Vulcan Hart Electric Steamer ML 136056 User Manual

INSTALLATION &  
OPERATION MANUAL  
C24GA SERIES  
GAS CONVECTION  
STEAMERS  
MODELS  
C24GA6  
C24GA10  
ML-136021  
ML-136022  
Models manufactured after June 2006  
C24GA6  
C24GA10  
ML-136056  
ML-136057  
For additional information on Vulcan-Hart or to locate an authorized parts  
VULCAN-HART  
3600 NORTH POINT BLVD.  
BALTIMORE, MD 21222  
DIVISION OF ITW FOOD EQUIPMENT GROUP, LLC  
WWW.VULCANHART.COM  
F-35423 Rev B. (10-07)  
 
C24GA SERIES GAS CONVECTION STEAMERS  
INTRODUCTION  
GENERAL  
INSTALLATION  
Vulcan convection steamers are produced  
with quality workmanship and material. Proper  
installation, usage and maintenance will result  
in many years of satisfactory performance.  
INSTALLER: A manometer (digital or incline  
tube) capable of reading pressure in 0.01"  
W.C. is required to install this steamer. Failure  
to set blower air and gas pressure correctly  
will result in burner and lighting failure.  
It is suggested that you thoroughly read this  
entire manual and carefully follow all of the  
instructions provided.  
Before installing, verify that the type of gas  
(natural or propane) and the electrical supply  
required agree with the specifications on the  
data plate located on the left edge of the  
tabletop. If the supply and equipment  
requirements do not agree, do not proceed  
with the installation. Contact your dealer or  
Vulcan-Hart immediately.  
Model C24GA6 can accommodate three  
21/2" deep (64 mm) steam pans per  
compartment. Model C24GA10 can  
accommodate five 21/2" deep (64 mm) steam  
pans per compartment.  
The C24GA6 and C24GA10 gas-fired  
convection steamers are designed for cooking  
vegetables, eggs, and other foods, in  
commercial kitchens. Each compartment has  
a 0 to 60 minute timer. (The buzzer requires  
manual shutoff.) The steamers are equipped  
with a cabinet base for floor installation.  
INSTALLATION CODES  
AND STANDARDS  
The Vulcan steamer must be installed in  
accordance with:  
In the United States of America:  
1. State and local codes.  
C24GA6  
C24GA10  
Compartments  
2
2
2. National Fuel Gas Code, ANSI-Z223.1/  
NFPA #54 (latest edition). Copies may be  
obtained from The American Gas  
Association Accredited Standards  
CommitteeZ223, @400N. CapitalSt. NW,  
Washington, DC 20001, or the Secretary  
Standards Council, NFPA, 1 Batterymarch  
Park Quincy, MA 02169-7471.  
Total Number of  
21/2" (64 mm)  
Deep Pans  
6
10  
Gas Rating  
125,000  
BTU/hr.  
125,000  
BTU/hr.  
UNPACKING  
3. NFPA Standard # 96 Vapor Removal from  
Cooking Equipment, latest edition,  
available from the National Fire Protection  
Association, Batterymarch Park, Quincy,  
MA 02269.  
This steamer was inspected and tested before  
leaving the factory. The transportation  
company assumes full responsibility for safe  
delivery upon acceptance of the shipment.  
4. 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.  
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.  
— 3 —  
 
C24GA SERIES GAS CONVECTION STEAMERS  
In Canada:  
An exhaust system should be located directly  
above the steamer to exhaust steam, flue  
exhaust and heat generated by the steamer.  
1. Local codes.  
2. CAN/CSA-B149.1 Natural Gas Installation  
(latest edition).  
Do not locate the steamer directly over a  
drain.  
3. CAN/CSA-B149.2PropaneInstallationCode  
(latest edition), available from the Canadian  
Gas Association, 178 Rexdale Blvd.,  
Etobicoke, Ontario, Canada M9W 1R3.  
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.  
LOCATION - GAS STEAMERS  
The equipment area must be kept free and  
clear of combustible substances.  
Steamers should be elevated in the front just  
The recommended clearance for proper  
operation is 36" (914 mm) at the front. The  
required clearance from combustible or non-  
combustible construction is 0" at the sides  
and back. The recommended clearance for  
service access is 18" (457 mm) at the sides  
and 6" (152 mm) from the back.  
1
1
enough, about /16" to /8" (2 to 3mm) to give  
proper draining. Do this by rotating the  
adjustable feet in the proper direction 1 to 1½  
turns after leveling. Check drainage in the  
steamer compartments by pouring a small  
amount of water in the compartment. All the  
water should drain.  
Make sure there is an adequate supply of air  
in the room to replace air taken out by the  
ventilating system. If you have any questions,  
contact the ventilation system installer.  
The rear feet have holes in the flanges for  
anchor bolts.  
— 4 —  
 
C24GA SERIES GAS CONVECTION STEAMERS  
Water Supply Connection  
PLUMBING CONNECTIONS  
Plumbing connections  
must comply with applicable sanitary,  
safety and plumbing codes.  
Connect the treated cold water supply line to  
3
the /8" NPT inlet at the rear of the steamer.  
Connect the untreated cold water supply line  
to the 1/8" NPT, also at the rear of the steamer.  
Water Requirements  
Note: Models manufactured after June 2006  
may have ¾" hose connections.  
Proper water quality can improve the taste of  
the food prepared in the steamer, reduce  
liming in the steam generator and extend  
equipment life. Local water conditions vary  
from one location to another. Ask your  
municipal water supplier for details about your  
local water supply prior to installation.  
A water filter system is recommended for the  
water supply line going to the treated water inlet  
of your steamer. Follow the recommendations  
for use and installation instructions shipped  
with the water filter. If a water filter is not  
installed, the steamer or steam generator  
warranty will be limited.  
Presence of sediment, silica, excess chlorides  
or other dissolved solids may lead to a  
recommendation for alternate form(s) of water  
treatment.TestthewaterwithaTDSmeterorthe  
teststripincludedwiththesteamer.Otherfactors  
affecting steam generation are iron content,  
amount of chloridation and dissolved gases.  
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 recommended by Vulcan Hart, please  
use these guide lines.  
Water Treatment  
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 chloramines 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.  
A local water treatment specialist should be  
consulted before installation of steam  
generating equipment.  
Supply Pressure  
Hardness*  
20 - 60 psig  
less than 3 grains  
less than 13 ppm  
less than 4.0 ppm  
Silica  
Total Chlorine  
PH range  
7 - 8  
Undissolved Solids  
less than 5  
microns  
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 cloudy after several minutes  
of flushing, a sediment filter must be  
installed before use.  
*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 have purchased water filter system  
from Vulcan Hart, please follow the  
— 5 —  
 
C24GA SERIES GAS CONVECTION STEAMERS  
instructions provided with the filter system.  
At the time of installation you must register  
filterreg or use the reply card supplied  
with your unit. You will need to register  
yoursteamerateachfilterchangetoinsure  
your standard and extended warranty is  
maintained.  
GAS SUPPLY CONNECTION  
All gas supply connections and any pipe joint  
compound used must be resistant to the action  
of propane gas. A ¾" NPT minimum inside  
diameter gas supply line is required. If quick  
disconnect devices are used, make sure it is  
sized properly for data plate BTU/hr. rating.  
Refer to quick connect supplier’s data sheet.  
Codes require that a manual gas shutoff valve  
be installed in the gas line ahead of the  
steamer.  
Drain Connection  
The1½"NPTthreadedfittingonthecondenser  
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.  
Do not reduce the 1 ½" 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 ¼" 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.  
The gas line must be capable of delivering gas  
to the generator without excessive pressure  
drop at the minimum rate specified on the  
rating plate.  
Check blower air pressure at gas manifold  
pressure tap by shutting off the gas valve. Air  
pressure at cold start-up should be 0.35" W.C.  
(0.09 kPa) (cold condition). After 15 minutes,  
air pressure should be between 0.40" W.C.  
(0.1 kPa) and 0.50" W.C. (0.13 kPa) (hot  
condition). Turn the air pressure adjust screw  
clockwise to increase pressure and  
counterclockwise to reduce pressure.  
In order to avoid any back pressure in the  
steamer, do not connect solidly to any drain  
connection.  
Gas Input:  
Natural:  
¾" NPT  
_
5" 10.5" W.C.  
_
Propane:  
11" 13" W.C.  
Temperatures in the generator can briefly  
reach as high as 212°F (l00°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 generators,  
some provision for lowering the water  
temperature must be provided by the user or  
installer to meet this code requirement.  
Inadequate gas supply could result in burner  
noise and poor burner performance.  
Refer to the instruction manual supplied with  
the machine for INSTALLATION CODES AND  
STANDARDS and GAS CONNECTION  
information.  
— 6 —  
 
C24GA SERIES GAS CONVECTION STEAMERS  
connector beyond a U shape. Flexing  
the gas connector as described will  
restrict gas flow or may damage the  
connector.  
Changing a flexible gas connector may raise  
the BTU/hr. flow capacity enough to allow the  
machine to operate within its design  
specifications. (i.e. Removing the quick  
disconnect fitting, installing a shorter gas  
connector or installing a larger diameter gas  
connector.)  
An alternative may be to move the equipment  
to a different gas supply location in the kitchen.  
(i.e. Closer to the main supply into the kitchen  
or away from other equipment with high  
BTU/hr. input requirements.)  
Air˚Pressure˚  
Adjust˚Screw  
On˚Side˚of˚  
Drip˚Cover  
Figure 1  
The proper sizing and installation of the gas  
connection is important for the machine to  
operate within its design specifications. In  
some installations, the gas supply may not be  
sufficientenoughtoallowallthegasequipment  
to operate properly at peak loads; or when  
other equipment with a high BTU/hr. input  
requirement is operating. The connection to  
the machine becomes even more important in  
this type of location.  
Flexible gas connectors with quick disconnect  
orswivelfittings(whenused)andgasconnectors  
beyond the length necessary will reduce the  
BTU/hr. flow capacity to the machine.  
Note: Do not use corrugated stainless steel  
tubing for commercial gas equipment  
supply connections.  
Note: A straight gas connection is the ideal  
condition for the rated BTU/hr. flow  
capacity of the connector. If a straight  
connection is not possible and a  
flexible gas connector is used, do not  
twist, kink or excessively flex the  
Figure 3  
The generator is equipped with a factory-  
preset pressure regulator. Natural gas  
pressure regulators are preset for 2.5" W.C.  
(0.62 kPa). Propane gas pressure regulators  
— 7 —  
 
C24GA SERIES GAS CONVECTION STEAMERS  
Gas Connection Data  
1, 2  
FLEXIBLE GAS CONNECTORS BTU/hr. FLOW CAPACITY  
3
3
LENGTH  
LENGTH  
End Fittings - Both Threaded  
End Fittings - (1) Quick Disconnect  
& (1) Threaded  
ID  
½"  
¾"  
1"  
36"  
48"  
60"  
72"  
36"  
48"  
60"  
72"  
77,000  
68,000  
60,000  
55,000  
120,000 106,000  
93,000  
86,000  
218,000 180,000 158,000 139,000 256,000 225,000 198,000 175,000  
379,000 334,000 294,000 279,000 512,000 451,000 397,000 350,000  
615,000 541,000 476,000 419,000 946,000 833,000 733,000 645,000  
1¼"  
1. Flow rating BTU/hr. 0.64 SP. GR @ 0.5 inch W.C. pressure drop.  
2. BTU/hr. flow capacities are based on Dormont Mfg. Co. Supr-Safe gas line connectors and  
are provided for reference. Additional quick disconnect fittings, swivels, or manual shut off  
valves will reduce the BTU/hr. flow capacities listed in this table. If other flexible gas  
connectors are used, check the manufacturer’s specifications for BTU/hr. flow capacities.  
Supr-Safe is a registered trademark of the Dormont Manufacturing Company.  
3. The maximum length for a flexible gas connector is 72" per National Fuel Code standards.  
1, 2, 3  
BLACK IRON PIPE BTU/hr. FLOW CAPACITY  
Natural Gas  
Nominal Inside Diameter of Pipe  
Pipe Length  
½"  
¾"  
1"  
1¼"  
1½"  
2"  
15'  
30'  
45'  
60'  
75'  
90'  
76,000  
52,000  
43,000  
38,000  
172,000  
120,000  
99,000  
86,000  
77,000  
70,000  
345,000  
241,000  
199,000  
173,000  
155,000  
141,000  
750,000  
535,000  
435,000  
380,000  
345,000  
310,000  
1,220,000  
850,000  
700,000  
610,000  
545,000  
490,000  
2,480,000  
1,780,000  
1,475,000  
1,290,000  
1,120,000  
1,000,000  
1. Flow rating BTU/hr. 0.64 SP. GR @ 0.3 inch W.C. pressure drop.  
2. BTU/hr. flow capacities are based on Schedule 40 pipe, include a tolerance for pressure  
losses in gas piping systems are provided for reference.  
3. Count each 90° elbow as 3' of gas pipe for the purpose of calculating total pipe length.  
— 8 —  
 
C24GA SERIES GAS CONVECTION STEAMERS  
are preset for 10" W.C. (2.46 kPa). No further  
adjustment should be required. Check gas  
pressures with a manometer at time of  
installation to verify that they agree with the  
pressures specified.  
FLUE GAS EXHAUST  
DO NOT obstruct the flow of flue gases from  
the flue located on the rear of the steamer.  
It is recommended that the flue gases be  
vented to the outside of the building through  
a ventilation system installed by qualified  
personnel.  
Prior to lighting, check all  
joints in the gas supply line for leaks. Use  
soap and water solution. Do not use an  
open flame.  
Informationontheconstructionandinstallation  
of ventilating hoods may be obtained from  
Vapor Removal from Cooking Equipment,  
NFPA-96 (latest edition) available from the  
National Fire Protection Association,  
Batterymarch Park, Quincy, MA 02269.  
A. Check all joints prior to the gas valve  
(solenoid) before lighting unit.  
B. Check all joints beyond gas valve  
(solenoid) after unit is lit.  
After piping has been checked for leaks, all  
piping receiving gas should be fully purged to  
remove air.  
Testing the Gas Supply System  
When the gas supply pressure exceeds  
1
/
2
psig(3.45kPa),thesteameranditsindividual  
manualgasshutoffvalvemustbedisconnected  
from the gas supply piping system.  
When the gas supply pressure is ½ psig  
(3.45 kPa) or less, the steamer should be  
isolated from the gas supply system by closing  
its individual manual gas shutoff valve.  
— 9 —  
 
C24GA SERIES GAS CONVECTION STEAMERS  
ELECTRICAL CONNECTION  
START UP  
Appliances equipped with  
a flexible electric supply cord are pro-  
vided with a three-prong grounding plug.  
It is imperative that this plug be con-  
nected into a properly grounded three-  
prong receptacle. If the receptacle is not  
the proper grounding type, contact an  
electrician. Do not remove the grounding  
prong from this plug.  
The steamer and its parts  
are hot. Use care when operating, clean-  
ing or servicing the steamer.  
The cooking compartment  
contains live steam. Stay clear when  
opening each door.  
Once the steamer is installed and all  
mechanical connections have been made,  
thoroughly test the steamer before operation.  
Electrical and grounding  
connections must comply with the appli-  
cable portions of the national electrical  
code and/or other local electrical codes.  
1. Check that proper water, drain, electrical  
and gas connections have been made.  
2. Turn on manual gas valve.  
Refer to the data plate located on the left edge  
of the tabletop and the electrical diagram  
located behind the front panel on the base.  
3. Press power switch to the on position. After  
approximately 20 minutes the ready light  
should come on, indicating that generator  
has reached operating pressure.  
ELECTRICAL DATA  
4. With the door closed the ready light comes  
on. Set the timer to the 5-minute position.  
Open the door and observe that no steam is  
entering the compartment and the ready  
and cooking lights are off.  
Volts  
120  
60  
1
Hertz (Hz)  
Phase  
Machine Amps  
3
5. Close the compartment door. The cooking  
light should now be lit and steam should be  
heard entering the compartment.  
Minimum Circuit  
Ampacity, Maximum  
Protective Device  
AMPS  
15  
6. Check the drain line to be sure that water  
from the cold water condenser is flowing  
through the drain line.  
7. Openthecompartmentdoorandobservethat  
steam supply to the compartment stops, and  
that the ready light and cooking light turn off.  
8. Close the compartment door and let the  
cooking cycle finish. When the timer returns  
to the 0 position, a buzzer will sound,  
signaling the end of the cooking cycle and  
the cooking light goes off. To silence the  
buzzer,turnthedialtimertotheOFFposition.  
9. Complete the above steps for each cooking  
compartment.  
10. To shutdown the steamer, press the power  
switch to the off position and close the  
manual gas shutoff valve. Leave the  
compartment doors slightly open to allow  
the inside to dry out.  
— 10 —  
 
C24GA SERIES GAS CONVECTION STEAMERS  
OPERATION  
The steamer and its parts  
The steamer and its parts  
are hot. Use care when operating, clean-  
ing or servicing the steamer.  
are hot. Use care when operating, clean-  
ing or servicing the steamer.  
Compartment Controls and Indicators  
The cooking compartment  
contains live steam. Stay clear when  
opening each door.  
ITEM  
FUNCTION  
Ready Light  
(Green)  
Indicates the steamer is ready  
for the cooking cycle  
LIGHTING AND SHUTDOWN  
INSTRUCTIONS  
Cooking Light Indicates the steamer is in the  
(Red)  
Timer  
cooking phase  
Set the desired cooking time.  
Timer range is 0-60 minutes or  
constant. Turn to the OFF  
position to silence buzzer.  
Lighting  
1. Turnmanualgasshutoffvalvetoonposition.  
2. Press power switch on. Steam will  
generate in 20 minutes.  
3. Ready light will light when compartment is  
ready for cooking.  
4. Load food and set timer to proper cook  
time. Door must be closed.  
Shutdown  
1. Press power switch off.  
2. Wait 5 minutes before relighting the  
appliance (if required).  
3. Turn manual gas shutoff valve to off  
position.  
4. Do not unplug or turn off power supply for  
at least 20 minutes after power switch is  
turned off.  
5. Leave compartment door sightly open.  
COMPARTMENT CONTROLS  
The upper section of the steamer consists of  
twocookingcompartments. Eachcompartment  
functions independently with its own controls  
(See Figure 4) and is a separate, sealed steam  
chamber during the cooking operation.  
Figure 4. Cabinet Controls  
— 11 —  
 
C24GA SERIES GAS CONVECTION STEAMERS  
Refer to Steam Cooking with Vulcan Kettles  
and Steamers for suggested cooking times.  
Also refer to the Suggested Cooking Guideline  
in this manual. Size, weight, pan loading and  
product quality will affect cooking times and  
should be adjusted to your own requirements.  
3. The buzzer will sound when the cooking  
cycleendsandsteamhasstoppedentering  
the cooking compartment(s).  
Turn the timer(s) to the OFF position  
to silence the buzzer(s); remove the  
cooked food.  
The red cooking light will go off and  
the green ready light will come on to  
indicate the steamer is ready for the  
next cooking cycle.  
STARTUP PROCEDURE  
1. Open manual gas shutoff valve and ensure  
the steamer doors are closed.  
2. Press power switch to the on position.  
STEAMING  
3. If Ready light fails to turn on in 20 minutes,  
press power switch off and back on to  
reset ignition system.  
Each steaming compartment has its own  
controls.  
With the Ready light lit, the steamer is ready  
for use.  
PREHEATING  
Place pans of food to be cooked into the  
compartment and shut the door.  
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.  
Set the timer to the desired cooking  
time. Steaming begins.  
When the green ready light comes on,  
set the timer to 10 minutes to preheat  
the compartment.  
The cooking cycle may be interrupted at  
any time by opening the compartment  
door. Resume cooking by closing the door.  
The red cooking light is lit.  
When the buzzer sounds, the timed  
steaming cycle has finished. Steaming  
stops, the cooking light goes off. To  
silence the buzzer, turn the timer OFF.  
When the buzzer sounds, turn the timer  
to the OFF position. The steamer is  
ready to cook.  
EXTENDED SHUTDOWN  
OPERATING  
To shut down for an extended period:  
1. With the compartment(s) preheated and  
the green ready light on, place pans of  
food into the cooking compartment(s) and  
shut the door(s).  
1. Press power switch off.  
2. Turn manual gas shutoff valve to off.  
3. Clean the compartment(s).  
2. Turn the timer(s) to the desired cooking  
time.  
4. After 20 minutes unplug steamer.  
The cooking cycle will begin.  
The cooking cycle and time may be  
interrupted at any time by opening  
the door. Close the door to resume  
cooking.  
— 12 —  
 
C24GA SERIES GAS CONVECTION STEAMERS  
Compartments  
CLEANING  
Wash the inside of the compartment with a  
solution of warm water and non-chloride  
detergent. Rinse with warm water.  
Disconnect the electrical  
power to the machine and follow lockout /  
tagout procedures before cleaning.  
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.  
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).  
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.  
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  
detergent and pour ½ gallon (1.9 liters) of it  
down each compartment drain. Rinse by  
pouring ½ gallon (1.9 liters) of hot water down  
each compartment drain.  
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.  
Draining Generator  
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.  
The water being  
drained is hot and under pressure.  
Use care when cleaning or servicing  
the generator.  
After the generator has been in operation, turn  
the unit off with the power switch located on  
bottom cooking cavity to drain the generator.  
The generator will drain for approximately 15  
minutes, removing sediment, scale and lime  
buildup in the generator.  
— 13 —  
 
C24GA SERIES GAS 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, Talc or Zud First  
Impression. Always rub parallel to the polish  
lines or with the grain.  
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.  
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  
cleaners. Rinse thoroughly. Wipe dry. Where  
appropriate, apply a polish recommended for  
stainless steel (such as Benefit or Super  
Sheen) for extra protection and luster.  
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  
and 4) chlorides.  
— 14 —  
 
C24GA SERIES GAS CONVECTION STEAMERS  
MAINTENANCE  
Draining Generator  
The steamer and its parts  
are hot. Use care when operating, clean-  
ing or servicing the steamer.  
At least once daily, turn the unit off with the  
powerswitchlocatedonbottomcookingcavity,  
to drain the generator.  
Water Treatment System  
Note: DO NOT remove the electric supply  
A water treatment system is recommended for  
steamers. Refer to your supplier’s manual for  
normal maintenance procedures for proper  
scale-free operation recommendations.  
or the unit will not drain.  
Door Gaskets  
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.  
Scale Related Maintenance  
Periodic maintenance is necessary to keep  
your generator clean and efficient. Initially, after  
three months of steamer usage, it is  
recommended that you have your Vulcan-Hart  
authorizedservicerinspectthegenerator.Local  
water conditions and steamer usage will  
determine the frequency that this service must  
Flue  
Annually (at minimum), when the steamer is  
cool, check theflueandclearany obstructions.  
be repeated; however,  
a
minimum  
recommendation is once a year. This  
maintenance is not covered by warranty.  
— 15 —  
 
C24GA SERIES GAS CONVECTION STEAMERS  
COOKING CHART  
The following table lists suggested cooking times and weights. These times, which will vary  
depending on initial product temperature, size, shape, etc., are approximate and should be  
adjusted to suit your operation.  
PRODUCTS TO BE COOKED IN SOLID PANS  
PRODUCT  
TIMER SETTING  
IN MINUTES  
WEIGHT  
PER PAN  
Eggs, Scrambled  
12  
25  
8 Dozen  
2 lbs.  
Rice, Long Grain (Cover with 4 cups water/lb.)  
Pasta (Place perforated pan inside solid pan, cover  
pasta with cold water  
Spaghetti – Regular/Vermicelli  
Macaroni - Shells/Elbows  
Noodles - ½" Wide  
12-15  
15-18  
12-15  
15-18  
4 lbs.  
4 lbs.  
4 lbs.  
4 lbs.  
Lasagna Noodles  
Frozen Casseroles, Lasagna  
Meat Loaf, 3-5 Lb. Each  
35  
40  
Full Pan  
15 lbs.  
Beef  
Ground Chuck  
Sliced as Purchased  
20-25  
35-40  
5
10 lbs.  
10 lbs.  
4 lbs.  
Shrimp, Frozen, 10 Shrimp per Lb.  
Beans  
Baked  
Refried  
9
9
6
10 lb. Can  
10 lb. Can  
10 lb. Can  
Canned Vegetables  
Prunes, Dried  
15  
— 16 —  
 
C24GA SERIES GAS CONVECTION STEAMERS  
PRODUCTS TO BE COOKED IN PERFORATED PANS  
PRODUCT  
TIMER SETTING  
IN MINUTES  
WEIGHT  
PER PAN  
Clams  
Frozen  
Fresh  
10-12  
10-12  
3 Dozen  
3 Dozen  
King Crab Frozen  
Claws  
Legs  
4
4-6  
2-½ Lbs.  
2-½ Lbs.  
10 lbs.  
Lobster Tail, Frozen  
6
5
Lobster, Live, 10" – 12"  
Salmon Fillets, Frozen, 8 Oz. Ea  
Scallops, Fresh  
4 per pan  
5
7-½ lbs.  
3 lbs.  
4
Scrod Fillets, Fresh  
3.5  
4 lbs.  
Eggs  
Hard Cooked  
Soft Cooked  
Soft Yoke for Caesar Salad  
15  
9-10  
6-8  
20  
4 Dozen  
4 Dozen  
4 Dozen  
Chicken Breasts, Legs, Thighs  
15 lbs.  
Turkey  
Frozen Breasts (2)  
Cut Lengthwise  
90  
95  
6-7 lbs. ea.  
20-25 lbs. ea.  
Corned Beef  
40-75  
6-8 lbs.  
Hot Dogs or Wieners  
3
80-100 Count  
Asparagus Spears  
Frozen  
Fresh  
10-12  
5
3 Dozen  
5 lbs.  
Beans  
Green, 2" Cut, Frozen/Fresh  
Lima, Frozen  
Baby Lima, Frozen  
6
8
5
5 lbs.  
5 lbs.  
5 lbs.  
Broccoli  
Spears, Frozen  
Spears, Fresh  
Flowerettes, Frozen  
8
6
6
4 lbs.  
5 lbs.  
5 lbs.  
5 lbs.  
5 lbs.  
Brussel Sprouts, Frozen  
Cabbage, Fresh, 1/6 Cut  
6
8
— 17 —  
 
C24GA SERIES GAS CONVECTION STEAMERS  
PRODUCTS TO BE COOKED IN PERFORATED PANS  
PRODUCT  
TIMER SETTING  
IN MINUTES  
WEIGHT  
PER PAN  
Carrots  
Baby Whole, Frozen  
Crinkle Cut, Frozen  
Sliced, Fresh  
8
7-8  
11  
7 lbs.  
4 lbs.  
9 lbs.  
Cauliflower, Flowerettes  
Frozen  
Fresh  
6
7-8  
7
4 lbs.  
5 lbs.  
5 lbs.  
Celery, 1" Diagonal Cut  
Corn  
Yellow Whole Kernel, Frozen  
Cobbettes, Frozen  
Corn On Cob, Fresh  
5
8
5 lbs.  
27 Ears  
80 Ears  
18 Ears  
54 Ears  
16-18  
10-12  
16-18  
Peas, Green  
6
5 lbs.  
Potatoes, “Whole Russet”  
55  
10 lbs.  
Spinach  
Chopped, Frozen  
Defrosted  
Fresh Cut  
17  
5
3
6 lbs.  
6 lbs.  
2 lbs.  
Squash, Acorn, Halves  
Zucchini, Slices  
25  
8
10 Halves  
10 lbs.  
Frozen Mixed Vegetables  
6-7  
5 lbs.  
Fruit, Blanch for Peeling  
Grapefruit  
Oranges  
3
3
Pineapple, Whole for Cutting  
4
COOKING HINTS  
Where possible, spread food out evenly in pans. Do not allow food to protrude above pans, since  
this will interfere with steam circulation between pans in the compartment.  
Always preheat compartments for satisfactory results.  
When time does not allow for defrosting of frozen vegetables, such as loose-pack peas, corn, diced  
carrots, etc., they may be cooked at once provided just half of the suggested portions in the cooking  
chart are used.  
— 18 —  
 
C24GA SERIES GAS CONVECTION STEAMERS  
TROUBLESHOOTING  
SYMPTOMS  
POSSIBLE CAUSES  
Gas supply is off  
REMEDY  
Unit not steaming  
Turn on gas supply.  
Power cord is unplugged  
Power switch is off  
Plug in power cord.  
Press power switch on.  
Turn on water supply.  
Water supply is off  
Burner control goes into 100%  
lockout  
Shut off the power, wait 5  
minutes, then turn power back on  
to restart ignition.  
If symptom persists, contact your  
Authorized Vulcan-Hart Servicer.  
Door leaks  
Damaged door gasket  
Plugged drain or screen  
Check door gasket for damage.  
If adjustment is needed, contact  
your Authorized Vulcan-Hart  
Servicer.  
Clear compartment cavity screen.  
If symptom persists, contact your  
Authorized Vulcan-Hart Servicer.  
Water accumulates in  
compartment  
Drain clogged  
Unclog drain.  
Not leveled properly  
Level per instructions in this  
manual.  
Water not being  
supplied to generator  
Water supply valve is off  
Water pressure low  
Turn valve on.  
Check water supply pressure.  
Water filter is plugged  
Refer to water filter manual.  
If symptom persists, contact your  
Authorized Vulcan-Hart Servicer.  
Steam is exiting from  
under unit  
Generator pressure is too high  
Contact your Authorized Vulcan-  
Hart Servicer.  
SERVICE AND PARTS INFORMATION  
To obtain service and parts information concerning this model, contact the Vulcan-Hart Service  
Service and Parts depots).  
When calling for service, the following information must be available: model number, serial number,  
manufacture date (MD) and voltage.  
— 19 —  
 
C24GA SERIES GAS CONVECTION STEAMERS  
F-35423 Rev B. (10-07)  
— 20 —  
PRINTED IN U.S.A.  
 

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