Cleveland 21-CET-8 Service Manual

Statement of Responsibilities

This document is for use by experienced and trained Qualified Cleveland Range, LLC Authorized Service Representatives who are familiar with both the safety procedures, and equipment they service.

Cleveland Range, LLC assumes no liability for any death, injury, equipment damage, or property damage resulting from use of, improper use of, or failure to use the information contained in this document.

Cleveland Range, LLC has made every effort to provide accurate information in this document, but cannot guarantee that this document does not contain unintentional errors and omissions.

The information in this document may be subject to technical and technological changes, revisions, or updates.

Cleveland Range, LLC assumes no liability or responsibility regarding errata, changes, revisions, or updates.

Qualified Cleveland Range, LLC Authorized Service Representatives are obligated to follow industry standard safety procedures, including, but not limited to, OSHA regulations, and disconnect / lock out / tag out procedures for all utilities including steam, and disconnect / lock out / tag out procedures for gas, electric, and steam powered equipment and / or appliances

All utilities (gas, electric, water and steam) should be turned OFF to the equipment and locked out of operation according to OSHA approved practices during any servicing of Cleveland Ran ge equipment

Qualified Cleveland Range, LLC Authorized Service Representatives are obligated to maintain up-to-date knowledge, skills, materials and equipment.

Cleveland Range, LLC

1333 East 179th St., Cleveland, Ohio, U.S.A. 44110

Ph: 1-216-481-4900 Fx: 1-216-481-3782 Visit our Web Site at www.clevelandrange.com

CLEVELAND RANGE 21CET8

SEQUENCE OF OPERATIONS

Mechanical Timer

1. Supply power is sent to the primary of the main transformer.

• 115 VAC is sent from the secondary of the main transformer to the on/off rocker,

2. To turn the unit on, depress the red on/off rocker switch.

• 115 VAC is sent to the red power light.

• 115 VAC is sent to normally open drain valve closing it.

• 115 VAC is sent to H and N on the water level board

3. With the water level board energized and no water in the generator

• 5 seconds later 115 VAC is sent from the FILL terminal to the fill solenoid.

• The fill solenoid opens and the generator fills through the drain valve.

• The water fills to the low probe shorting it to ground

• 115 VAC is sent to the heat standby timer which will energize 3 seconds every 4

minutes to maintain heat while unit is idle

• 115 VAC is sent from the HEAT terminal to the timed manual switch.

4. When the timed/manual switch is in the timed position and time is on the timer

• 115 VAC is sent from the timer to the R2 relay coil

• R2 relay energizes closing the R2A and R2B contacts

• 115VAC is sent through the now closed R2B contacts to the timer motor

• 115 VAC is sent through the now closed R2A contacts through the door switch to the

normally closed contacts of the high limit switch.

• 115 VAC is then sent through the high limit to the coil of condensate solenoid

• The condensate solenoid opens spraying cold water down the compartment drain.

• 115 VAC is also sent through the high limit to the coil of the contactor.

• 115 VAC is sent to the clean light timer.

• When the clean light timer times down 115 VAC is sent to the clean light switch.

• When the clean light switch is depressed the clean light timer is reset.

5. When the contactor coil is energized supply voltage is sent to both of the elements.

• The elements are energized and the water is heated to steam.

• Steam is directed to the cooking compartment.

6. When the timer times out

• 115 VAC is sent to the 3 second timer and then to the buzzer for 3 seconds.

• 115 VAC is removed from the R2 relay.

• R2A contacts open de energizing the heat circuit

• R22B relay contacts open removing the 115 VAC from the timer motor

7. When the water level reaches the high probe then 115 VAC is removed from the FILL

terminal and the fill solenoid is turned off.

8. After the water level drops below the high probe for 5 seconds 115 VAC is sent to the FILL

terminal again.

9. The red on/off switch is depressed and the unit is turned off.

• 115 VAC is removed from the heat and timer circuit.

• 115 VAC is removed from the normally open drain valve allowing the steamer to drain.

• 115 VAC is sent to the 3-minute timer and the fill solenoid is energized for 3 minutes

flushing the drain.

3

L106347 M

CONNECTION

CUSTOMER

MANUAL

SWITCH

POWER

BLOWDOWN OPTION

C NC

1

R1

2

ELECTRO-MECHANICAL

TIMER

HEAT STANDBY

TIMER

INTERMITTENT

BLOWDOWN

TIMER

3

1

NO C

2

R1

( STACKED UNITS OPTION )

DRAIN VALVE

COOLING FAN

SWITCH

HI LIMIT

CONTACTOR

CONDENSER

VALVE

MOTOR

C NO

3 SEC TIMER

R2B

TIMED TIMEDMANUAL

3 MIN TIMER

3

1

4

87

23

1

5

6

2

POWER ON

R

FILL VALVE

H

N

HEAT

FILL

XL

WATER

BOARD

HI

NO

DESCALE INDICATOR

& RESET SWITCH

C

NC

C NO

R2A

NO

C

(SCS OPT)

SWITCH

DOOR

( OPT )

1

R1

R2

3

2

BUZZER

PROBES

TO

BLK

DESCALE

TIMER

RESET CIRCUIT

BREAKER

L

A

X1

L

120V

X2 SECONDARY

WHT

3Ø

L3

L2

L1

TB

FU

3Ø

CONTACTOR

H4

H1 PRIMARY

HEATING ELEMENTS

CONNECTION

CUSTOMER

CONNECTION

1Ø

L1

L2

TB

1Ø

W/ NEUTRAL

L3

N

CUSTOMER

380/415V

3Ø

L2

L1

STEAMCRAFT 3.1 MECHANICAL TIMER (PROBE)

TB

FU FU

DRYING ELEMENT

FU FU

CONTACTOR

TO 1Ø IS NOT PERMITTED

FIELD CONVERSION FROM 3Ø

HEATING ELEMENTS

DRYING ELEMENT

BLK

3

20

2 1 BLK

LT BLU

19

PNK

WHT/BLK

3

4

NC

WHT

1

NOC

WHT/GRA

3 2 1

ORN

WHT/BLK

GRA

23

R2

WHT/RED

ORN/BLK

BLK

2

BLU

WHT

TAN TAN

RED

LT BLU

18

WHT/BLU

LT BLU

SINGLE PHASE WIRING CONFIGURATION

TO

FUSE BLOCK

L1 L2 L3

TERMINAL BLOCK

CUSTOMER

CONNECTION

WHT/BLK

WHT/BRN

17

BLU

BLK

REMOVED W / OPT

DOOR SWITCH ( SCS )

YEL

TAN

WHT/BLK

WHT

BLK

5

3

2

1

4

6

7

58

BRN

21

BRN

BLK

DRYING ELEMENT BLK

HEATER

RED

ELEMENT

WHT DRYING ELEMENT BLK

HEATER

RED

ELEMENT

WHT

STEAMCRAFT 3.1 MECHANICAL TIMER (PROBE)

WHT

BLK

WHT

BLK

BLK RED GRN

16

RED

BLK

15

HEAT FILL

YEL

C

HI

XL

NH

TAN

RED

WHT

JUMPER POSITION

FOR 480 V

OPERATION

H4 H3 H1

H2

WHT/BLU

26

BLK

YEL

TIMED/MANUAL SWITCH

6

22

7

N

6

3

WHT 2 1

INTERMITTENT BL OWDOWN OPTION

WHT

3 2

YEL

BLK1

WHT

3

RED

2

RED

1 RED

TAN

RED

9

N

( TO HIGH LIMIT )

BLK

WHT

RED

BLU

WHT/BLK

8

7

23

RED GRN

COND

BLK

BRN

TIMED/MANUAL SWITCH

( THRU SCS )

BLK

( TO COND SOL )

BRN

RED

BLU

RED

WHT/BRN

10

GRN

8

WHT/BLU

FILL

19993 - POWER SWITCH

1

104224 - TIMED / MANUAL SW

2

20478 - 3 MIN TIMER

3 4

19994 - DESCALE IND RESET SWITCH 106911 - DESCALE TIMER

5

109239 - HEAT STANDBY TIMER

6

44168 - TERMINAL BLOC K

7

22221 - DRAIN VALVE

8

107211 - COOLING FAN ( OPT )

9

22218 - WATER SOLENOI DS

10 11

103731 - HI LIMIT SWITCH 300022 - CONTACTOR

12

108331 - RESET CIRCUIT BRKR

13

20535 - TRANSFORM ER

14 15

107241 - WATER BOARD 107239 - PROBE

16

WHT

BLK

14

H4 H2

208/240

VOLT

BLK

X2X1

H1

H3

BLK

24

L1

L3

L2

CUSTOMER CONNECTION

WHT/BRN

BRN

BLK

11

BLK

PARTS LIST:

BLK

FU

27

28

13

BLK

WHT WHT WHT

25

12

BRN

17 18 19

20 21 22 23 24 25 26 27 28

BLK

HEATER ELEMENT

RED DRYING ELEMENT BLK WHT

HEATER ELEMENT

RED WHT DRYING ELEMENT

108880 - DOOR SW ( MAGNETIC ) 41350 - BUZZER 110198 - MOTORIZED TIMER 20477 - 3 SEC TIMER 104234 - CONTACTOR 106541 - INTMT BLOWDOWN TIMER 105966 - RELAY 101540 - END SEGMENT

101541 - TERM BLOCK SECTIONAL 20304 - GROUND LUG 109380- 3.5 AMP, 600V FUSE 109374 - FUSE BLOCK

P106347 M