Crown Oyster Bars OB-2-2-27-E User manual
MANUAL 10103 REV 3 (08/22)
$21.00
OYSTER BARS, ELECTRIC BOILERS
MANUAL SECTION CO
IMPORTANT FOR FUTURE REFERENCE
Please complete this information and retain this
manual for the life of the equipment:
Model #:
___________________________
Serial #:
___________________________
Date Purchased:
_____________________
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.
Model OB-E
CROWN FOOD SERVICE EQUIPMENT
A Middleby Company
70 Oakdale Road, Downsview (Toronto) Ontario, Canada, M3N 1V9
Telephone: 919-762-1000 www.crownsteamgroup.com
Oyster Bars, Electric Boilers
OB-2-2-27-E, OB-3-2-40-E & OB-4-2-54-E
Installation & Operation Manual
INSTALLATION & OPERATION MANUAL 10103 REV 3 (08/22)
PAGE 2 OF 16
SAFETY PRECAUTIONS
Before installing and operating this equipment, be sure everyone involved in its operation is fully trained and aware of
precautions. Accidents and problems can be caused by failure to follow fundamental rules and precautions.
The following symbols, found throughout this manual, alert you to potentially dangerous conditions to the operator,
service personnel, or to the equipment.
CAUTION
WARNING
NOTICE
This symbol warns of immediate hazards that will result in severe injury or death.
This symbol refers to a potential hazard or unsafe practice that could result in injury or death.
This symbol refers to a potential hazard or unsafe practice that could result in injury, product
damage, or property damage.
This symbol refers to information that needs special attention or must be fully
understood, even though not dangerous.
DANGER
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.
NOTICE
Contact the factory, the factory representative or local service company to perform maintenance and repairs.
Copyright © 2022 by Crown. All rights reserved. Published in the United States of America.
IMPORTANT NOTES FOR INSTALLATION AND OPERATION
WARNING
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.
CAUTION
NOTICE
This manual should be retained for future reference.
It is recommended that this manual be read thoroughly and that all instructions be followed carefully.
NOTICE
Do Not attempt to operate this unit in the event of power failure.
NOTICE
This product is intended for commercial use only. NOT FOR HOUSEHOLD USE.
INSTALLATION & OPERATION MANUAL 10103 REV 3 (08/22) PAGE 3 OF 16
RETAIN THIS MANUAL FOR FUTURE REFERENCE.
Table of Contents
Important Notes For Installation and Operation.................................................................... 2
Service Connections............................................................................................................. 4
Installation Instructions ......................................................................................................... 5
Operation .............................................................................................................................. 7
CSD-1 Optional Feature ................................................................................................. 8
Periodic Maintenance ........................................................................................................... 9
Oyster Cooker Functioning Mode ....................................................................................... 11
Cooker Operation ................................................................................................................ 11
Cooker Preventive Maintenance ......................................................................................... 11
Cleaning .............................................................................................................................. 12
Troubleshooting .................................................................................................................... 13
TC
INSTALLATION & OPERATION MANUAL 10103 REV 3 (08/22)
PAGE 4 OF 16
SERVICE CONNECTIONS
WATER QUALITY STATEMENT
Comprehensive Water Treatment System which exceeds our minimum water requirements. Proof of installation and proper cartridges replacement is required for
warranty coverage. Water supply to Crown Steam Group steamers must be within these guidelines.
Total dissolved solids....................... ...... Less than 60 PPM Chlorine ............................Less than 1.5 PPM
Total alkalinity ........................................ Less than 20 PPM pH Factor .........................6.8 - 7.3
Silica....................................................... Less than 13 PPM
Water which does not meet these standards should be treated with the installation of Middleby’s Water Treatment System. Call 919-762-1000 if you have questions
concerning your water meeting these parameters.
*Failure or malfunction of this appliance due to poor water quality is not covered under warranty.
Reference www.crownsteamgroup.com for complete warranty details and instructions.
US Quart Liters
OB-2-2-27-E 2 x 2 2 x 2
OB-3-2-40-E 3 x 2 2 x 3
OB-4-2-54-E 4 x 2 2 x 4
ELECTRIC CHARACTERISTICS AND CAPACITIES
DIMENSIONS
Model Units A B C D E F G H J K L M
OB-2-2-27-E in
(mm)
27”
(686)
54”
(1372)
8.75”
(222)
8”
(203)
5.75”
(146)
4”
(102)
19.25”
(489)
4.75”
(121)
3.5”
(89)
4”
(102)
59.75”
(1518)
21.63”
(549)
OB-3-2-40-E in
(mm)
40”
(1016)
34.63”
(879)
OB-4-2-54-E in
(mm)
54”
(1372)
48.63”
(1235)
SERVICE CONNECTIONS
- COLD WATER: 3/8” O.D. tubing at 25-50 PSI(170-345 kPa)
D
C
Amps Per Line
Model kW Phase 208V 220V 380V 415V 480V
OB
24 3 66.6 63 36.5 33.4 28.9
36 3 99.9 94.5 54.7 50.1 43.3
42 3 116.6 110.2 63.8 58.4 50.5
INSTALLATION & OPERATION MANUAL 10103 REV 3 (08/22) PAGE 5 OF 16
I
U
IMMEDIATELY INSPECT FOR SHIPPING DAMAGE
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.
We cannot assume responsibility for damage or loss incurred in transit.
INSTALLATION INSTRUCTIONS
L
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.
I C S
The appliance 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 the Canadian Standards Association, 178 Rexdale Blvd., Etobicoke, Ontario, Canada, M9W 1R3.
In the U.S.A.:
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, USA, 02269.
L A
1. Place appliance in the installation position.
2. Place a carpenter’s level on top of the appliance and turn the adjustable feet to level side-to-side and front-to-back.
on page 4.) Insert proper anchoring devices (not supplied).
5. Place appliance back in the installation position.
6. Place carpenter’s level on top appliance and re-level side-to-side and front-to-back.
Direct steam jacketed oyster cookers are pressure vessels of a double wall stainless steel construction forming a steam
chamber (jacket) enveloping the bowl surface. Cookers are mounted on a modular cabinet base housing an electric boiler
designed to ASME Code and approved as a steam heating boiler restricted to operation at pressure not to exceed 15 psi.
The electric boiler may be in a 27 inch, 40 inch or 54 inch cabinet base. Boilers are electrically rated as shown on page 4.
All models are 2 quarts cooker capacity.
INSTALLATION & OPERATION MANUAL 10103 REV 3 (08/22)
PAGE 6 OF 16
I
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.
Canopies are set over ranges, ovens, kettles, etc. for ventilation purposes. It is recommended that a canopy extend 6”
P C
WARNING
Plumbing connections must comply with applicable sanitary, safety, and plumbing codes.
IMPORTANT
If your equipment was supplied with split water lines and a filter, connect the filter system to the connection
marked “BOILER FEED” only. Make a second connection the “CONDENSER FEED” from a cold and
unfiltered water supply.
NOTICE
FAILURE OR MALFUNCTION OF THIS APPLIANCE DUE TO POOR WATER QUALITY IS NOT COVERED UNDER
WARRANTY. SEE WATER QUALITY STATEMENT (PAGE 4).
Water Supply Connection
The incoming cold water supply connection, at the rear of the boiler cabinet, requires 3/8” tubing and water pressure
boiler is in operation.
Drain Connection
IMPORTANT
When making electrical connections, use copper wire suitable for at least 200 °F (90 °C). The appliance 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.
INSTALLATION & OPERATION MANUAL 10103 REV 3 (08/22) PAGE 7 OF 16
O
OPERATION
For CSD-1 equipped boilers, see this section for CSD-1 Optional Feature for proper operating instructions.
B C ()
Main Power Switch
the tank and generate steam.
the boiler tank and releasing water and steam to the drain. This should be done daily to
remove sediment, lime, or scale.
Pilot Light - Indicates main power is ON.
Boiler Pressure Gauge
Water Level Sight Glass - Observe level of water and water quality in the boiler. Murkiness in the water indicates
Quality Statement on page 4).
Water Level Control
sediment that might accumulate. (See page 8 for detailed instructions.)
Safety Valve - This valve will release (pop off) if the boiler has too much pressure. Once a week,
this valve should be tripped during operation to make sure it functions properly.
Turn on water and power supply.
Open cabinet door and turn main power switch ON. Pilot light ignites and water begins to fill boiler - observe
water gauge sight glass to verify that proper water level is reached.
Once the proper water level is reached, the heaters begin to heat the water. Heaters require about 15 minutes
to begin steam generation. The boiler pressure gauge in the cabinet should indicate steam pressure in a range
of 9 to 11 psig.
Turn the Main Power Switch OFF: Open manual drain valve. If unit is supplied with Automatic Blowdown Valve, it
will open, draining the boiler and releasing hot water and steam to the drain.
INSTALLATION & OPERATION MANUAL 10103 REV 3 (08/22)
PAGE 8 OF 16
O I CSD-1
START-UP PROCEDURE
1. Close the manual blowdown valve.
2. Open cabinet door and turn “ON” power switch.
The green pilot light will come “ON.” Water will begin to enter the boiler. When enough water has entered the boiler,
the (amber) “STANDBY” pilot light will come on.
3. Press the “RESET” switch to begin boiler operation.
Water Fill Cycle
the production of steam, the level control will supply additional water to the boiler.
Firing Cycle
The elements are operated by pressure sensing devices. On initial operation, the boiler should reach 14 psi in
approximately 15 minutes. At this point, the operating pressure switch will open, de-energizing the elements. Thereafter
the operating pressure switch will cycle the elements between 9 and 11 psi boiler pressure.
Condensing Drain
A thermostat is located in the drain assembly and is activated by the temperature of steam. The thermostat operates the
cooling solenoid, supplying water to the drain to condense the steam.
Automatic Blowdown Valve
If the unit has an automatic blowdown valve, it is activated when the main power switch is activated. The boiler will be
drained should the main power switch be turned “OFF.”
High Temperature Condition
A high temperature safety device is installed on the boiler. Should the temperature exceed the limit of this device, the
boiler will be shut down and put in a state of lockout. The “TEMPERATURE” pilot light (red), and the “STANDBY” pilot light
(amber), will come on.
High Pressure Condition
A high pressure safety switch is installed on the boiler. Should the pressure exceed the limit of this device, the boiler will
be shut down and put into a state of lockout. The “PRESSURE” pilot light (red), and the “STANDBY” pilot light (amber),
will come on. Should this device fail to operate, the safety relief valve will open.
Low Water Condition
boiler will be shut down and put into a state of lockout. The “LOW WATER” pilot light (red), and the “STANDBY” pilot light
(amber) will come on.
O
INSTALLATION & OPERATION MANUAL 10103 REV 3 (08/22) PAGE 9 OF 16
WARNING
Disconnect the unit from the power supply before cleaning or servicing appliance.
IMPORTANT INSTRUCTIONS
resulting in serious boiler damage.
The Boiler Water Level Control installed on your boiler requires periodic maintenance. As boiler water circulates into
CAUTION
When flushing control, note water level in gauge glass, allow the boiler to fill if necessary, and also to come up to
temperature.
Before flushing control, note that water level in gauge glass is within operating range and the boiler pressure is
at least 6 psi. While the boiler is being operated, open blowdown valve at bottom of control by rotating the handle
counterclockwise about 1/4 turn to fully open the valve.
Opening the blowdown valve also checks the cut-off operation. Float should drop shutting steam off, hot water and
steam will flow out the drain flushing away sediment.
NOTICE
Contact the factory, the factory representative or a local service company to perform maintenance and repairs should
the appliance malfunction. Refer to warranty terms.
INSTALLATION & OPERATION MANUAL 10103 REV 3 (08/22)
PAGE 10 OF 16
CAUTION
and repeat if necessary.
1. Observe that the water in gauge glass is clean and clear. Extreme murkiness in water indicates inadequate water quality.
2. Safety valve should be tripped during operation once a week to assure that it functions properly.
3. Keep all exposed cleanable areas of unit clean at all times.
CAUTION
Take extra caution when blowing down water level control or tripping safety valve as extreme hot water and live
steam are present.
CAUTION
Improper use of this procedure may damage your appliance!
It is recommended that the boiler be checked every 90 to 120 days for scale build up. Regular maintenance should be
carried out at this time.
1. With boiler empty, close manual blowdown valve. If appliance is equipped with Automatic Blowdown, turn water supply
to appliance OFF. Turn power switch ON. This will energize and close blowdown valve.
If available, use the Optional Deliming assembly DPA-1 available from your dealer.
4. Replace 3/4” pipe plug securely.
6. Let appliance cycle, allow two hours for descaling and cleaning. DO NOT TURN ON STEAM to attached appliances
or to upper compartment.
7. Open both the blowdown and low water level control valves for complete drainage. After boiler drains, close both
valves.
Appliances with manual blowdown valve must be opened to drain.
9. Complete Step 8 twice to assure boiler is completely rinsed.
10. Appliance is now ready for use.
INSTALLATION & OPERATION MANUAL 10103 REV 3 (08/22) PAGE 11 OF 16
Direct connected steam jacketed oyster cookers consist of a stainless steel bowl and a stainless steel jacket which
envelopes the lower surface of the bowl thus forming a sealed pressure vessel (chamber) into which steam is introduced
by means of a manual control valve.
The cooker bowl is the container for the food product which ideally should be of a liquid or semi-liquid consistency to
achieve complete contact with the bowl surface and thus fully absorb the heat transmitted through that surface.
In the initial stages of the cooking process when the steam comes in contact with the cold cooker bowl surface it
condenses and forms considerable amounts of water. A thermostatic steam trap is plumbed to the exit end of the cooker
jacket. This trap is a mechanical device that closes on high temperatures and opens when the temperature drops thus
allowing the water formed from condensate to exhaust but retain steam under pressure.
1. Fill cooker with product to desired level.
2. Slowly turn the steam control valve ON to full open position.
3. The water or food should boil 3 - 4 minutes per gallon. If it does not, then incoming pressure should be checked to
4. Regulate steam control valve depending on type of food being prepared.
cooker bowl surface.
No preventive maintenance is required other than adhering to the Cleaning Procedure instructions.
WARNING
The oyster cooker and its parts are hot. Use care when operating, cleaning or servicing the oyster cooker.
INSTALLATION & OPERATION MANUAL 10103 REV 3 (08/22)
PAGE 12 OF 16
C
C
CAUTION
Do not use cleaning agents that are corrosive.
Your cooker should be cleaned immediately after each use.
1. Ensure that steam supply is OFF.
2. Pre-rinse inside of cooker thoroughly and tilt to remove any food particles.
3. Using a nylon brush, clean kettle with a mild detergent and warm water rinse. Never use steel wool or scouring
powder as it will scratch stainless steel.
4. Tilt cooker and rinse thoroughly draining out detergent solution.
WARNING
Never spray water into electric controls.
CAUTION
Live steam and accumulated hot water in the compartment may be released when the door is opened.
CAUTION
Disconnect the power supply during cleaning or servicing.
INSTALLATION & OPERATION MANUAL 10103 REV 3 (08/22) PAGE 13 OF 16
TROUBLESHOOTING
T
NOTICE
At least twice a year have an authorized service person clean and adjust the unit for maximum performance.
NOTICE
Contact the factory, the factory representative or local service company to perform maintenance and repairs.
Refer to warranty terms.
1. Water supply is “OFF”.
4. Check drain valve is closed.
5. Supply water pressure too low.
1. Defective Blowdown valve.
2. Heat exchanger build up of scale clogging drain lines and valve.
Boiler Achieves Pressure Slower Than Normal
1. Heavy build up of lime on elements.
2. Loose element connections.
1. Defective safety valve.
2. Pressure too high. Pressure switch requires adjustment (lower) or may be defective.
INSTALLATION & OPERATION MANUAL 10103 REV 3 (08/22)
PAGE 14 OF 16
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INSTALLATION & OPERATION MANUAL 10103 REV 3 (08/22) PAGE 15 OF 16
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INSTALLATION & OPERATION MANUAL 10103 REV 3 (08/22)
PAGE 16 OF 16
Oyster Bars, Electric Boilers
OB-2-2-27-E, OB-3-2-40-E
& OB-4-2-54-E
A product with the Crown name incorporates the best in durability and low maintenance. We all recognize, however,
that replacement parts and occasional professional service may be necessary to extend the useful life of this appliance.
When service is needed, contact a Crown Authorized Service Agency, or your dealer. To avoid confusion, always refer
to the model number, serial number, and type of your appliance.
CROWN FOOD SERVICE EQUIPMENT
A Middleby Company
70 Oakdale Road, Downsview (Toronto) Ontario, Canada, M3N 1V9
Telephone: 919-762-1000 www.crownsteamgroup.com
This manual suits for next models
2
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