Cleveland Range CET-8 Service Manual

Steamcraft® III

SERVICE

Model CET

-8

COUNTER TYPE CONVECTION STEAMER

MANUAL

Printed 08/89

CTS-03

IMPORTANT

THE STEAM GENERATOR IN THIS UNIT REQUIRES PERIODIC MAINTENANCE. FAILURE TO PERFORM THE REQUIRED MAINTENANCE (BASED ON WATER QUALITY AT THE INSTALLATION AND VERIFIED BY MAINTENANCE RECORDS) WILL RESULT IN THE CANCELLATION OF WARRANTY COVERAGE ON THE STEAM GENERATOR.

WATER QUALITY REQUIREMENTS

THE RECOMMENDED MINIMUM WATER QUALITY STANDARDS WHETHER UNTREATED OR PRE-TREATED, BASED UPON 10 HOURS OF USE PER DAY, AND A DAILY BLOWDOWN, ARE AS FOLLOWS:

TOTAL DISSOLVED SOLID

less than 60 parts per million

TOTAL ALKALINITY

less than 20 parts per million

SlLICA

less than 13 parts per million

pH FACTOR

greater than 7.5

CONSULT A LOCAL WATER TREATMENT SPECIALIST FOR AN ON SITE WATER ANALYSIS AND THIER RECOMMENDATIONS CONCERNING STEAM GENERATOR FEED WATER TREATMENT (IF REQUIRED), IN ORDER TO REMOVE OR REDUCE HARMFUL CONCENTRATIONS OF MINERALS. THE USE OF HIGHLY MINERALIZED WATER WILL MEAN THAT MORE FREQUENT SERVICING OF THE STEAM GENERATOR WILL BE NECESSARY. THE FACT THAT A WATER SUPPLY IS POTABLE IS NOT PROOF THAT IT WILL BE SUITABLE FOR THE GENERATOR.

TABLE OF CONTENTS

INSPECTION AND UNPACKING INSTALLATION INSTRUCTIONS

Installation Policies 3 Basic Assembly 3 - 5 Installation Clearances 5 Service Connections 6 Electrical 6 - 7 Water 7 Recommended Plumbing 7 - 11 Water Quality Requirements 7 Drain 12 Start-Up and Check-Out 13

INTRODUCTION TO SteamCraft® III

Operational Safety 13

OPERATIONAL FUNCTIONS

Control Panel Overview 14 Setting Digital Time Display 14 "TIMED" -Mode 14 "MANUAL" Mode 15 Special Notes About Control Pane! 15 Thermostatic Timer Compensation 15

PAGE

3 -12

14 -15

UNIT FUNCTIONAL TEST

Before S/N C 1613-88A-24 (with Thermistors) 15 - 17 After S/N C 1613-88A-23 (without Thermistors) 18 - 20

START-UP AND PREHEAT STEAMING OPERATION STEAMER TIMER SETTING GUIDE PREVENTATIVE MAINTENANCE CHEMICAL DESCALING INSTRUCTIONS

21 - 22 22 - 23

20 20 21

ELECTRICAL CIRCUITRY OVERVIEW 24 PRIMARY CIRCUITS

Testing of Heating Element s 25

120 VAC CIRCUITS

Water FBI Solenoid Valve 26 Condenser Water Solenoid Valve 26

Contactors: Front - 3-Pole (before S/N C 1613-88A-24) 26 4-Pote (after S/N C 1613-88A-23) 26 Rear- 3-Pole (before S/N C 1613-88A-24) 26

LOW VOLTAGE CIRCUITS AND CONTROL BOARD

Door Sensor 27 Membrane Switch 30

Compartment Temperature Switch 30

27-29

WATER LAVEL PROBES

General Description 30 Flood Probe 31 Water Level 32 Low Water Level 33

TEMPERATURE CONTROL CIRCUITS

General Description 34 Standby 34 Drain Temperature Adjust 4

Thermistors (on units before S/N C 1613-88A-24) 35

EXPLODED-VIEW ASSEMBLY DRAWINGS and PART IDENTIFICATION

Steam Generator. On units before S/N C 2937-88F-14 36 On units after S/N C 2937-88F-13 37 On units after S/N C 5080-88J-00 38-41 Heating Element s 42-43

Probes 44-47 Water Inlet to Steam Generator

On units before S/N C 2937-88F-14 48 On units after S/N C 2937-88F-13 51 On units after S/N C 5519-88L-16 54

Water Inlet to Condenser System:

On units before S/N C 2937-88F-14 49 On units after S/N C 2937-88F-13 52 On units after S/N C 5519-88L-16 55

Drainage System: On units before S/N C 2937-88F-14 50

On units after S/N C 2937-88F-13 53

On units after S/N C 5519-88L-16 56 Electrical Components 57 Front Control Panel 58 Compartment Door and Hinge 59 On units after S/N C 6100-89B-27 60 Door Handle Assembly 62 Door Handle Assembly 63 Cold Water Inlet Strainer Assembly 64

MISCELLANEOUS PARTS LIST 65 WIRING DIAGRAMS

66 - 70

MAINTENANCE and REPAIR CENTERS

Page 3

INSPECTION

Before unpacking, visually inspect the shipping carton for evidence of any damage during shipment If there are signs of possible damage, do not unpack the equipment. Notify the carrier that delivered the shipment so the canon and its contents can be examined for any damage claims. Fill out all appropriate forms and have the examining carrier sign and date each form. Do not install damaged equipment

UNPACKING

1. If the shipping carton has no signs of possible damage, unpack the equipment To remove the unit from the carton, it is easiest to slit the canon in 4 comers and "peel" it away from the steamer. After removing the canon, examine the steamer for signs of possible damage. If damage exists, detail your observations on a claims form and give to the shipper (keep a copy for your records).

2. If the equipment is undamaged, lift the unit to the counter top OF stand where it is to be installed. Do not install damaged equipment

INSTALLATION INSTRUCTIONS

WARNING Installation of this unit mas t be done by qualified plumbing and electrical! installation

personnel working to all applicable local and national codes. The equipment is to be installed to comply with the Basic Plumbing Code of the Building Officials and Code Administrators International, Inc. (BOCA) and the Food Service Sanitation Manual of the Food and Drug Administration (FDA). Improper installation of this product could cause injury or damage and void customer warranty.

INSTALLATION POLICIES:

• Cleveland Range equipment is designed and manufactured to comply with applicable standards

tuners. Included among those certification agencies which have approved the safety of the equipment design and construction are: UL, NSF, CSA, and others.

• Cleveland Range equipment is designed and certified for safe operation only when permanently installed in

accordance with local and/or national codes. Many local codes exist, and it is the responsibility of the owner and installer to comply with these codes.

• In no event shall Cleveland Range assume any liability damage or injury resulting from installation which are

not in strict compliance with our Installation Instructions. Specifically. Cleveland Range will not assume any liability for damage or injury resulting from improper installat ion of equipment, including, but not limited to temporary or mobile installations.

BASIC ASSEMBLY:

1. The four legs have adjustable feet and should be used to level the unit in both directions: front to rear and side to side. It is important for good operation that the unit is level.

2. Open steamer door and remove package of operational pans. It will contain:

(a) Drain Stopper (Units before S/N C3991-881-01) (b) 1 Steam Generator Cover

Page 4

BASIC ASSEMBLY: (Continued)

CAUTION

DO NOT REMOVE PRE-ASSEMBLED PARTS.

They may be damaged if not handled property.

3. Pre-Assembled Parts. When the operating pans package is removed, several pre-assembled parts can be seen inside the unit. Do not attempt to remove these parts.

(d) water level probes (e) heating elements

(f) compartment drain screen

4. Install Drain Stopper (Before S/N C3991-88I-01). With steamer door open, notice the opening in the bottom of the compartment. This leads into the Steam Generator. Inside the Steam Generator about midway along the left -hand side, you will find a square shaped fixture with a drilled hole on top and another on the right side. This is the Steam Generator drain. Place the Drain Stopper vertically as shown. Make sure it seats firmly.

5. Install the Steam Generator Cover. This cover is designed to be installed in only one way. Refer to illustration (b) in Step 2 above. Using both hands, lift and locat e the cover above the Steam Generator opening. Lower the cover until it fits firmly into place.

6. Install the Pan Slide Racks. Each slide rack has 4 'loops' which are designed to loop-over' the stainless steel hanger pins pre-mounted on each compartment wall Position the 2 upper loops on the 2 upper hanger pins. Let go. Now place your hand on bottom of slide rack and gently move the slide rack upward, allowing top of slide rack to lean against compartment wall Bottom loops will easily 'loop-over' bottom hanger pins, Slide rack is now in position. Pans will slide easily on property installed slide racks.

7. Check to insure that the Compartment Drain Screen is free of debris. It is in the left rear comer of the compartment floor.

Page 5

The 40 - MESH STRAINER and 1/4" Brass NIPPLE (P/N

102383) are preassembled and ready for quick installation into the 1/4"" Bulkhead Coupling (see COLD WATER INLET) located on the lower, right rear of the steamer.

Apply Pipe Dope or Teflon Tape to the 1/4" Brass Nipple. Turn the 1/4" Brass Nipple (and Strainer) into the 1/4" Bulkhead Coupling. Using a Pipe Wrench, turn the Strainer, so that the 1/4" Brass Nipple is snug in the 1/4" Bulkhead Coupling (Cold Water Inlet) and the Strainer is in a vertical position as shown (with nut in downward position).

Then flush the Cold Water Inlet line (to be provided by the installer) before connecting it to the Strainer. Be sure to check .for any leakage and adjust accordingly.

9. Drain Valve Location and Operation. The Drain Valve is located in the rear left comer, underneath the steamer. When the red handle is turned toward

the front of the unit the drain valve is open. (see illustration below) A 90° turn to the right will dose the valve.

INSTALLATION CLEARANCES:

The steamer should be installed with the following clearances:

• Left = 2"

• Right = 2"

• Top = 2"

• Bottom =4" (4" legs already mounted to unit)

Page 6 CET-8 Service Manual

SERVICE CONNECTIONS:

(A) Hole for electrical conduit connection leads to terminal block and

ground connection inside unit. On C.S.A. (Canadian Standards Association) units 6 feet of flexible electrical conduit is already attached to the unit for the electrical supply connection.

(B) 1/4" 0 COLD WATER INLET for Steam Generator feed water.

(On units before S/N C 5519-88L-17)

(B) Location for SteamerGard Water Treatment System.

Installation Optional. (On units after S/N C 5519-88L-16)

(On units before S/N C 5519-88L-17)

feed water and Cold Water Condenser. (On units after S/N C 551988L-16)

(D) Drain (On units after S/N C 2937-88F-13)

ELECTRICAL:

1. Install in accordance with local codes and/or the National Electric Code, ANSINFPA No. 70-1987 (USA) or the Canadian Electrical Code CSA Standard C22.1 (Canada). A separate fused disconnect switch must be installed for each unit. The steamer must be electrically grounded by the installer.

2. The electric supply must match the power requirements specified on the steamer's rating label. The copper wiring must be sized to carry the required current at the rated voltage. See table below.

VOLTS

KW 3PH AMPS SIZE (AWG) 1PH AMPS SIZE (AWG)

208 220 240 380 415 460 480

8.1

7.4

8.8

7.4

8.8

7.4

8.8

23 20 22 12 13

10 10 10 12 12 14 14

39 8 34 8 37 8 20 10 22 10 18 12 18 12

NOTE: Use copper wire suitable for not les s than 75° C

3. Locate the six (6) screws that hold the rear panel to steamer and remove them. (Save to use again.) Remove rear panel, expos ing the terminal block on bottom panel of unit. Connect with properly sized copper wire. On C.S.A. units 6 feet of flexible conduit is already attached to the terminal block for the electrical supply connection

CET-8 Service Manual Page 7

4. The steamer is wired 3-phase delta operation at the factory. For single phase operation, the installer must change the two

jumpers on the terminal block to that shown in the accompanying diagram (and on the steamer's wiring diagram label).

5. The steamer will be wired 3 phase WYE connection at the factory. For steamers ordered for 380/220 V or 415/240 V, 4 wire 3 phase.

WATER

A 1/4" l.P.S. (M1N. SIZE) COLD water line is required. DO NOT USE HOT WATER. Minimum water pressure (dynamic) is 35 psi (2.4 kg/cm), the maximum static water pressure is 60 psi (4.1 kg/cm).

Water Quality Requirements

If the purity of the incoming water is good, the generator, the heating element and the valves should give years of trouble-free, efficient service with a minimum of servicing.

The recommended minimum water quality standards, whether untreated or pretreated. for the Steam Generator are as follows:

• TOTAL DISSOLVED SOLIDS less than GO parts per million • SILICA less than 13 parts per million

• TOTAL ALKALINITY less than 20 pans per million • pH FACTOR greater than 7.5

Consult a local water treatment specialist for an on-the-premises water analysis and for recommendations concerning steam generator feed water treatment (if required), in order to remove or reduce harmful concentrations of minerals. The use of a poor quality (highly mineralized) water will mean that more frequent servicing of water sensitive components will be necessary. The fact that a water supply is potable is not proof enough that it will not be detrimental to the water sensitive components.

Recommended Plumbing

• On units (before S/N C 5519-88L-17) the steamer has two Cold Water Inlet Fittings at the lower right -hand

side of the rear panel. The fitting on the left feeds the Cold Water Inlet to the Steam Generator (See figures 13 and 16) and the one on the right feeds the Cold Water Condenser System. (See figures 14 and 17) Decals mark the respective fittings. When using treated water, only the Cold Water Inlet to the Steam Generator need be connected to the treater; the Cold Water Condenser System can use untreated water.

• On units (after S/N C 5519-88L-16) the steamer has one Cold Water Inlet Fitting at the lower right -hand side

of the rear panel (See illustration on page 5). When using a Water Treatment System, the connection for the Steam Generator (Boiler) is made through the optional hole provided. This process will also require additional parts. The Cold Water Condenser System can use untreated water. (See illus tration on page 11). NOTE: See rear view drawing in "Service Connections, "B & C (page 6).

page 8 CET-8 Service Manual

Recommended Plumbing (Continued)

NOTE: This water supply arrangement is used on

units before S/N CS519-88L-17.

TOP VIEW

Recommended Plumbing (Continued)

NOTE: This water supply arrangement is used on

units before S/N C5519-88L-17.

CET-8 Service Manual Page 9

TOP VIEW

RECOMMENDED PLUMBING

WATER

TREATMENT

SYSTEM:

Page 10 CET-8 Service Manual

Recommended Plumbing (Continued)

NOTE: This water supply arrangement is used

on units before S/N C5519-88L-16.

REAR VIEW

TOP VIEW

Recommended Plumbing (Continued)

CET-8 Service Manual Page 11

NOTES:

1. This water supply arrangement is used on units after S/N C5519-88L-16.

2. The conversion kit for converting one incoming water line into two for a treatment system is P/N

102431.

WATER TREATMENT SYSTEM

RECOMMEMDED PLUMBING ( to be supplied by installers)

WATER

TREATMENT

SYSTEM:

Page 12 CET-6 Service Manual

Drain

This drain line outlet discharges exhaust steam and hot condensate. Connect 1-1/4" I.P.S. piping (or larger) to extend the drain line to a nearby open floor drain. Up to two elbows and six feet of 1-1/4" I.P.S. (or larger) extension pipe should be connected to the drain termination. Drain piping extended six to twelve feet. or using three elbows, should be increased to 2" I.P.S. - DO NOT, UNDER AN CIRCUMSTANCE, CONNECT ANY OTHER EQUIPMENT DRAIN TO THIS DRAIN LINE. The extension piping must have a gravity flow and vent freely into the air. This drain outlet must be free vented to avoid the creation of back pressure in the steamer cooking compartments.

To ensure a vented drain line, DO NOT, UNDER ANY CIRCUMSTANCE, CONNECT THE DRAIN

OUTLET DIRECTLY TO THE FLOOR DRAIN OR SEWER LINE.

Do not run the drain fine discharge into PVC drain piping or any other drain material not capable of sustaining 180°F operation. The equipment is to be installed to comply with the Basic Plumbing Code of the Building Officials and Code Administrators International, Inc: (BOCA) and the Food Service Sanitation Manual of the Food and Drug Administration (FDA).

In making a connection to the dram termination use a hardening type of pipe sealant. FINGER TIGHTEN ONLY -

DO NOT USE A WRENCH.

FAILURE TO OBSERVE THESE REQUIREMENTS CAN RESULT IN DAMAGE TO EQUIPMENT AND/OR THE POSSIBILTY OF INJURY.

If these instructions are not complied with, there will be steam and water leakage past the

compartment door. Furthermore, the possibility of serious personal injury may result.

CET-8 Service Manual Page 13

Start-Up and Check-Out

1. Be sure to put the Steam Generator Cover in its' proper location.

2. Close Drain Valve.

3. Turn on water at supply valve.

4. Turn on electricity at Fused Disconnect Switch.

5. Close steamer door.

6. Press "POWER" touch pad.

7. Set Timer display at "01"minutes.

8. Press "TIMED" touch pad. The unit will HI with water and begin to make steam. After the compartment reaches operating temperature the timer will count down to "00" and an alarm will beep. This test will take 5 to 10 minutes.

9. Press "MANUAL* touch pad. The Heater Elements and the Cold Water Condenser will turn on. Open and dose the door several times to ensure that the steam shuts off with the door open.

INTRODUCTION TO

To get the full advantage of steam cooking, the Cleveland SteamCraft III must be properly installed. A steamer which is improperly installed, improperly used, improperly maintained, or improperly repaired will create a dangerous condition and may cause injury to personnel.

OPERATIONAL SAFETY Your Cleveland SteamCraft III will require minimum servicing provided it is operated according to instructions and

given the care recommended. Make sure that responsible personnel understand how your steam cooking equipment should be operated and

cared for. Proper use and maintenance pay handsome dividends in longer equipment He and satisfactory performance minimal down-time.

Safe steam cooking equipment operation dictates that every owner should follow these rules for operational safety.

1. Begin a comprehersive, continuous program of steam cooking equipment inspection.

2. Never allow untrained personnel to operate your steam cooking equipment. Establish an in-house training policy and adhere to ft.

3. At the end of each day's operat ion:

-Shut unit down at the end of each day's operation according to instruction on pages 21 -22.

-Remove any spilled food, then wash the racks and compartment interiors thoroughly with mid detergent in warm water. Rinse thoroughly with dean warm water. (Racks can be removed and washed in a dishwasher if desired. To reinstall see Basic Assembly instructions, page 4.)

Let rinse water drain through compartment drain opening. If water does not drain freely, drain lines must be cleaned out before cooking again. Clogged or slow drains are dangerous because hot water may spill out when compartment doors are opened during or after a cooking cycle.

-Before cleaning the steamer's exterior, BE SURE THAT ELECTRICITY TO THE UNIT AT FUSED DISCONNECT SWITCH IS OFF. Use a damp cloth for cleaning. Never hose down the equipment.

4. Read and follow Cleveland Range instructions on steamer and steam generator maintenance.

5. Use only replacement parts which are factory authorized to preserve the certification of Underwriters Laboratories, Canadian Standards Association, and all approvals and to protect your warranty coverage.

6. Never allow unqualified personnel to service your steamer.

Page 14 CET-8 Service Manual

OPERATIONAL FUNCTIONS

Operation of the Cleveland SteamCraft III is very easy. Each operator should become familiar with the following operational functions and procedures to effectively start, operate, and shut down the steamer.

CONTROL PANEL OVERVIEW:—————————————————————————————————————

1. "POWER" -ON and OFF touch pad controls the power to unit. The red indicator light above the touch •pad is illuminated when the power is ON.

2. "MANUAL" -ON and OFF touch pad controls the manual operation. The green indicator light above the touch pad is illuminated when operating in the manual mode.

3. "TIME SET" -Directional touch pads are used to adjust the time on the DigitaI Time Display located above the two touch pads. A maximum of 99 minutes can be programmed. The green indicator fight to the right of the Digital Time Display flashes when the steaming compartment is at steaming temperature and the time is counting (up or down).

4. "TIMED" -ON and OFF touch pad controls the timed operation. The green indicator light above the touch pad is illuminated when operating in the TIMED mode.

5. "FLOOD" -FLOOD is a safety signal. POWER to the unit will automatically turn off when the signal comes on. Refer to the troubleshooting section when displayed.

6. "WATER" -WATER illuminates as the steam generator fills turns off when the water level reaches the safe operating level.

The touch pad controls are designed to be pressed with finger tips only. Be careful not to use

fingernails, kitchen utensils or anything that could cause damage.

SETTING DIGITAL TIME DISPLAY: ————————————————————————————————————————— ————

To set Digital Time Display for TIMED mode, press and hold the "LEFT" touc h pad and the display will begin counting upward from 01 to 10 slowly, then more quickly. Run the time up until display is dose to (or over) value wanted, then use the "LEFT" and "RIGHT" touch pads to set actual time desired. Digital time Display must be reset before each new cooking process can begin. (Refer to the Steamer Timer Setting Guide on page 21 for suggested settings.)

TIMED MODE: ————————————————————————————————————

If TIMED operation is desired, cooking time must be set on Digital time Display. Begin timed cooking by pressing "TIMED" touch pad. The green indicator light above the "TIMED" touch pad will become illuminated. When the unit reaches cooking temperature, the timing sequence will begin and win be confirmed by a flashing green indicator light to the right of the DIGITAL TIME DISPLAY. At the conclusion of the timed period, the DIGITAL TIME DISPLAY will flash

00. the green indicator light will go out and a 4 second beeping signal win begin.

OPERATIONAL FUNCTIONS (Continued)

MANUAL MODE:

If TIMED operation is NOT desired, unit may be operated in the MANUAL mode by pressing the "MANUAL" touch pad which turns the steam flow ON and OFF. The green indicator light above the "MANUAL" touch pad will be illuminated when unit is ON in the MANUAL mode. (When operating in the MANUAL mode, the Digital Time Display will start at 00 and count upward, after the steaming compartment reaches cooking temperature, keeping actual time lapsed.)

SPECIAL NOTES ABOUT CONTROL PANEL:

• Above the "POWER" touch pad is an alert signal which will begin flashing FLOOD - if the water level controls or drain are not functioning properly and water threatens to overflow the steam generator. This signal means the unit has shut off the water and all other func tions.

• Above the "MANUAL" touch pad is a signal which will light up - WATER. It indicates insufficient water level in the steam generator and will automatically go off when a safe water level is attained. Steamer will not produce steam when this light is on.

CET-8 Service Manual Page 15

NOTE: the event that either of these two-word displays do NOT turn off at the proper time and no

quick remedy can be found (turning of a water valve, etc.) the unit will require the attention of an Authorized Service Representative.

If FLOOD light is flashing, DO NOT OPEN COMPARTMENT DOOR! Shut off wetter supply to unit. Flood may be caused by damaged water feed valve. Allow unit to cool before opening compartment door.

THERMOSTATIC TIMER COMPENSATION:

Whenever this automatic adjustment is taking place, the DIGITAL TIME DISPLAY will stop counting down (or up if in "MANUAL" mode) and the green indicator light will stop flashing. Both will remain illuminated. When the steaming compartment reaches a preset temperature, the steaming operation will automatically begin.

This feature doesn't require any control settings by the owner. It is an automatic function designed to ensure consistent cooking results whether your food product is frozen (needing thawed) or if the compartment door is opened too often.

UNIT FUNCTIONAL TEST

Before S/N: C 1613-88A -24 (with Thermistors)

NOTE: This test is intended to be carried out after the unit is installed. If the water,

drain and electrical hook up has been completed property then proceed with test.

1) Open customer's water supply valve.

2) Check for water leakage at all visible pipe joints, tube connections or unions. Wait a few minutes then look for water leaking from body of unit. If any leakage is found, repair leaks before continuing.

3) Turn on electricity at Fused Disconnect Switch.

Page 16 CET-8 Service Manual

4) Check to see that front control panel is off and is not illuminated.

5) Short the flood probe (upper most) to generator or ground. "FLOOD" light should begin to flash within three to four seconds. Push "POWER" touchpad. Unit should not turn on. "FLOOD" light will continue to flash.

6) Turn off electricity to the unit at Fused Disconnect Switch and wait ten seconds. Restore electricity to the unit at the Fused Disconnect Switch.

7) Close Steam Generator drain by removing Steam Generator Cover and placing drain stopper into opening located along left hand side.

8) Push "POWER" touchpad on front control panel.

9) Red indicator light above the "POWER" touchpad, digit displays and "WATER" indicator will light.

10) After approximately five seconds, the water fill solenoid will energize and water will begin to fill the Steam Generator.

11) Check for water leakage around the base of the unit.

12) When water level reaches the low water cutoff probe (lowest) the "WATER" indicator will turn off and heater contactor will be energized. One heating element will begin to heat the water in the Steam Generator.

13) With compartment door open, push "MANUAL" touchpad. Green indicator above touchpad

14) Contactor and heater will turn off.

15) Push "MANUAL" touchpad again.

16) Heater turns on and green indicator turns off.

17) As the Steam Generator temperature reaches "standby temperature" the contactor will be de-energized and heater will turn off.

18) Check that Steam Generator did not come to boil and that water level is correct Water temperature should be between 180° and 190° degrees F.

19) Push "MANUAL" touchpad. Green indicator above touchpad will light. Close compartment door.

20) When compartment door is dosed the condenser solenoid valve and heater contactors will be energized.

21) Check for water flow from drain. Look for water leakage around base of unit

22) Open compartment door. Condenser water and heaters will turn off.

23) Position a test magnet on top of the control panel enclosure over door sensor. Condenser and heaters will turn on.

24) Watch heaters in Steam Generator to determine that all three are working.

NOTE: This test is best done with cold water in the Steam Generator so that any

differences in heater output may be more easily detected. It may be necessary to drain and refill Steam Generator before continuing.

CET-8 Service Manual Page 17

25) Push "MANUAL" touchpad and remove test magnet.

26) Install Steam Generator Cover and close compartment door.

27) Push and hold "LEFT" Time Set touchpad.

28) Digit displays should count up at two per second for first 5 seconds (display of "00" through "10"). After five seconds displays will count at 20 per second until switch is released.

29) Release and push the "LEFT" Time Set touchpad again.

30) Digits will return to slow counting.

31) Release "LEFT" Time Set touchpad. Repeal steps 27 thru 30 this time pushing "RIGHT" Time Set touchpad.

32) Set time display to "01" and push TIMED" touchpad.

33) As cooking cycle is started the condenser and all heaters will turn on. The green indicator to the right of the time display will not be flashing.

34) When the compartment reaches operating temperature the green Indicator to the right of the digit displays win begin to flash. At this time one heater contactor should be cycling on and off approximately once every 5

35) Turner will count down to "00" one minute after the flashing indicator is first lit, this will end the timed cooking style cycle.

36) At the end of the cycle the heaters and condenser will turn off. the digit displays will flash ("00") and the alarm will beep four times.

37) Push "TIMED" touchpad to stop flashing of the displays.

38) Set timer to any setting over "00".

39) Push "MANUAL" touchpad.

40) Digit display will reset to "00", heaters and condenser will turn on and green indicator by digit displays will flash.

41) Allow the unit to run for at least one minute to see that timer counts up in manual operation.

42) Open compartment door carefully Avoid hot steam contact.

43) Steam and condenser should turn off. Within one minute after the door is opened the timer should stop counting (green indicator stops flashing)

44) Push "POWER" touchpad one time. Unit turns off

45) End of test.

Page 18 CET-8 Service Manual

UNIT FUNCTIONAL TEST

After S/N: C 1613-88A -23 (without Thermistors)

NOTE: This test is intended to be carried out after the unit is installed. If the water,

drain and electrical hook up has been completed property, men proceed with test.

1) Open customer's water supply valve.

3) Turn on electricity at Fused Disconnect Switch.

4) Check to see that front control panel power is off and it is not illuminated.

5) Short the flood probe (upper most) to generator or ground."FLOOD" light should begin to flash within four seconds. Push "POWER" switch. Unit will not turn on. "FLOOD" light will continue to flash.

6) Turn off electricity to the unit at Fused Disconnect Switch and wait ten seconds. Restore electricity to the unit Fused Disconnect Switch.

7) Close Steam Generator drain valve by reaching under the unit and pushing the handle to the right. (Units before serial number C2937-88F-14 have a drain stopper in the generator that must be in place.)

8) Push "POWER" touchpad on front control panel.

9) Red indicator light above the "POWER" touchpad, digit displays and "WATER" indicator will light.

10) After approximately five seconds, the water fill solenoid will energize and water will begin to fill the Steam Generator.

11) Check for water leakage around the base of the unit.

12) If you have removed the front control panel to check for water leakage, make sure ft is up in place and the compartment door is closed. When water level reaches the low water cutoff probe (lowest) the "WATER" indicator will turn off and the heater contactor will be energized. The heating elements will begin to heat the water in the Steam Generator.

13) Open the compartment door and the contactor and heaters will turn off.

14) Clos e compartment door. Push the "MANUAL" touchpad.

15) When compartment door is dosed the condenser solenoid valve and heater contactors will be energized.

16) Check for water flow from drain. Look for water leakage around base of unit.

17) Open compartment door. Condenser water and heaters will turn off.

18) Position a test magnet on top of the control panel enclosure over door sensor. Condenser and heaters will turn on.

CET-8 Service Manual Page 19

19) Watch heaters in Steam Generator to determine that all three are working.

NOTE: This test is best done with cold water in the Steam Generator so that any

differences in heater output may be more easily detected. It may be necessary to drain and refill Steam Generator before continuing.

20] Push "MANUAL" touchpad and remove test magnet.

21) Install Steam Generator Cover and dose compartment door.

22) Push and hold "LEFT" Time Set touchpad.

23) Digit displays should count up at two per second for first 5 seconds (display of "00" through "10"). After five seconds displays will count at 20 per second until switch is released.

24) Release and push the "LEFT" Time Set touchpad again.

25) Digits should return to slow counting.

26) Release "LEFT" Time Set touchpad. Repeat steps 22 thru 25 this time pushing "RIGHT" Time Set touchpad.

27) Set time display to Wand push "TIMED" touchpad.

28) As cooking cycle is started the condenser and all heaters will turn on. The green indicator to the right of the time display should not be flashing.

29) When the compartment reaches operating temperature the green Indicator to the right of the digit displays will begin to flash. At this time one heater contactor should be cycling on and off approximately once every 5 seconds.

30) Timer will count down to "00" one minute after the flashing indicator is first lit, this win end the timed cooking cycle.

31) At the end of the cycle the heaters and condenser will turn off, the digit displays will flash ("00") and the alarm will beep four times.

32) Push TIMED" touchpad to stop flashing of the displays.

33) Set timer to any setting over "00".

34) Push "MANUAL" touchpad.

35) Digit display will reset to "00" heaters and condenser will turn on and green indicator by digit displays will flash.

36) Allow the unit to run for at least one minute to see that timer counts up in manual operation.

37) Open compartment door carefully. Avoid hot steam contact.

38) Steam and condenser should turn off. Within one minute after the door is opened the timer should stop count ing (green indicator stops flashing).

39) Push "POWER" touchpad one time. Unit turns 08.

40) End of test

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