Vulcan-Hart C24EO3 User Manual

SERVICE MANUAL

C24EO SERIES

ELECTRIC

COUNTERTOP

STEAMERS

MODEL ML

C24EO3 136006 C24EO5 136007

C24E05 SHOWN

This Manual is prepared for the use of trained Vulcan Service Technicians and should not be used by those not properly qualified.

This manual is not intended to be all encompassing. If you have not attended a Vulcan Service School for this product, you should read, in its entirety, the repair procedure you wish to perform to determine if you have the necessary tools, instruments and skills required to perform the procedure. Procedures for which you do not have the necessary tools, instruments and skills should be performed by a trained Vulcan Service Technician.

The reproduction, transfer, sale or other use of this Manual, without the express written consent of Vulcan, is prohibited.

This manual has been provided to you by ITW Food Equipment Group LLC ("ITW FEG") without charge and remains the property of ITW FEG, and by accepting this manual you agree that you will return it to ITW FEG promptly upon its request for such return at any time in the future.

For additional information on Vulcan-Hart or to locate an authorized parts and service provider in your area, visit our website at www.vulcanequipment.com.

A product of VULCAN-HART BALTIMORE, MD 21222

F25386 (June 2010)

C24EO SERIES STEAMERS

TABLE OF CONTENTS

GENERAL ................................................................................3

Installation, Operation and Cleaning ........................................................3

Introduction ............................................................................3

Features ..........................................................................3

Steam Cooking.....................................................................3

Model Designations .................................................................3

Specifications ..........................................................................3

Water Requirements .................................................................3

Electric ........................................................................... 3

Tools.................................................................................4

REMOVAL AND REPLACEMENT OF PARTS ....................................................5

Covers and Panels ......................................................................5

Component Panel Components ............................................................ 5

Timer ................................................................................ 6

Hold Thermostat........................................................................ 6

High Limit Thermostat ................................................................... 7

Low Water Thermostat...................................................................7

Temperature Probe ..................................................................... 8

Heating Element Assembly ...............................................................8

Manual Drain Valve .....................................................................9

Door ................................................................................10

SERVICE PROCEDURES AND ADJUSTMENTS.................................................13

Door Latch Adjustment.................................................................. 13

Heating Element Test................................................................... 14

Temperature Control Calibration ..........................................................15

ELECTRICAL OPERATION.................................................................. 16

Component Function ...................................................................16

Component Location ...................................................................17

Sequence of Operation ..................................................................18

Schematic Diagram ....................................................................20

Wiring Diagrams - Heating Elements ......................................................21

TROUBLESHOOTING......................................................................24

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C24EO SERIES STEAMERS - GENERAL

GENERAL

INSTALLATION, OPERATION

AND CLEANING

Refer to the Installation & Operation Manual for specific instructions.

INTRODUCTION

Features

! Requires no water or drain line connections

(manual fill & manual drain).

! Cast aluminum element block for efficient heat

transfer and distribution.

! Field convertible to single phase or three phase

power depending on the supply available.

! 3.0 gallons maximum holding pan capacity.

Steam Cooking

The C24EO series steamer provides timed or continuous mode cooking in a pressure-less compartment. The small physical size of the steamer offers an efficient way to produce many foods in small batches. Pressure-less, convection steam cooking will steam cook fresh foods or will steam defrost and cook frozen foods providing the maximum color, flavor and nutritional value with the least expenditure of energy and labor. The pressureless cooking compartment allows the operator to open and close the door, anytime during a cooking cycle.

Model Designations

! C24EO3 - 3 pan capacity* ! C24EO5 - 5 pan capacity*

*based on 2.5 inch pan depth

SPECIFICATIONS

Water Requirements

A potable water supply does not guarantee that it's suitable for steam generation. The water supply must be within the following specifications or a local water treatment specialist may need to be consulted. If a water treatment system is installed, it must be properly maintained.

! Hardness* - Less than 3 grains ! Silica - Less than 13 ppm ! Total Chloride - Less than 4 ppm ! Ph range of - 7.0 to 8.0 ! Un-dissolved Solids - less then 5 microns

* 17.1ppm = 1 grain of hardness Electric

AMPERAGE PER LINE

MODEL

C24EO3 8 22.2 19.2 - 38.5 33.3 C24EO5 12 33.3 28.9 14.4 57.7 50.0

NOTES:

TOTAL

1. Amperage values in the table are nominal. Tolerance is +5/-10%.

2. C24EO3 - Shipped for 208V 60-50 HZ 3 phase connection. Field convertible to 240V three phase or 208/240V single phase. See wiring diagram AI2853.

3. C24EO5 - Shipped for 208V or 240V or 480V 60-50 HZ, 3 phase. 208V and 240V models are field convertible to 1 phase. See wiring diagram AI2852.

3 PHASE 1 PHASE

208V 240V 480V 208V 240V

Exterior Dimensions

! C24EO3 - 24" w x 33" d x 19.5" h ! C24EO5 - 24" w x 33" d x 26" h

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C24EO SERIES STEAMERS - GENERAL

TOOLS

Standard

! Standard set of hand tools ! Clear silicone sealant ! VOM with an AC current tester (any quality

VOM with a sensitivity of at least 20,000 ohms per volt can be used)

! Temperature meter & thermocouple

Special

! Thermal Transfer Compound, Dow Corning 340

Part No. 819643-2 (13.5 oz. tube) or equivalent for heating element assembly

! Thermal Transfer Compound, Dow Corning 340

Part No. 519504 (2 oz. tube) or equivalent for thermostats

! Torque wrench (in.-lb.) ! Tile Trowel 3/16" x 5/32" V notch; Grainger

catalog stock number 5LG08 or equivalent for coating heating element assembly with thermal transfer compound

! Loctite

(McMaster-Carr Part No. 66415A21) or equivalent fast drying, no residue cleaner.

! Loctite ! Loctite ! Loctite

door screws

ODC-Free Cleaner and Degreaser

7471™ Primer N™ Part No. 544434-2

271™ or equivalent

242™ Part No. 520228 for threads of

! RTV 109 for securing gasket to door ! Lubriplate 630AA for door handle sliding bracket

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C24EO SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS

REMOVAL AND REPLACEMENT OF PARTS

COVERS AND PANELS

Side Panels

1. Remove screws from bottom of panel.

4. Lift top cover off machine.

5. Reverse procedure to install.

Rear Panel

1. Remove screws securing rear panel.

2. Slide panel down to clear top cover.

3. Reverse procedure to install.

Top Cover

1. Remove SIDE PANELS.

2. Remove screws securing rear of top cover.

3. Remove nuts securing front of top cover.

2. Disconnect tube from steam vent pipe.

3. Remove rear panel.

4. Reverse procedure to install.

COMPONENT PANEL

COMPONENTS

1. Remove right side panel as outlined under COVERS AND PANELS.

F25386 (June 2010)Page 5 of 24

C24EO SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS

2. Disconnect lead wires to component being replaced.

3. Remove component.

4. Reverse procedure to install replacement component and check steamer for proper operation.

NOTE: If replacing temperature control, see TEMPERATURE CONTROL CALIBRATION in SERVICE PROCEDURES AND ADJUSTMENTS.

4. Remove rotary shaft seal from timer shaft and remove timer.

5. Reverse procedure to install and check steamer for proper operation.

HOLD THERMOSTAT

TIMER

1. Remove right SIDE PANEL.

2. Disconnect lead wires to timer.

1. Remove right SIDE PANEL.

2. Remove lead wires and mounting nuts.

3. Remove hold thermostat.

4. Apply a small amount of thermal transfer compound to the mating surface (disk side) of the replacement thermostat.

A. Spread the compound completely and

evenly over the surface of the thermostat.

5. Reverse procedure to install and check steamer

3. Remove timer knob.

F25386 (June 2010) Page 6 of 24

for proper operation.

C24EO SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS

HIGH LIMIT THERMOSTAT

Do not sharply bend and kink, or clamp

down on the capillary tube or damage may occur.

1. Remove right SIDE PANEL.

2. Disconnect lead wires from high limit.

6. Remove high limit thermostat.

7. Reverse procedure to install and check steamer for proper operation.

A. Apply a small amount of thermal transfer

compound between capillary bulb and heating element assembly.

NOTE: Do not clamp bulb with excessive force.

3. Remove thermostat from mounting bracket.

4. Remove screw and heat shield to access capillary bulb.

LOW WATER THERMOSTAT

1. Remove right SIDE PANEL and REAR PANEL.

2. Disconnect lead wires.

5. Loosen screws securing capillary bulb.

3. Remove low water thermostat.

4. Reverse procedure to install and check steamer for proper operation.

A. Apply small amount of thermal transfer

compound to tip of thermostat.

B. Apply Loctite 242 to threads of thermostat.

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C24EO SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS

C. Install thermostat hand tight. Do not over

tighten.

TEMPERATURE PROBE

1. Remove right SIDE PANEL and REAR PANEL.

2. Disconnect probe leads from the temperature control.

1. Remove right SIDE PANEL.

2. Remove screw and heat shield.

3. Remove bolts. NOTE: Support heating element assembly while

removing last bolt.

3. Remove temperature probe from steam vent pipe.

4. Reverse procedure to install replacement probe and check steamer for proper operation.

5. Adjust temperature control as outlined under TEMPERATURE CONTROL CALIBRATION in SERVICE PROCEDURES AND ADJUSTMENTS.

HEATING ELEMENT ASSEMBLY

Removal

The heating element assembly contains elements molded into a cast aluminum block. The block is mounted on the underside of cooking compartment. Heating element assembly sits on springs which compress to hold assembly tight to bottom surface of steam chamber but allow for thermal expansion and contraction.

4. Disconnect heating element leads from 1CON and 2CON, noting their locations.

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