Section Two - User's Guide; Operation; Southbend - Southbend 171-40A Owner's Manual

OPERATION

INITIAL OPERATION CHECK: (Broiling Section)
The suffix "A" indicates that a centrifugal switch within the motor controls a gas solenoid. The unit cannot be operated without
power to the unit.
The suffix "D" indicates that there is no centrifugal switch or gas solenoid valve. These units employ the Southbend exclusive
burners which can operate with or without the blower. For optimum performance, however, the blower should be used:
I. When all gas and electrical connections have been checked out, proceed as follows to put the unit into operation:
A. Turn broiler burner valves to OFF.
B. Turn blower switch to OFF.
C. Turn on the main gas supply.
D. Turn on manual service valve located in inlet supply line in the blower compartment.
E. Suffix "A" models have a pair of burners and each has a pilot at its front. Light these 3 pilots. These pilots are
controlled by a small valve located behind the plug button, just below the left burner valve. The pilot flame should be
3/4" high; adjust if necessary.
F. For suffix "D" models, each burner has a pilot at its front. Light these 3 pilots. These pilots are controlled by a small
valve located behind the plug button. This button will be located in the very center at the top of the unit. The pilot
flame should be 3/4" high; adjust if necessary.
These pilots should burn continuously unless the broiler is to be completely shut down. When extinguished, the pilot gas
supply is NOT INTERRUPTED automatically. For complete shut down, the large manual service valve on the inlet gas
supply line, referred to in I-D above, must be turned to "OFF."
II. Press the blower switch to "ON."
A. For "A" suffix units:
1. The motor (blower) will start.
2. As it accelerates, its centrifugal switch will close.
3. This allows current to flow to the gas solenoid and the indicator light.
4. When the gas solenoid is energized, it opens, allowing gas to flow to the main burner valves.
5. When the red light glows, it indicates that the gas solenoid is "OPEN."
B. For "D" suffix units:
1. The motor (blower) and red indicator light will be energized immediately. The electrical circuitry does not
control the gas.
2. Gas is always available to the main valves, even with the motor off.
NOTE: Should an odor of gas be detected, check for leaks on all fittings within the blower compartment, using the
soapy water method. NEVER USE AN OPEN FLAME.
III. Turn the broiler burner valves to HIGH. As each valve is opened, immediately check ignition of burners.
When the burners ignite, a blue flame will cover the surface of the ceramics for 10-15 seconds. This haze will disappear
and within 30 seconds the ceramics will glow red. The flame on the surface of the ceramics should be barely visible, with
practically no blue haze. Should this condition not be obtained, i t may be necessary to regulate the air supply to the
manifold compartment. This air is supplied by a blower, with a shutter for regulation. There is NO primary air adjustment
on the burner itself (see ADJUSTMENTS).
INFRA-RED BROILERS
SECTION TWO — USER'S GUIDE
PAGE 2
Litho in U.S A.
8-88