Hood Fan Thermostat Removal; Cooling Fan Removal - Frigidaire GLBM188HB Service Manual

[10] HOOD FAN THERMOSTAT (60ºC ON) REMOVAL
1. Disconnect the power supply cord, remove the oven from wall and
remove outer case (Refer to procedure of "Removal of Oven from
Wall" and "Outer Case Removal".
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Disconnect the wire leads from the hood fan thermostat (60°C
ON).
5. Remove one (1) screw holding the thermostat (60°C ON) to the
right base plate.
6. Remove the hood fan thermostat (60°C ON) from the right base
plate.
7. Now, the hood fan thermostat (60°C ON) is free.
[11] COOLING FAN MOTOR REMOVAL
1. REMOVAL
1. Disconnect the power supply cord, remove the oven from wall and
remove outer case (Refer to procedure of "Removal of Oven from
Wall" and "Outer case Removal".)
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove two (2) screws holding the chassis support right to the rear
and face of the oven cavity flange.
5. Remove the one (1) screw holding the noise filter assembly to the
fan duct.
6. Disconnect the wire leads from the fan motor.
7. Disconnect the high voltage wire leads of the high voltage rectifier
assembly from the magnetron.
8. Disconnect the filament lead of the transformer from the magne-
tron.
9. Remove the one(1) screw holding the hood duct to the fan duct
and remove the one (1) screw holding the oven cavity top plate to
the fan duct.
10.Remove the one (1) screw holding the right base plate to the fan
duct and remove the fan duct assembly
11.Remove the fan blade from the fan motor shaft according the fol-
lowing procedure.
12.Hold the edge of the rotor of the fan motor by using a pair of groove
joint pliers.
CAUTION: * Make sure that any pieces do not enter the gap
between the rotor and the stator of the fan motor.
Because the rotor is easy to be 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 damaged.
* Do not disfigure the bracket by touching with the
pliers.
13.Remove the fan blade from the shaft of the fan motor by pulling and
rotating the fan blade with your hand.
14.Now, the fan blade will be free.
CAUTION: Do not re-use the removed fan blade because the hole
(for shaft) may be larger than normal.
15.Remove the two (2) screws holding the fan motor to the fan duct.
16.Now, the fan motor is free.
2. INSTALLATION
1. Install the fan motor to the fan duct with the two (2) screws.
2. Install the fan blade to the fan motor shaft according to the following
procedure.
3. Hold the center of the bracket which supports the shaft of the fan
motor on the flat table.
4. Apply the screw lock tight into the hole (for shaft) of the fan blade.
5. Install the fan blade to the shaft of fan motor by pushing the fan
blade with a small, light weight, ball peen hammer or rubber mallet.
CAUTION: * Do not hit the fan blade strongly when installed
because the bracket may be transformed.
* Make sure that the fan blade rotates smoothly after
installed.
* Make sure that the axis of the shaft is not slanted.
6. Install the fan duct to the oven cavity, base plate right and hood
duct with the three (3) screws.
7. Connect the high voltage wire leads with high voltage rectifier from
the magnetron, referring to the pictorial diagram.
8. Connect filament lead of the transformer from high voltage capaci-
tor, referring to the pictorial diagram.
9. Connect high voltage wire from capacitor, referring to the pictorial
diagram.
10.Connect the wire leads to the fan motor, referring to the pictorial
diagram.
11. Refer to procedure of "Outer case Removal". And reverse their pro-
cedure. And re-install the outer case.
Bracket
Shaft
Axis
Stator
Rotor
Side View
11 – 4
Page 32
GLBM188HB
Thermostat (60ºC ON)
Right Base plate
Coil
Groove
joint pliers
Stator
Gap
Rotor
Rear View
These are the positions that
should be pinched with pliers.
Shaft
Table
Center of
bracket