Sharp R-1880LS, Service Manual

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14
R-1880LS/LST
detected vapors and initiated a sensor cooking cycle.
This is because the operation of the convection fan
would interfere with the AH sensor's vapor detection.
VENTILATION METHODS HOT AIR EXHAUST
1. VERTICAL VENTING
For this venting method, hot air rising from the conventional
range below is drawn in by the hood fan motor through the
grease filters at the right and left sides of the base cover, up
through the right and left side intake ducts, then discharged
vertically at rear center top of the oven, into the customer's
vent system.
. HORIZONTAL VENTING
The air handing is same as VERTICAL VENTING except
that the final air discharge is directed horizontally out from
the top rear of the oven into the customer's vent system.
3. RE-CIRCULATION (INSIDE VENTING)
The air handing is same as VERTICAL VENTING except
that the final air discharge is directed horizontally through
the upper front of the oven into the kitchen. IN this case, the
accessory charcoal filter lit RK-0 must be provided to filter
the air before it leaves the oven.
CONVECTION
MOTOR
THERMISTOR
Sensing
Voltage
ON
OFF
ON
OFF
ON
OFF
0 2 24 30 64 (sec.)
3 sec.
Sensing the voltage across the temperature measurement circuit.
6 sec.
3 32 (sec.)
: AIR FLOW
GREASE
FILTER
HOOD
INTAKE
DUCT R
HOOD FAN MOTOR
TO DUCT
: AIR FLOW
GREASE
FILTER
HOOD
INTAKE
DUCT R
HOOD FAN MOTOR
TO DUCT TO DUCT
: AIR FLOW
HOOD
INTAKE
DUCT R
HOOD EXHAUST
LOUVER
HOOD FAN MOTOR
CHARCOAL
FILTER