Cleveland oes-20.20 Manuale Utente

◊  The normally closed auxiliary contacts of K55.1, K55.2 and K56 open 

preventing the K57 contactor from energizing. 

•  If the combi fan is in the reduced setting 220 VAC is sent from terminal 6 on 

connector X11 through the normally closed auxiliary contacts of contactors 
K55.1, K55.2 and K56 to the coil of contactor K57 
◊  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. 

c  The 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. 

d  The 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 183 degrees F.