Blodgett MT3870, Service And Repair Manual

Page: 31 / 69

OPERATION
3-2
PROGRAMMING PROCEDURES
Programming the Cook Time:
1. Press the PROGRAM/ENTER key (8).
2. Press the TIME key (7). The display reads
PROGĆ? SET TIMEĆ? _ _ _ _.
3. Use the NUMERIC keys (3) to enter the desired
cook time. The display will read the numbers
as they are entered. If an error is made, press
the CLEAR key (4) and reĆenter the number.
4. Press the PROGRAM/ENTER key (8) a second
time to lockĆin the new time. The new cook time
will be stored in the computer's memory.
Programming the Temperature:
1. Press the PROGRAM/ENTER key (8).
2. Press the SET TEMP key (5). The display reads
PROGĆ? SET TEMPĆ? _ _ _ _ F.
3. Use the NUMERIC keys (3) to enter the desired
temperature set point. The control displays the
numbers as they are entered. If an error is
made, press the CLEAR key (4) and reĆenter
the number.
4. Press the PROGRAM/ENTER key (8) a second
time to lockĆin the new temperature. The new
temperature setpoint will be stored in the comĆ
puter's memory.
Operation at the Programmed Settings:
1. Press and hold the ON/OFF key (2).
2. The FAN and HEAT status lamps (9) light. The
fans begin to run. The heat rises to the temperĆ
ature setting stored in the computer's memory.
The conveyor belt begins to travel at the timed
speed stored in memory.
3. The display will flash WAIT LOW SET TIME
mmss until the programmed bake temperaĆ
ture is reached. The HEAT lamp (9) will remain
lit until the oven reaches the temperature set
point.
4. The display reads READY and the HEAT lamp
(9) goes out.
5. The oven is now ready to accept product.
6. Press and hold the ON/OFF key (2) to turn the
oven off. The fans continue to run while the
oven cools to a safe temperature.
DISPLAY INFORMATION
WAIT LOW - indicates that the present oven
temperature is lower than the set point temperĆ
ature. When the oven reaches the set point
temperature the display changes to READY .
READY - indicates that the oven is ready to acĆ
cept product.
SET TIME mmss - indicates the current
cook time setting.
HIGH TIME - indicates that the temperature
is well above the set point. This usually occurs
when moving from a higher āto a lower temperaĆ
ture. Wait until the display reads ready before
loading product.
HIGH TEMP LIMIT - indicates that the oven
temperature exceeds the high limit from the
2nd level program. The Over Temperature
Alarm buzzer will sound. Shut the oven off and
wait for the unit to cool down.
HIGH TEMP PANEL - indicates that the conĆ
trol area reaches an excessive temperature.
Shut the oven off and wait for the unit to cool
down.
PROBE OPEN PROBE SHORT - indicates
that the temperature sensor has failed. The
Alarm buzzer sounds. Shut the oven off and
contact a service representative.