Middleby Marshall PS500 - Manual (Page 15)

15
ENGLISH
CAUTION
In case of power failure, turn all switches to the “OFF” ("O")
position, open the oven window, and remove the product.
After the power has been restored, perform the normal
startup procedure.
On gas ovens, the burner will not operate and gas will not
flow through the burner without electric power. No
attempt should be made to operate the oven during a
power failure.
7. (Gas ovens only) If the "RE-
SET" ( ) switch illumi-
nates, the gas burner did
not light. Press the "RE-
SET" (
) switch (repeat-
edly if necessary) to at-
tempt to light the burner.
A. DAILY STARTUP PROCEDURE
3. Turn the "CONVEYOR"
( ) switch to the “ON”
("I") position.
4. If necessary, adjust the
conveyor speed setting
by pressing the or
pushbuttons on the con-
veyor speed controller to
change the displayed
bake time.
6. Turn the "HEAT" ( )
switch to the "ON" ("I")
position, and wait for the
"HEAT ON" light to turn
on.
9. (Optional) Press the Tem-
perature ( ) key to show
the Actual Temperature
in the display, and wait
for the "ACTUAL TEMP"
light to turn on. This al-
lows you to monitor the
oven temperature as it
rises to the setpoint.
1. Turn the "HEAT" ( ) and
"BLOWER" ( ) swit-
ches to the "OFF" ("O")
position. Note that the
blowers will remain in op-
eration until the oven has
cooled to below 93°C.
II. NORMAL OPERATION - STEP-BY-STEP
8. Wait for the oven to heat to the setpoint temperature. Higher
setpoint temperatures will require a longer wait. The oven
can reach a temperature of 232°C in approximately 5
minutes.
3. Open the window to allow the oven to cool faster.
2. Make certain that there
are no products left on
the conveyor inside the
oven. Turn the "CON-
VEYOR" ( ) switch to
the "OFF" ("O") position.
SECTION 3 - OPERATION
2. Turn the "BLOWER" ( )
switch to the “ON” ("I")
position.
+
wait
for
• Press the Up Arrow
and Down Arrow
Keys as necessary
to adjust the set-
point.
or
5. Adjust the temperature
controller to a desired set
temperature, if neces-
sary.
•
Press the Set Point
and Unlock keys at
the same time. Wait
for the "SET PT" light
to turn on.
wait
for
B. DAILY SHUTDOWN PROCEDURE
10. Allow the oven to preheat for 10 minutes after it has reached
the set point temperature.
wait
for
+
4. After the oven has cooled and the blowers have turned off,
switch the circuit breaker/fused disconnect to the off posi-
tion.
1. Check that the circuit breaker/fused disconnect is in the on
position. Check that the window is closed.
or
NOTE: If the burner does not light within 15 minutes, the
oven enters a safety lockout mode that disables the "RE-
SET" (
) switch. If this occurs, turn the "HEAT" ( ),
"BLOWER" ( ), and "CONVEYOR" ( ) switches to the
"OFF" ("O") position. Wait for AT LEAST FIVE MINUTES.
Then, repeat the Daily Startup procedure.