Repair manual

CTB and CTBR
4-1
THERMOSTAT
BULB AND CAPILLARY THERMOSTAT
For units manufactured prior to August 1984
1. Turn the mode selector/power switch to COOK
ONLY.
2. Toggle the blower switch to ON.
3. Toggle the cool down switch to MANUAL.
4. Place a pyrometer thermocouple at the center
of the thermostat bulb or reliable mercury therĆ
mometer on the middle shelf 6" from the front
edge and in the center of the shelf.
5. Turn the thermostat dial to 350_F (177_C)..
6. When the red indicator light on the control panĆ
el goes out, check the thermometer or pyromĆ
eter to determine oven temperature.
If this reading is within 10_F (6_C) of the therĆ
mostat setting, do not change the thermostat.
If this reading differs more than 10_F (6_C)
from the thermostat setting recalibrate the
thermostat.
For units manufactured after August 1984.
1. Turn the selector switch to COOK.
2. Place a pyrometer thermocouple at the center
of the thermostat bulb or reliable mercury therĆ
mometer on the middle shelf 6" (15 cm) from
the front edge and in the center of the shelf.
3. Turn the thermostat dial to 350_F (177_C). Let
the oven heat for at least 1/2 hour.
4. When the red indicator light on the control panĆ
el goes out, check the thermometer or pyromĆ
eter to determine oven temperature. If this
reading is within 10_F (6_C) of the thermostat
setting, do not change the thermostat. If this
reading differs more than 10_F (6_C) from the
thermostat setting recalibrate the thermostat
as follows. See FIGURE 16 page 4-2.
A.) Loosen the set screws in the thermostat
knob. Pull the knob forward.
B.) With a screwdriver, turn the calibration
screw in the center of the thermostat stem
either clockwise to lower the temperature
or counterĆclockwise to raise the temperaĆ
ture.
Fluid Filled
Capillary
Thermostat
Bulb Clip
Thermocouple
Pyrometer
Lead
FIGURE 15