Market Forge Industries ST-7-TE Owner's manual

MADE IN CANADA
S-6129 01/06
INSTALLATION AND OPERATION
MANUAL AND PARTS
ELECTRIC CONVECTION STEAMER
MODELS: ST-7-TE
ST-10-TE

INSTALLATION AND OPERATION MANUAL AND PARTS,
ELECTRIC CONVECTION STEAMERS, MODELS: ST-7-TE, ST-10-TE
PART NUMBER 10175R2 22006-01-19
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.
This manual should be retained for future reference.
Intended for commercial use only. Not for household use.
Adequate clearances must be maintained for safe and proper operation.

INSTALLATION AND OPERATION MANUAL AND PARTS,
ELECTRIC CONVECTION STEAMERS, MODELS: ST-7-TE, ST-10-TE
PART NUMBER 10175R2 32006-01-19
TABLE OF CONTENTS
DESCRIPTION PAGE
Important Notes for Installation and Operation ....................................2
1.0 Service Connections ....................................................4
2.0 Installation Instructions ...................................................5
3.0 Operation ............................................................10
4.0 Suggested Cooking Guidelines ...........................................13
5.0 Cleaning .............................................................17
6.0 Maintenance .........................................................19
7.0 Troubleshooting .......................................................20
8.0 Service ..............................................................21
9.0 Parts ...............................................................23

INSTALLATION AND OPERATION MANUAL AND PARTS,
ELECTRIC CONVECTION STEAMERS, MODELS: ST-7-TE, ST-10-TE
PART NUMBER 10175R2 42006-01-19
1.0 SERVICE CONNECTIONS

INSTALLATION AND OPERATION MANUAL AND PARTS,
ELECTRIC CONVECTION STEAMERS, MODELS: ST-7-TE, ST-10-TE
PART NUMBER 10175R2 52006-01-19
2.0 INSTALLATION INSTRUCTIONS
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 the steamer, check for possible damage. If the steamer is found to be damaged
after unpacking, 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. Minimum clearances are 3" (76 mm) on
the sides and 6" (152 mm) on the back for proper air circulation. Allow adequate access for
operating and servicing the steamer, 36" (915 mm) at the front of the steamer and 15" (381
mm) above the steamer.
LEVELLING AND ANCHORING
Using a spirit level or pan of water in the bottom of the steamer, adjust the levelling feet to level
the steamer front-to-back and side-to-side.
Mark hole locations on the floor through the anchoring holes provided in the flanged adjustable
feet. Remove the steamer and drill holes at marked locations on the floor. Insert proper
anchoring devices.
Set steamer back in proper position.
Install bolts through anchoring holes and into anchors to secure the steamer to the floor. Seal
bolts and flanged feet with Silastic.
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.
ELECTRICAL CONNECTION
WARNING: Electrical and grounding connections must comply with
applicable portions of the national electrical code and/or other local
electrical codes.

INSTALLATION AND OPERATION MANUAL AND PARTS,
ELECTRIC CONVECTION STEAMERS, MODELS: ST-7-TE, ST-10-TE
PART NUMBER 10175R2 62006-01-19
INSTALLATION INSTRUCTIONS (Continued)
WARNING: Disconnect the power supply to the appliance before
cleaning or servicing.
Make electrical connection through the 1-1/8" (29 mm) diameter hole provided using 3/4" (19
mm) trade size conduit. Refer to the wiring diagram located inside the right side panel. Use
90°C minimum insulated wire.
PLUMBING CONNECTIONS
WARNING: Plumbing connections must comply with applicable
sanitary, safety, and plumbing codes.
The water supply inlets are provided with 3/8" (10 mm) compression fittings for 3/8" O.D.
copper tubing. The water supply line pressure should be 25 - 50 psi (170 - 345 kPa) for each
line. The water supply to the generator tank is separate from the water supply to the cooling
system where steam is condensed before entering the drain line.
Install line strainers (not provided). A manual shutoff valve for each supply line must be
provided convenient to the steamer.
We recommend treated water feeding the boiler inlet supply, and untreated water feeding the
cooling system inlet. Hook-ups are labelled on the back of the steamer.
ADJUSTMENT FOR HIGH ALTITUDE LOCATIONS
The steamer has been factory set so that when it is ON, and during the READY phase, it will
maintain water temperature in the steam generator tank at approximately 205°F (96°C) (just
below water boiling point). However, for high altitude locations, an authorized service agency
must adjust the steamer to achieve this temperature.
ADJUSTMENT FOR DRAIN WATER TEMPERATURE
Cooling solenoid valves have been adjusted to yield drain temperatures of 140°F. This will vary
depending on install location water supply temperature and pressure. A qualified service person
should adjust the cooling solenoid valves should the drain temperature be other than desired.
Refer to section 8.0 Service on page 21 for adjustment instructions.

INSTALLATION AND OPERATION MANUAL AND PARTS,
ELECTRIC CONVECTION STEAMERS, MODELS: ST-7-TE, ST-10-TE
PART NUMBER 10175R2 72006-01-19
FIGURE 1
DRAIN CONNECTIONS
The drain connection must be 1" (25 mm)
IPS down, preferably with one or two
elbows only, maximum length 6 feet (1830
mm) and piped to an open gap type drain
(Figure 1). Drain pipe to be copper only.
DO NOT use PVC pipe – PVC pipe may
lose its rigidity or glue may fail.
CAUTION: To avoid
injury or damage to the
steamer, do not connect
solidly to any drain
connection.
WATER QUALITY
The water supply connected to the steam generator should meet the following guidelines:
Failure to comply with water quality statement on page 4 may void the warranty.
Water supplies vary from one location to another. Other factors affecting steam generation are
iron content, chlorides, and dissolved gasses. 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.

INSTALLATION AND OPERATION MANUAL AND PARTS,
ELECTRIC CONVECTION STEAMERS, MODELS: ST-7-TE, ST-10-TE
PART NUMBER 10175R2 82006-01-19
WATER QUALITY (Continued)
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 shell. 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 19.
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 NFPA Standard
No. 96, Vapor Removal from Cooking Equipment, (latest edition).

INSTALLATION AND OPERATION MANUAL AND PARTS,
ELECTRIC CONVECTION STEAMERS, MODELS: ST-7-TE, ST-10-TE
PART NUMBER 10175R2 92006-01-19
START-UP TEST
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 the
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. Turn main power switch ON. After approximately 15 minutes, the READY light should come
on, indicating that the water temperature is 205°F (96°C).
3. When the READY light comes on, set the timer at 5 minutes. With door open, observe that
no steam is entering the compartment and the COOKING light is OFF.
4. Close compartment door. The COOKING light should now be lit and steam should be
heard entering the compartment after about 45 seconds (5 minutes if boiler is empty).
5. Check drain line to ensure that water from the cold water condenser is flowing through the
drain line.
6. Open compartment door and observe that steam supply to the chamber is cut off (READY
light should again come on and COOKING light goes off).
7. Close compartment door and let cooking cycle finish. When the timer returns to the “O”
position, a buzzer will sound, signalling the end of the cooking cycle. To silence the buzzer,
turn the dial timer to OFF.
8. Complete the above steps for each cooking compartment.
9. To shut the steamer down, turn the main power switch OFF and leave the compartment
doors slightly open to allow the inside to dry out.

INSTALLATION AND OPERATION MANUAL AND PARTS,
ELECTRIC CONVECTION STEAMERS, MODELS: ST-7-TE, ST-10-TE
PART NUMBER 10175R2 10 2006-01-19
3.0 OPERATION
CAUTION: Live steam and accumulated hot water in the
compartment may be released when the door is opened.
CAUTION: An obstructed drain can cause personal injury or
property damage.
CONTROLS
Main Power Switch
ON - The boiler will automatically fill and begin heating to the preset
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 -Indicates the temperature has reached 205°F and that the
steamer is ready to begin cooking.
Cooking Light -Indicates that a cooking cycle is in progress.
Timer -Set the cooking time (0 to 60 minutes) or constant steam. 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 supply to the cooking
chamber will cease. Turn the timer OFF to stop the buzzer.