Cleveland Range OEB-20.20, OES-20.20 manual K50 contactor closes and the motor turns CW

•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 steam generator circuit is energized

•220 VAC is sent from terminal 4 of connector X12 on the Control Board (A10) through the normally closed auxiliary contacts of K4 to the coil of Contactor K1 until the cabinet reaches the set temperature and the bypass probe (B5) senses 162 degrees F.

◊The contactor K1 closes and 220 VAC is sent to the 9.4 KW element (E1)

◊The normally closed auxiliary contact of K1 opens preventing the Hot Air Contactor K4 from energizing

•220 VAC is sent from terminal 8 of connector X11 on the Control Board (A10) through the normally closed auxiliary contacts of K44 to the coil of Contactor K2 until the cabinet reaches the set temperature and the bypass probe (B5) senses 162 degrees F.

◊The contactor K2 closes and 220 VAC is sent to the 6.27 KW element (E2)

◊The normally closed auxiliary contact of K2 opens preventing the Hot Air Contactor K4 from energizing

◊If the reduced power option is chosen then the K2 Contactor is not energized.

•When the compartment temp is reached, the steam heat circuit is controlled by the B4 probe in the bypass tube.

•NOTE: If the set temperature is above 212 degrees F the hot air circuit will be energized (after the by pass probe is satisfied) until the compartment setting is reached. The steam circuit always takes precedence.

dWhen 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.

eWhen the timer counts to 0 or the core temp probe (B10) reaches the set amount the cycle ends and the steam generator reverts to the standby temperature of 190- degree F.