Blodgett SN-3E Manuale utente

IMPORTANT NOTES FOR INSTALLATION AND OPERATION

SN-3E and SN-5E

ELECTRIC CONVECTION STEAMER

INSTALLATION –OPERATION –MAINTENANCE

BLODGETT OVEN COMPANY

www.blodgett.com

44 Lakeside Avenue, Burlington, Vermont 05401 USA Telephone: (802) 658-6600 Fax: (802) 864-0183

S00059 Rev C (7/10)

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.

TABLE OF CONTENTS

DESCRIPTION PAGE

Important Notes For Installation and Operation .................................................................2

Service Connection............................................................................................................4

1.0 Installation Instructions ..............................................................................................5

2.0 Testing Procedures ...................................................................................................9

3.0 Operation ................................................................................................................10

4.0 Cleaning ..................................................................................................................13

5.0 Maintenance ...........................................................................................................14

6.0 Adjustment for High Altitude .....................................................................................15

7.0 Troubleshooting ......................................................................................................16

SERVICE CONNECTION

ELECTRICAL CONNECTION: Ø1 1/8" hole for electrical connection. Rating to be as specified on data plate.

DRAIN: 1"IPS to open floor drain. No solid connection. Use copper only, 24" length before open air gap opening (No bends or elbows).

GENERATOR WATER: 3/8" O.D. tubing at 25-50 PSI(170-345 kPa)

CONDENSING WATER: 3/8" O.D. tubing at 25-50 PSI(170-345 kPa)

WATER QUALITY STATEMENT

WATER QUALITY IS THE MAJOR FACTOR AFFECTING THE PERFORMANCE OF YOUR APPLIANCE. IF YOU ARE UNSURE OF WATER

QUALITY, CONSULT A LOCAL WATER TREATMENT SPECIALIST AND HAVE THE WATER ANALYZED. YOUR WATER SUPPLY MUST BE

TOTAL DISSOLVED SOLIDS

TOTAL ALKALINITY

SILICA

CHLORINE

pH FACTOR

WATER WHICH FAILS TO MEET THESE STANDARDS SHOULD BE TREATED BY INSTALLATION OF A WATER CONDITIONER.

FAILURE OR MALFUNCTION OF THIS APPLIANCE DUE TO POOR WATER QUALITY IS NOT COVERED UNDER WARRANTY.

LESS THAN 60 PPM

LESS THAN 20 PPM

LESS THAN 13 PPM

LESS THAN 1.5 PPM

7.0-8.5

WITHIN THESE GENERAL GUIDELINES:

ELECTRICAL CHARACTERISTICS

17 [432] 27.5 [698]

15 [381]

24 [610]

1.75 [45]

3 [76]

1.13 [29]

SN-3E

SN-5E

1.5 [38]

12.5 [318]

19 [483]

20 [508]

OPTIONAL LEGS

15.12 [384]

4 [102]

21.62 [549] SN-5E

SN-3E

1 [25]

23.5 [597] 2 [51]

1/2-NPT DELIME INLET

DIMENSIONS ARE IN INCHES [MM]

1.0 INSTALLATION INSTRUCTIONS

GENERAL

The SN-3E and SN-5E steamers are single compartment electric pressureless steam cookers

with an internal electric steam generator that maintains water temperature at approximately

205F. SN-3E is rated 7.5 kW as standard; 10 kW is optional. SN-5E is rated 12 kW as

standard; 15 kW is optional.

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.

LEVELING

Using a spirit level or pan of water in bottom of steamer chamber, adjust feet to level steamer

front to back and side to side. After drain is connected, check for level by pouring water onto

the floor of the compartment. All water should drain through opening in rear.

ANCHORING STEAMER

1. Place steamer in desired location with level counter top and mark four corners. Remove

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 steamer.

Failure to comply with this requirement will void the NSF label.

3. Set steamer on counter and bolt down securely with 3/8 - 16 bolts.

FIGURE 1

DRAIN CONNECTIONS

The drain connection must be 1" IPS vertically down, preferably with one elbow only, and

maximum length of 6 feet, piped to an open air gap type drain.

FIGURE 2

CAUTION: In order to avoid any back pressure in the steamer, DO NOT

connect solidly to any drain connection.

WATER CONDITIONING

It is important that the water supply connected to this steamer be softened to no more than 2.0

grains of hardness and have a pH of 6 to 7.5. This degree of hardness can be easily obtained

with the use of properly maintained water softener. The use of a water meter will determine the

water consumption and when the water softener needs regeneration or recharging. Failure to

comply with these water condition standards may void the warranty.

Untreated water contains scale producing minerals which can precipitate onto the surfaces in

the steam generator. Due to the temperatures in the steam generator, 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 bridges across the probe insulator

from the metal extension which senses the water level in the steam generator shell. Once

this scale becomes wet, the water level control is unable to maintain the proper water level

in the steam generator. This situation may cause an electric heating element to fail as a

result of the element not being adequately covered by water.

Strainers and filters will NOT remove minerals from the water.

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 the

standard for “Vapor Removal from Cooking Equipment,” NFPA No. 96 (latest edition).

STACKING KITS

Follow instructions accompanying the stacking kits for installation of stacked steamers.

ELECTRICAL CONNECTIONS

WARNING: Electrical and grounding connections must comply with 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 that you are working on the circuit.

ELECTRICAL CONNECTIONS

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.

PLUMBING CONNECTIONS

WARNING: Plumbing connections must comply with applicable sanitary,

safety and plumbing codes.

There is a 3/8" copper tube water line at the rear of the unit. Should your unit have the optional

split water lines, 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.

2.0 TESTING PROCEDURES

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 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 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.

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