Vulcan Hart C24EO3 Manuel de service
SERVICE MANUAL
C24EO SERIES ELECTRIC
COUNTERTOP STEAMERS
C24EO3 ML-136006
C24EO5 ML-136007
C24EO5
- NOTICE -
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.
A product of Vulcan-Hart 3600 North Point Blvd Baltimore, MD 21222
F25386 (0415)
C24EO SERIES ELECTRIC COUNTERTOP STEAMERS
TABLE OF CONTENTS
GENERAL .................................................................................................. 3
INSTALLATION, OPERATION AND CLEANING ......................................................... 3
INTRODUCTION ....................................................................................... 3
FEATURES ........................................................................................ 3
STEAM COOKING ................................................................................. 3
MODEL DESIGNATIONS ........................................................................... 3
EXTERIOR DIMENSIONS .......................................................................... 3
SPECIFICATIONS ...................................................................................... 3
TOOLS ................................................................................................. 3
REMOVAL AND REPLACEMENT OF PARTS ............................................................... 5
COVERS AND PANELS ................................................................................ 5
COMPONENT PANEL COMPONENTS ................................................................. 6
TIMER ................................................................................................. 6
HOLD THERMOSTAT .................................................................................. 6
HIGH LIMIT THERMOSTAT ............................................................................ 7
LOW WATER THERMOSTAT ........................................................................... 8
TEMPERATURE PROBE ............................................................................... 8
HEATING ELEMENT ASSEMBLY ....................................................................... 8
REMOVAL ......................................................................................... 8
INSTALLATION .................................................................................... 9
MANUAL DRAIN VALVE .............................................................................. 10
DOOR ................................................................................................ 10
DOOR GASKET ....................................................................................... 10
DOOR HANDLE ....................................................................................... 11
DOOR LATCH ASSEMBLY ............................................................................ 12
DOOR HINGE BEARINGS ............................................................................. 13
SERVICE PROCEDURES AND ADJUSTMENTS ........................................................... 15
DOOR LATCH ADJUSTMENT ......................................................................... 15
OPENING A JAMMED DOOR ..................................................................... 15
ADJUSTMENT .................................................................................... 15
HEATING ELEMENT TEST ............................................................................ 16
TEMPERATURE CONTROL CALIBRATION ........................................................... 16
ELECTRICAL OPERATION ................................................................................ 18
COMPONENT FUNCTION ............................................................................ 18
COMPONENT LOCATION ............................................................................. 19
SEQUENCE OF OPERATION ......................................................................... 19
TIMED COOKING MODE .......................................................................... 19
CONSTANT COOKING MODE .................................................................... 20
SCHEMATIC DIAGRAM ............................................................................... 22
WIRING DIAGRAMS - HEATING ELEMENTS .......................................................... 23
C24EO3 - 208V/240V ............................................................................. 23
C24EO5 - 208V/240V ............................................................................. 23
C24EO5 - 480V ................................................................................... 24
TROUBLESHOOTING ..................................................................................... 26
TROUBLESHOOTING ................................................................................. 26
© VULCAN 2015
F25386 (0415) Page 2 of 27
C24EO SERIES ELECTRIC COUNTERTOP 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.
• Hardness - Less than 3 grains (17.1ppm = 1 grain
of hardness)
• 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
ELECTRIC
AMPERAGE PER LINE
MODEL
C24EO3 8 22.2 19.2 - 38.5 33.3
C24E05 12 33.3 28.9 14.4 57.5 50.0
NOTES:
TOTAL
KW
1. Amperage values in the table are
nominal. Tolerance is +5/-10%.
2. HC24EO3 - 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. HC24EO5 - 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 (LINK to AI2852).
3 PHASE 1 PHASE
208
240V 480V 208V 240V
V
Model Designations
• C24EO3 - 3 pan capacity
• C24EO5 - 5 pan capacity
NOTE: based on 2.5 inch pan depth
Exterior Dimensions
• C24EO3 - 24" w x 33" d x 19.5" h
• C24EO5 - 24" w x 33" d x 26" h
SPECIFICATIONS
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.
WATER REQUIREMENTS
Page 3 of 27 F25386 (0415)
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.)
C24EO SERIES ELECTRIC COUNTERTOP STEAMERS - GENERAL
• 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® ODC-Free Cleaner and Degreaser
(McMaster-Carr Part No. 66415A21) or
equivalent fast drying, no residue cleaner.
• Loctite® 7471™ Primer N™ Part No. 544434-2
• Loctite® 271™ or equivalent
• Loctite® 242™ Part No. 520228 for threads of
door screws
• RTV 109 for securing gasket to door
• Lubriplate 630AA for door handle sliding bracket
F25386 (0415) Page 4 of 27
C24EO SERIES ELECTRIC COUNTERTOP STEAMERS - REMOVAL AND REPLACEMENT OF PARTS
REMOVAL AND REPLACEMENT OF PARTS
COVERS AND PANELS
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
SIDE PANELS
1. Remove screws from bottom of panel.
Fig. 3
4. Lift top cover off machine.
5. Reverse procedure to install.
Fig. 1
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.
REAR PANEL
1. Remove screws securing rear panel.
Fig. 4
2. Disconnect tube from steam vent pipe.
3. Remove rear panel.
4. Reverse procedure to install.
Fig. 2
3. Remove nuts securing front of top cover.
Page 5 of 27 F25386 (0415)
C24EO SERIES ELECTRIC COUNTERTOP STEAMERS - REMOVAL AND REPLACEMENT OF PARTS
COMPONENT PANEL
COMPONENTS
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Remove right side panel as outlined under
COVERS AND PANELS.
2. Disconnect lead wires to component being
replaced.
Fig. 6
3. Remove timer knob.
4. Remove rotary shaft seal from timer shaft and
remove timer.
Fig. 5
3. Remove component.
4. Reverse procedure to install replacement
component and check steamer for proper
operation.
NOTE: If replacing temperature control, see in
SERVICE PROCEDURES AND ADJUSTMENTS.
TIMER
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Remove right
2. Disconnect lead wires to timer.
SIDE PANEL.
Fig. 7
5. Reverse procedure to install and check steamer
for proper operation.
HOLD THERMOSTAT
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Remove right
2. Remove lead wires and mounting nuts.
SIDE PANELS.
F25386 (0415) Page 6 of 27
C24EO SERIES ELECTRIC COUNTERTOP STEAMERS - REMOVAL AND REPLACEMENT OF PARTS
3. Remove thermostat from mounting bracket.
4. Remove screw and heat shield to access
capillary bulb.
Fig. 8
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
for proper operation.
HIGH LIMIT THERMOSTAT
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
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.
Fig. 10
5. Loosen screws securing capillary bulb.
Fig. 11
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.
Fig. 9
NOTE: Do not clamp bulb with excessive force.
Page 7 of 27 F25386 (0415)
C24EO SERIES ELECTRIC COUNTERTOP STEAMERS - REMOVAL AND REPLACEMENT OF PARTS
LOW WATER THERMOSTAT
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Remove right SIDE PANEL and REAR PANEL.
2. Disconnect lead wires.
Fig. 13
3. Remove temperature probe from steam vent
pipe.
4. Reverse procedure to install replacement probe
and check steamer for proper operation.
Fig. 12
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.
C. Install thermostat hand tight. Do not over
tighten.
TEMPERATURE PROBE
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
5. Adjust temperature control as outlined under
TEMPERATURE CONTROL CALIBRATION in
SERVICE PROCEDURES AND
ADJUSTMENTS.
HEATING ELEMENT ASSEMBLY
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
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.
1. Remove right
2. Remove screw and heat shield.
SIDE PANEL.
1. Remove right SIDE PANEL and REAR PANEL.
2. Disconnect probe leads from the temperature
control.
F25386 (0415) Page 8 of 27
C24EO SERIES ELECTRIC COUNTERTOP STEAMERS - REMOVAL AND REPLACEMENT OF PARTS
5. Partially remove heating element assembly by
pulling assembly towards you.
6. Remove high limit thermostat bulb and bracket.
Fig. 14
3. Remove bolts.
NOTE: Support heating element assembly while
removing last bolt.
7. Remove heating element assembly.
Fig. 17
Fig. 15
4. Disconnect heating element leads from 1CON
and 2CON, noting their locations.
Installation
NOTE: When replacing element assembly for 3 pan
unit with 240V supply, disconnect and insulate
element leads with orange, green, and red markers
(three 664W elements not used).
1. Completely and evenly coat heating element
assembly with thermal transfer compound using
notched trowel. (Use one 13.5 oz. tube of thermal
transfer compound)
Fig. 16
Fig. 18
2. Partially install heating element assembly, then
mount high limit thermostat bulb and bracket to
assembly.
A. Apply thermal transfer compound between
high limit bulb and heating element
assembly.
3. Install heating element assembly. Push element
assembly towards front of machine.
Page 9 of 27 F25386 (0415)
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