Blodgett S1820G - Manual (Page 27)

SECTION 3
OPERATION
D. Temperature Controller
The temperature controller is a solid-state, PID type to
maintain the operator-set temperature. The temperature
controllercontinuousiy monitors the oven temperature and
turns on the modulating gas valve. The heat is on for the
time required to maintain a constant oven temperature.
The temperature controller contains a low-limit switch
which allows the oven to cool down to 200°F {93°C) before
shutting off the blower. A high-limit indication (ALM1 ) will
appear on the display if the oven reaches 650°F (343°C).
MEASURING CONVEYOR SPEED.
See Figures 3-4 and 3-5.
To check conveyor speed, place a product item at the
entrance end of baking chamber as shown. Time how long
it takes for the leading edge of the item to go from the
entrance end of the baking chamber to the exit end. This
should be the conveyor speed shown on the conveyor
speed digital control.
NOTE: in Figures 3-4 and 3-5, the oven shown is with the
conveyor running right to left.
WARNING
Possibility of injury from rotating parts and
electrical shock exist in this oven.
Never disassemble or clean the oven with the
blower switch or any other part of the oven
turned “ON” or “I”. Turn “OFF” or “O” and
lockout or tagout all electrical power to the
oven before attempting to clean or service
this oven.
MIN : SEC
lAI
M
n n '
u u *
n n
u u
o
o
o
I
I
Minutes
\
Seconds
Figure 3-3. Conveyor Speed Digital Control
Figure 3-4. Product at entrance end of baking
chamber - BEGINNING OF TIMING
Figure 3-5. Product at exit end of baking
chamber-END OF TIMING
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