Crown DLT-30 Manuale utente

MANUAL 10077R3

INSTALLATION & OPERATION

MANUAL

Direct Steam Tilting Kettles

DLT-20 DLT-30 DLT-40 DLT-60 DLT-80 DLT-100

DPT-20 DPT-30 DPT-40 DPT-60 DPT-80

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

Division of Middleby Canada Company Inc.

70 Oakdale Road, Downsview (Toronto) Ontario, Canada, M3N 1V9

Telephone: 919-762-1000 www.crownsteamgroup.com

Printed in Canada

INSTALLATION AND OPERATION MANUAL, DIRECT STEAM TILTING KETTLES, MODELS DLT, DPT

Part No. 10077R3 22013-07-16

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.

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.

NOTICE: Contact the factory, the factory representative or local service

company to perform maintenance and repairs.

This manual should be retained for future reference.

INSTALLATION AND OPERATION MANUAL, DIRECT STEAM TILTING KETTLES, MODELS DLT, DPT

Part No. 10077R3 32013-07-16

TABLE OF CONTENTS

DESCRIPTION PAGE

SERVICE CONNECTIONS - DLT ..............................................4

SERVICE CONNECTIONS - DPT ..............................................5

1.0 INSTALLATION INSTRUCTIONS ..........................................6

2.0 INTRODUCTION - DESCRIPTION .........................................7

3.0 BASIC FUNCTIONING ..................................................7

4.0 OPERATING INSTRUCTIONS ............................................8

5.0 CLEANING INSTRUCTIONS .............................................8

6.0 MAINTENANCE ......................................................10

7.0 TROUBLESHOOTING .................................................11

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SERVICE CONNECTIONS

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Part No. 10077R3 52013-07-16

SERVICE CONNECTIONS

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1.0 INSTALLATION INSTRUCTIONS

1. Select a location to provide drainage for kettle pour path when tilted and for draw-off valve

if so equipped.

2. Mark hole locations through flanged adjustable feet on DLT models and through pedestal

base on DPT models. Remove kettle.

3. On hole locations marked, drill holes and insert expansion shields to accommodate

5/16" size lag bolts.

4. Reposition kettle. On DLT models level kettle by making necessary adjustment on

flanged foot.

5. Bolt down kettle and seal with Silastic or other equivalent sealing compound. Sealant

must be applied not only to bolt heads but also around flanges or pedestal base making

contact with floor surface to fulfil NSF requirements.

6. Connect steam line (3/4" pipe size) to the kettle, making sure there is a steam control

valve strainer fairly convenient to the kettle.

7. Connect kettle condensate return line to a drain or to a boiler return line. Each kettle

return line must have a suitable steam trap. Boiler return lines must have a check valve.

8. Safety relief valve on kettle must not be plugged as it is set to relieve excess pressure in

the kettle.

9. If incoming steam pressure is greater than kettle maximum operation pressure then a

pressure reducing valve must be installed in the line.

10. If large amounts of water accumulate in the steam line it will be necessary to install one or

more ball float traps in the line to eliminate the water.

11. A steam line pressure gauge is also recommended to determine the actual amount of

steam being supplied to the kettle.

12. Check for proper operation.

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INTRODUCTION

2.0 DESCRIPTION

All Crown direct connected steam jacketed kettles pertaining to this manual are direct steam

operated pressure vessels of a double-wall stainless steel construction forming a steam

chamber (jacket) enveloping the lower two thirds of the kettle bowl surface. All kettles are

tilting, floor mounted in fixed positions either on legs with adjustable flanged feet (DLT Models)

or pedestals (DPT Models). All kettles are equipped with a drain cock, safety relief valve and a

steam control valve. Options on kettles include hinged spring assisted stainless steel lid

covering the kettle bowl opening and a sanitary stainless steel tangent draw-off valve as an

alternate method for the removal of the food product from the kettle bowl.

3.0 BASIC FUNCTIONING

CAPACITIES

All models are suffixed with either - 20, - 30, - 40, - 60, - 80 or - 100 to indicate the capacity of

that kettle in U.S. gallons. Thus a DLT-40 is a two thirds jacketed direct steam kettle mounted

on legs with a capacity of 40 gallons (U.S.). If the letter F is added to the suffix, this indicates

that the kettle is full jacketed direct steam kettle with a capacity of 40 gallons (U.S.).

FUNCTIONING MODE

Crown direct connected steam jacketed kettles consist of a stainless steel bowl and a stainless

steel jacket which envelopes two thirds of 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 kettle 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 the surface.

The temperature required for the cooking process to function adequately must be greater than

the boiling point of the liquid food product. Further, the greater the steam pressure used, the

higher the temperature and consequently the quicker the cooking process. For example, steam

pressurized at 30 p.s.i. attains a temperature of 274 degrees Fahrenheit (135 degrees Celsius).

INSTALLATION AND OPERATION MANUAL, DIRECT STEAM TILTING KETTLES, MODELS DLT, DPT

Part No. 10077R3 82013-07-16

4.0 OPERATING INSTRUCTIONS

1. If kettle has draw-off valve, close it.

2. Fill kettle with product to desired level.

3. Slowly turn the steam control valve ON to full open position (counterclockwise).

4. The water or food should boil 2 to 3 gallons per minute. If it does not then incoming

pressure and piping should be checked to determine that it is adequate to operate the kettle

efficiently.

5. Regulate steam control valve depending on type of food being prepared.

6. When food is cooked, turn off steam, remove food and clean kettle immediately to prevent

residue from drying on kettle bowl surface.

5.0 CLEANING INSTRUCTIONS

Your kettle should be cleaned immediately after each use.

1. Ensure that steam supply is OFF.

2. Pre-rinse inside of kettle thoroughly and drain 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 kettle fully or open the tangent draw-off valve if one is provided to allow soap and water

solution to drain. Rinse with clean water.

5. On kettles equipped with a draw-off valve, turn the large hex nut counterclockwise by hand

until it is completely disengaged from the thread. Grasp knob to valve and slowly pull out

valve stem and disc. Do not allow disc to come in contact with hard surfaces since damage

to disc may occur and result in valve leakage. Wash the valve stem, disc and handle.

Insert nylon brush with detergent into interior of valve body and tangent draw-off tube and

brush vigorously. Replace valve stem assembly and engage hex nut fully by hand. Flush

kettle with clean warm water. Leave valve open when kettle is not in use.

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Part No. 10077R3 92013-07-16

5.0 CLEANING INSTRUCTIONS (Continued)

CAUTION: Do not use cleaning agents that are corrosive.

Use of cleaning agents that contain chloride, acids or salts are corrosive and may cause pitting

and corrosion when used over a period of time; this will reduce the life of the appliance.

Should pitting or corrosion occur, this is not covered by warranty.

Follow the recommended cleaning instructions. Use a mild detergent, warm water and rinse

thoroughly.

INSTALLATION AND OPERATION MANUAL, DIRECT STEAM TILTING KETTLES, MODELS DLT, DPT

Part No. 10077R3 10 2013-07-16

6.0 MAINTENANCE

PREVENTIVE MAINTENANCE

No preventive maintenance is required other than adhering to the Cleaning Procedure

instructions.

SAFETY VALVE MAINTENANCE AND TESTING

CAUTION! Under normal operating conditions a “try lever test”

should be performed every two months. Under severe service

conditions, or if corrosion and/or deposits are noticed within the

valve body, testing must be performed more often. A “try lever test”

should also be performed at the end of any non-service period.

CAUTION! Hot, high pressure fluid may be discharged from body

drain and vent during “try lever” test. Care must be taken to avoid

any bodily contact.

CAUTION! High sound levels may be experienced during “try lever”

test. Wear proper safety equipment and exercise extreme care!

Test at, or near, half of the operating pressure by holding the test

lever fully open for at least two seconds to flush the valve seat free

of sediment and debris. Then release lever and permit the valve to

snap shut.

If lift lever does not activate, or there is no evidence of discharge,

turn off equipment immediately and contact a licensed contractor or

qualified service personnel.

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