Blodgett SN-4E Installation Manual

SN-3E and SN-5E

ELECTRIC CONVECTION STEAMER

INSTALLATION – OPERATION – MAINTENANCE

BLODGETT OVEN COMPANY

IMPORTANT NOTES FOR INSTALLATION AND OPERATION

44 Lakeside Avenue, Burlington, Vermont 05401 USA Telephone [phone] Fax: [phone]

www.blodgett.com

S00059 Rev B (3/06)

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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.

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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

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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. 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)

C

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
WITHIN THESE GENERAL GUIDELINES:

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.

MODEL

SN-3E standard

SN-3E option

SN-5E standard

kW

7.5

10

15

LESS THAN 60 PPM
LESS THAN 20 PPM
LESS THAN 13 PPM
LESS THAN 1.5 PPM

7.0-8.5

ELECTRICAL CHARACTERISTICS

Phase

1

3

1

3

1

3

208V

36 34

21 20 18 11 10 9 7

48 46

28 26 24 15 14 12 10

72 68

42 39 36 23 21 18 14

220V

240V

31 n/a

42 n/a n/a n/a n/a

63 n/a n/a n/a n/a

AMPS PER LINE

380V

415V

n/a

480V

n/a n/a

600V

DIMENSIONS ARE IN INCHES [MM]

20 [508]

17 [432] 27.5 [698]

1.13 [29]

1/2-NPT DELIME INLET

SN-3E

SN-5E

1.5 [38]
19 [483]

12.5 [318]

OPTIONAL LEGS

23.5 [597] 2 [51]

1.75 [45]

3[76]

1.75 [45]

1[25]

4 [102]

24 [610]

15 [381]

SN-5E

SN-3E

21.62 [549]

15.12 [384]

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1.0 INSTALLATION INSTRUCTIONS

LOCATION

Allow space for plumbing and electrical connections. Minimum clearances are 2" on the sides
and 6" on the back for proper air circulation. 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

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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.

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