Chicago Dryer Edge MAXX, Instruction Manual

Page: 178 / 288

Repair Edge MAXX
7-46
Wall Photosensor Sensitivity
Adjustment
The following procedure applies to the upper
(PE9, PE21) and lower (PE10, PE22) left and
right wall sensors only.
CAUTION
Do not adjust sensitivity
on any other photosensors
unless specifically instructed
do so by the factory service
department.
As a general rule, it should only be necessary
to adjust the sensitivity of these photosensors
when they’re replaced.
If that is the case, follow this procedure before
executing the Checking the Photosensor’s
Setting portion of the Photosensor Replacement
procedure.
Required Tools
white cardboard
Perform only when the unit is
RUNNING.
Use extreme caution.
Turn power OFF at the main disconnect
switch.
Take a small rectangular piece of white
cardboard and place it
in between
the
spreader belts (Figure 7-58, A) and di-
rectly in the sight of sight from the sensor
to be adjusted (Figure 7-58, B, 7-59, A).
Follow Steps 2 to 8 of the Checking the
Photosensor’s Setting
procedure, but
ignore any error message that appears in
the CHI Panel display.
Look at the sensor to be adjusted. Both its
yellow and green LEDs should be lit.
1.
2.
3.
4.
Press the small button at the top of the
photosensor (Figure 7-57, B) and hold it
for about 3 seconds until the green and
yellow LEDs are alternately flashing.
Remove the white cardboard from the
scanner’s view (Figure 7-57, C).
5.
6.
Figure 7-58: The white cardboard must be between
the spreaders belts to achieve an
accurate setting.
A
B
Figure 7-59: The white cardboard must be between
the spreaders belts to achieve an
accurate setting.
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