Repair manual

MT2136
4-1
CONVECTION BLOWER MOTORS
TO CHECK MOTOR ROTATION
1. Remove the back of the oven body and verify
proper motor rotation. (See FIGURE 1)
For motor placement, the direction of rotation is
viewed left to right from the oven's rear. Typically
the motor direction is referenced to the end of the
shaft (EOS). However due to the vertical positionĆ
ing of the motors in Blodgett Conveyor ovens, it is
more instructive to reference the end of the motor
(EOM) as looking from the rear of the oven. In
FIGURE 1 all directions are taken from EOM. The
correct rotation amperage draw is approximately 1
amp. If the measured amperage is less than .5,
check for proper motor rotation direction.
TO CHECK LOWĆLIMIT
1. Turn the oven on and let it heat up to approxiĆ
mately 200F (93C).
2. Shut the oven off. The blowers should come
back on in several seconds.
3. When the blowers shut off, turn the oven on.
If computer controlled press the ACT TEMP"
key to verify that the blowers shut off between
135F (57C) and 170F (77C). If the blowers
do not shut off refer to the Troubleshooting
section page 5-3.
For standard controls, turn the blower switch
to on to record the temperature. Adjust the hi/
lo board if necessary. See page 4-4 for temĆ
perature calibration procedure.
Motor #1
(CW)
(Side view)
(Top view)
Motor #2
(CCW)
Control
Box
Control
Box
Motor
#1
Motor
#2
BLOWER WHEEL ROTATION
Blower
Motor
Slinger
Cooling Blade
FIGURE 1