Vulcan-Hart C24EO5, C24EO5AF, C24EO3AF Installation & Operation Manual
C24EO SERIES
STEAMER
MODEL ML
MANUAL FILL
INSTALLATION &
OPERATION MANUAL
C24EO3 ML-136006
C24EO5 ML-136007
AUTO-FILL TECHNOLOGY
C24EO3AF ML-152054
C24EO5AF ML-152055
For additional information on Vulcan or to locate an authorized parts
and service provider in your area, visit our website at www.vulcanequipment.com
VULCAN
DIVISION OF ITW FOOD EQUIPMENT GROUP, LLC
WWW.VULCANEQUIPMENT.COM
3600 NORTH POINT BLVD.
BALTIMORE, MD 21222
FORM F-37496 Rev. A (10-18)
C24EO 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.
IN THE EVENT OF A POWER FAILURE, DO NOT
ATTEMPT TO OPERATE THIS DEVICE.
© VULCAN, 2018
— 2 —
C24EO SERIES STEAMER
TABLE OF CONTENTS
INSTALLATION, OPERATION AND CARE OF MODEL C24EO SERIES STEAMERS ....................5
GENERAL ....................................................................................................................................5
INSTALLATION ............................................................................................................................5
UNPACKING................................................................................................................................5
INSTALLATION CODES AND STANDARDS ..............................................................................5
LOCATION...................................................................................................................................6
LEVELING FEET .........................................................................................................................6
LEVELING ...................................................................................................................................6
ANCHORING STEAMER ............................................................................................................6
OPTIONAL ACCESSORIES ........................................................................................................6
ELECTRICAL CONNECTIONS ...................................................................................................7
ELECTRICAL DATA .....................................................................................................................8
SERVICE CONNECTIONS .........................................................................................................8
Water Connections (Manual Fill Units) ..................................................................................8
Water Connections (Auto-Fill Units) ......................................................................................8
Water Requirements ..............................................................................................................8
Drain Connection ...................................................................................................................8
VENT HOOD ...............................................................................................................................9
BEFORE FIRST USE ..................................................................................................................9
INSTALLATION STARTUP PROCEDURE ..................................................................................9
Calibration Procedure ..........................................................................................................10
OPERATION ....................................................................................................................................12
CONTROLS ...............................................................................................................................12
OPERATING THE STEAMER ...................................................................................................12
LOW WATER .............................................................................................................................13
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
— 3 —
C24EO SERIES STEAMER
COOKING HINTS ............................................................................................................................18
ACCEPTABLE PAN SIZES .....................................................................................................18
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
— 4 —
C24EO SERIES STEAMER
INSTALLATION, OPERATION AND CARE OF
MODEL C24EO 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 C24EO3 Steamer is rated at 8.0 kW and
the C24EO5 Steamer is rated at 12.0 kW.
Model C24EO3 can accommodate three 2
deep (6.4 cm) steam pans. Model C24EO5
can accommodate fi ve 2
steam pans. The C24EO3 and C24EO5
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.
New to this product line are the C24EO3AF &
C24EO5AF Auto-Fill models. These models fi ll
the cavity with water automatically. The physical
dimensions, cooking instructions and electrical
specifi cations are the same as the standard
C24EO models.
1
/2" deep (6.4 cm)
1
/2"
INSTALLATION
Before installing, verify that the electrical supply
agrees with the specifi cations 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 Vulcan
immediately.
The C24EO3 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.
The C24EO5 is voltage specifi c. 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 fi eld converted to single 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.
— 5 —
C24EO SERIES STEAMER
LOCATION
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.
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
the rear as indicated in Figure 1. Unit should be
level side to side.
1
/16" to 1/8" higher than
ANCHORING STEAMER
1. Place steamer in the desired location on
the countertop and mark four corners.
Remove the steamer and drill
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
1
plus
/2" for proper thread engagement.
1
/2" holes as
Level the steamer front to back and side to side
by turning the adjustable feet.
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-S, 20
3-S, 20
1-S, 20
1-S, 20
21
2
21
22
23
2
2
2
22
2
23
2
rimary taps of Control Transformer must be connected
according to the appliance data plate voltage marking and
actual connected supply.
To Control
Transformer
3-S, 30
3-S, 1
3-S, 0
1C 1 T1
2C T2 2
1C 2 T2
2C T3 3
2C T1 1
1C 3 - T 3
21
22
23
rimary 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-S, 2020
1-S, 2020
21
2
21
22
23
2
2
2
22
2
23
2
rimary taps of Control Transformer must be connected
according to the appliance data plate voltage marking and
actual connected supply.
For operation from a 20 supply, all elements are to
be connected as shown. For 20 supply, disconnect and
insulate element leads with range, reen and ed markers.
ot used for
20 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.
C24EO SERIES STEAMER
— 7 —
C24EO SERIES STEAMER
ELECTRICAL DATA
Model Volts KW Amp @
1PH
C24EO3 208 8 38.5 22.2
240 8 33.3 19.2
C24EO5 208 12 57.7 33.3
240 12 50.0 28.9
480 12 N/A 14.4
Amp @
3 PH
SERVICE CONNECTIONS
Water Connections (Manual Fill Units)
No water supply connections are required, as
the steamer is fi lled manually.
Water Connections (Auto-Fill Units)
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. Presence of iron content,
amount of chloridation and dissolved gases could
aff ect the taste. Adding a carbon block fi lter to
the water inlet will improve taste.
Drain Connection
The C24EO can be confi gured to drain through
either the rear panel or through the bottom base
plate.
The unit is confi gured 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
insuffi cient, 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.
NOTE: Auto-Fill steamers will refi ll automatically
if the water level is low.
Connect the cold water supply line to the 3/4"
(19 mm) (male hose thread) inlet.
A manual shutoff valve must be provided in a
convenient location near the steamer.
The incoming water pressure must be 20 - 60
psig.
Cold Water
Connection
See Figure 3.
Figure 3: Rear Panel Drain Connection
(Viewed with right side panel removed)
To fi eld confi gure the drain through the bottom
base plate, the 4" leg kit (part number 843889) is
required. Also required are a
nipple (1
1
/8" long) and a 1/2" NPT 90° elbow, which
1
/2" NPT close pipe
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.
— 8 —
C24EO SERIES STEAMER
4. Install the 1/2" NPT close nipple (11/8" long)
into drain.
5. Install 1/2" NPT 90° elbow onto pipe nipple.
6. Re-use hose barb.
7. Install hose barb into elbow with clamp, cut
to desired length or route to drain.
Figure 4: Bottom Panel Drain Connection
(Viewed with right side panel removed)
NOTICE Do not connect steamer drain solidly
to any drain piping. The steamer drain must
vent to the atmosphere to avoid creating a back
pressure and possible back siphoning into the
compartment.
INSTALLATION STARTUP
PROCEDURE
: The steamer and its
parts are hot. Use care when operating,
cleaning or servicing the steamer. The
cooking compartment contains live steam
and hot water. Stay clear when opening
the door.
Once the steamer is installed, thoroughly test
the steamer before operation.
1. Check that the proper electrical connections
have been made.
NOTE: On Auto-Fill model, verify that the water
supply line has been connected properly.
The incoming water pressure to the
steamer needs to be 20 - 60 psig.
2. Close the drain valve by pushing the Drain
Handle in, located in the lower right hand
corner. On manual fi ll units, open the door and
pour water into the cooking compartment up
to the water level mark (the water level mark
is visible on the back wall of the steamer).
Do not overfi ll.
VENT HOOD
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 Removal
from Cooking Equipment, NFPA Standard No.
96 (latest edition).
BEFORE FIRST USE
Thoroughly clean the steamer before using for
the fi rst time. See the CLEANING section in
this manual.
— 9 —
Figure 5: Water Level Mark (Manual Fill)
3. Rotate the Timer to CONTINUOUS position.
Fully depress the Power Switch to the
ON
position. The Power Switch will turn
amber, indicating the unit is turned on.
C24EO SERIES STEAMER
4. With the door open, press in on the door
switch (small rod), located above the door
latch. The COOK light will come on. Release
the door switch and the COOK light will turn
off .
5. Close the compartment door and wait
approximately 10 minutes for unit to preheat.
6. Rotate the Timer to 5 minutes. The Timer
will not start counting down until the cavity
has reached preheat temperature.
7. When the timer returns to 0, a buzzer will
sound signaling the end of the cooking cycle.
To silence the buzzer, turn the Timer dial to
the OFF position.
8. To turn the steamer off :
a. Depress the Power Switch to
the OFF
b. Allow the steamer
position.
to cool.
c. Open the drain valve and drain the water
from the steamer.
d. Open the compartment door to allow the
inside to dry out.
ELEVATION (FT) DIGITAL THER-
MOMETER - °F (C)
Sea Level 210 (99)
1,000 208 (98)
2,000 206 (97)
3,000 204 (96)
4,000 202 (94)
5,000 200 (93)
6,000 198 (93)
7,000 196 (91)
8,000 195 (90)
9,000 or above 194 (90)
1. Remove right side panel.
2. Place a temperature probe approximately
one inch down in the center of steam vent
pipe.
3. Turn steamer on by selecting CONTINUOUS
mode.
4. Using the table above, fi nd the corresponding
temperature for the elevation and set the
Temperature Control.
CALIBRATION PROCEDURE
The right hand side panel must be removed
to access the temperature controller. To
achieve optimum steamer operation, rotate the
Temperature Control to the temperature that
corresponds to the elevation that it is located at.
NOTE: The steamer is preset at the factory to
sea level.
A handheld digital thermometer and thermocouple
are required.
NOTE: If temperature setting is too high, the
boiling action will be excessive and
cause water droplets to exit the steam
vent pipe resulting in high water usage.
Figure 6: Temperature Control
— 10 —
C24EO SERIES STEAMER
NOTE: Temperature Control is configured
by vendor to Fahrenheit and cannot
be changed to Celsius. The display
indicates set point temperature only.
a. Wait 3 seconds after releasing the knob
for the selection to be saved in memory.
Display will blink momentarily to indicate
temperature is saved.
b. Allow temperature to stabilize by
completing two heating cycles with door
closed.
NOTE: Temperature display on control is for
reference only. When calibrating, use
the recorded temperature from meter.
5. Record temperature reading from meter
when load light goes out.
6. Compare recorded temperature to the
temperature from table.
a. If recorded temperature is correct, no
adjustment is necessary.
b. If recorded temperature is not correct,
adjust temperature setting and re-check
the temperature reading with meter.
NOTE: If unit cannot be calibrated call your
Authorized Vulcan Servicer.
7. If correct temperature reading is not attained
after 3 attempts, call your Authorized Vulcan
Servicer.
— 11 —
C24EO SERIES STEAMER
OPERATION
CONTROLS
: The steamer and its
parts are hot. Use care when operating,
cleaning or servicing the steamer. The
cooking compartment contains live steam
and hot water. Stay clear when opening
the door.
TIMER
Overfill
Light
OVERFILL
OPERATING THE STEAMER
1. Push the drain lever in to close the drain
valve.
2. Open the door and pour water into the
cooking compartment up to the water level
mark. The water level mark is visible on the
back wall of the steamer. Unit capacity is 3
gallons. Do not overfi ll.
3. Close door.
NOTE: On Auto-Fill model, the unit will
automatically fi ll with water once the start
button is pressed. The steamer will fi ll
until water reaches the water level probe
located inside the cavity. If the door is
closed, the steamer will heat the water
during the initial fi ll cycle.
4. Verify Timer is in the OFF position.
5. Fully depress Power Switch to ON
position. Power light in switch will illuminate
amber.
Figure 7: Controls
Power Switch/Low Water Reset: Turns
unit OFF/ON/RESETS LOW WATER LIGHT/
ALARM.
Low Water Light: When lit, indicates additional
water is required.
Timer: Selects the desired cooking time or the
CONTINUOUS position.
COOK Light: When lit, indicates the timer is
set and door is closed.
OVERFILL Light: (Auto-Fill model only): When
lit, indicates a problem with the Auto-Fill function
(an audible alarm will sound in the event of an
overfi ll condition).
6. Set timer to 5 minutes. In approximately 15
minutes unit will be preheated and ready to
cook.
7. Set timer to desired time (0 to 60 minutes)
or to CONTINUOUS position.
8. At the end of the timed cycle an audible
alarm will sound.
9. The unit returns to the idle temperature.
NOTE: Timer will not function until preheat has
been completed.
— 12 —
C24EO SERIES STEAMER
LOW WATER
1. When the Low Water light is illuminated
the unit needs to be refi lled with water. An
audible alarm will sound.
2. Fully depress Power Switch to OFF
position.
3. Refi ll unit with water.
4. Close door.
5. Fully depress Power Switch to ON
position to cancel Low Water alarm.
6. Timer will resume when steamer reaches
cooking temperature.
NOTE: Refi ll the unit when not in use or during
slow times to avoid running out of water.
Running out of water during a cooking
cycle will lengthen cook time. This
comment does not apply to the Auto-Fill
model. If the low water light is on, refer
to the troubleshooting section.
SHUTDOWN
1. Rotate Timer to OFF position.
2. Fully depress Power Switch to OFF
position.
3. Allow steamer to cool.
4. Open the drain valve and drain the water
from steamer.
5. Open the compartment door to allow the
inside to dry.
6. Follow cleaning instructions in this manual.
EXTENDED SHUTDOWN
1. Fully depress Power Switch to OFF
position.
2. Clean the interior and exterior of unit.
3. Leave door open.
4. Disconnect power.
— 13 —
C24EO SERIES STEAMER
CLEANING
COOKING COMPARTMENT DRAIN
Remove any particles or debris that may be
blocking the drain. Make a solution of warm
water with non-chloride detergent and pour
1
/2 gallon (1.9 liters) of it down the compartment
drain. Rinse by pouring
hot water down the compartment drain.
1
/2 gallon (1.9 liters) of
Thoroughly clean the exposed surfaces (sides,
front, door and top) with a damp cloth and polish
with a clean cloth daily. To remove discolorations,
use a nonabrasive cleaner.
DOOR GASKET
Clean the gasket sealing surface of the
compartment door daily 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.
LEAVE COMPARTMENT DOOR OPEN
Figure 8: Oven Cavity
COMPARTMENT
The compartment, pan guides, and baffl e should
be cleaned daily. The exterior should be cleaned
daily.
Remove the pan guides by lifting up and out.
Wash with a solution of warm water with nonchloride detergent. Rinse with warm water.
Remove the baffl e from the compartment by
lifting up and out. Wash with a solution of warm
water with non-chloride detergent. Rinse with
warm water.
NOTE: Failure to reinstall baffl e after cleaning
will aff ect cooking performance.
Wash the inside of the compartment with
a solution of warm water with non-chloride
detergent. Rinse with warm water.
Leave the compartment door 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.
Figure 9: Leave Door Open
— 14 —
C24EO SERIES STEAMER
STAINLESS STEEL EQUIPMENT CARE
AND CLEANING
Contrary to popular belief, stainless steels
ARE susceptible to rusting.
Corrosion on metals is everywhere. It is
recognized quickly on iron and steel as unsightly
yellow/orange rust. Such metals are called
“active” because they actively corrode in a
natural environment when their atoms combine
with oxygen to form rust.
Stainless steels are passive metals because
they contain other metals, like chromium,
nickel and manganese, that stabilize the atoms.
400 series stainless steels are called ferritic,
contain chromium, and are magnetic; 300 series
stainless steels are called austenitic, containing
chromium and nickel; and 200 series stainless,
also austenitic, contains manganese, nitrogen
and carbon. Austenitic types of stainless are
not magnetic, and generally provide greater
resistance to corrosion than ferritic types.
With 12 to 30% chromium, an invisible passive
fi lm covers the steel’s surface acting as a shield
against corrosion. As long as the fi lm is intact
and not broken or contaminated, the metal is
passive and stainless. If the passive fi lm of
stainless steel has been broken, equipment
starts to corrode and starts to rust.
Enemies of Stainless Steel
There are three basic things which can break
down stainless steel’s passivity layer and allow
corrosion to occur.
1. Mechanical abrasion.
Water comes out of the faucet in varying degrees
of hardness. Depending on what part of the
country you live in, you may have hard or soft
water. Hard water may leave spots, and when
heated leaves deposits behind that if left to sit, will
break down the passive layer and rust stainless
steel. Other deposits from food preparation and
service must be properly removed.
Chlorides are found nearly everywhere. They
are in water, food and table salt. One of the worst
chloride perpetrators can come from household
and industrial cleaners.
So what does all this mean?
Don’t despair!
Here are a few steps that can help prevent
stainless steel rust.
1. Use the proper tools.
When cleaning stainless steel products, use
non-abrasive tools. Soft cloths and plastic
scouring pads will not harm steel’s passive
layer. Stainless steel pads also can be used
but the scrubbing motion must be in the
direction of the manufacturers’ polishing
marks.
2. Clean with the polish lines.
Some stainless steel comes with visible
polishing lines or grain. When visible lines
are present, always scrub in a motion parallel
to the lines. When the grain cannot be seen,
play it safe and use a soft cloth or plastic
scouring pad.
3. Use alkaline, alkaline chlorinated or nonchloride containing cleaners.
2. Deposits and water.
3. Chlorides.
Mechanical abrasion means those things that
will scratch a steel surface. Steel pads, wire
brushes and scrapers are prime examples.
While many traditional cleaners are loaded
with chlorides, the industry is providing
an ever-increasing choice of non-chloride
cleaners. If you are not sure of chloride
content in the cleaner used, contact your
cleaning supplier. If your present cleaner
contains chlorides, ask your supplier if
they have an alternative. Avoid cleaners
containing quaternary salts; it also can attack
stainless steel and cause pitting and rusting.
— 15 —
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