Blodgett 981, 966 Operator’s Manual
900 SERIES
ROASTING, BAKING AND PIZZA OVEN
INSTALLATION - OPERATION - MAINTENANCE
BLODGETT OVEN COMPANY
www.blodgett.com
44 Lakeside Avenue, Burlington, Vermont 05401 USA Telephone: (802) 658-6600 Fax: (802)864-0183
PN 11356 Rev L (11/17)
© 2017 - G.S. Blodgett Corporation
Your Service Agency’s Address:
Model
Serial number
Oven installed by
Installation checked by
IMPORTANT
TABLE OF CONTENTS
WARNING: Improper installation, adjustment, alternation,
service or maintenance can
cause property damage, injury or death. Read the instllation, operation and maintenance instructions thoroughly
before installing or servicing
this equipment.
INSTRUCTIONS TO BE FOLLOWED IN THE EVENT THE
USER SMELLS GAS MUST BE
POSTED IN A PROMINENT LOCATION. This information may
be obtained by contacting your
local gas supplier.
FOR YOUR SAFETY
Do not store or use gasoline or
other ammable vapors or liquids in the vicinity of this or any
other appliance.
The information contained in this
manual is important for the proper installation, use, and maintenance of this oven. Adherence
to these procedures and instructions will result in satisfactory
baking results and long, trouble free service. Please read
this manual carefully and retain
it for future reference.
INSTALLATION
Oven Description and Specications ....................................... 2
Delivery and Location .................................................... 4
Oven Assembly .......................................................... 5
Packaging ........................................................... 5
Leg Attachment ...................................................... 5
Caster Attachment .................................................... 5
Double Section Assembly ............................................. 6
Ultra Rokite Deck .................................................... 6
Steam Injection .......................................................... 7
Ventilation ............................................................... 8
Utility Connections - Standards and Codes ................................ 10
Gas Connection......................................................... 11
Gas Piping.......................................................... 11
Pressure Regulation and Testing ...................................... 12
Gas Hose Restraint ................................................. 13
Initial Startup ........................................................... 14
OPERATION
Safety Information ....................................................... 15
Oven Control ........................................................... 16
Suggested Times and Temperatures ...................................... 17
MAINTENANCE
Cleaning and Preventative Maintenance .................................. 19
Troubleshooting Guide .................................................. 20
ERRORS: Descriptive, typographic or pictorial errors are
subject to correction. Specications are subject to change
without notice.
Installation
Oven Description and Specications
The 900 Series enjoys the distinction of having the longest continuous production run of any oven manufactured
by the G. S. Blodgett Company since its founding in 1848.
The rst 900 oven was marketed in 1940 and while advancements in metallurgy and more convenient and reliable controls have been incorporated over the years, the
basic design of this unit has remained unchanged since
its inception.
GAS RATINGS
Natural Gas Propane
US Units SI Units US Units SI Units
Heating Value 1000 BTU/hr 37.3 MJ/m3 2550 BTU/hr 95.0 MJ/m3
Specic Gravity (air=1.0) 0.63 0.63 1.53 1.53
Gas Manifold Pressure 5.0” W.C. 1.25 kPa 10.0” W.C. 2.49 kPa
Oven Input
901
911
911P
951
961
961P, 966, 981
Main Burner Orice Size
901
911
911P
951
961
961P, 966, 981
Pilot Burner Orice Size 0.18” .45 mm .010” .25 mm
NOTE: * - Multiple Twist Drill
NOTE: Orice sizes given are at sea level.
22,000 BTU
20,000 BTU
27,000 BTU
38,000 BTU
37,000 BTU
50,000 BTU
45 MTD*
46 MTD*
42 MTD*
34 MTD*
34 MTD*
30 MTD*
In establishing this record, the 900 Series has set industry
wide standards for excellence in baking characteristics,
performance, and reliability. In its primary applications, it
remains unsurpassed for product quality. Simplicity of design and quality construction throughout assure years of
trouble-free service if equipment is installed properly and
given minimal periodic maintenance.
6.4 KW
5.9 KW
7.9 KW
11.1 KW
10.8 KW
14.6 KW
2.08 mm
2.05 mm
2.35 mm
2.8 mm
2.8 mm
3.25 mm
22,000 BTU
20,000 BTU
27,000 BTU
38,000 BTU
37,000 BTU
50,000 BTU
54 MTD*
55 MTD*
53 MTD*
49 MTD*
49 MTD*
45 MTD*
6.4 KW
5.9 KW
7.9 KW
11.1 KW
10.8 KW
14.6 KW
1.39 mm
1.3 mm
1.5 mm
1.85 mm
1.85 mm
2.1 mm
2
Installation
Oven Description and Specications
7” High Compartment
911 - 33” x 22”
911-P - 33” x 22”
961 - 42” x 32”
961-P - 42” x 32”
12” High Compartment
901 - 33” x 22”
951 - 42” x 32”
Two 7” High Compartments
981 - 42” x 32”
16” High Compartment
966 - 42” x 32”
Figure 1
3
Installation
Delivery and Location
DELIVERY AND INSPECTION
All Blodgett ovens are shipped in containers to prevent
damage. Upon delivery of your new oven:
• Inspect the shipping container for external damage.
Any evidence of damage should be noted on the
delivery receipt which must be signed by the driver.
• Uncrate the oven and check for internal damage.
Carriers will accept claims for concealed damage if
notied within fteen days of delivery and the shipping container is retained for inspection.
The Blodgett Oven Company cannot assume responsibility for loss or damage suffered in transit. The carrier assumed full responsibility for delivery in good order when
the shipment was accepted. We are, however, prepared
to assist you if ling a claim is necessary.
OVEN LOCATION
The well planned and proper placement of your oven will
result in long term operator convenience and satisfactory
performance.
The following clearances must be maintained between
the oven and any combustible or non-combustible construction.
• Oven body right side - 6” (15cm)
• Oven body left side - 6” (15cm)
• Oven body back - 6” (15cm)
• Single and stacked oven bottom - 6” (15cm)
Area must be accessible for proper servicing.
NOTE: On gas models, routine servicing can usually be
accomplished within the limited movement provided by the gas hose restraint. If the oven needs
to be moved further from the wall, the gas must
rst be turned off and disconnected from the oven
before removing the restraint. Reconnect the restraint after the oven has been returned to its normal position.
It is essential that an adequate air supply to the oven be
maintained to provide a sufcient ow of combustion and
ventilation air.
• Place the oven in an area that is free of drafts.
• Keep the oven area free and clear of all combus-
tibles such as paper, cardboard, and ammable
liquids and solvents.
• Do not place the oven on a curb base or seal to a
wall. Either condition will restrict the proper ow of
combustion and ventilation air resulting in damage to
the oven.
4
Installation
Oven Assembly
PACKAGING
Before beginning assembly of the oven, check for all necessary components. In addition to the oven itself, legs, a
proper vent, and/or other accessories may be required.
900 Series ovens are packaged as follows:
Single Section Ovens
The following are packed in the oven:
• A set of 27-1/2” (70 cm) legs with attaching hardware.
• Either a canopy or direct vent as specied
• Either a natural gas or propane gas pressure regula-
tor as required.
Multiple Section Ovens
The following are packed inside the bottom section:
• A set of legs of the appropriate length
• Either a canopy or direct vent as specied
• A back pipe of appropriate length with either a natural gas or propane gas regulator attached
Additional Packaging
• Ultra Rokite decks for all 900 Series are packed in a
separate crate.
CASTER ATTACHMENT
1. Bolt supports to oven with 1/2-13 hex head bolts
(casters with brakes should be facing front of oven.)
2. Carefully place oven onto the casters. (It will be necessary to have several persons lift oven off the pallet
and set it onto the casters). Engage brakes on front
casters.
NOTE: A xed restraint must be provided if casters
are used in conjunction with a exible connector for movable appliances. This restraint
must secure the oven to a non-movable surface to eliminate stress on the connector. If
the oven is moved, the restraint must be reconnected after the oven is returned to it’s
normal position.
Restraint Cable
Bracket
• The top section of multiple section ovens will always
have the crown angle in position.
LEG ATTACHMENT
1. Put the oven onto a lift with the bottom of the oven
down.
2. Each leg is attached by two bolts to the underside of
the oven base frame.
Figure 2
Figure 3
5
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