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Cleveland Steamcraft III Service Manual

Counter type convection steamer
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Summary of Contents for Cleveland Steamcraft III

  • Page 2 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...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS PAGE INSPECTION AND UNPACKING INSTALLATION INSTRUCTIONS 3 -12 Installation Policies Basic Assembly 3 - 5 Installation Clearances Service Connections Electrical 6 - 7 Water Recommended Plumbing 7 - 11 Water Quality Requirements Drain Start-Up and Check-Out ® INTRODUCTION TO SteamCraft Operational Safety OPERATIONAL FUNCTIONS...
  • Page 4 ELECTRICAL CIRCUITRY OVERVIEW PRIMARY CIRCUITS Testing of Heating Elements 120 VAC CIRCUITS Water FBI Solenoid Valve Condenser Water Solenoid Valve Contactors: Front- 3-Pole (before S/N C 1613-88A-24) 4-Pote (after S/N C 1613-88A-23) Rear- 3-Pole (before S/N C 1613-88A-24) LOW VOLTAGE CIRCUITS AND CONTROL BOARD 27-29 Door Sensor Membrane Switch...
  • Page 5 Water Inlet to Condenser System: On units before S/N C 2937-88F-14 On units after S/N C 2937-88F-13 On units after S/N C 5519-88L-16 Drainage System: On units before S/N C 2937-88F-14 On units after S/N C 2937-88F-13 On units after S/N C 5519-88L-16 Electrical Components Front Control Panel Compartment Door and Hinge...

  • Page 6: Inspection And Unpacking

    • 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 installation of equipment, including, but not limited to temporary or mobile installations.

  • Page 15: Drain

    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.

  • Page 16: Start-Up And Check-Out

    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.
  • Page 19 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.
  • Page 20 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.

  • Page 21: Unit Functional 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.
  • Page 22 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.

  • Page 24: Steamer Timer Setting Guide

    CET-8 Service Manual Page 21 SUGGESTED TIMER SETTING GUIDE Item Maximum Amount Per Number of Perforated Suggested Timer Pans 12 x 20 x 2 1/2'' Setting Minutes Asparagus Spears 5 Lbs. (2.3 Kg) Broccoli Spears 4 Lbs. (1.8 Kg) 8-11 Carrots (Whole Baby) 4 Lbs.

  • Page 25: Chemical Descaling Instructions

    Page 22 CET-8 Service Manual DAILY CLEAN-UP (Continued) 3. The pan slide racks are easily removed from the steaming compartment for thorough cleaning They are stainless steel and can be washed safely in a dishwasher (See , to reinstall.) "Basic Assembly," page 4 4.

  • Page 26: Cleaning Procedure

    CET-8 Service Manual Page 23 CLEANING PROCEDURE: 1. Make sure that the steamers' on/off "POWER" touchpad is in the OFF position. Allow ample time for the compartment and the water in the Steam Generator to cool down before proceeding to step #2. 2.

  • Page 27: Electrical Circuitry Overview

    A block diagram for the SteamCraft III is shown in Fig. 1. SteamCraft III counter type steamers are composed of three separate power systems with interface between each being handled by relays and contactors. The primary voltage source provided by the customer is used to power all major power loads in the steamer.

  • Page 28: Primary Circuits

    (ground) should always be checked. A very high (over 1 Meg ohm) or infinite resistance should be found between either terminal and ground for dry undamaged heating elements. CLEVELAND DESIGN WATTS VOLTS OHMS (+/-5%)

  • Page 29: 120 Vac Circuits

    Page 26 CET-8 Service Manual 120 VAC CIRCUITS The acceptable voltage range for the 120 V secondary circuits is 105 to 140 VAC measured no load at the transformer. For ease of identification all of these circuits are wired with 8 AWG white wire with color stripe or tracer. All of the wiring is contained in one harness assembly having one, six position plug for connection to the control board.

  • Page 30: Low Voltage Circuits And Control Board

    See information below for details. Printed circuit boards used in Cleveland Range equipment are manufactured with conformal type coatings applied over all components and circuit traces for moisture protection. This coating may be damaged or removed during handling or shipment.

  • Page 33: Membrane Switch

    WATER LEVEL PROBES GENERAL DESCRIPTION: All Cleveland Range steamers employ resistive sensing type water level control circuits. In this a low power AC current source develops a potential between the shell of the Steam Generator and the sensing probe. When water fills the tank to the point where the water contacts the probe, current begins to flow (through water) in the circuit.

  • Page 34: Flood Probe

    Page 31 The SteamCraft III steamer uses a high frequency (15 to 20 kHz) AC current source with an open circuit voltage of 0.6V RMS ( + /-5%). The nominal set point resistance tor all water level probe functions in these steamers is 12,000 Ohms.

  • Page 35: Water Level

    Page 32 CET-8 Service Manual WATER LEVEL: 1) Turn off water or disconnect wires to the water fill solenoid and drain Steam Generator. 2) Disconnect the blue wire from the middle water level probe 3) Using a meter set the resistance of the potentiometer to 20,000 Ohms 4) Connect the pot to COMMON (green) and water level probe (blue wire) 5) Turn on unit (push "POWER"...

  • Page 36: Low Water Level

    CET-8 Service Manual Page 33 LOW WATER LEVEL: 1) Turn off water or disconnect wires to the water fill solenoid and drain Steam Generator. 2) Disconnect the black wire from the lower water level probe 3) Using a meter set the resistance of the potentiometer to 20,000 Ohms 4) Connect the pot to COMMON (green) and water level probe (black wire) 5) Turn on unit (push "POWER"...

  • Page 37: Temperature Control Circuits

    TEMPERATURE CONTROL CIRCUITS GENERAL DESCRIPTION: Two separate temperature control circuits have been incorporated into the controls of SteamCraft III steamers. These controls offer the additional standby and power conservation features. Both circuits use a negative temperature coefficient thermistor (pan # 101508. used on units before S/N C 1613-88A-24) as a temperature sensor and a board mounted potentiometer for set point adjustment.

  • Page 38: Thermistors (On Units Before S/N C 1613-88A-24)

    CET-8 Service Manual Page 35 THERMISTORS (on units before S/N C 1613-88A-24): The resistance of a negative temperature coefficient thermistor will decrease as temperature increases. To determine proper operation, first measure the resistance of the thermistor at room temperature, it should be between 90,000 and 125,000 ohms.
  • Page 68 CET-8 Service Manual Page 65 Miscellaneous Parts List Description Number Steam Generator Cover Assembly 101288 Pan Racks 414231 Wire Harness: Terminal Block to Contactor 101908 Contactor to Heater 101907 Control Circuit 101919 Leg, 4" 101450...

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Cet-8

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