Cleveland Range OES-20.20, OEB-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. Steam production takes precedence in the combi mode.

•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 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 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.

dAfter the bypass probe (B5) is satisfied then the hot air heat circuit is energized to increase the cabinet temperature to the setting.

•220 VAC is sent from terminal 3 of connector X12 on the Control Board (A10) through the normally closed auxiliary contacts of K2 and K1 to the coil of Contactor K4 until the cabinet reaches the set temperature.

◊The contactor K4 closes and to legs of the 220 VAC is sent to the 18 KW element (E4)

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

•220 VAC is sent from terminal 7 of connector X11 on the Control Board (A10) to the coil of Contactor K44 until the cabinet reaches the set temperature.