For additional information on Vulcan-Hart or to locate an authorized parts
and service provider in your area, visit our website at www.vulcanhart.com.
VULCAN-HART
DIVISION OF ITW FOOD EQUIPMENT GROUP, LLC
WWW.VULCANHART.COM
3600 NORTH POINT BLVD.
BALTIMORE, MD 21222
F35430 (05-07)
C24EA SERIES ELECTRIC CONVECTION STEAMERS
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.
IN THE EVENT OF A POWER FAILURE, DO NOT
ATTEMPT TO OPERATE THIS DEVICE.
— 2 —
C24EA SERIES ELECTRIC CONVECTION STEAMERS
INTRODUCTION
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 C24EA6 and C24EA10 convection steamers
are dual compartment, electric, pressureless
steam cookers with an internal electric steam
generator that maintains water temperature at
approximately 195° F. At 208V and 480V, the
C24EA6 is rated at 17.2kW, and the C24EA10 is
rated at 25.6kW. At 240V, the C24EA6 is rated
at 19.7kW, and the C24EA10 is rated at 26.4kW.
Model C24EA6 can accommodate three 2 1/2" deep
(6.4 cm) steam pans per compartment. Model
C24EA10 can accommodate five 2 1/2" deep (6.4
cm) steam pans per compartment. The C24EA6
and C24EA10 electric convection steamers are
designed for cooking vegetables, eggs and other
foods, in commercial kitchens. Each compartment
has a 0-60 minute timer, as well as a constant steam
feature. The buzzer requires manual shutoff. The
steamer is equipped with a cabinet base with flanged
feet for floor mounting.
full responsibility for safe delivery upon
acceptance of the shipment.
Immediately after unpacking, check for possible
shipping damage. If steamer damage is found,
save the packaging material and contact the
carrier within 15 days of delivery.
INSTALLATION CODES AND
STANDARDS
In the United States of America:
1. State and local Codes
2. National Fuel Gas Code, ANSI/z223.1/NFPA
#54(latest edition). Copies may be obtained
from The American Gas Association,
Accredited Standards Committee Z223@
400 N. Capital St. NW, Washington D.C.
2001 or the Secretary Standards Council,
NFPA, 1 Batterymarch Park, Quincy MA
02169-7471.
Note: In the Commonwealth of Massachusetts:
All gas appliances vented through a ventilation
hood or exhaust system equipped with a damper
or with a power means of exhaust shall comply
with 248 CMR.
INSTALLATION
Before installing, verify that the electrical supply
agrees with the specifications on the data plate
located on the front of the machine. If the supply
and equipment requirements do not agree, do
not proceed with the installation. Contact your
dealer or Vulcan-Hart immediately.
This unit is shipped pre-wired for 208/60/3 or
480/60/3. 240V and single-phase operation
require changes to the heater connection 240/
60/3, 240/60/1 and 208/60/1. This unit will operate
at 60Hz or 50Hz. Conversions must be made by
a Vulcan Hart authorized service technician.
UNPACKING
This steamer was inspected before leaving the
factory. The transportation company assumes
3. Vapor Removal from Cooking Equipment,
NFPA#96 (latest edition).
4. Copies may be obtained from The National
Fire Protection Association, 1 Batterymarch
Park, Quincy MA 02169-7471.
5. National Electrical Code, ANSI/NFPA-70
(latest edition). Copies may be obtained
from The National Fire Protection
Association, 1 Batterymarch Park, Quincy
MA 02169-7471.
In Canada, the steamer must be installed in
accordance with:
1. Local codes.
2. Canadian Electrical Code (CSA C22.2 No.3,
latest edition) available from the Canadian
Standards Association, 5060 Spectrum Way,
Mississauga, Ontario, Canada L4W 5N6.
— 3 —
C24EA SERIES ELECTRIC CONVECTION STEAMERS
LOCATION
Allow space for plumbing and electrical
connections. Minimum clearance is 6" (15.2 cm)
on the back for proper air circulation. Allow
adequate access for operating and servicing the
steamer: 36" (91.4 cm) at the front of the steamer,
15" (38 cm) above the steamer and 18" (45.7 cm)
on the right and left sides of the steamer.
LEVELING AND ANCHORING
Position the steamer in its final installed location.
Place a level on the horizontal area of the
cabinet. Adjust the feet to level the steamer in
both the left-to-right and front-to-rear directions.
Steamers should be elevated in the front just
enough, about
provide proper draining. Do this by rotating the
adjustable feet in the proper direction 1 to 1
turns after leveling. Check drainage in the
steamer compartments by pouring a small
amount of water in the compartment. All the
water should drain.
1
/16" to 1/8" (2 to 3 mm), to
1
/2
The feet have holes in the flanges for anchor bolts.
— 4 —
ELECTRICAL CONNECTION
C24EA SERIES ELECTRIC CONVECTION STEAMERS
WARNING: ELECTRICAL AND GROUNDING
CONNECTIONS MUST COMPLY WITH
APPLICABLE PORTIONS OF THE NATIONAL
ELECTRICAL CODE AND / OR OTHER
WARNING: DISCONNECT THE
ELECTRICAL POWER TO THE
MACHINE AND FOLLOW LOCKOUT /
TAGOUT PROCEDURES.
LOCAL ELECTRICAL CODES.
The wiring diagram is locatedinside the front panel.
COMPLY WITH APPLICABLE SANITARY,
SAFETY AND PLUMBING CODES.
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
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.
Water Treatment
Water Supply Connection
Connect the treated cold water supply line to
3
the
/4" (19 mm) (male hose thread) inlet.
Connect the untreated cold water supply line to
3
the
/4" (19 mm) (male hose thread) inlet marked
UNTREATED WATER.
A water filter system is recommended for the
water supply line going to the treated water
inlet. Follow the recommendations for use and
installation instructions shipped with the water
filter. If a water filter is not installed, the steam
generator warranty may be limited.
A manual shutoff valve must be provided in a
convenient location near the steamer.
Filter System
If you decide to not install a scale-reducing filter
system designed for steam equipment or use
another manufacturer’s system other than that
recommended by Vulcan Hart, please use these
guidelines.
A local water treatment specialist should be
consulted before installation of steam generating
equipment.
Supply Pressure20 - 60 psig
Hardness*No more than 3 grains
Silicaless than 13 ppm
Total Chlorineless than 4.0 ppm
PH range6.5 - 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 on
the generator water feed. The use of strainers or
filters will not remove minerals from the water.
•If you are going to delime the unit with a
deliming agent recommended for a
pressure steam boiler and stainless steel
generators, and you are on city or treated
well water, you still must have a carbon
block filter installed and maintained.
Carbon block filters remove the chlorine
and chloramine disinfectants from the
water. Chlorine and chloramines will
erode the boiler or steam generator and
will result in a vessel failure, which is not
covered under warranty.
•Water feed lines to the steamer must be
flushed before final connection. Particles
in the water could build up in the water
and steam valves or clog tubing and
components that maintain the water level
and pressure in the boiler or steam
generator. If the water supply is not free of
sediment or is cloudy after several
minutes of flushing, a sediment filter must
be installed before use.
— 6 —
•If you have purchased a water filtration
system from Vulcan Hart, please follow
the instructions provided with the water
filtration system. At the time of installation
you must register your steamer at
www.vulcanhart.com/filterreg or use the
reply card supplied with your unit. You will
need to register your steamer at each
filter change to ensure your standard and
extended warranty is maintained.
Drain Connection
1
The 1
/2" NPT threaded fitting on the condenser
box must be extended a minimum of 12" (305
mm) - maximum of 72" (1829 mm) away from
steamer base, to an open air gap type drain (see
Figure 1). Do not reduce the 1
1
/2" NPT drain
piping throughout its length. Provide a suitable
floor sink with a minimum depth of 12" (305
mm). The floor sink is NOT to be directly under
the steamer and should be at a distance so that
steam vapors will not enter the steamer from
underneath. The drain should slope down away
from the steamer
1
/4" for every foot of drain pipe
length. The drain pipe should be either iron or
copper. DO NOT use PVC pipe; PVC pipe may
lose its rigidity or glue may fail. A 1
1
/2" air gap is
required for the drain.
C24EA SERIES ELECTRIC CONVECTION STEAMERS
Figure 1
Temperatures in the drain can briefly reach as
high as 212° F (100°C). Local codes may require
that the temperature of drain water be no greater
than 140°F (60°C). At the end of the day, when
purging the generator, some provision for
lowering the water temperature must be provided
by the user or installer to meet this code
requirement.
VENT HOOD
CAUTION: In order to avoid any back
pressure in the steamer, do
not make a solid connection to
any drain. FAILURE TO DO SO
CAN DAMAGE THE STEAMER
AND VOIDS THE WARRANTY.
Local codes may require the steamer to be
located under an exhaust hood. Information on
the construction and installation of ventilating
hoods may be obtained from Vapor Removalfrom Cooking Equipment, NFPA standard No.
96 (latest edition).
— 7 —
C24EA SERIES ELECTRIC CONVECTION STEAMERS
STARTUP
WARNING: THE STEAMER AND ITS PARTS
ARE HOT. USE CARE WHEN OPERATING,
CLEANING OR SERVICING THE STEAMER.
THE COOKING COMPARTMENT CONTAINS
LIVE STEAM. STAY CLEAR WHILE OPENING
DOOR.
Once the steamer is installed and all mechanical
connections have been made, thoroughly test
the steamer before operation.
1. Check that proper water, drain, and electrical
connections have been made.
2. Press the power switch to the on position.
After approximately 15 minutes, the ready
light should come on, indicating that the
generator has reached operating pressure.
3. Open the door, set the timer to 5 minutes,
and observe that no steam is entering the
compartment, and that the ready light is on
and the cooking light is off.
4. Close the compartment door. The cooking
and ready lights should now be lit, and
steam should be heard entering the
compartment.
5. Check the drain line to be sure that water
from the cold water condensate valve is
flowing through the drain line.
6. Open the compartment door and observe
that steam supply to the compartment stops,
and that the cooking light turns off.
7. Close the compartment door and let the
cooking cycle finish. When the timer returns
to the 0 position, a buzzer will sound and the
cooking light will turn off, signaling the end
of the cooking cycle. To silence the buzzer,
turn the timer dial to the OFF position.
8. Complete steps 3-7 for each cooking
compartment.
9. Press the power switch to the off position.
Leave the compartment doors slightly open
to allow the inside to dry out.
— 8 —
OPERATION
C24EA SERIES ELECTRIC CONVECTION STEAMERS
WARNING: THE STEAMER AND ITS
PARTS ARE HOT. USE CARE WHEN
OPERATING, CLEANING OR SERVICING
THE STEAMER. THE COOKING
COMPARTMENT CONTAINS LIVE STEAM.
STAY CLEAR WHILE OPENING DOOR.
CONTROLS AND INDICATORS
The upper section of the steamer consists of
two cooking compartments. Each compartment
functions independently with its own controls
(see Figure 2), and is a separate, sealed steam
chamber during the cooking operation.
COOK Light (Red)
When lit, indicates steamer is in the cooking
phase.
Power On/Off Switch (Bottom
Compartment Only)
Power on/off switch with indicator light.
DELIME Switch (Bottom Compartment Only)
Automatically activates deliming process.
PREHEATING
Preheat the cooking cavity when the steamer is
first used for the day or whenever the
compartment is cold. Keep the door closed
during the preheat cycle.
•Turn the power switch to ON, and set the
timer to 10 minutes to preheat the
compartment.
•When the buzzer sounds, turn the timer to the
OFF position. The steamer is ready to cook.
Figure 2. Controls and Indicators
(Bottom Compartment Only)
Note: Upper Compartment Control Panel does
not contain a Power Switch, Power
Indicator Light or Delime Swtich.
Timer
Used to set desired cooking cycle time. Timer
range is 0-60 minutes or constant steam. Turn
to the OFF position to silence the buzzer.
READY Light (Green)
When lit, indicates steamer is ready for the
cooking cycle.
STEAMING
Each steaming compartment has its own controls.
With the green READY light lit and the
compartments preheated, the steamer is ready
for use.
1. Open the compartment door.
2. Place pans of food to be cooked into the
compartment and shut the door.
3. Set the timer to the desired cooking time.
Steaming begins. The red COOK light will
turn on.
4. The cooking cycle may be interrupted at any
time by opening the compartment door.
Close the door to resume cooking.
5. When the buzzer sounds, the timed steaming
cycle has finished. Steaming stops, and the
COOK light turns off. To silence the buzzer,
turn the timer to the OFF position.
Refer to Steam Cooking with Vulcan Kettles andSteamers (packed with your steamer) for
— 9 —
C24EA SERIES ELECTRIC CONVECTION STEAMERS
suggested cooking times. Also refer to the
COOKING GUILDELINES in this manual. Size,
weight, pan loading and product quality will
affect cooking times and should be adjusted to
your own requirements.
DAILY SHUTDOWN
1. Press the power switch to the OFF position.
2. Clean the compartment(s).
EXTENDED SHUTDOWN
1. Press the power switch to the OFF position.
2. Allow to drain completely.
3. Turn off main power supply.
4. Turn off water supply.
5. Thoroughly clean cavities, door seals, etc.
— 10 —
CLEANING
C24EA SERIES ELECTRIC CONVECTION STEAMERS
WARNING: DISCONNECT THE
ELECTRICAL POWER TO
THE MACHINE AND FOLLOW LOCKOUT /
TAGOUT PROCEDURES BEFORE
CLEANING.
COOKING COMPARTMENT DRAINS
Keep compartment drains running freely. Inspect
compartment drains daily for blockage. Remove
any particles or debris from the perforated
strainer daily (or more often if needed).
After cooking greasy foods or seafood, close the
doors and operate each compartment for 25 to 30
minutes to flush any residual grease and oils
down the compartment drain. Make a solution of
warm water and non-chloride/chlorine/bleach
based detergent and pour
it down each compartment drain. Rinse by pouring
1
/2 gallon (1.9 liters) of hot water down each
compartment drain.
1
/2 gallon (1.9 liters) of
DRAINING THE GENERATOR
COMPARTMENTS
Wash the inside of the compartment with a
solution of warm water and non-chloride
detergent. Rinse with warm water.
Once a week, thoroughly clean the exposed
surfaces (sides, front, door and top) with a damp
cloth and polish with a clean cloth. To remove
discolorations, use a nonabrasive cleaner.
DOOR GASKETS
Clean the gasket-sealing surface of the
compartment doors to remove food acids for
maximum gasket life. Do not use any solvents or
sharp instruments. Wash with a cloth moistened
in a solution of mild detergent and warm water.
Rinse with a fresh cloth moistened with warm
water to remove all traces of detergent.
Wipe dry with a clean cloth. Never apply food
oils or petroleum lubricants directly to the door
gasket. Petroleum-based solvents and
lubricants will reduce gasket life.
To prevent malfunction of controls and clogging,
it is essential to drain the generator every day.
This will flush out any accumulated minerals
from the feed water. It will also aid in preventing
internal scale buildup which would interfere with
proper generator operation. Failure to drain the
generator every day will void the steamer
warranty. The presence of minerals in
suspension is indicated by a murky or milky
condition in the first portion of the water drained.
WARNING: THE WATER BEING DRAINED IS
HOT AND UNDER PRESSURE.
WHEN CLEANING OR SERVICING THE
GENERATOR.
After the generator has been in operation, turn
the unit off with the power switch located on the
bottom cooking compartment to drain the
generator. The generator will drain for
approximately 5 minutes, removing sediment,
scale and lime buiIdup in the generator.
USE CARE
LEAVE COMPARTMENT DOORS OPEN
Leave the compartment doors slightly open
when the steamer is not in use. When the
compartment is idle, never latch the door and
apply pressure to the door gasket. Leaving the
gasket under pressure can cause permanent
deformation and reduce gasket life.
GUIDELINES FOR MAINTAINING
STAINLESS STEEL SURFACES
There are four things that will break down
stainless steel and allow corrosion to develop:
1) Abrasion
2) Deposits
3) Water
4) Chlorides.
— 11 —
C24EA SERIES ELECTRIC CONVECTION STEAMERS
Avoid rubbing with steel pads, wire brushes or
scrapers that can leave iron deposits on stainless
steel. Instead, use plastic scouring pads or soft
cloths. For stubborn stains, use products such as
Cameo
TM
, talc or Zud First ImpressionTM. Always
rub parallel to the polish lines or with the grain.
Hard water will leave deposits that promote rust
on stainless steel. Treated water from softeners
or certain filters can eliminate these mineral
deposits. Other deposits from food or lubrication
must be properly removed by cleaning. Use
mild detergent and non-chloride/chlorine/bleach
based cleaners. Rinse thoroughly and wipe dry.
Where appropriate, apply a polish recommended
for stainless steel (such as Benefit
Sheen
TM
) for extra protection and luster.
TM
or Super
— 12 —
C24EA SERIES ELECTRIC CONVECTION STEAMERS
MAINTENANCE
WARNING: THE STEAMER AND ITS PARTS
ARE HOT. USE CARE WHEN OPERATING,
CLEANING OR SERVICING THE STEAMER.
THE COOKING COMPARTMENT CONTAINS
LIVE STEAM. STAY CLEAR WHILE OPENING
DOOR.
WATER TREATMENT SYSTEM
A water treatment system is recommended for
the steamer. Refer to your supplier’s manual for
normal maintenance procedures for proper
scale-free operation.
REMOVAL OF LIME SCALE DEPOSITS
The steamer should be delimed when symptoms
occur (see Troubleshooting Chart). This is in
accordance with the minimum preventive
maintenance schedule required by the Warranty.
Items Required (not provided)
•Deliming material (Recommend "Scale
Release")
•Funnel
•Plastic or rubber gloves
•Safety goggles or face shield
•Measuring cup
•1-gallon container for mixing deliming
solution
•Petrol-Gel Lubricant or equivalent foodgrade grease for coating deliming port
threads
Note: Deliming solution may cause the surface
of aluminum measuring tools to tarnish
or etch.
WARNING: READ AND FOLLOW THE
INSTRUCTIONS ON THE DELIMING
MATERIAL PACKAGE. AVOID CONTACT
WITH SKIN AND EYES. WEAR PLASTIC OR
RUBBER GLOVES AND SAFETY GOGGLES
WHEN HANDLING. WASH THOROUGHLY
AFTER HANDLING. IF DELIMING
SOLUTION COMES IN CONTACT
SKIN OR EYES, RINSE THOROUGHLY WITH
CLEAN WATER.
WARNING: THE STEAMER AND ITS PARTS
ARE HOT. USE CARE WHEN OPERATING,
CLEANING OR SERVICING THE STEAMER.
THE COOKING COMPARTMENT CONTAINS
LIVE STEAM. STAY CLEAR WHEN OPENING
DOOR.
Note: The capacity of the generator/
superheater is approximately 8.1 gallons.
WITH THE
Deliming Procedure
Note: This procedures is not intended to take
the place of a water treatment program.
1. Press the power switch to off. Wait 5 minutes
for steam generator to completely drain and
the drain valve to close.
2. Turn cooking timers to OFF.
3. Prepare deliming solution according to the
instructions on the deliming material package.
Follow all manufacturers’ instructions. The
generator and superheater capacity is
approximately 8.1 gallons.
4. Remove delime port cap located on the front
ledge beneath the lower compartment and
insert a funnel into the delime port (Figure 3).
— 13 —
C24EA SERIES ELECTRIC CONVECTION STEAMERS
Note: Lights will illuminate on the delime switch
and on the power switch, indicating that
the deliming cycle has begun. The cycle
will take about 60 minutes to complete.
As the deliming cycle nears completion, the
light on the power switch will turn off. Once the
generator has completely drained, the light on
the delime switch will turn off. This completes
the deliming cycle.
9. It is necessary to rinse the generator of any
residual deliming solution. To rinse the
generator simply repeat step 8, wait at least
10 minutes, and press the delime switch to
the off/bottom position. The machine will
then go through a drain cycle.
Figure 3. Deliming port location
5. Pour deliming solution into the steam
generator slowly to avoid spillage.
6. Remove funnel from delime port then rinse
port and surrounding area with clean water.
Wipe dry.
7. Lightly coat delime port threads with PetrolGel then install delime port cap. Cap must be
installed and tightened securely at all times.
8. Press and hold the delime switch to DELIME
position until the DELIME light comes on
(approx. 3 seconds).
10. The steamer is ready for operation or
shutdown.
Door Gasket
If the door gasket is leaking due to a nick or cut,
it must be replaced. Damage to the gasket
sealing surface will cause steam leakage.
Draining Generator
Drain the generator at the end of each day to
flush out minerals and minimize scale buildup.
The generator drains automatically for
approximately 5 minutes after the power switch
is turned to off.
— 14 —
C24EA SERIES ELECTRIC CONVECTION STEAMERS
COOKING GUIDELINES
The steamer steam cooks vegetables,
frankfurters, eggs in their shells, and certain other
meats or food items at atmospheric pressure.
These cooking guidelines are suggestions only.
You should experiment with your food products
to determine the cooking times that will give you
the best results. Variables which affect cooking
time include size, weight, thickness of foods,
temperature, density, previous condition of the
foods (fresh, pre-blanched or frozen) and degree
of doneness desired.
PRODUCTS TO BE COOKED IN SOLID PANS
PRODUCTTIME (MINUTES)QUANTITY PER PAN
Eggs, Scrambled9 - 128 Doz.
Rice, Long Grain (Cover with 4 cups water/lb.)23 - 252 Lb.
Refer to symptom WATER NOT
BEING SUPPLIED TO
STEAMER.
Descale the steamer (see
REMOVAL OF LIME SCALE
DEPOSITS).
Check door gasket for damage.
If adjustment is needed, contact
your Authorized Vulcan-Hart
Servicer.
Water accumulates in
compartment
Water not being supplied
to generator
Damage to gasket sealing surface
Plugged drain or screen
Unit not leveled properly
Drain clogged
Water supply valve is off
Water pressure low
Water filter is plugged
Valve inlet screen clogged
Clear compartment cavity screen.
If symptom persists, contact your
Authorized Vulcan-Hart Servicer.
See leveling instructions in the
INSTALLATION section of this
manual.
Unclog drain.
Turn valve on.
Check water supply pressure.
Refer to water filter manual. If
symptom persists, contact your
Authorized Vulcan-Hart Servicer.
Contact your Authorized VulcanHart Servicer.
Steam is exiting from under
steamer
Generator pressure is too high
— 18 —
Contact your Authorized VulcanHart Servicer.
NOTES
C24EA SERIES ELECTRIC CONVECTION STEAMERS
— 19 —
C24EA SERIES ELECTRIC CONVECTION STEAMERS
SERVICE AND PARTS INFORMATION
To obtain service and parts information concerning this steamer, contact the Vulcan-Hart Service
Agency in your area (refer to listing supplied with the steamer), or contact the Vulcan-Hart Service
Department at the address or phone number shown on the front cover of this manual. Parts and service
are also available at www.vulcanhart.com.
F35430 (05-07)
— 20 —
PRINTED IN U.S.A.
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