Blodgett 3E-SN Installation Manual

SN-E Series

ELECTRIC ATMOSPHERIC STEAMER

INSTALLATION - OPERATION - MAINTENANCE

BLODGETT OVEN COMPANY

www.blodgett.com

44 Lakeside Avenue, Burlington, Vermont 05401 USA

Manufacture Service Questions: 866-518-3977

PART NUMBER 170136 REV A (04/11)

THIS MANUAL MUST BE RETAINED FOR FUTURE REFERENCE. READ, UNDERSTAND
AND FOLLOW THE INSTRUCTIONS AND WARNINGS CONTAINED IN THIS MANUAL.

FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN
THE VICINITY OF THIS OR ANY OTHER APPLIANCE.

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.

NOTIFY CARRIER OF DAMAGE AT ONCE
IT IS THE RESPONSIBILITY OF THE CONSIGNEE TO INSPECT THE CONTAINER UPON
RECEIPT OF SAME AND TO DETERMINE THE POSSIBILITY OF ANY DAMAGE, INCLUDING
CONCEALED DAMAGE. WE SUGGEST THAT IF YOU ARE SUSPICIOUS OF DAMAGE TO
MAKE A NOTATION ON THE DELIVERY RECEIPT. IT WILL BE THE RESPONSIBILITY OF THE
CONSIGNEE TO FILE A CLAIM WITH THE CARRIER. WE RECOMMEND THAT YOU DO SO
AT ONCE.

IMPORTANT - READ FIRST - IMPORTANT

WARNING: THE UNIT MUST BE INSTALLED BY PERSONNEL QUALIFIED TO WORK WITH ELECTRICITY AND PLUMBING.

IMPROPER INSTALLATION CAN CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO THE EQUIPMENT.
THE UNIT MUST BE INSTALLED IN ACCORDANCE WITH APPLICABLE CODES.

CAUTION: SHIPPING STRAPS ARE UNDER TENSION AND CAN SNAP BACK WHEN CUT.

CAUTION: DO NOT INSTALL THE UNIT IN ANY WAY WHICH WILL BLOCK THE SIDE VENTS, OR WITHIN 12 INCHES OF A

HEAT SOURCE SUCH AS A BRAISING PAN, DEEP FRYER, CHAR BROILER OR KETTLE.

CAUTION: LEVEL THE UNIT FRONT TO BACK, OR PITCH IT SLIGHTLY TO THE REAR, TO AVOID DRAINAGE PROBLEMS.

WARNING: FOLLOW THE WIRING DIAGRAM EXACTLY WHEN CONNECTING A UNIT TO AVOID DAMAGE OR INJURY.

CAUTION: DO NOT USE PLASTIC PIPE. DRAIN MUST BE RATED FOR BOILING WATER.

WARNING: DO NOT CONNECT THE DRAIN DIRECTLY TO A BUILDING DRAIN.

WARNING: BLOCKING THE DRAIN IS HAZARDOUS.

IMPORTANT: IMPROPER DRAIN CONNECTION WILL VOID WARRANTY.

IMPORTANT: DO NOT ALLOW ANY WATER TRAPS IN THE LINE. A TRAP CAN CAUSE PRESSURE TO BUILD UP INSIDE THE

CAVITY DURING STEAMING, WHICH WILL MAKE THE DOOR GASKET LEAK.

WARNING: WHEN YOU OPEN THE DOOR, STAY AWAY FROM STEAM COMING OUT OF THE UNIT. STEAM CAN CAUSE

BURNS.

WARNING: BEFORE CLEANING THE OUTSIDE OF THE STEAMER, DISCONNECT THE ELECTRIC POWER SUPPLY. KEEP

WATER AND CLEANING SOLUTIONS OUT OF CONTROLS AND ELECTRICAL COMPONENTS. NEVER HOSE
OR STEAM CLEAN ANY PART OF THE UNIT.

WARNING: ALLOW COOKING CHAMBER TO COOL BEFORE CLEANING.

WARNING: CAREFULLY READ THE WARNINGS AND FOLLOW THE DIRECTIONS ON THE LABEL OF EACH CLEANING

AGENT. USE SAFETY GLASSES AND RUBBER GLOVES AS RECOMMENDED BY DELIMING AGENT
MANUFACTURER.

WARNING: DO NOT MIX DE-LIMING AGENTS (ACID) AND DE-GREASERS (ALKALI).

WARNING: DO NOT PUT HANDS OR TOOLS INTO THE COOKING CHAMBER UNTIL THE FAN HAS STOPPED TURNING.

WARNING: DO NOT OPERATE THE UNIT UNLESS THE REMOVABLE RIGHT SIDE PANEL HAS BEEN RETURNED TO ITS

PROPER LOCATION.

NOTICE: DO NOT USE A CLEANING OR DE-LIMING AGENT THAT CONTAINS ANY SULFAMIC ACID OR ANY

CHLORIDE, INCLUDING HYDROCHLORIC ACID. IF THE CHLORIDE CONTENT OF ANY PRODUCT IS
UNCLEAR, CONSULT THE MANUFACTURER.

NOTICE: DO NOT USE ANY DE-GREASER THAT CONTAINS POTASSIUM HYDROXIDE OR SODIUM HYDROXIDE OR

THAT IS ALKALINE.

WARNING: USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY THE MANUFACTURER OR

THEIR AUTHORIZED DISTRIBUTOR VOIDS ALL WARRANTIES AND CAN RESULT IN BODILY INJURY TO
THE OPERATOR AND DAMAGE THE EQUIPMENT. SERVICE BY OTHER THAN FACTORY-AUTHORIZED
PERSONNEL WILL VOID ALL WARRANTIES.

WARNING: HIGH VOLTAGE EXISTS INSIDE CONTROL COMPARTMENTS. DISCONNECT FROM BRANCH CIRCUIT

BEFORE SERVICING. FAILURE TO DO SO CAN RESULT IN SERIOUS INJURY OR DEATH.

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Table of Contents

Important Operator Warnings .........................................................page 1

References.................................................................................... page 2

Equipment Description................................................................... page 3

Inspection and Unpacking ............................................................ page 4

Water Conditioning ....................................................................... page 5

Installation .................................................................................. page 6-8

Operation ................................................................................... page 9-10

Cleaning.................................................................................. page 11-12

Maintenance................................................................................. page 13

Troubleshooting............................................................................ page 14

Schematics/Wiring Diagram .................................................. page 17-18

Service Log ............................................................................. page 19-20

References

UNDERWRITERS LABORATORIES, INC.

333 Pngsten Road

Northbrook, Illinois 60062

NATIONAL FIRE PROTECTION ASSOCIATION
60 Battery March Park
Quincy, Massachusetts 02269

NSF INTERNATIONAL
789 N. Dixboro Road
P.O. Box 130140
Ann Arbor, Michigan 48113-0140

2 OM-SN-E

The 3-pan steamer holds three standard

12” x 20” x 2½” steamer pans.

Equipment Description

Your 3-pan or 5-pan atmospheric convection steamer is designed to give years
of service. It has a stainless steel cavity (cooking chamber) which is served by an
independent atmospheric steam generator which is electricallyheated. A powerful
blower circulates the steam in the cavity to increase heating efficiency.

The cavity holds up to five or three steam table pans (12” x 20” x 2½” deep). An 18
gauge stainless steel case encloses the cavity, the steam generator and the control
compartment that houses electrical components. Door hinges are reversible (the door
may be set to open from the left or right). Operating Controls are on the front panel.

The steamers are equipped with fully electronic controls and a button-activated,
preprogrammed CLEAN cycle. These units are readily identified by their unique control
panels. The On-Off switch is operated by touch pad controls, and the distinctive
symbol for steam is integrated into the panel. The new models also have fewer panel
louvers on the right side.

From the rear the units are distinguished by the addition of a fuse box, which lets
operators change fuses without removing panels.

The drain system on all models includes a spray condenser, which helps keep steam
from escaping from the chamber and cools drain water.

The 5-pan steamer holds up to five pans.

OM-SN-E 3

Inspection & Unpacking

CAUTION

SHIPPING STRAPS ARE UNDER TENSION

AND CAN SNAP BACK WHEN CUT.

CAUTION

THE 5-PAN UNIT WEIGHS 230 POUNDS (104

KG). THE 3-PAN UNIT WEIGHS 180 POUNDS

(82 KG). YOU SHOULD GET HELP AS NEEDED

TO LIFT THIS WEIGHT SAFELY.

The Steamer will be delivered completely assembled in a heavy shipping carton
strapped to a skid. On receipt, inspect carton carefully for exterior damage.

Carefully cut the straps and detach the sides of the carton from the skid. Pull the carton
up off the unit. Be careful to avoid personal injury or equipment damage from staples
which might be left in the carton walls.

Write down the model number, serial number and installation date. Keep this information
for reference. Space for these entries is provided at the top of the Service Log in the
back of this manual.

When starting installation, check packing materials to make sure loose parts such as the
condensate drip tray are not discarded with this material.

4 OM-SN-E

Water Conditioning

It is essential to supply the steam generator with water that will not form scale.
Even though the steam generator is engineered to minimize scale formation, scale
development depends on the hardness of your water and the number of hours per day
you operate the equipment.

Most water supplies are full of minerals which form scale. It is this scale which could
lead to an early component failure.

Your water utility can tell you about the minerals in your water. The water going to
the steam generator should have no more than 10 to 30 parts per million (ppm) total
dissolved solids (TDS) and should have a pH (acidity rating) of 7.0 or higher. Please
follow these simple precautions:

1. The best way to prevent scale is to use a water treatment system which has
been specifically designed for steamers and combination ovens. Do not rely on
unproven water treatment systems sold for scale prevention and removal. They
are not specifically designed to work with steamers and combination ovens.

2. A well-maintained water treatment system and a regular cartridge replacement
schedule is essential.

Stacked steamers

3. Using a water treatment system will provide longer steam generator/boiler life,
higher steam capacity, and reduce maintenance requirements.

4. If you notice a slowdown in steam production or an increase in deliming, have
the steamer checked for scale build-up. This could be an indication that the
water treatment cartridges need replacing. Heavy scale reduces the units ability
to boil water, and can even cause component failure.

MINIMIZE SCALE PROBLEMS BY USING AND MAINTAINING A SOFTENER AND BY
CLEANING (DELIMING) THE STEAMER REGULARLY.

On both the 3-pan and 5-pan, the dual water connections are side by side on the rear
of the unit. When seen from the back of the unit, the treated (softened) water intake is
on the right.

OM-SN-E 5

Installation

WARNING

THE UNIT MUST BE INSTALLED BY

PERSONNEL WHO ARE QUALIFIED TO

WORK WITH ELECTRICITY AND PLUMBING.

IMPROPER INSTALLATION CAN CAUSE

INJURY TO PERSONNEL AND/OR DAMAGE TO

THE EQUIPMENT. THE UNIT MUST BE

INSTALLED IN ACCORDANCE WITH

APPLICABLE CODES.

CAUTION

DO NOT INSTALL THE UNIT WITH THE

RIGHT OR LEFT SIDE VENTS BLOCKED OR

WITHIN 12 INCHES OF A HEAT SOURCE

(SUCH AS A BRAISING PAN, DEEP FAT

FRYER, CHARBROILER OR KETTLE).

TO AVOID DRAINAGE PROBLEMS, LEVEL

THE UNIT FRONT TO BACK.

CAUTION

EACH UNIT MUST HAVE A SEPARATE

GROUND WIRE FOR SAFE OPERATION.

WARNING

TO AVOID DAMAGE OR PERSONAL INJURY,

FOLLOW THE WIRING DIAGRAM EXACTLY.

ELECTRICAL SUPPLY CONNECTION

FIELD WIRING TABLE - USE COPPER WIRE ONLY - INSULATION RATING THHN (90°C)

VOLTAGE
60 Hz Only

208V, 1-Ph

208V, 3-Ph

240V, 1-Ph

240V, 3-Ph

480V, 3-Ph

kW RATING FIELD WIRING (AWG)

3-PAN 5-PAN 3-PAN 5-PAN 3-PAN 5-PAN

8.1 15.5 8 4 39 74.5

8.1 15.5 10 6 23 43

8.1 15.5 8 4 33 64.6

8.1 15.5 10 8 20 37.3

8.1 15.5 14 12 10 18.6

RATED CURRENT
DEMAND (Amps)

1. Electrical Supply Connection
Current and power demands for each unit are as shown above.

A. Panel Removal
Open the wiring and control panel by removing screws from the right side

panel. Slide the panel forward, and set it aside.

B. Supply Voltage
The unit must be operated at the rated nameplate voltage.

C. Phase Selection
Refer to steamer schematics (Pages 17-18) for wiring information.

D. Terminal Block
The terminal block for incoming power is located at the back of the control

compartment. The ground terminal is located in the wiring compartment
near the terminal block.

E. Supply Wire
To determine the type of wire you need for the power supply, find the

operating voltage and number of phases on the unit data plate. Refer to
the table below or to the label on the units back for correct wire size and
temperature rating. The equipment grounding wire must comply with the
National Electrical Code (NEC) requirements. The schematic on the inside
of the units right side cover gives directions for proper connection of the
terminal block jumpers. The specified wire must be used, or the unit will
not meet Underwriters Laboratories and NEC requirements. The knockout
hole is sized for a ¾ inch conduit fitting on the 3-pan and for a one inch
conduit fitting on the 5-pan.

F. Branch Circuit Protection
Each Steamer, including individual units of stacked models, should have

its own branch circuit protection and ground wire. Current and power
demands for each unit are as shown above.

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