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E.
INTELLISWITCH TEMPERATURE SENSOR
REPLACEMENT
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.
Disconnect the temperature sensor from the control board
by locating the pin connection marked J3 and labeled TEMP.
Grasp the socket and carefully pull away from the control
board.
6.
Remove the wiring tray cover.
7.
Cut necessary cable ties.
8.
Remove the temperature sensor.
9.
Install new temperature sensor and all necessary cable
ties.
10. 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.
11. Reinstall remaining components in reverse order.
F.
UNIT MOUNTED ROTARY SWITCH REMOVAL
The variable speed switch can be removed directly from the
bottom of the unit.
1.
Disconnect power to the unit.
2.
Firmly grip the knob on the switch and gently pull to re-
move.
3.
Use a phillips head screwdriver to remove the two screws
from the name plate.
4.
Remove the two phillips head screws holding the switch to
the unit.
5.
Remove the switch by pushing it into the unit and rotating
it gently end over end and sliding it out of the opening.
6.
Reinstall in reverse order of removal.
G . FAN AND MOTOR REMOVAL
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 transverse by removing the four(4)
washer head bolts.
6.
Rotate the speed sensor bracket away from the motor by
removing the phillips screw farthest from the motor and
loosening the second phillips screw. Do not remove the
speed sensor from the bracket.
7.
Unplug motor harness from motor and remove necessary
wiring.
8.
Using a
1
/
" Allen wrench, loosen each set screw attach-
8
ing fan(s) to motor.
9.
While holding the motor in place, loosen and remove the
motor clips.
10. Slide the fans toward the motor so that the ball bearings on
the outer fan shaft are exposed.
11. Slowly roll the motor out of the motor mount cradle for-
ward and down. The hubs of the fans are flexible enough
to allow the motor to move before the fans' outer ball bear-
ings pull out of the unit.
12. If the unit equipped with an intelliswitch, remove the trig-
ger bar from the motor shaft with a 5/64" allen wrench.
13. Install the trigger bar on the replacement motor so that it is
not closer than 0.030" to the motor bearing cap (including
shaft movement).
14. Ensure the trigger does not contact the speed sensor.
Maximum gap distance between trigger and sensor is 5/
64" (2mm).
15. Reinstall in reverse order of removal.
H. REPLACEMENT OF ELECTRIC HEATER ELEMENT
1. Disconnect power to the unit, remove the intake grille by
removing the locking screws on each end of the unit. Lift
the intake grille up and away from the unit.
2. Remove the bottom access panel by removing the phillips
head screws on the bottom of the unit.
3. Remove and mark all wires from damaged element.
4. To remove damaged element from unit, drill out rivets and
remove screws.
5. Install new element and connect all wires.
6. Reinstall cover and intake grille.
- 10 -
5
/
" hex
16
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