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on back of display board with 8-pin header on control
board. Push gently and firmly (confirming all pins are
inserted) until face plate rests against mounting bracket.
Insert and tighten two phillips head screws.
Note: Align faceplate mounting holes with threaded
mounting holes on unit before pushing faceplate onto pins.
This should help to align the pins with the socket.
B. INTELLISWITCH CONTROL BOARD REMOVAL OR
REPLACEMENT
CAUTION: Do not expose the bare board to static electricity,
water, extreme heat or extreme moisture.
NOTE: The Intelliswitch Control Board may be removed
without removing the bottom access cover or transverse.
However removal of the bottom access cover and transverse
will simplify the process.
1.
Set Intelliswitch mode to off.
2.
Disconnect power to the unit.
3.
Remove the two phillips head screws from the Intelliswitch
display faceplate.
4.
Remove the faceplate from the control board by grasping
it firmly and gently pulling it away from the unit.
5.
Mark and remove all wires connected to the control board.
6.
Remove the two phillips head mounting screws that attach
the control board to the unit frame.
7.
Carefully maneuver the control board out of the unit by
sliding straight down. Avoid contact between board
components and the motor mount.
8.
Remove the two phillips head screws that attach the control
board to the mounting bracket.
9.
Attach mounting bracket to the new control board with
existing screws.
10. Install new control board into the unit by carefully sliding
the two tabs at the top of the control board into the two
corresponding slots in the unit frame and fasten with flat
head screws. Note: when the tabs of the board hit the unit
frame tip the board up and angle the tabs into the slots.
11. Reconnect all wires to the control board.
12. Reinstall display faceplate by aligning 8-pin socket holes
on back of display board with 8-pin header on control
board. Push gently and firmly (confirming all pins are
inserted) until face plate rests against mounting bracket.
Insert and tighten two phillips head screws.
NOTE: Align faceplate mounting holes with threaded
mounting holes on unit before pushing faceplate onto pins.
This should help to align the pins with the socket.
C. INTELLISWITCH SPEED SENSOR REPLACEMENT
1.
Set Intelliswitch mode to off.
2.
Disconnect power to the unit
3.
Remove the intake grille by removing the locking screws
on each end of the unit. Lift the intake grille up and then
away from the unit.
4.
Remove the bottom access panel by removing the phillips
head screws on the bottom of the unit.
5.
Remove the two phillips head screws from the Intelliswitch
display faceplate.
6.
Remove the faceplate from the control board by grasping
it firmly and gently pulling it away from the unit.
7.
Disconnect the speed sensor from the control board by
locating the pin connection marked J2 and labeled
PROXIMITY. Grasp the socket and carefully pull away
from the control board.
8.
Remove the 13 mm hex nut and washer closest to the fan
from the sensor.
9.
Remove the sensor.
10. Connect the new sensor to the control board, secure all
loose wires from rotating parts.
11. Install new sensor into mounting bracket. Use the 13 mm
nuts to position the tip of the sensor a maximum of 5/64"
(2 mm) away from the rotating trigger located on the motor
shaft. When the unit is energized, the LED on the back of
the sensor will illuminate when the trigger passes if the
correct distance has been set.
CAUTION: Do not mount the speed sensor too close to
the trigger, the sensor will be ruined if it is struck by the
trigger.
12. Reinstall display faceplate by aligning 8-pin socket holes
on back of display board with 8-pin header on control
board. Push gently and firmly (confirming all pins are
inserted) until face plate rests against mounting bracket.
Insert and tighten two phillips head screws.
NOTE: Align faceplate mounting holes with threaded
mounting holes on unit before pushing faceplate onto pins.
This should help to align the pins with the socket.
13. Reinstall remaining components in reverse order of
removal.
D. INTELLISWITCH SPEED SENSOR ADJUSTMENT
1.
Set Intelliswitch mode to off.
2.
Disconnect power to the unit
3.
Remove the intake grille by removing the locking screws
on each end of the unit. Lift the intake grille up and then
away from the unit.
4.
Remove the bottom access panel by removing the phillips
head screws on the bottom of the unit.
5.
The speed sensor is held in with two 13 mm hex nuts and
a star washer.
6.
Use the 13 mm nuts to position the tip of the sensor a
maximum of 5/64" (2 mm) away from the rotating trigger
located on the motor shaft. When the unit is energized,
the LED on the back of the sensor will illuminate when the
trigger passes if the correct distance has been set.
CAUTION: Do not mount the speed sensor too close to
the trigger, the sensor will be ruined if it is struck by the
trigger.
7.
Reinstall remaining components in reverse order of
removal.
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