The K57 contactor closes

(a)220 VAC is sent through the Q57.1 thermal overload to the motor and the upper motor turns at a reduced speed.

(b)220 VAC is sent through the Q57.2 thermal overload to the motor and the lower motor turns at a reduced speed.

The normally closed auxiliary contacts of K57 open preventing the K55 and K56 contactors from energizing.

For the first 2 minutes 220 VAC is sent from terminal 4 on connector X11 through the normally closed auxiliary contacts of contactor K5 to the K50 contactor coil

K50 contactor closes and the motor turns CW

The normally closed auxiliary contacts on K50 open preventing the K5 contactor from energizing.

For 15 seconds the motor is de-energized and allowed to coast.

For the next 2 minutes 220 VAC is sent from terminal 3 on connector X11 through the normally closed auxiliary contacts of contactor K50 to the K5 contactor coil

K5 contactor closes and the motor turns CCW

The normally closed auxiliary contacts on K5 open preventing the K50 contactor from energizing.

NOTE: If the door switch (S7) opens by the door opening, then the fan circuit is de-energized. Then the motor will be pulsed in the opposite direction to “break” the fan. This is to stop the fan quicker for the operator.

cThe hot air heat circuit is energized

220 VAC is sent from terminal 3 of connector X12 on the Control Board (A10) to the coil of Contactors K41 and K61 until the cabinet reaches the set temperature as sensed at probe B6.

The Contactors K41 and K61 close and he 220 VAC is sent to the outer elements (E41 and E61)

220 VAC is sent from terminal 7 of connector X11 on the Control Board (A10) to the coil of Contactors K42 and K62 until the cabinet reaches the set temperature as sensed at probe B6.

The Contactors K42 and K62 close and 220 VAC is sent to the inner elements (E42 and E62)

If the reduced power option is chosen then Contactors K42 and K62 are not energized.

dThe steam circuit is energized.

220 VAC is sent from terminal 4 of connector X12 on the Control Board (A10) to the coil of the Y3 solenoid allowing water to be thrown against the element until the bypass probe (B5) senses 154 degrees F.

eWhen the condensate box is heated to 140 degrees F at the B3probe, 220 VAC is sent from terminal 5 of connector X12 to the condenser valve (Y1) until the temperature drops.

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Cleveland Range OES-20.20, OEB-20.20 manual

OES-20.20, OEB-20.20 specifications

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