Dacor DCM24B Service Manual page 38

17.Hold the edge of the rotor of the fan motor by using a pair
of grove joint pliers.
CAUTION:
* Make sure that no metal pieces enter the gap
between the rotor and the stator of the fan motor
because the rotor is easily shaven by pliers and
metal pieces may be produced.
* Do not touch the pliers to the coil of the fan motor
because the coil may be cut or injured.
* Do not disfigure the bracket by touching with the
pliers.
18.Remove the fan blade from the shaft of the fan motor by
pulling and rotating the fan blade with your hand.
19. Now, the fan blade will be free.
CAUTION:
* Do not reuse the removed fan blade because the
hole (for shaft) may be larger than normal.
20.Remove the two (2) screws and nuts holding the fan
motor to the fan duct.
21.Now, the fan motor is free.
INSTALLATION
1. Install the fan motor to the fan duct with the two (2)
screws and nuts.
2. Install the fan blade to the fan motor shaft according the
following procedure.
Coil
Groove joint pliers
Stator
Gap
Bracket
Rotor
Rear View
DOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVAL
1. Disconnect the power supply cord and then remove
outer case.
2. Open the oven door and block it open.
3. Discharge high voltage capacitor.
4. Remove the control panel assembly, refer to "Control
Panel Removal".
5. Disconnect wire leads from each of the switches and
fuse holder.
6. Remove two (2) screws holding latch hook to oven
flange.
7. Remove latch hook assembly from oven flange.
8. Push outward on the one (1) stopper tabs holding each
of switches place.
DOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT
1. Disconnect the power supply cord and then remove
outer case.
2. Open the oven door and block it open.
3. Discharge high voltage capacitor.
If the door sensing switch, secondary interlock switch and
monitor switch do not operate properly due to a
3. Hold the center of the bracket which supports the shaft
4. Apply the screw lock tight into the hole (for shaft) of the
5. Install the fan blade to the shaft of fan motor by pushing
CAUTION:
* Do not hit the fan blade strongly when installed
* Make sure that the fan blade rotates smooth after
* Make sure that the axis of the shaft is not slanted.
6. Reset the fan duct assembly to its place.
7. Install the tabs of fan duct to the rear cabinet and air
8. Install the magnetron air guide with the one (1) screw.
9. Reinstall the main harness and thermistor harness to
10.Reinstall the chassis support to the control panel back
11.Re-connect the wire leads to the fan motor, referring to
12.Re-install the fan motor grounding wire to the air guide
Shaft
These are the positions
Axis
that should be pinched
with pliers.
Stator
Rotor
Side View
9. Switch is now free.
Re-install
1. Re-install switch lever and each interlock switch in its
2. Re-connect wire leads to each switches and fuse holder.
3. Secure latch hook (with two (2) mounting screws) to
4. Make sure that the monitor switch is operating properly
misadjustment, the following adjustment should be made.
4. Loosen the two (2) screws holding latch hook to the oven
5. With door closed, adjust latch hook by moving it back and
35
of the fan motor on the flat table.
fan blade.
the fan blade with a small, light weight, ball peen hammer
or rubber mallet.
because the bracket may be disfigured.
installation.
guide.
each hole of the fan duct.
plate, waveguide and rear cabinet with the three (3)
screws.
the pictorial diagram.
(Right) with one (1) screw.
Table
At this time switch lever will be free, do not lose it.
place. The secondary interlock switch is in the lower
position and the door sensing switch is in the upper
position and the monitor switch is in the middle position.
Refer to pictorial diagram.
oven flange.
and check continuity of the monitor circuit.
chapter "Test Procedure" and Adjustment procedure.
cavity front flange.
forth, and up and down. In and out play of the door
allowed by the latch hook should be less than 0.5mm.
DCM24B
DCM24R
DCM24S
Shaft
Center of
bracket
Refer to