American Dryer Corp MLS-460 manual Lint Drawer Proximity Switches

c.Lint Drawer Proximity Switches

The “Lint Drawer Proximity Switches” are located on the left side of the MLS-460 base, and is comprised of six (6) parts: Junction Box, two (2) proximity switches, and three (3) cord grip switches. The switches sense a magnet installed on the lint drawer that verify that ALL safeties are met to the Burner Controller and also signal the PLC that enables the MLS-460 to begin drying cycle.

NOTE: Front and Rear Drawers are not interchangeable.

“B” is used as an electrical interlock to the PLC’s 110 VAC output power

d.Lint Chamber Pressure Switch -- PS3

The “Lint Chamber Pressure Sensing Switch” is located on the left rear side of the MLS-460 base. It is an adjustable pressure switch, which incorporate a single-pole-single-throw (SPST) switch. PS3’s electrical function is to close its switch when the present pressure in the lint chamber is sufficient. This switch is wired in series with other switches to form an interlock to the Burner Control Module.

2.0Tumbler Tilt Problems “LEVEL FAULT”

A “LEVEL FAULT” message is generated by the incorrect state of either the FRONT or REAR sensor switches. The following information will address the “LEVEL” signals, since they are associated with the Base Electrical Junction Box.

a.PROBABLE CAUSES;

1)WIRING BACK TO THE PLC (Programmable Logic Controller)

LS1-B=FRONT DOWN SWITCH LS2-B=REAR DOWN SWITCH

b.PROBABLE SOLUTIONS;

1)For a quick check of the FRONT DOWN and REAR DOWN signals to the PLC (Programmable Logic Controller) perform the following:

FRONT DOWN signal test procedure 1a REAR DOWN signal test procedure 1b

1a) Place the MLS-460 in the LOAD position; Front Up

•Actuate the Front Down switch by hand

•Have someone verify that PLC (Programmable Logic Controller) input #11 lights when the switch actuator is down, and is OFF when the actuator is up.

•Does L.E.D. #11 come “ON” when the switch is down?

• If “YES,” wiring is okay

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