Chicago Dryer King Edge, Instruction Manual

Page: 196 / 290

3024-016c King Edge
C-14
IV. TESTING
The testing function should only be used to see
and hear the operation of the unit to verify proper
functioning or as an aid during troubleshooting.
When TEST mode is active, stay clear of
moving parts. Watch the unit from a safe distance.
Do not touch any part of the unit when it is in
TEST mode. Serious injury may result.
WARNING
Never touch any part of the
machine while it is running.
Serious injury could result.
Only trained repair personnel
should work on this machine.
Always think carefully around
moving machinery.
NOTE: Work with another
person. The “buddy system” is
the safest system.
When a test is started, the message screen
displays an output number for each device under
test. There are two types of outputs, either 24VAC
or isolated transistor.
24VAC Outputs
Note that all 24 VAC outputs are fused.
Make sure that the LED is lighting on the
main controller board MPC1 during the
test. This shows that the main controller
is functioning properly.
Make sure that the corresponding LED
is lighting on the output card. If the LED
lights on the main controller, but not on the
output card, replace the output card.
1.
2.
With the machine off, check the continuity
of the fuse for this output and replace it if
necessary. Make sure the fuse holder has
proper holding pressure.
Check wiring to device and device itself
for failures. Repair or replace these de-
vices as necessary.
Isolated Transistor Outputs
The isolated transistor is used to activate
certain controls such as a 24VDC clutch driver, an
inverter, a motor driver card, or other device. The
transistor will turn on an input (0VDC) to these
subsequent devices. When not activated, a device
input may read 5VDC, 12VDC, or 24VDC. If a
device does not work during the test function,
follow the steps below.
Make sure that the LED is lighting on the
main controller board MPC1 during the
test. This shows that the main controller
is functioning properly.
To check that a particular control is operat-
ing properly, turn off the test mode. Check
the following:
Voltage is available for the output side
of the control
If there is a push-button on the card,
push it to activate it.
If the control is operating properly, check
the wiring between the output card and
control device. Inspect the push in terminals
for proper alignment and tension. Repair
any faulty wiring terminals. If the wiring
terminals and control device are working
correctly, replace the output card.
3.
4.
1.
2.
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3.