SC-6DS,SC-10DS and SC-16DS
DIRECT STEAM CONVECTION STEAMER
INSTALLATION – OPERATION – MAINTENANCE
BLODGETT OVEN COMPANY
44 Lakeside Avenue, Burlington, Vermont 05401 USA Telephone (800) 331-5842, (802) 860-3700 Fax: (802) 864-0183
S00048 Rev B (12/04)
TABLE OF CONTENTS
DESCRIPTION
PAGE
Important Notes
2
4
5
8
9
9
1.0 Service Connections
2.0 Installation Instructions
3.0 Operating Instructions
4.0 Periodic Maintenance
5.0 Troubleshooting
3
1.0 SERVICE CONNECTIONS
ELECTRICAL CONNECTION: 1/2" conduit connection to controls. 120VAC-60Hz-1PH 2 AMPS per compartment or to be
as specified on data plate.
DRAIN: 2"IPS piped to open floor drain. No Solid Connection.
COLD WATER: 3/8" O.D. tubing at 25-50 PSI(170-345 kPa).
STEAM SUPPLY: 3/4" IPS for in coming steam at 60 lbs./hr. @ 10 psi. (27 kg/hr @ 69 kPa) min.*
S
24 [610]
DIMENSIONS ARE IN INCHES [MM]
15.25 [387]
2 [51]
2.75 [70]
3.5 [89]
0 [0]
2.5 [64]
0 [0]
10 [254]
1.5 [38]
S
9.5 [241]
S
20.5 [521]
28 [711]
18 [457] SC-6DS &
SC-10DS
S
17 [432]
8.75 [222]
6 [152] SC-16DS
5.75 [146]
0 [0]
SC-6DS & SC-10DS TOP VIEW
SC-16DS TOP VIEW
REAR FLANGED FOOT DETAIL
2 EQUALLY SPACED Ø7/16" [11mm] HOLES
ON 2.5 [63] B.C.
4
2.0 INSTALLATION INSTRUCTIONS
Ideally an exhaust system should be located directly above the appliance to exhaust
steam and heat generated by the appliance.
1. Set the unit in place and level using a spirit level.
2. Ascertain that a floor drain (open gap) is convenient to the appliance drain.
3. Mark hole locations on floor through anchoring holes provided in flanged adjustable
feet.
4. Remove appliance and drill holes in locations marked on floor and insert proper
anchoring devices.
5. Set unit back in position and re-level left to right and front to back.
6. Bolt and anchor appliance securely to the floor.
7. Seal bolts and flanged feet with Silastic or equivalent compound.
8. Make service connections as indicated.
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 on
the disconnect switch to indicate that you are working on the circuit.
Use copper wire suitable for at least 200 degrees Fahrenheit (90 degrees Celsius). The
steamer must be grounded. The wiring diagram is located on the inside right hand panel
as you face the steamer.
5
INFORMATION TO STEAM FITTER
1. Each cooking compartment requires approximately 1 BHP (34.5 lbs of steam per
hour) to operate satisfactorily.
2. Assuming availability of 30 psi supply steam pressure immediately to the appliance,
then pipe sizes of ½" or 3/4" or 1" will deliver respectively 90, 165 or 385 lbs. of
steam per hour to the appliance Heat Exchanger. From the foregoing to use ½" pipe
line would most likely prove inadequate.
An extremely important consideration is the pressure drop that will occur through the
steam supply line from its point of origin to the appliance. The greater the length of
piping and number of valves and elbows, the greater will be the pressure losses.
Consider a pressure drop of 1 (one) psi for each straight length of pipe equivalent to 120
diameters of that pipe. Thus, a 1" pipe having a straight length of 120" (10 feet) is
equivalent to 120 diameters of that pipe and will have a pressure loss of 1 psi through
that pipe.
Example:
120 Diameters of 1” pipe
Equivalent to 120” (10 ft)
9 p.s.i.
Available
Pressure
10 p.s.i.
Supply
Pressure
Note, in 3/4" pipe size, that a Standard 90º Elbow and Angle Valve and a Globe Valve
are equivalent to 1.8 feet, 10 feet and 18 feet respectively of straight pipe.
Similarly, in a 1" pipe size, a standard 90º Elbow and Angle Valve and a Globe Valve are
equivalent to 2.2 feet, 12 feet and 23 feet respectively of straight pipe.
Example:
20’
GLOBE VALVE
1” PIPE
3’
40 PSI
SUPPLY
90° ELBOW
17’
10’
32 PSI
6
Total of above = 20 + 2.2 + 3 + 2.2 + 17 + 23 + 10 + 2.2 = 79.6 feet. Since each 10 feet
is equivalent to 1 psi pressure loss, 79.6 feet is equivalent to approximately 32 psi from
an original Boiler supply of 40 psi.
It is suggested that, wherever possible, the steam supply line to the appliance is a
separate line from the steam source. If the appliance must be supplied from a line
supplying other appliances, the pipe sizes and pressure will have to be verified. Further,
during idle periods, when the steam in the supply line is not in use, water will form from
condensed steam in the supply line. It is advisable to prevent water pockets from
forming in the steam line and impeding the steam flow when it is required. Therefore, the
steam supply line should be installed level or run slightly downwards towards the
appliance. Install a Ball Float Trap near the appliance to drain out water (condensed
steam) from the line to assure clean dry steam to the appliance.
2
1
3
TO HEAT
EXCHANGER
INLET
TO DRAIN
7
3.0 OPERATING INSTRUCTIONS
CAUTION: Live steam and accumulated hot water in the compartment may
be released when the door is opened
START-UP
Start-up procedures for the steamer must be completed once daily prior to operation.
1. Turn on the water and steam supply to the appliance.
2. Open the cabinet door and turn the power switch to ON. A pilot light comes on
indicating the appliance is ready to begin operation. With the READY pilot on,
preheat each steamer compartment for one minute when the steamer is to be fist
used for the day or whenever the compartment is cold.
OPERATION
1. With cooking compartment preheated and ready pilot light on, place pans of food to
be cooked into compartment and shut door.
2. Set timer to cooking time desired. Cooking cycle may be interrupted at any time by
opening door and resumed again by closing door.
3. When buzzer sounds, it indicates the end of the cooking cycle and that no more
steam is entering the compartment. Cooking pilot light will go off and ready pilot light
will come on. Buzzer must be shut off by turning the timer to its off position.
CAUTION: An obstructed drain can cause personal injury or property
damage.
Frequently check that the compartment drain and plumbing is free of all obstructions.
Never place food containers, food or food portion bags in the cooking compartment in
such a way that the compartment drain becomes obstructed.
Each compartment is equipped with a removable drain screen. Frequently check the
drain screen for accumulation of food particles. Should food particles accumulate
against, or clog the drain screen, remove it, clean it thoroughly and then replace it in its
original position.
SHUT DOWN
1. To shut down cooking compartment, set timers to their OFF position and leave doors
slightly open.
2. At the end of the day, open the door of the cabinet base and turn off power switch.
Turn off external steam supply valve.
8
4.0 PERIODIC MAINTENANCE
Never spray water into electric controls.
CLEANING
1. Keep exposed cleanable areas of unit clean at all times.
2. Thoroughly wash oven cavities, door liners, and pan racks at the end of each day or
as required with a mild detergent and water to prevent bacterial growth and odors.
3. Remove drain screens from inside compartment drains. Using a plastic bottle brush
and mild detergent, clean inside the drain opening ensuring there is no food residue
or blockage. Clean the drain screen and replace in its original position.
4. Wash gasket sealing surface with mild detergent to remove harmful food acids and
rinse.
5. Keep all exposed cleanable areas of unit clean at all times. DO NOT GET WATER
IN ELECTRICAL BOX OR ANY ELECTRICAL COMPONENTS.
ADJUSTMENTS
At least twice a year have an authorized service person clean and adjust the unit for
maximum performance.
5.0 TROUBLESHOOTING
DOOR LEAKS
1. Check for damage to door gasket.
2. Gasket may be adjusted if necessary by turning the screws in the gasket plate
counter clockwise.
WATER ACCUMULATES IN THE COMPARTMENT
1. Compartment drain screen clogged. Remove and clean thoroughly and then
replace.
9
|