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d) Tumbler Junction Box
This enclosure interfaces the tumbler’s electrical hardware, to the Main Electrical Panel. The
disconnect plug, attached to this enclosure, provides a means of electrical separation of these tumbler
(basket) section, for shipping.
Refer to ML-460 Tumbler Junction Box Diagram for detailed wiring information.
The following is for 2-Door Models ONLY
e) Unload 1 “Rear Panel” – SEL 4
This is normally open, two (2) position, selector switch for unloading the dryer from the rear. Once the
selector switch is turned to “1,” Pendant control functions are disabled, rear doors open, and the dryer
front tilts up.
f) DRUM FORWARD “Rear Panel” – PB3
This push button switch comprises of two individual switches; one normally closed and one normally open.
One switch is for a drum forward signal to the PLC (Programmable Logic Controller); the other switch is
for an electrical interlock to the DRUM REVERSE push button.
g) DRUM REVERSE “Rear Panel” – PB4
This push button switch comprises of two (2) individual switches; one normally closed and one normally
open. One switch is for a drum reverse signal to the PLC (Programmable Logic Controller); the other
switch is for an electrical interlock to the DRUM FORWARD push button.
h) EMERGENCY STOP (E-Stop) “Rear Panel” – PB7
This push button switch is normally closed device and is located on the right rear panel of the dryer. Its
function is to shut down the control voltage to the dryer in the event it is pressed.
NOTE: The EMERGENCY STOP (E-Stop) WILL NOT disengage the sprinkler circuit power.
2. Rear Panel Control Problems
EMERGENCY STOP (E-Stop) Function
a) PROBABLE CAUSES;
1a) Rear panel disconnect plug
2a) Defective switch
3a) Wiring back to the main electrical enclosure