Page 1
SN-G Series
GAS 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 170148 REV B (04/11)
Page 2
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.
POST IN A PROMINENT LOCATION
INSTRUCTIONS TO BE FOLLOWED IN THE EVENT USER SMELLS GAS. THIS INFORMATION
SHALL BE OBTAINED BY CONSULTING YOUR LOCAL GAS SUPPLIER. AS A MINIMUM,
TURN OFF THE GAS AND CALL YOUR GAS COMPANY AND YOUR AUTHORIZED SERVICE
AGENT. EVACUATE ALL PERSONNEL FROM THE AREA.
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.
Page 3
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. WIRING DIAGRAM IS LOCATED ON THE INSIDE OF THE RIGHT PANEL.
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 DELIMING 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 DELIMING AGENT THAT CONTAINS ANY SULFAMIC ACID, OR ANY
CHLORIDE, INCLUDING HYDROCHLORIC ACID. IF THE CHLORIDE CONTENT OF ANY PRODUCT IS
UNCLEAR, CONSULT THE MANUFACTURER. DO NOT USE A CLEANING OR Deliming AGENT THAT
CONTAINS MORE THAN 30% PHOSPHORIC ACID.
OM-SN-G 1
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IMPORTANT - READ FIRST - IMPORTANT
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 AN AUTHORIZED DISTRIBUTOR VOIDS ALL WARRANTIES AND CAN RESULT IN BODILY
INJURY TO THE OPERATOR AND DAMAGE THE EQUIPMENT. SERVICE BY OTHER THAN FACTORYAUTHORIZED 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.
2 OM-SN-G
Page 5
Table of Contents
Important Operator Warnings ....................................................page 1-2
References.................................................................................... page 3
Equipment Description ................................................................ page 4
Inspection and Unpacking ............................................................ page 5
Water Quality Management ........................................................... page 6
Installation and Start-Up ......................................................... page 7-9
Initial Start-Up ....................................................................... page 10-11
Operation ............................................................................... page 12-13
Cleaning ................................................................................. page 14-15
Maintenance ................................................................................ page 16
Troubleshooting ........................................................................... page 17
Parts List - 5G-SN ....................................................................... page 18
Parts List - (2) 5G-SN .................................................................. page 19
Electrical Parts List ...................................................................... page 20
Parts List ..................................................................................... page 21
Electrical Schematic ................................................................... page 22
Service Log ............................................................................ page 23-24
References
CSA International
8501 East Pleasant Valley Road
Cleveland, OH 44131
NFPA/70 The National Electrical Code
NATIONAL FIRE PROTECTION ASSOCIATION
60 Batterymarch Park
Quincy, Massachusetts 02269
NSF INTERNATIONAL
789 N. Dixboro Road
P.O. Box 130140
Ann Arbor, Michigan 48113-0140
KLENZADE SALES CENTER ECOLAB, Inc.
370 Wabasha
St. Paul, Minnesota 55102
800 328-3663 or 612 293-2233
OM-SN-G 3
Page 6
The counter-top steamer holds five standard
12” x 20” x 21⁄2” steamer pans.
Equipment Description
Your 5-Pan Gas 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 gas-heated. A powerful blower circulates the
steam in the cavity to increase heating efficiency.
Each cavity holds up to five steam table pans (12” x 20” x 21⁄2” 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 steamer is 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 drain system on all models includes a spray condenser, which helps keep steam
from escaping from the chamber and cools drain water.
BURNING FIRING RATE
Steamer
Natural Gas at
3.2” W.C.
L.P. Gas at
10.5” W.C.
The stacked steamer holds up to
five pans per cavity.
5G-SN 62,000 62,000
(2) 5G-SN 124,000 124,000
4 OM-SN-G
Page 7
Inspection & Unpacking
CAUTION
SHIPPING STRAPS ARE UNDER TENSION
AND CAN SNAP BACK WHEN CUT.
CAUTION
THE COUNTER-TOP UNIT WEIGHS 203
POUNDS (92 KG). THE STACKED UNIT
WEIGHS 460 POUNDS (207 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.
OM-SN-G 5
Page 8
TREATED WATER
UNTREATED WATER
STEAM VENT
Water Quality and Treatment
It is essential to supply the steam generator with water that will not form scale. Even
though the steam generator/boiler is engineered to minimize scale formation, scale
development depends on the hardness of your water and the number of hours you
operate the equipment each day.
Most water supplies contain minerals which form scale. It is this scale which could
lead to an early component failure.
TREATED WATER
UNTREATED WATER
WIRING
GAS IN
COUNTER-TOP STEAMER
DRAIN
DRAIN
Your local water utility can tell you about the minerals in your water. The water going
to the steam generator should have between 30 and 40 parts per million (ppm) total
dissolved solids (TDS) and should have a pH (acidity rating) of 7.0 to 9.0. 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.
2. A well-maintained water treatment system and a regular cartridge
replacement schedule is essential.
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 INSTALLING AND MAINTAINING WATER
TREATMENT SYSTEM AND BY DELIMING THE STEAMER REGULARLY.
STACKED STEAMER
The second water connection can
reduce treated water requirements.
6 OM-SN-G
The steamer features two separate water inlets — one for the steam generator/boiler
(treated water), the other for the spray condenser (untreated water). The second intake
will reduce treatment requirements resulting in significant savings.
The dual water connections are side by side on the rear of the unit. When seen from
the back of the unit, the treated water intake is on the left.
Page 9
Installation and Start-Up
WARNING
THE UNIT MUST BE INSTALLED BY
PERSONNEL WHO ARE QUALIFIED TO
WORK WITH GAS, 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, OR PITCH IT
SLIGHTLY TO THE REAR.
A. Installation
The counter-top steamer is suitable for installation on or near both combustible
and noncombustible surfaces. Minimum installation clearances are:
Right Side 2 inches
Left Side 2 inches
Rear 6 inches
However, for easy service at least 12 inches clearance is required for the
right side of the unit, and it may not be installed within 12 inches of a heat
source, as stated in the Caution above.
The unit must be installed in a well-ventilated room with an adequate air
supply. The steamer must be installed beneath a ventilation hood, since gas
combustion products exit the appliance.
Any item which might obstruct or restrict the flow of air for combustion and
ventilation must be removed. Do not obstruct the flue cover or any front, side,
rear, or top vents after installation.
The area directly around the appliance must be cleared of all combustible
material. The installation must conform with local codes or, in the absence
of local codes, with the National Fuel Gas Code, ANSI Z223.1, latest edition,
including the following:
The unit and its individual shutoff valve must be disconnected from the gas
supply system during any pressure testing of that system at test pressures in
excess of 1⁄2 PSI (3.45 kPa). It must be isolated from the gas supply piping
system by closing its individual manual shutoff valve during any pressure
testing of the gas supply piping system at test pressures equal to or less than
1⁄2 PSI (3.45 kPa).
1. Electrical Supply Connection
Provide 115 VAC, 60 HZ, 1 PH, 15 AMP service. Bring wire in through
hole on the lower left back panel. Each cavity requires a separate cord
for connections. Local codes and/or the National Electrical Code should
be observed in accordance with ANSI/NFPA 70-1987 (or latest edition).
AN ELECTRICAL GROUND IS REQUIRED. The electrical schematic is
located in the service compartment and in this manual. Maximum load is
21⁄2 AMPs. In Canada, provide electrical service in accordance with the
Canadian Electrical Code, CSA C22.1 Part 1 and/or local codes.
OM-SN-G 7
Page 10
Installation and Start-Up
WARNING
DO NOT CONNECT THE DRAIN DIRECTLY
TO A BUILDING DRAIN. BLOCKING THE
DRAIN IS HAZARDOUS.
CAUTION
DO NOT USE PLASTIC PIPE. DRAIN MUST
BE RATED FOR VERY HOT WATER.
REAR FLUE
ELECTRICAL OPENING
GAS CONNECTION
ELECTRICAL OPENING
GAS CONNECTION
Install the drain line
with a constant downward pitch.
IMPORTANT: Do not allow water traps in the line.
A trap can cause pressure build-up in the cavity,
which may cause the door gasket to leak.
UNIT FRONT
2. Gas Supply Connection
Connection to the gas supply can be completed with 1⁄2” NPT pipe
or approved equivalent. Although the immediate connection to the
appliance is 1⁄2” NPT, gas supply piping must be large enough to provide
62,000 BTU/hr/cavity. Supply pressure must be at least 4.5” W.C.
(maximum 14” W.C.) for natural gas or 12” W.C. (maximum 14” W.C.) for
LP gas. In Canada, the installation must conform to the Canadian Gas
Code, CAN 1-B149, Installation Codes for Gas Burning Appliances and
Equipment and/or local codes. Check all gas connections for leaks prior
to unit operation.
After the unit has been connected to the gas supply, all gas joints must
be checked for leaks. No flame should be used when checking for leaks.
A thick soap solution or other suitable leak detector should be used.
For a unit on casters, complete connection to the gas supply with
connectors that comply with the standard for connectors for moveable
gas appliances, ANSI Z21.69 — latest edition. Restrain movement of the
unit by attaching a cable or chain to the eyelet (provided at the back of
the frame) and anchoring the cable or chain to the wall or floor. Make the
length and location of the cable such that the unit cannot pull on the gas
connection while the cable is connected.
3. Water Connection(s)
Install a check valve to prevent back flow in the incoming cold water line,
as required by local plumbing codes. Water pressure in the line should
be between 30 and 60 PSIG and must deliver a flow rate of 1.5 to 3.0
gallons per minute. If pressure is above 60 PSIG, a pressure regulator will
be needed.
8 OM-SN-G
3⁄4 inch female NH connectors (garden hose type) are used to attach the
water supply to the inlet valves. One connector is for the steam generator
(treated), the other is for the spray condenser (untreated). Minimum
inside diameter of the water feed line is 1⁄2 inch. Use a washer in
the hose connection. Do not allow the connection to leak, no matter how
slowly. Do not over tighten hose connections. Treated (softened) water
goes to the right (seen from the rear of the unit), and untreated water to
the left. Connections for both are made as shown on Page 7. Though not
recommended, an adapter to use a single water intake is available.
4. Drain Connection
Level the steamer front to back, or pitch it slightly to the rear (maximum
1⁄4 inch) by adjusting the optional legs or bullet feet on optional stand. A
2 inch ID hose may be attached to the drain pipe (supplied). There must
be a free air gap between the end of the hose and the building drain. The
free air gap should be as close as possible to the unit drain. There must
also be no other elbows or other restrictions between the unit drain and
the free air gap.
Page 11
Installation and Start-Up
WARNING
DO NOT CONNECT THE DRAIN DIRECTLY
TO A BUILDING DRAIN. BLOCKING THE
DRAIN IS HAZARDOUS.
CAUTION
DO NOT USE PLASTIC PIPE. DRAIN MUST
BE RATED FOR VERY HOT WATER.
WATER
TRAP
5. Factory Stacked Units
This section is applicable only if you are installing factory-stacked units.
Installing stacked steamers is similar to installing a single unit. The steamers
are stacked and assembled at the factory and delivered with the water
connections and drain hoses required for a single point connection.
a. Water Connection
The same water supply connection is used for both units. At the water
inlet valves, 3⁄4 inch female NH connectors (garden hose type) are
used for the water supplies. There are two connections to be made.
Treated water (softened) is connected to the right valve fitting (looking
from the rear of the unit) and untreated water to the left fitting.
b. Electrical Supply Connection
Separate, individual electrical connections will be required for each
steamer in the stack. Each Steamer must have its own branch circuit
protection.
c. Gas Connection
Separate gas connections are required for each steamer in the stack.
Gas supply must be adequate under all conditions as listed on page 9.
BUILDING DRAIN
IMPROPER DRAIN LINE CONNECTION
AIR GAP
BUILDING DRAIN
PROPER DRAIN LINE CONNECTION
Proper Drain Line Connection:
Drain line must have a constant down-
ward pitch of at least 1/4” per foot.
d. Drain Connection
Steamers must be leveled front to back, or pitched to the rear
(maximum 1⁄4 inch) by adjusting the bullet feet on the stand. A 2 inch
ID hose may be attached to the unit drain. It must be rated for very hot
water.
Ensure that there is a free air gap between the end of the unit drain
and the building drain. This gap should be as close as possible to the
unit drain. Do not allow elbows or restrictions between the unit and the
free air gap.
Install the line with a constant downward pitch.
OM-SN-G 9
Page 12
Initial Start-Up
WARNING
WHEN YOU OPEN THE DOOR, STAY AWAY
FROM STEAM COMING OUT OF THE UNIT.
THE STEAM CAN CAUSE BURNS.
After the steamer has been installed, test it to ensure that the unit is operating correctly.
1. Remove all literature and packing materials from the interior and exterior of
the unit.
2. Make sure the water supply line is open.
3. Make sure that the gas supply line is open and that the manual knob on
the main gas valve is turned to the “on” position. This valve is located
behind the front access panel on the right side of the unit.
4. Turn on electrical service to the unit. The unit will not operate without
electrical power. Do not attempt to operate the unit during a power failure.
5. The steamer will not operate until the pilot burner has been ignited. To light
the pilot burner, activate the pilot switch located behind the sliding door
located on the right cover panel. When the pilot ignition sequence has been
successfully completed, a green light - on the pilot switch will glow.
6. The “trial for ignition” period is roughly 90 seconds. If the pilot burner does
not light within about 90 seconds after the switch is activated, the ignition
system automatically stops gas flow to the pilot burner and stops the
ignition trial. If this happens, turn off the pilot switch and repeat the trial for
ignition. During the initial start-up, the pilot may require several trials for
ignition until all the air is bled from the gas piping. Subsequent start-ups
should require only about 5 seconds to achieve pilot ignition.
NOTE: See Automatic Operation of Pilot at the end of this section.
7. Once the pilot burner flame has been established (the green light on the
pilot switch is on), press the “ON” switch for the desired steamer cavity.
The steam generator will fill with water.
NOTE: The door MUST be closed for the main (high) burner to work.
8. When the steam generator has filled with water, the low and main burners
will ignite automatically. Within 8-10 minutes the READY light will come on,
indicating that the water has reached its standby temperature. When the
READY light is displayed, you may take any one of the following steps:
a. Set the timer to the desired time for timed steaming.
b. Turn the timer knob to the manual ON position for continuous
steam.
c. Let the unit stay at standby temperature.
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Page 13
Initial Start-Up
9. To shut down the unit, press the ON switch into the off position. The
steam generator will then drain. You may also switch off the pilot switch
to conserve energy.
10. If the steamer behaves as described, the unit is functioning
correctly and ready for use.
Automatic Operation of Pilot
Once the pilot burner is lit, it essentially functions as a standing pilot. In this state, if
the pilot is accidentally extinguished (by a very strong gust of wind for example), it will
re-ignite automatically. The unit will completely shut down for a few seconds while the
pilot is re-ignited. Then the unit will come back on and resume operation in the mode
and with the (running) timer value existing just prior to shutdown. The pilot switch may
be turned off during “off hours” to conserve energy.
After the unit has been running, if the pilot burner ever fails to re-ignite automatically
within 90 seconds, wait 5 minutes before you attempt to reactivate it. In the unlikely
event that ignition problems persist, contact your authorized Service Agency.
NOTE: For operation at high altitudes (2000 feet and above) please consult the
Engineering Department.
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Page 14
Operation
WARNING
ANY POTENTIAL USER OF THE EQUIPMENT
MUST BE TRAINED IN SAFE AND CORRECT
OPERATING PROCEDURES.
DONE LIGHT
POWER ON/OFF
TOUCH PAD
READY
INDICATOR LIGHT
SERVICE
(“Delime Me”)
INDICATOR LIGHT
CLEAN CYCLE
TOUCH PAD
MANUAL ON
POSITION/LIGHT
STEAMER TIMER
TIMING
INDICATOR
LIGHT
CLEANING
INDICATOR LIGHT
HIGH TEMP
INDICATOR
LIGHT
A. Controls
Operator controls are on the front right of the unit.
The steamer control panel has the following touch pads and indicator lights:
1. The ON/OFF touch pad gets the steamer ready for use, or shuts it off.
2. The READY indicator light shows that the steam generator is at standby
temperature and the cavity is hot enough to begin steaming.
3. The CLEANING indicator light is lit when the unit is operating in the
cleaning mode.
4. The SERVICE indicator light shows when the water level probes have
stopped working, and need to be cleaned (normally an indication of lime
deposits).
When one probe fails, the SERVICE light flashes briefly every few
seconds, but the unit will continue to operate. Delime the unit as soon as
possible.
If the problem continues, both probes may fail. Then the steamer stops
working, the light will flash repeatedly and the beeper will sound. At
this point you must turn off the power and contact an Authorized
Service Representative for repair.
5. The HI TEMP indicator light comes on when the steam generator is too
hot.
DELIME PORT
12 OM-SN-G
The unit will automatically shut off, and cannot be turned on again until
the steam generator cools and the HI TEMP indicator light goes out.
6. The TIMING indicator light stays on when the timer is running.
7. The CLEAN touch pad is used to start the automatic 50 minute cleaning
cycle.
Page 15
Operation
WARNING
WHEN YOU OPEN THE DOOR, STAY AWAY
FROM THE STEAM COMING OUT OF THE
UNIT. THE STEAM CAN CAUSE BURNS.
The timer is used in three ways:
1. In the OFF position the steam generator stays at a low boil or “holding”
temperature.
2. When a cook time is set, the unit steams until the timer runs down to
OFF. At that time steaming stops, a red light comes on and a beeper
sounds.
3. With the timer turned to the ON position, the unit steams continuously.
The green light stays lit. The steamer will not time down.
B. Operating Procedure
1. Press the ON/OFF touch pad for the steamer. The steam generator will
fill, and heat until the READY light comes on. (About 8-10 minutes.)
2. Load food into pans in uniform layers. Pans should be filled to about the
same levels, and should be even on top.
3. Open the door and slide the pans onto the supports. If you will only be
steaming one pan, put it in the middle position.
4. Close the door. With the READY indicator lit, take one of the following
steps:
a. If you want to steam the food for a certain length of time, set the
timer for that period. The timer will automatically run the steamer
for the set time and then turn it off. A red light will come on and a
beeper will sound. Steam production stops.
b. If you want to steam continuously, turn the timer to the manual
ON position. A green light will come on. The unit will continue
steaming until you stop it by turning the timer to OFF. When
steaming continuously YOU MUST CONTROL STEAMING TIME.
5. Open the door. Remove the pans from the steamer, using hot pads or
oven mitts to protect your hands from the hot pans.
6. To shut down the unit, press the ON/OFF touch pad to OFF. The steam
generator will automatically drain.
OM-SN-G 13
Page 16
Cleaning
WARNING
DISCONNECT THE POWER SUPPLY
BEFORE CLEANING THE
OUTSIDE OF THE STEAMER.
KEEP WATER AND CLEANING SOLUTIONS
OUT OF CONTROLS AND ELECTRICAL
COMPONENTS. NEVER HOSE OR STEAM
CLEAN ANY PART OF THE UNIT.
DON’T MIX DE-LIMING AGENTS (ACID)
WITH DE-GREASERS (ALKALI)
ANYWHERE IN THE UNIT.
AVOID CONTACT WITH ANY CLEANERS,
DE-LIMING AGENT OR DE- GREASER AS
RECOMMENDED BY THE SUPPLIER. MANY
ARE HARMFUL. READ THE WARNINGS AND
FOLLOW THE DIRECTIONS!
EVEN WHEN THE UNIT HAS BEEN SHUT
OFF, DON’T PUT HANDS OR TOOLS INTO
THE COOKING CHAMBER UNTIL THE FAN
HAS STOPPED TURNING.
DON’T OPERATE THE UNIT UNLESS THE
REMOVABLE PARTITION HAS BEEN PUT
BACK IN ITS PROPER LOCATION.
DON’T USE ANY CLEANING OR DE- LIMING
AGENT THAT CONTAINS ANY SULFAMIC
AGENT, OR ANY CHLORIDE, INCLUDING
HYDROCHLORIC ACID (HCl). TO
CHECK FOR CHLORIDE CONTENT
SEE ANY MATERIAL SAFETY DATA SHEETS
PROVIDED BY THE CLEANING AGENT
MANUFACTURER. DON’T USE ANY
CLEANING OR DE- LIMING AGENT
THAT CONTAINS MORE THAN
30% PHOSPHORIC ACID.
To keep your steamer in proper working condition, use the following procedure to
clean the unit. This regular cleaning will reduce the effort required to clean the steam
generator and cavity.
A. Suggested Tools
1. Mild detergent
2. Stainless steel exterior cleaner such as Zepper®
3. Steam generator de-liming agent. A liquid de-liming agent will be easier
to use than crystals or powders. See the warning about chlorides, below
4. De-greaser, such as EncompasS®, Malone 34®, Puritan Puribrute®, or
Con-Lie®
5. Cloth or sponge
6. Plastic wool or a brush with soft bristles
7. Spray bottle
8. Measuring cup
9. Nylon pad
10. Towels
11. Plastic disposable gloves
12. Funnel
B. Procedure
1. Exterior Cleaning
a. Prepare a warm solution of the mild detergent as instructed by
the supplier. Wet a cloth with this solution and wring it out. Use
the moist cloth to clean the outside of the unit. Do not allow freely
running liquid to touch the controls, the control panel, any
electrical part, or any louver on the side or rear panels.
b. To remove material which may be stuck to the unit, use plastic
wool, a fiber brush, or a plastic or rubber scraper with a detergent
solution.
c. Stainless steel surfaces may be polished with a recognized
stainless steel cleaner such as Zepper®.
IMPORTANT
DO NOT USE ANY METAL MATERIAL (SUCH AS
METAL SPONGES) OR METAL IMPLEMENTS
(SUCH AS A SPOON, SCRAPER OR WIRE BRUSH)
THAT MIGHT SCRATCH ANY STAINLESS STEEL
SURFACE. SCRATCHES MAKE THE SURFACE
HARD TO CLEAN AND PROVIDE PLACES FOR
BACTERIA TO GROW. DO NOT USE STEEL WOOL,
WHICH MAY LEAVE PARTICLES IMBEDDED
IN THE SURFACE WHICH COULD EVENTUALLY
CAUSE CORROSION AND PITTING.
14 OM-SN-G
Page 17
Cleaning
WARNING
SHOULD A CLEAN CYCLE BE
INTERRUPTED, IT IS POSSIBLE
THAT SOME CLEANING SOLUTION
IS STILL PRESENT IN THE STEAM
GENERATOR. RE-RUN THE CLEAN
CYCLE AND CONFIRM THAT
THE WATER IS DRAINING.
2. Steam Generator and Cooking Chamber
On a regularly scheduled basis, or if the SERVICE light is on, follow the
simple de-liming instructions below. This procedure should be followed
for each cavity. REMEMBER: DON’T ALLOW DE-LIMING AGENTS TO
MIX WITH DE-GREASERS.
a. Ensure that the unit is turned on.
b. Set the timer to “OFF”.
c. Using a glove or towel for hand protection, carefully open the
deliming port. The port may be hot, and a small amount of
pressureless steam may escape as you open the port.
d. Add two cups of de-liming agent.
e. Close the deliming port cover.
f. Holding in the “CLEAN” button, press and release the ON button.
g. The clean cycle will start, and take approximately 30 minutes.
h. When the cleaning cycle is complete, the CLEANING light will flash
and the unit will beep.
i. Wipe out the inside of the steamer cavity.
j. If the steamer is to be used, turn the “ON” switch on. When READY
light turns on, the steamer is ready for operation, set the timer to
the “ON” position.
NOTES:
1. If the clean cycle ends abruptly, the CLEANING light will flash five times
per second. This indicates that the clean cycle was aborted.
2. In the event of a power outage during a clean cycle, rerun the clean cycle
when the power is restored.
3. To abort a clean cycle, turn the “ON” switch off for one second and turn it
back on. REMEMBER, DELIMING AGENT MAY STILL BE PRESENT IN
THE STEAM GENERATOR.
If the SERVICE light is on:
1. Take the actions listed in Troubleshooting Section of this manual. Turn the
steamer off for 10 seconds and then re-start.
2. Repeat steam generator cleaning cycle.
OM-SN-G 15
Page 18
Maintenance
The steamer is designed for minimum maintenance, and no user adjustments should
be necessary. Certain parts may need replacement after prolonged use. If there is a
need for service, only authorized representatives should perform the work.
Always supply water with a low mineral count that meets the standards outlined in
the Water Quality and Treatment section of this manual.
If steam or condensate is seen leaking from around the door, take the following steps:
1. Check the door gasket. Replace it if it is cracked or split.
2. Inspect the cooking chamber drain to be sure it is not blocked.
3. Adjust the door latch pin to allow for changes that might occur as the gasket
ages.
a. Loosen the lock nut at the base of the latch pin, then turn the latch pin
1⁄4 turn clockwise, and tighten the lock nut.
b. After adjustment, run the unit to test for further steam leakage.
c. If there is still leakage, repeat the adjustment.
d. Continue adjusting the pin clockwise until the door fits tightly enough to
prevent leakage. The hinge may also be adjusted.
16 OM-SN-G
Page 19
Troubleshooting
This steamer is designed to operate smoothly and efficiently if properly maintained. However, the following is a list of checks to
make in the event of a problem. Wiring diagrams are furnished inside the service panel. If an item on the check list is marked with
(x), it means that the work should be done by a factory-authorized service representative.
SYMPTOM WHO WHAT TO CHECK
(If item is marked X, work should be done by a factory authorized service rep.)
Pilot will not light. User a. Are electrical connections made with a ground?
b. Is gas supply conncection made?
c. Is pilot ignition switch on?
d. Is gas valve turned on?
e. Are building fuses or circuit breakers all right?
f. Are there drafts which could blow out the pilot?
Authorized
Service Rep Only
Steam generator does not fill
with water.
No steam. User a. Is the ON switch depressed?
Service light comes on after
four minutes.
Excessive steam escaping from
rear of unite.
User a. Is the ON switch depressed?
User a. Is the water supply connected?
User a. Is the water spray hose kinked or obstructed?
Authorized
Service Rep Only
g. Is spark ignition cable connected to module? (X)
b. Is the water supply connected?
c. Is the water turned on?
d. Check for low water pressure (less than 30 PSI or 210 kPa).
e. Is the screen at the water connection clogged?
f. Has the steam genrater been delimed?
b. Is the water supply connected?
c. Is the water turned on?
d. Are steamer doors open?
e. Is the steamer generator limed up?
b. Is the water turned on?
c. Has the unit been delimed? (Refer to Cleaning Section)
b. Is the water spray solenoid connected? (X)
c. Is the drain properly vented? (X)
OM-SN-G 17
Page 20
To order parts, contact your authorized
Service Agency. Supply the model
designation, serial number, part description,
part number, quantity, and when applicable,
voltage and phase.
KEY DESCRIPTION PART #
1 RIGHT SIDE PANEL 138532
2 DOOR ASSY, COMPLETE 170128
3 DOOR HANDLE 070123
4 DOOR GASKET 125907
5 LEFT PAN RACK 125901
6 BLOWER COVER/RACK (FAN
BAFFLE)
7 DOOR LATCH PIN 078914
8 DOOR PIN LOCK NUT 003823
9 LEFT SIDE PANEL 138534
10 TIMER KNOB 123100
11 FRONT PANEL OVERLAY 170160
12 TOP PANEL 138536
13 FUNNEL, DELIME 106624
14 BACK PANEL 138530
15 OPTIONAL TABLE 100913
16 DRIP TRAY 094151
17 TIMER FASTENER NUT 101145
18 DRAIN TUBE 138546
19 WATER VALVE SINGLE 071235
20 WATER VALVE DOUBLE 100934
x MOTOR SHAFT SEAL 096868
x OPTIONAL LEGS 041121
x CAVITY FAN 096790
125902
Parts List - 5G-SN
x = Item not depicted/called out in drawings
18 OM-SN-G
Page 21
To order parts, contact your authorized
Service Agency. Supply the model
designation, serial number, part description,
part number, quantity, and when applicable,
voltage and phase.
Parts listed below only apply to a doublestacked unit. Common parts are listed on
page 19.
KEY DESCRIPTION PART #
1 TABLE 138579
2 SPACER 138594
3 FLUE, INSIDE 138406
4 FLUE, VERTICAL 138401
5 DRAIN AND VENT PIPE 138458
6 HOSE 2” ID X 2” LG 090742
7 CLAMP, HOSE 1-3/4” -
2- 1/2” DIA
8 HOSE VENT 138463
9 DRAIN T-CONNECTOR 126003
10 HOSE DRAIN 138471
11 CLAMP, HOSE 9/16” -
1-1/16” DIA
12 BULLET FOOT 042505
13 WATER HOSE 138470
14 HOSE CONNECTOR 101189
015663
099284
Parts List - (2) 5G-SN
OM-SN-G 19
Page 22
To order parts, contact your authorized
Service Agency. Supply the model designation,
serial number, part description, part number,
quantity, and when applicable, voltage and
phase.
KEY DESCRIPTION PART #
1 FUSE, 3 AMP 077853
2 WATER LEVEL PROBES 070178
3 WATER VALVE SINGLE 071235
4 WATER VALVE DOUBLE 100934
5 TRANSFORMER 120V
PRIMARY/ 24V SECONDARY
75VA
6 TRANSFORMER 115/230V
PRIMARY/ 20VAC CT
SECONDARY
7 RELAY, 12VDC 119813
8 RELAY, 24VAC 119814
9 RELAY 24VDC 138420
10 IGNITION MODULE 085153
11 CAPACITOR 096813
12 FUSE HOLDER 077854
13 TERMINAL BLOCK 003887
14 MAIN GAS VALVE 098443
15 GAS VALVE 099906
16 CONTROL BOARD 119801
17 TIMER BOARD 119817
18 DRAIN VALVE 074594
19 READY THERMOSTAT 099947
20 MOTOR ASSY 146880
21 OVERTEMP SENSOR 096892
22 TIMER 096826
23 PILOT SWITCH 087951
24 DOOR SWITCH 096857
X HARNESS, POWER 130397
X HARNESS, CONTROL 130399
X HARNESS, DRAIN 130398
X HARNESS, TRANSFORMER 119871
X HARNESS, DOOR + SWITCH 119878
106233
119815
Electrical Parts List
x = Item not depicted/called out in drawings
20 OM-SN-G
Page 23
To order parts, contact your authorized
Service Agency. Supply the model designation,
serial number, part description, part number,
quantity, and when applicable, voltage and
phase.
KEY DESCRIPTION PART #
1 STEAM GENERATOR 138521
2 CAVITY 138549
3 MANIFOLD ASM -
NATURAL GAS
MANIFOLD ASM - PROPANE 138586
4 INSULATION STEAM
GENERATOR
5 DRAIN HOSE STEAM
GENERATOR
6 DRAIN HOSE 138465
7 HOSE, WATER FILL 138467
8 HOSE CONDESATE 138468
9 HOSE, DELIME (SINGLE
STACK)
10 CAVITY INSULATION 096738
11 WATER FLOW REDUCTION 112720
12 CHECK VALVE 138428
13 GASKET 106232
14 PRESSURE RELIEF 132183
15 HOSE, 10 1/2” STEAM INLET 138445
16 HOSE, 7 7/8” STEAM INLET 138446
17 TRAP 106229
18 HOSE, TRAP 138451
19 TUBE, HIGH FIRE 138425
20 TUBE, LOW FIRE 138426
21 TUBE, PILOT 138427
22 HOSE, VENT 138447
23 DEIME TANK ASM 138415
X HOSE, DELIME (DOUBLE
STACK)
138585
138588
138464
138449
138450
Parts List
x = Item not depicted/called out in drawings
OM-SN-G 21
Page 24
Electrical Schematic
22 OM-SN-G
Page 25
Service Log
Model No: Purchased From:
Serial No: Location:
Date Purchased: Date Installed:
Purchase Order No: For Service Call:
Date Maintenance Performed Performed By
OM-SN-G 23
Page 26
Service Log
Model No: Purchased From:
Serial No: Location:
Date Purchased: Date Installed:
Purchase Order No: For Service Call:
Date Maintenance Performed Performed By
24 OM-SN-G
Page 27
OM-SN-G 25
Page 28
BLODGETT OVEN COMPANY
www.blodgett.com
44 Lakeside Avenue, Burlington, Vermont 05401 USA
Telephone: 866-518-3977
PART NUMBER 170148 REV B (04/11)
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