IMPORTANT FOR FUTURE REFERENCE
Please complete this information and retain this
manual for the life of the equipment:
Model #: __________________________
Serial #: __________________________
Date Purchased: ___________________
OPERATOR’S MANUAL
Electric Counter Convection Steamer
R18A-4
! 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.
1100 Old Honeycutt Road, Fuquay-Varina, NC 27526
www.southbendnc.com
MANUAL 1195734 REV0 (11/22/2011)
HEAVY
DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
IMPORTANT NOTES FOR INSTALLATION AND OPERATION
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow this
symbol to avoid possible injury or death.
WARNING: Improper installation, operation, adjustment, alteration,
service or maintenance can cause property damage, injury or death.
Read the installation, operating and maintenance instructions
thoroughly before installing, operating or servicing this equipment.
Intended for commercial use only. Not for household use.
This manual should be retained for future reference.
MANUAL 1195734 REV0 (11/22/2011) 2 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
TABLE OF CONTENTS
DESCRIPTION PAGE
Important Notes For Installation and Operation ....................................2
1.0 Service Connections ....................................................4
2.0 Installation Instructions ...................................................5
3.0 Testing Procedures ....................................................10
4.0 Operation ............................................................11
5.0 Cleaning .............................................................15
6.0 Maintenance ..........................................................20
7.0 Adjustment for High Altitude Locations ......................................22
8.0 Troubleshooting .......................................................23
MANUAL 1195734 REV0 (11/22/2011) 3 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
R18A-4
R18A-4
R18A-4
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
1.0 SERVICE CONNECTIONS
MANUAL 1195734 REV0 (11/22/2011) 4 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
2.0 INSTALLATION INSTRUCTIONS
GENERAL
The 5$-4 steamer is a single compartment electric pressureless steam cookers with an
internal electric steam generator that maintains water temperature at approximately 205°F. For
voltages 208, 240 and 480 it is rated at 10 kW. For voltages 220 and 380 it is rated at 8.4 kW.
At high altitude locations a lower temperature is required to achieve atmospheric steaming.
Contact your authorized service office to have the thermostat adjusted if the steamer will be
operated at high altitudes.
INSTALLATION
UNPACKING
Immediately after unpacking the steamer, 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.
Prior to installation, verify that the electrical service agrees with the specifications on the
machine data plate which is located on the left side panel.
LOCATION
Allow space for plumbing and electrical connections. Allow adequate access for operating and
servicing the steamer (36" at the front of the steamer and 15" above the steamer).
LEGS (OPTIONAL)
If the optional 4" adjustable legs are used, remove the four levelling feet on the bottom of the
steamer.
LEVELLING FEET (Standard) OR 4" ADJUSTABLE LEGS (Optional)
Thread the four 2" levelling feet shipped in a bag inside the steamer cabinet into the threaded
holes on the bottom corners of the steamer. Or, thread the four optional 4" adjustable legs into
the threaded holes on the bottom corners of the steamer.
MANUAL 1195734 REV0 (11/22/2011) 5 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
LEVELLING
Using a spirit level or pan of water in the bottom of the steamer, adjust the levelling feet or the
feet on the adjustable legs to level the steamer front-to-back and side-to-side. After the drain is
connected, check for level by pouring water onto the floor of the compartment. All water should
drain through the opening at the back of the compartment cavity.
ANCHORING STEAMER (Without Legs)
1. Place steamer in the desired location on the levelled counter top and mark four corners.
Remove the steamer and drill ½" holes as indicated in Figure 1.
2. Apply a bead of RTV or other equivalent sealant around bottom perimeter edge of the
steamer. If anchoring the steamer, this bottom seal is necessary to meet NSF
requirements.
3. Set steamer on counter and bolt down securely with 3/8 - 16 bolts (not supplied).
STACKING KIT
Follow instructions in the stacking kit when installing stacked convection steamers.
FIGURE 1
MANUAL 1195734 REV0 (11/22/2011) 6 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
PLUMBING CONNECTIONS
WARNING: Plumbing connections must comply with applicable
sanitary, safety and plumbing codes.
Connect the water supply lines to the 3/8" NPT (internal thread) copper tube inlet. The water
lines supply water to the generator tank and the cooling system where steam is condensed
before entering the drain line. Each will be marked to indicate condensate or boiler feed. The
condensate feed must be cold water and the boiler feed may be either cold or hot water.
Providing hot water feed to the generator will reduce recovery time during cooking. A manual
shutoff valve must be provided convenient to the steamer.
DRAIN CONNECTIONS (FIGURE 2)
The drain connection (Fig. 2) must be 1" IPS down, preferably with one elbow only, maximum
length of 2 feet before open air gap and piped to an open air gap type drain. Drain pipe should
be copper. DO NOT use PVC pipe - PVC pipe may lose its rigidity or glue may fail.
FIGURE 2
CAUTION: In order to avoid any back pressure in the steamer, do
not connect solidly to any drain connection.
MANUAL 1195734 REV0 (11/22/2011) 7 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
WATER QUALITY
The water supply connected to this steamer should contain no more than 2.0 grains of
hardness per gallon with pH from 7.0 to 8.5. This degree of hardness and pH can easily be
obtained with the use of a properly maintained water softener.
Water supplies vary from one location to another. A local water treatment specialist should be
consulted before installing any steam generating equipment.
Untreated water contains scale producing minerals which can precipitate onto the surfaces in
the boiler. Due to the temperatures in the boiler, the minerals can bake onto the surfaces and
components. This can result in early component failure and reduced product life.
Mineral scale on components causes several problems:
1. The surfaces of the heating devices become coated with scale, reducing the heat transfer
efficiency. This can produce hot spots on the heating elements and result in premature
failure.
2. The water level probes become coated with scale. Scale will bridge across the probe
insulator from the metal extension which senses the water level in the boiler cell. Once this
scale becomes wet, the water level control is unable to maintain the proper water level in
the boiler. This situation may cause an electric heating element to fail if the element is not
adequately covered by water.
Strainers and filters will NOT remove minerals from the water.
Refer to REMOVAL OF LIME SCALE DEPOSITS, page 20.
VENT HOOD
Some 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).
MANUAL 1195734 REV0 (11/22/2011) 8 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
ELECTRICAL CONNECTIONS
WARNING: Disconnect electrical power supply and place a tag at
the disconnect switch to indicate that you are working on the circuit.
Electrical grounding must be provided in accordance with local codes or in the absence of local
codes, with the National Electrical Code, ANSI/NFPA70, or the Canadian Electrical Code, CSA
C22-2, as applicable.
Use copper wire suitable for at least 90 degrees Celsius. The steamer must be grounded. The
wiring diagram is located on the right side panel as you face the steamer.
MANUAL 1195734 REV0 (11/22/2011) 9 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
3.0 TESTING PROCEDURES
CAUTION: Live steam and accumulated hot water in the
compartment may be released when the door is opened.
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. Turn main power switch ON. After approximately 5 minutes, the READY light should come
on, indicating that the water temperature is 205 degrees Fahrenheit.
3. When the READY light comes on, set timer to the “5 minute” position. With door open,
observe that no steam is entering the compartment and that the COOKING light is OFF.
4. Close compartment door. The COOKING light should now be illuminated and steam should
be heard entering the compartment after about 45 seconds.
5. Check drain line to ensure that water from cold water condenser is flowing through the drain
line.
6. Open compartment door and observe that steam supply to chamber is cut off. (READY
light should again come on as COOKING light goes off.)
7. Close compartment door and let cooking cycle finish. When the timer returns to “0"
position, a buzzer will sound signalling the end of the cooking cycle. Buzzer must be
manually turned off by setting the timer to its OFF position.
8. To shut down steamer, turn main power switch OFF and leave compartment door slightly
open.
MANUAL 1195734 REV0 (11/22/2011) 10 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
4.0 OPERATION
When set to ON, your steamer has been factory set to maintain the generator standby
temperature just below the boiling point, approximately 205 degrees Fahrenheit, in READY
mode.
CONTROLS
Main Power Switch -
ON Boiler will automatically fill with water and begin heating to STANDBY
temperature.
OFF The boiler will drain.
DELIME Closes the drain valve while CLR liquid is being poured into the generator
during the delime procedure.
Ready Light - When lit, indicates steam generator has reached 205 degrees Fahrenheit
and is ready for the cooking cycle.
Cooking Light - When lit, indicates that a cooking cycle is in progress.
Timer - Set the cooking time (0 to 60 minutes) - steam cooking will begin when
the door is closed. The cooking cycle will be interrupted if the door is
opened during the cooking cycle; resume cooking by closing the door.
When done, a buzzer sounds and steam stops being supplied to the
cooking chamber. Turn timer OFF to stop the buzzer.
PREHEAT
Turn the main power switch ON. When the ready light comes on, set the timer to 1 minute to
preheat the compartment. This should be done when the steamer is first used for the day or
whenever the chamber is cold. The door should be closed during the preheat cycle.
COOKING light is lit.
When the buzzer sounds, turn the timer to OFF. The steamer is now ready to cook.
MANUAL 1195734 REV0 (11/22/2011) 11 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
4.0 OPERATION (Continued)
COOK
After the preheat cycle, the READY light should be ON.
Place pans of food in the cooking chamber. Close the door. Set the timer. Steam flows into
the compartment and the COOKING light is lit. Opening the door will interrupt cooking; resume
by closing the door.
At the end of the cooking cycle, the COOKING light goes off, the buzzer sounds and steam
stops being supplied to the cooking chamber. To stop the buzzer, turn the timer to OFF.
SHUTDOWN
Turn the main power switch OFF – the boiler will automatically blow down. Leave the
compartment door open to allow the inside to dry out.
For an extended shutdown, turn the main power switch OFF, turn power and water supply OFF.
Each compartment is equipped with a removable drain screen. Frequently
check the drain screen for accumulation of food particles. Should food
particles accumulate against, or clog the drain screen, remove it, clean it
thoroughly and then replace it in its original position.
Frequently check that the compartment drain and plumbing is free of all obstructions. Never
place food containers, food or food portion bags in the cooking compartment in such a way that
the compartment drain becomes obstructed.
MANUAL 1195734 REV0 (11/22/2011) 12 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
CONSTANT STEAM FEATURE - OPTIONAL FEATURE
A switch has been added to control this feature. It is labelled “COOKING MODE”.
OPERATION WITH THIS FEATURE
Operation for Timed Cooking
Use the switch to select “TIMED COOKING”. The operator then must select the time required
for the cooking by setting the timer dial to the desired time from “0 to “60" minutes. At the end
of the cook time an audible buzzer will sound.
Operation for Constant Steam
Use the switch to select “CONTINUOUS COOKING”. This mode will provide continuous steam
to the cooking chamber until the operator either turns the selector switch to the “TIMED
COOKING” position, or turns the power switch to the “OFF” position.
SHUT DOWN
Turn timer dial to the “OFF” position. Turn main power switch to the “OFF” position.
For an extended shutdown, turn the main power switch off, turn power and water supply off.
MANUAL 1195734 REV0 (11/22/2011) 13 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
STEAM COOKING
Your steamer efficiently cooks vegetables or other foods for immediate serving. Steam cooking
should be carefully time controlled. Keep hot-food-holding-time to a minimum to produce the
most appetizing results. Prepare small batches, cook only enough to start serving, then cook
additional amounts to meet demand. Separate frozen foods into smaller pieces to allow more
efficient cooking.
Use a pan cover for precooked frozen dishes that cannot be cooked in the covered containers
in which they are packed if they require more than 15 minutes of cooking time. When a cover
is used, approximately one-third additional cooking time is necessary.
Cooking time for frozen foods depends on amount of defrosting required. If time permits, allow
frozen foods to partially thaw overnight in a refrigerator. This will reduce their cooking time.
PREPARATION
Prepare vegetables, fruits, meats, seafood and poultry normally by cleaning, separating,
cutting, removing stems, etc. Cook root vegetables in a perforated pan unless juices are being
saved. Liquids may be collected in a solid 12 inch by 20 inch pan placed under a perforated
pan. Perforated pans are used for frankfurters, wieners and similar items when juices do not
need to be preserved. Solid pans are good for cooking puddings, rice and hot breakfast
cereals. Vegetables and fruits are cooked in solid pans to preserve their own juices. Meats
and poultry are cooked in solid pans to preserve their own juices or to retain broth. Canned
foods may be heated in their opened cans (cans placed in 12 inch by 20 inch solid pans) or the
contents may be poured into solid pans.
ACCEPTABLE PAN SIZES
The steamer accommodates combinations of 12" x 20" pans, solid or perforated.
Number of Pans Accommodated
5$-4
Depth of Pan
1" 2.5" 4" 6"
Quantity
MANUAL 1195734 REV0 (11/22/2011) 14 HEAVY DUTY STEAM
8 4 2 2
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
DRAINING THE GENERATOR
Drain the steam generator after each day’s use to flush out minerals and minimize scale buildup. The boiler drains automatically for about 4 to 6 minutes after the main power switch is
turned off.
5.0 CLEANING
WARNING: Disconnect the power supply to the appliance before
cleaning or servicing.
CAUTION: Do not use cleaning agents that are corrosive.
CAUTION: The appliance and its parts are hot. Use care when
operating, cleaning and servicing the appliance.
CAUTION: Live steam and accumulated hot water in the
compartment may be released when the door is opened.
At the end of each day, or between cooking cycles if necessary:
1. Turn main power switch OFF.
2. Remove pans and racks from compartment and wash in sink.
3. Wash compartment interior with clean water.
4. Use warm soapy water with a cloth or sponge to clean exposed bead of door gasket, rinse
with warm clear water and wipe with a dry cloth.
5. Wipe surfaces which touch door gasket with a cloth or sponge and warm soapy water, rinse
with warm clear water and wipe with a dry cloth. Do not apply food oils or petroleum
solvents or lubricants directly to door gasket or surfaces which touch door gasket.
6. Wipe all solids away from drain opening in compartments to prevent clogging.
MANUAL 1195734 REV0 (11/22/2011) 15 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
5.0 CLEANING (Continued)
7. Keep cooking compartment drain working freely. After cooking grease producing foods,
operate steam with compartment empty for 30 minutes at end of the day, or pour ½ gallon
of warm soapy water down the drain, followed by ½ gallon of warm clear water.
8. Leave door slightly open when steamer is not in use.
Weekly, or more often if necessary:
Clean exterior with a damp cloth and polish with a soft dry cloth. Use a non-abrasive cleaner to
remove discolourations.
CAUTION: An obstructed drain can cause personal injury or
property damage.
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.
PRODUCT TIME (Minutes) WEIGHT PER PAN
COOK IN SOLID PANS
Eggs, Scrambled 10 - 12 8 Dozen
Rice, Long Grain
(Cover with 4 cups water per pound.)
Pasta (Place perforated pan inside solid pan,
cover pasta with cold water.)
Spaghetti, Regular/Vermicelli
Macaroni, Shells/Elbows
Noodles, ½" Wide
Lasagna Noodles
25 2 lb.
12 - 15
15 - 18
12 - 15
15 - 18
Frozen Casseroles, Lasagna 35 Full Pan
MANUAL 1195734 REV0 (11/22/2011) 16 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
PRODUCT TIME (Minutes) WEIGHT PER PAN
Meat Loaf, 3 - 5 pounds each 40 15 lb.
Beef
Ground Chuck
Sliced as Purchased
20 - 25
35 - 40
10 lb.
10 lb.
Shrimp, Frozen, 10 per pound 5 4 lb.
Beans
Baked
Refried
9
9
10 lb. Can
10 lb. Can
Canned Vegetables 6 10 lb. Can
Prunes, Dried 12 to 15
COOK IN PERFORATED PANS
SEAFOOD
Clams
Frozen
Fresh, Cherrystone
10 - 12
5 - 6
3 Doz.
3 Doz.
King Crab, Frozen
Claws
Legs
Lobster Tail, Frozen
Lobster, Live, 10 - 12"
4
4 - 6
6
5
2-1/2 lb.
4-1/2 lb.
10 lb.
4 Per Pan
Salmon Fillets, Frozen, 8 ounces each 5 7-1/2 lb.
Scallops, Fresh 4 3 lb.
Scrod Fillets, Fresh 3 - 5 4 lb.
Eggs
Hard Cooked
Soft Cooked
Soft Yolk for Caesar Salad
15
9 - 10
6 - 8
4 Doz.
4 Doz.
4 Doz.
Chicken - Breasts, Legs, Thighs 20 15 lb.
Turkey, Frozen
Breasts (2)
Cut Lengthwise
90
55
6 - 7 lb. Each
20 - 25 lb.
Corned Beef 40 - 75 6 - 8 lb.
MANUAL 1195734 REV0 (11/22/2011) 17 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
PRODUCT TIME (Minutes) WEIGHT PER PAN
Hot Dogs or Wieners 3 80 - 100 Count
VEGETABLES
Asparagus Spears
Frozen
Fresh
10 - 12
5
3 Doz.
5 lb.
Beans
Green, 2" Cut, Frozen/Fresh
Lima, Frozen
Baby Lima, Frozen
6
8
5
5 lb.
5 lb.
5 lb.
Brussel Sprouts, Frozen 6 5 lb.
Broccoli
Spears, Frozen
Spears, Fresh
Florets, Frozen
8
6
6
4 lb.
5 lb.
5 lb.
Cabbage, Fresh, 1/6 Cut 8 5 lb.
Carrots
Baby Whole, Frozen
Crinkle Cut, Frozen
Sliced, Fresh
8
7 - 8
11
7 lb.
4 lb.
9 lb.
Cauliflower, Florets
Frozen
Fresh
6
7 - 8
4 lb.
5 lb.
Celery, 1" Diagonal Cut 7 5 lb.
Corn
Yellow Whole Kernel, Frozen
Cobbettes, Frozen
Corn-On-Cob, Fresh
5
8
16 - 18
10 - 12
16 - 18
5 lb.
27 Ears
80 Ears
18 Ears
54 Ears
Peas, Green 6 5 lb.
Potatoes, Whole Russet 55 40 lb.
MANUAL 1195734 REV0 (11/22/2011) 18 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
PRODUCT TIME (Minutes) WEIGHT PER PAN
Spinach
Chopped, Frozen
Defrosted
Fresh Cut
Squash, Acorn Halves 25 10 Halves
Zucchini, Slices 8 10 lb.
Frozen Mixed Vegetables 6 - 7 5 lb.
FRUIT
17
5
3
6 lb.
6 lb.
2 lb.
Fruit, Blanch for Peeling,
Grapefruit, Oranges
Pineapple, Whole for Cutting 4
3
MANUAL 1195734 REV0 (11/22/2011) 19 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
6.0 MAINTENANCE
WARNING: Disconnect the power supply to the appliance before
cleaning or servicing.
CAUTION: Live steam and accumulated hot water in the
compartment may be released when the door is opened.
CAUTION: The appliance and its parts are hot. Use care when
operating, cleaning and servicing the appliance.
COLD WATER CONDENSER
The steamer is equipped with a cold water condenser in the rear of the cooking chamber which
helps to condense the steam prior to discharge into the drain. The steamer freely vents itself
by the negative pressure created by the condensate water drainage. This negative pressure
prevents steam leakage around the door gasket and helps draw the steam through the cooking
compartment. Steam leakage at the door may indicate a plugged or improperly installed drain.
REMOVAL OF SCALE DEPOSITS
It is recommended that your steamer be delimed once a month, or more often if necessary.
Should your steamer develop a heavy buildup of lime scale deposits, use CLR.
Before beginning deliming procedures, ensure that water is not overflowing into the cooking
compartment.
The generator tank has a removable sealed tank cover. The main purpose of the removable
cover is for inspection of the interior of the tank for lime build up and easy removal of large
pieces of lime that will not flush out drain. Should the tank cover have to be removed, check
condition of sealing gasket before replacing cover. The hold down bolts are to be tightened to
160 inch pound torque each.
NOTICE: Contact the factory, the factory representative or local
service company to perform maintenance and repairs.
MANUAL 1195734 REV0 (11/22/2011) 20 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
REMOVAL OF SCALE DEPOSITS (Continued)
WARNING: Read and follow instructions on the CLR bottle. Use
plastic or rubber gloves to avoid skin contact. If CLR comes in
contact with skin, rinse with clean water.
1. Drain steam generator by setting the main power switch to OFF. Set cooking time to “0".
2. Set the main power switch to DELIME.
3. Delime port (A) is located on left side at the rear of the unit. Unscrew hex plug from elbow
to allow CLR solution to be poured in using a tube and funnel. Pour in 28 ounces of solution
into the generator (pour slowly to avoid spillage). Remove tube and funnel.
4. Screw the hex plug back into the elbow so that it is sealed.
5. Turn main power switch to ON.
6. Allow steamer to remain in READY cycle for 1-1/2 hours, then turn main power switch OFF
and allow generator to drain.
7. FLUSH CYCLE: Turn main power switch to ON. When READY light comes on, turn main
power switch to OFF to flush generator. Repeat this step three times to completely flush
generator.
8. Clean exterior and interior. Use a mild solution of soap and water. Rinse with clean cloth.
Dry with soft cloth. Leave compartment door open when not in use.
The steamer is now ready for use. Turn off for overnight shutdown.
MANUAL 1195734 REV0 (11/22/2011) 21 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
7.0 ADJUSTMENT FOR HIGH ALTITUDE LOCATIONS
NOTICE: Contact the factory, the factory representative or local
service company to perform maintenance and repairs.
The steamer has been factory set so that when it is ON and in the READY mode, it will maintain
water temperature in the steam generator tank at approximately 205 degrees Fahrenheit (just
below water boiling point). However, for high altitude locations, an authorized servicer must
adjust the steamer temperature lower. To adjust:
1. Remove side panel and turn control panel power switch to ON.
2. Open compartment door, and after about 5 minutes, steam will be seen, entering the
cooking compartment.
3. Turn thermostat shaft counterclockwise to lower temperature until steam just ceases to
enter cooking compartment and READY light goes on.
4. Replace side panel.
5. Follow TESTING PROCEDURES in this manual.
MANUAL 1195734 REV0 (11/22/2011) 22 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
8.0 TROUBLESHOOTING
WATER FLOWS INTO DRAIN DURING SHUTDOWN
When steamer is shut down and cold water is running continuously into the open drain, either or
both solenoid valves did not close when steamer was turned off.
1. Disassemble solenoid valve(s) and examine for scale or foreign particles lodged in
diaphragm or core tube.
2. Clean valve(s) thoroughly and reassemble, or replace valve(s).
WATER OVERFLOWS INTO COOKING COMPARTMENT
When steamer is first turned on for the day, and the following conditions occur:
- READY light does not come on after about 5 minutes,
- Water begins to overflow into cooking compartment,
- Water fill solenoid valve is open,
Any or all of these symptoms may indicate a problem with the operating probe due to either:
1. A short between the operating probe terminal and body of the steamer. Call your
authorized servicer.
2. Excessive scale build-up on the operating probe. This acts as an “insulation” and prevents
the probe from sensing the water level. It is therefore unable to close the water fill
(solenoid) valve to shut off the water.
As a temporary solution, with power OFF, unscrew probes, check visually, and clean or chip
off scalant. Replace probe.
This problem is an indication of severe harmful water conditions which should be corrected
immediately to avoid damage to the components and ultimate malfunction of the steamer.
(See WATER QUALITY in this manual).
MANUAL 1195734 REV0 (11/22/2011) 23 HEAVY DUTY STEAM
INSTALLATION AND OPERATION MANUAL,
ELECTRIC COUNTER CONVECTION STEAMER, MODEL R18A-4
8.0 TROUBLESHOOTING (Continued)
HEATER ELEMENTS DO NOT COME ON
When the steamer is turned ON and heater elements do not activate, and the READY light
does not come on, then the contactors may be burned out. If a considerable amount of
“chattering” of contactors has been previously experienced, then the thermostat bulb may be
coated with scalant and unable to sense water temperature in the boiler accurately, and
therefore unable to control the contactors.
1. Replace contactors.
2. Unscrew thermostat bulb, clean off scalants and screw thermostat bulb back in.
This problem may be an indication of inadequate water quality and is not covered under
warranty. Have water quality analyzed and corrected immediately to avoid complete
malfunction of the steamer.
UNIT SHUTS DOWN WHILE IN OPERATION
Pressure switch has been activated due to 5 psi (34 kPa) pressure in the generator tank.
Pressure in the generator tank is caused by plugged steam jet tubes or steam diverters due to
scale or poor water conditions. Steam jet tubes/steam diverter will have to be cleaned or
replaced.
MANUAL 1195734 REV0 (11/22/2011) 24 HEAVY DUTY STEAM
R18A
R18A
3E-10073R0
3E-10074R0
3E-10075R0
3E-10076R0
R18A
R18A
3E-10077R0
R18A
R18A
3E-10078R0
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