Hobart HC24EO5 Installation Manual
HC24EO SERIES STEAMER
MODEL ML
HC24EO3 ML-136006
HC24EO5 ML-136007
701 S. RIDGE AVENUE
TROY, OHIO 45374-0001
937 332-3000
www.hobartcorp.com
FORM 37491 (May 2010)
HC24EO SERIES STEAMER
IMPORTANT FOR YOUR SAFETY
THIS MANUAL HAS BEEN PREPARED FOR PERSONNEL QUALIFIED TO
INSTALL THIS EQUIPMENT, WHO SHOULD PERFORM THE INITIAL FIELD
START-UP AND ADJUSTMENTS OF THE EQUIPMENT COVERED BY
THIS MANUAL.
WARNING
IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION,
SERVICE OR MAINTENANCE CAN CAUSE PROPERTY
DAMAGE, INJURY OR DEATH. READ THE INSTALLATION,
OPERATING AND MAINTENANCE INSTRUCTIONS
THOROUGHLY BEFORE INSTALLING OR SERVICING
THIS EQUIPMENT.
© HOBART 2010
IN THE EVENT OF A POWER FAILURE, DO NOT
ATTEMPT TO OPERATE THIS DEVICE.
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HC24EO SERIES STEAMER
TABLE OF CONTENTS
INSTALLATION, OPERATION AND CARE OF MODEL HC24EO SERIES STEAMERS .................5
GENERAL ....................................................................................................................................5
INSTALLATION ............................................................................................................................5
UNPACKING................................................................................................................................5
INSTALLATION CODES AND STANDARDS ..............................................................................5
LOCATION...................................................................................................................................5
LEVELING FEET .........................................................................................................................6
LEVELING ...................................................................................................................................6
ANCHORING STEAMER ............................................................................................................6
STACKING STAND ......................................................................................................................6
ELECTRICAL CONNECTIONS ...................................................................................................7
ELECTRICAL DATA .....................................................................................................................8
SERVICE CONNECTIONS .........................................................................................................8
Water Connections ................................................................................................................8
Water Treatment ....................................................................................................................8
Water Requirements ..............................................................................................................8
Drain Connection ...................................................................................................................8
VENT HOOD ...............................................................................................................................9
INSTALLATION STARTUP PROCEDURE ..................................................................................9
Calibration Procedure ..........................................................................................................10
OPERATION ....................................................................................................................................12
CONTROLS ...............................................................................................................................12
OPERATING THE STEAMER ...................................................................................................12
LOW WATER ............................................................................................................................12
SHUTDOWN .............................................................................................................................13
EXTENDED SHUTDOWN .........................................................................................................13
CLEANING ......................................................................................................................................14
COOKING COMPARTMENT DRAIN .........................................................................................14
COMPARTMENT .......................................................................................................................14
DOOR GASKET ........................................................................................................................14
LEAVE COMPARTMENT DOOR OPEN....................................................................................14
STAINLESS STEEL EQUIPMENT CARE AND CLEANING ......................................................15
MAINTENANCE ..............................................................................................................................17
REMOVAL OF LIME SCALE DEPOSITS ..................................................................................17
DOOR GASKET ........................................................................................................................17
COOKING HINTS ............................................................................................................................18
ACCEPTABLE PAN SIZES ........................................................................................................18
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HC24EO SERIES STEAMER
COOKING GUIDELINES ...........................................................................................................18
Preparation ..........................................................................................................................18
Frozen Food Items ...............................................................................................................18
PRODUCTS TO BE COOKED IN SOLID PANS .......................................................................19
PRODUCTS TO BE COOKED IN PERFORATED PANS ..........................................................20
TROUBLESHOOTING ....................................................................................................................22
SERVICE AND PARTS INFORMATION ..........................................................................................23
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HC24EO SERIES STEAMER
INSTALLATION, OPERATION AND CARE OF
MODEL HC24EO SERIES STEAMERS
PLEASE KEEP THIS MANUAL FOR FUTURE USE
GENERAL
Vulcan convection steamers are produced
with quality workmanship and material. Proper
installation, usage and maintenance will result
in many years of satisfactory performance.
It is suggested that you thoroughly read this
entire manual and carefully follow all of the
instructions provided.
The HC24EO3 Steamer is rated at 8.0 kW and
the HC24EO5 Steamer is rated at 12.0 kW.
Model HC24EO3 can accommodate three 21/2"
deep (6.4 cm) steam pans. Model HC24EO5
can accommodate ve 21/2" deep (6.4 cm)
steam pans. The HC24EO3 and HC24EO5
electric convection steamers are designed for
cooking vegetables, eggs, and other foods,
in commercial kitchens. The steamer has a
0 to 60 minute timer. The steamers are
designed for installation on countertops or on
optional stands.
INSTALLATION
Before installing, verify that the electrical supply
agrees with the specications on the data plate
located on the front of the steamer in the lower
right hand corner. If the supply and equipment
requirements do not agree, do not proceed with
the installation. Contact your dealer or VulcanHart immediately.
The HC24EO3 is shipped pre-wired for 208
V, 50 to 60 Hz, 3-phase. 240 V and single
phase operation require changes to the heater
connection 240 V, 50 to 60 Hz, 3-phase / 240 V,
50 to 60 Hz, 1-phase and 208 V, 50 to 60 Hz,
1-phase.
UNPACKING
This steamer was inspected before leaving the
factory. The transportation company assumes
full responsibility for safe delivery upon
acceptance of the shipment. Immediately after
unpacking, check for possible shipping damage.
If the steamer is found to be damaged, save
the packaging material and contact the carrier
within 15 days of delivery.
INSTALLATION CODES
AND STANDARDS
The steamer must be installed in accordance
with:
In the United States of America:
1. State and local codes.
2. National Electrical Code, ANSI/NFPA-70
(latest edition). Copies may be obtained from
The National Fire Protection Association,
Batterymarch Park, Quincy, MA 02269.
3. Vapor Removal from Cooking Equipment,
(NFPA-96, latest edition) available from
NFPA.
In Canada:
1. Local codes.
2. Canadian Electric Code, CSA C22.2 (latest
edition). Copies may be obtained from
The Canadian Standard Association, 5060
Spectrum Way, Suite 100, Mississauga,
Ontario, Canada L4W 5N6.
LOCATION
The HC24EO5 is voltage specic. It is available
at 208 V, 50 to 60 Hz, 3-phase / 240 V, 50 to 60
Hz, 3-phase or 480 V, 50 to 60 Hz, 3-phase. It
can be eld converted to single phase.
The installation location must allow adequate
clearances for servicing and proper operation.
Minimum clearance for proper air circulation is
2" (5.1 cm) on the sides and 6" (15.2 cm) on
the back.
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HC24EO SERIES STEAMER
LEVELING FEET
This steamer is shipped with four 2" leveling
feet. Optional 4" leveling feet are available.
The 2" feet can be removed and the optional 4"
feet can be threaded into holes on the bottom
of the unit.
LEVELING
Position and level the unit using leveling feet.
Front of unit should be 1/16" to 1/8" higher than
the rear as indicated in Figure 1. Unit should
be level side to side.
Level the steamer front to back and side to side
by turning the adjustable feet.
ANCHORING STEAMER
1. Place steamer in the desired location on the
countertop and mark four corners. Remove
the steamer and drill 1/2" holes as indicated
in Figure 2.
2. Apply a bead of RTV or other NSF approved
sealant around the bottom edge of the
steamer. If anchoring the steamer, this
bottom seal is necessary to meet NSF
requirements.
3. Set steamer on countertop and bolt down
securely with 3/8" by 16" bolts (not supplied).
Screw length should be tabletop thickness
plus 1/2" for proper thread engagement.
Figure 1: Leveling Steamer
Figure 2: Anchoring Steamer
OPTIONAL ACCESSORIES
Optional accessories such as stands and stacking
kit will include directions for assembly.
— 6 —
ELECTRICAL CONNECTIONS
To Control
Transformer *
To Control
Transformer *
3-PHASE, 208 V
3-PHASE, 240 V
1-PHASE, 208 V
1-PHASE, 240 V
B
BL
BR
YL
BL
BR
YL
21
24
21
22
23
24
25
26
22
25
23
26
BL
BR
YL
BL
BR
YL
A
B
A
*Primary taps of Control Transformer must be connected
according to the appliance data plate voltage marking and
actual connected supply.
To Control
Transformer *
3-PHASE, 380 V
3-PHASE, 415 V
3-PHASE, 480 V
B
BL
BR
YL
BL
BR
1CON L1 – T1
2CON T2 – L 2
1CON L2 – T2
2CON T3 –L3
2CON T1 –L1
1CON L3 - T 3
YL
21
22
23
A
*Primary taps of Control Transformer must be connected
according to the appliance data plate voltage marking and
actual connected supply.
To Control
Transformer *
To Control
Transformer *
3-PHASE, 208/240 V
1-PHASE, 208/240 V
B
BL
BR
YL
BL
BR
YL
21
24
21
22
23
24
25
26
22
25
23
26
BL
BR
YL
BL
BR
YL
GN
RD
OR
GN
RD
OR
GN
RD
OR
GN
RD
OR
A
B
A
*Primary taps of Control Transformer must be connected
according to the appliance data plate voltage marking and
actual connected supply.
** For operation from a 208 V supply, all 6 elements are to
be connected as shown. For 240 V supply, disconnect and
insulate element leads with Orange, Green and Red markers.
Not used for
240V operation **
: Electrical and grounding
connections must comply with the
applicable portions of the National
Electrical Code and/or other local
electrical codes.
When making electrical connections, use copper
wire suitable for at least 200°F (90°C). The
steamer must be grounded. The wiring diagram
is located on the inside of the right panel.
Steamers are wired for 3-phase and can be
converted to 1-phase by relocating the jumper
wires on the terminal block as shown on the
wiring diagram.
HC24EO SERIES STEAMER
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HC24EO SERIES STEAMER
ELECTRICAL DATA
Model Volts KW Amp @ Amp @
1 PH 3 PH
HC24EO3 208 8 38.5 22.2
240 8 33.3 19.2
HC24EO5 208 12 57.7 33.3
240 12 50.0 28.9
480 12 N/A 14.4
SERVICE CONNECTIONS
Water Connections
No water supply connections are required, as
the steamer is lled manually.
Water Treatment
A local water treatment specialist should
be consulted before installation of steam
generating equipment.
life. Water conditions vary from one location
to another. Ask your municipal water supplier
for details about your local water supply prior
to installation. Presence of sediment, silica,
excess chlorides or other dissolved solids may
lead to a recommendation for alternate form(s)
of water treatment. Test the water with the test
strip included with the steamer. Other factors
affecting steam generation are iron content,
amount of chloridation and dissolved gases.
Drain Connection
The C24EO can be congured to drain through
either the rear panel or through the bottom
base plate.
The unit is congured to be drained through the
rear panel from the factory. The unit is supplied
with a 12" length of 5/8" ID hose. If this length is
insufcient, remove the hose and install a new
hose ordered to the desired length. The factory
5
/8" ID silicone hose part number is 557475.
Hose is sold by the foot.
See Figure 3.
Hardness* No more than 3 grains
Silica less than 13 ppm
Total Chlorine less than 4.0 ppm
PH range 6.5 to 8
Undissolved Solids less than 5 microns
*17.1 ppm = 1 grain of hardness
If the water supply fails to meet these standards,
it will be necessary to install a water conditioner.
The use of strainers or lters will not remove
minerals from the water.
Water Requirements
Proper water quality can improve the taste of
the food prepared in the steamer, reduce liming
in the steam generator and extend equipment
Figure 3: Rear Panel Drain Connection
(Viewed with right side panel removed)
To eld congure the drain through the bottom
base plate, the 4" leg kit (part number 843889)
is required. Also required are a 1/2" NPT close
pipe nipple (11/8" long) and a 1/2" NPT 90°
elbow, which are available through local home
improvement or plumbing supply houses.
1. Remove right side panel.
2. Remove hose barb from drain.
3. Remove knockout from base plate.
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