Crown SC-2 Manuale utente
MANUAL 10045R1
INSTALLATION & OPERATION
MANUAL
Steam Coil Cabinet Base Compartment Cookers
SC-2 SC-3 SCDA-2 SCDA-3
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.
IMPORTANT FOR FUTURE REFERENCE
Please complete this information and retain this
manual for the life of the equipment:
Model #: ___________________________
Serial #: ___________________________
Date Purchased: ____________________
CROWN FOOD SERVICE EQUIPMENT
A Middleby Company
70 Oakdale Road, Downsview (Toronto) Ontario, Canada, M3N 1V9
Telephone: 919-762-1000 www.crownsteamgroup.com
Printed in Canada
INSTALLATION AND OPERATION MANUAL, PRESSURE COOKERS,
SC-2, SC-3, SCDA-2, SCDA-3
PART NUMBER 10045R1 22004-07-28
NOTICE: Contact the factory, the factory representative or local service
company to perform maintenance and repairs.
Intended for commercial use only. Not for household use.
This manual should be retained for future reference.
IMPORTANT NOTES FOR INSTALLATION AND OPERATION
It is recommended that this manual be read thoroughly and that all instructions be followed
carefully.
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.
IMPORTANT: Do not attempt to operate this unit in the event of
power failure. Adequate clearances must be maintained for safe
and proper operation.
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.
WARNING: Disconnect the power supply to the appliance before
cleaning or servicing.
INSTALLATION AND OPERATION MANUAL, PRESSURE COOKERS,
SC-2, SC-3, SCDA-2, SCDA-3
PART NUMBER 10045R1 32004-07-28
TABLE OF CONTENTS
DESCRIPTION PAGE
Important Notes For Installation and Operation ....................................2
1.0 Service Connections ....................................................4
2.0 Installation Instructions ...................................................6
3.0 Operating Instructions ..................................................11
4.0 Cooking Guidelines ....................................................15
5.0 Cleaning ............................................................17
6.0 Maintenance .........................................................18
7.0 Troubleshooting .......................................................22
INSTALLATION AND OPERATION MANUAL, PRESSURE COOKERS,
SC-2, SC-3, SCDA-2, SCDA-3
PART NUMBER 10045R1 42004-07-28
1.0 SERVICE CONNECTIONS
INSTALLATION AND OPERATION MANUAL, PRESSURE COOKERS,
SC-2, SC-3, SCDA-2, SCDA-3
PART NUMBER 10045R1 52004-07-28
1.0 SERVICE CONNECTIONS (Continued)
INSTALLATION AND OPERATION MANUAL, PRESSURE COOKERS,
SC-2, SC-3, SCDA-2, SCDA-3
PART NUMBER 10045R1 62004-07-28
2.0 INSTALLATION INSTRUCTIONS
GENERAL
Models SC-2 and SC-3 cookers have two or three pressurized steaming compartments for
cooking vegetables, fish, eggs and other foods. The steam boiler in the cabinet base is ASME
code designed and approved as a steam heating boiler restricted to operate at pressure not to
exceed 15 psi.
Models SCDA-2 and SCDA-3 cookers also have two or three compartments; the upper
compartment can be switched to provide either pressurized or pressureless steam while the
lower compartment(s) provide pressurized cooking only. .
Accessory 12 x 20" stainless steel pans are available, solid or perforated, in 2.5, 4 and 6"
depth.
ACCOMMODATION
MODEL COMPARTMENTS
TOTAL NUMBER OF PANS NUMBER OF PANS PER
COMPARTMENT
2.5" Depth 4" Depth 6" Depth 2.5" Depth 4" Depth 6" Depth
SC-2, SCDA-2 2 16 8 4 8 4 2
SC-3, SCDA-3 3 24 12 6
Each compartment has a 0 to 60 minute timer and a buzzer that requires manual shut-off.
Doors cannot be opened during cooking. Each door is equipped with an interlock feature that
stops delivery of steam to the compartment before the door can be opened.
An optional Steam Take-Off Connection (3/4" NPT) provides steam for adjacent equipment.
INSTALLATION
UNPACKING
Immediately after unpacking, check for possible shipping damage. If the appliance is found to
be damaged, save the packaging material and contact the carrier within 15 days of delivery.
Before installing, verify the electrical rating agrees with the specification on the rating plate.
INSTALLATION AND OPERATION MANUAL, PRESSURE COOKERS,
SC-2, SC-3, SCDA-2, SCDA-3
PART NUMBER 10045R1 72004-07-28
2.0 INSTALLATION INSTRUCTIONS (Continued)
LOCATION
Position the boiler in its installation location. Check that there are sufficient clearances to
service the controls, door swing, etc. Also adequate clearance must be left for making the
required supply and drain connections.
Allow enough space between any other piece of equipment or wall for service access. Service
to the controls may be required on the left and/or right side panels of the cabinet.
INSTALLATION CODES AND STANDARDS
The boiler must be installed in accordance with:
In Canada:
Provincial and local codes, or in the absence of local codes, with the Canadian Electric Code,
CSA C22.1 (latest edition). Copies may be obtained from CSA International, 178 Rexdale
Blvd., Etobicoke, Ontario, Canada, M9W 1R3.
In the USA:
State and local codes, or in the absence of local codes, with the National Electrical Code,
ANSI/NFPA-70 (latest edition). Copies may be obtained from The National Fire Protection
Association, Batterymarch Park, Quincy, MA, 02269.
LEVELLING AND ANCHORING THE CABINET
1. Place appliance in the installation position.
2. Using a spirit level or pan of water, level the appliance. Then elevate the right side about
1/8" to assure proper compartment drainage.
3. Mark hole locations on the floor through the anchoring holes provided in the rear flanged
adjustable feet.
4. Remove appliance from installation position and drill holes in locations marked on the floor.
(See installation diagram on page 4.) Insert proper anchoring devices (not supplied).
5. Place appliance back in the installation position.
6. Recheck level.
INSTALLATION AND OPERATION MANUAL, PRESSURE COOKERS,
SC-2, SC-3, SCDA-2, SCDA-3
PART NUMBER 10045R1 82004-07-28
WARNING: Plumbing connections must comply with applicable sanitary,
safety, and plumbing codes.
LEVELLING AND ANCHORING THE CABINET
7. Bolt and anchor appliance securely to the floor.
8. Seal bolts and flanged feet with silastic or equivalent compound.
ELECTRICAL CONNECTIONS
WARNING: Electrical and grounding connections must comply with
the applicable portions of the National Electrical Code and/or other
local electrical codes.
WARNING: Disconnect electrical power supply and place a tag at
the disconnect switch to indicate you are working on the circuit.
ELECTRICAL CONNECTIONS
When making electrical connections, use copper wire suitable for at least 200°F (90°C). The
steamer must be grounded in accordance with the National Electrical Code or applicable local
codes. The wiring diagram is located on the inside of the right panel.
EXHAUST HOOD
An exhaust system should be located directly above the steamer to exhaust steam and heat
generated by the steamer.
PLUMBING CONNECTIONS
INSTALLATION AND OPERATION MANUAL, PRESSURE COOKERS,
SC-2, SC-3, SCDA-2, SCDA-3
PART NUMBER 10045R1 92004-07-28
2.0 INSTALLATION INSTRUCTIONS (Continued)
Water Supply Connection
The incoming cold water supply connection, at the rear of the boiler cabinet, requires 3/8"
tubing and water pressure of 25 to 50 psi. A manual shut-off valve must be provided
convenient to the boiler; this valve should be open when the boiler is in operation.
Drain Connection
The boiler drain (2" IPS) should be piped to a floor drain near the boiler. There should be no
solid drain connection; an “open gap” between the boiler and the floor drain is required.
INFORMATION TO STEAM FITTER
Each cooking compartment requires approximately 1 BHP (34.5 lbs. of steam per hour to
operate satisfactorily. Therefore a two compartment requires 2 BHP and a three compartment
requires 3 BHP.
Assuming availability of a 30 psi supply steam pressure immediately to the appliance, then pipe
sizes of ½", 3/4" or 1" will deliver respectively 90, 165 or 385 lbs. of steam per hour to the
appliance Heat Exchanger. From the foregoing, a ½" pipe line is not recommended.
An important consideration is the pressure drop that will occur through the steam supply line
from its point of origin to the appliance. The greater the length of piping and number of valves
and elbows, the greater will be the pressure losses.
Consider a pressure drop of 1 (one) psi for each straight length of pipe equivalent to 120
diameters of that pipe. Thus, a 1" pipe having a straight length of 120" (10 feet) is equivalent to
120 diameters of that pipe and will have a pressure loss of 1 psi through that pipe.
Example:
INSTALLATION AND OPERATION MANUAL, PRESSURE COOKERS,
SC-2, SC-3, SCDA-2, SCDA-3
PART NUMBER 10045R1 10 2004-07-28
INFORMATION TO STEAM FITTER (Continued)
Note, in 3/4" pipe size, that a Standard 90º Elbow and Angle Valve and a Globe Valve are
equivalent to 1.8 feet, 10 feet and 18 feet respectively of straight pipe.
Similarly, in a 1" pipe size, a standard 90º Elbow and Angle Valve and a Globe Valve are
equivalent to 2.2 feet, 12 feet and 23 feet respectively of straight pipe.
Example:
Total of above = 20 + 2.2 + 3 + 2.2 + 17 + 23 + 10 + 2.2 = 79.6 feet. Since each 10 feet is
equivalent to 1 psi pressure loss, 79.6 feet is equivalent to approximately 32 psi from an original
boiler supply of 40 psi.
It is suggested that, wherever possible, the steam supply line to the appliance is a separate line
from the steam source. If the appliance must be supplied from a line supplying other
appliances, the pipe sizes and pressure will have to be verified. Further, during idle periods,
when the steam in the supply line is not in use, water will form from condensed steam in the
supply line. It is advisable to prevent water pockets from forming in the steam line and
impeding the steam flow when it is required. Therefore, the steam supply line should be
installed level or run slightly downwards towards the appliance. Install a Ball Float Trap near
the appliance to drain out water (condensed steam) from the line to assure clean dry steam to
the appliance.
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