit Board Opl - Dexter Laundry T-300 Service Procedures And Parts Data

Machine Electrical & Wiring Schematics
Pressure Switch
The pressure switch sets the water level in the washer. As the water
level rises, it compresses the air in the pressure switch hose. When
the washer reaches the desired water level, the compressed air in
the pressure switch hose opens the contacts in the switch, shutting
off the water. When at the empty level, the pressure switch contacts
Dual Level Pressure Switch
are closed allowing the machine to either spin or fi ll with water.
The 1/4" screw in the middle of the switch adjusts the water level.
Turning it clockwise 1/8 of a turn will raise the water level 1/4 of an
inch. Counter clockwise will lower the water level. Before making
any adjustments of the pressure switch, drain the tub and blow
the hose clear of possible water bubbles which can cause erratic
pressure switch operation. With no load, the water level should be
approximately at the bottom to 1/2" to 1" up from the bottom of the
glass on ALL models.
Rear
Power Connection Terminal Block &
Injection Terminal Strip
This terminal block sets at the very back of the control trough.
Incoming power to the washer should connect here. (see Electrical
under Installation and Operation Section for exact connections)
LED Printed Circuit Board & Start
Terminal Block Rear
Display/Push-Button Assembly
View With Chemical
Injection
The selector switch is mounted in the center of the control panel
and is held in place with fi ve nuts. Note: Do not over tighten on
reinstallation as the switch can be damaged, stay pushed in
and will cause erratic displays.
Optional Printed Circuit Board OPL
This PCB board is used to give chemical injection signals to the
Optional Relay Board
rear injection terminal.
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