L&L KILN SERIES:
School-Master Kilns
KILN:

SM28T-3 School Kiln

School Kiln with Intuitive Control

KILN:

SM28T-3 School Kiln

School Kiln with Intuitive Control

    KEY SPECS
  • Polygonal Kilns
  • Medium-Large
    (10.2 cubic feet)
  • One-Touch Control
  • Cone 5, 2170F, 1190C
$4,515
LEAD TIME: 8 to 10 Weeks
WHERE TO BUY
PDF Brochure General Dimension Diagram

Model SM28T-3 School-Master Automatic Kiln with the intuitive One-Touch™ control (designed for schools) mounted in an easy-open piggy-back control panel, with hard ceramic element holders, protected thermocouple, strong solid-top stand, easy-lift spring hinge, 28" diameter by 27" high, 10.2 cubic feet, 3" K23 brick. NEMA 6-50 single phase or 15-50 three phase 6 foot power cord included. C-MET-us listed in the USA & Canada. Maximum temperature is Cone 6 except for 208 volt/singe phase model which is Cone 5. Special FIVE YEAR Limited Warranty.

  • Insulation:
    3" K23 Firebrick
  • Sections:
    Three 9" high sections
  • Inside Dimensions:
    28.00"
    Diameter x
    27.00"
    High (71.12 cm Diameter x 68.58 cm High)
  • Outside Dimensions:
    35.00"
    Wide x
    46.00"
    Deep x
    74.00"
    High (88.9 cm Wide x 116.84 cm Deep x 187.96 cm High)
  • Weight:
    420
    lbs (191 kg)
SKU Model Number Watts Volts Phase Fuse Size
K-S-28T3/21 SM28T-3-208-1Ph 9,980 208 Single Phase 60 Amp
  • Additional Information
  • Amps: 48
  • Wire Connection: NEMA 6-50 1 Phase Plug with six foot cord. Neutral is not used. (Kiln may be direct wired without affecting the MET listing)
  • Wire Gauge for Connection: 6 Ga
  • Branch Fusing: Not Branch Fused
  • Element Wiring: Parallel
  • Max Temperature: Cone 5, 2170F, 1190C
  • Certifications
  • International: Made for all markets except EU
  • CE: Not CE certified
  • UL499: c-MET-us listed to UL499 Standards in the US and Canada
  • Wiring Diagram(s):
K-S-28T3/22 SM28T-3-208-3Ph 14,340 208 Three Phase (Delta) 50 Amp
  • Additional Information
  • Amps: 40
  • Wire Connection: NEMA 15-50 3 Phase Plug with six foot cord. Neutral is not used. (Kiln may be direct wired without affecting the MET listing)
  • Wire Gauge for Connection: 500 mcm
  • Branch Fusing: Not Branch Fused
  • Element Wiring: Parallel
  • Max Temperature: Cone 8, 2280F, 1250C
  • Certifications
  • International: Made for all markets except EU
  • CE: Not CE certified
  • UL499: c-MET-us listed to UL499 Standards in the US and Canada
  • Wiring Diagram(s):
K-S-28T3/31 SM28T-3-240-1Ph 11,500 240 Single Phase 60 Amp
  • Additional Information
  • Amps: 48
  • Wire Connection: NEMA 6-50 1 Phase Plug with six foot cord. Neutral is not used. (Kiln may be direct wired without affecting the MET listing)
  • Wire Gauge for Connection: 6 Ga
  • Branch Fusing: Not Branch Fused
  • Element Wiring: Parallel
  • Max Temperature: Cone 8, 2280F, 1250C
  • Certifications
  • International: Made for all markets except EU
  • CE: Not CE certified
  • UL499: c-MET-us listed to UL499 Standards in the US and Canada
  • Wiring Diagram(s):
K-S-28T3/32 SM28T-3-240-3Ph 16,620 240 Three Phase (Delta) 60 Amp
  • Additional Information
  • Amps: 40.2
  • Wire Connection: NEMA 15-50 3 Phase Plug with six foot cord. Neutral is not used. (Kiln may be direct wired without affecting the MET listing)
  • Wire Gauge for Connection: 500 mcm
  • Branch Fusing: Not Branch Fused
  • Element Wiring: Parallel
  • Max Temperature: Cone 6, 2230F, 1220C
  • Certifications
  • International: Made for all markets except EU
  • CE: Not CE certified
  • UL499: c-MET-us listed to UL499 Standards in the US and Canada
  • Wiring Diagram(s):
K-S-28T3/41 SM28T-3-220-1Ph 10,560 220-230 Single Phase 60 Amp
  • Additional Information
  • Amps: 48
  • Wire Connection: Direct Wire Connection (no cord)
  • Wire Gauge for Connection: 6 Ga
  • Branch Fusing: Not Branch Fused
  • Element Wiring: Parallel
  • Max Temperature: Cone 6, 2230F, 1220C
  • Certifications
  • International: Made for all markets except EU
  • CE: Not CE certified
  • UL499: c-MET-us listed to UL499 Standards in the US and Canada
  • Wiring Diagram(s):
K-S-28T3/52 SM28T-3-380-3PY 15,058 380 Three Phase (Wye) 40 Amp
  • Additional Information
  • Amps: 24.2
  • Wire Connection: Direct Wire Connection (no cord)
  • Wire Gauge for Connection: 8 Ga
  • Branch Fusing: Not Branch Fused
  • Element Wiring: Parallel
  • Max Temperature: Cone 6, 2230F, 1220C
  • Certifications
  • International: Made for all markets except EU
  • CE: Not CE certified
  • UL499: c-MET-us listed to UL499 Standards in the US and Canada
  • Wiring Diagram(s):
K-S-28T3/82 SM28T-3-400-3PY 15,058 400 Three Phase (Wye) 40 Amp
  • Additional Information
  • Amps: 24.2
  • Wire Connection: Direct Wire Connection (no cord)
  • Wire Gauge for Connection: 8 Ga
  • Branch Fusing: Not Branch Fused
  • Element Wiring: Parallel
  • Max Temperature: Cone 6, 2230F, 1220C
  • Certifications
  • International: Made for all markets except EU
  • CE: Not CE certified
  • UL499: c-MET-us listed to UL499 Standards in the US and Canada
  • Wiring Diagram(s):
K-S-28T3/72 SM28T-3-415-3PY 15,058 415 Three Phase (Wye) 40 Amp
  • Additional Information
  • Amps: 24.2
  • Wire Connection: Direct Wire Connection (no cord)
  • Wire Gauge for Connection: 8 Ga
  • Branch Fusing: Not Branch Fused
  • Element Wiring: Parallel
  • Max Temperature: Cone 6, 2230F, 1220C
  • Certifications
  • International: Made for all markets except EU
  • CE: Not CE certified
  • UL499: c-MET-us listed to UL499 Standards in the US and Canada
  • Wiring Diagram(s):

Control

One-Touch™ Intuitive Kiln Control (School-Master, Liberty-Belle, Doll)
Four-Key Control that Redefines Simplicity • Perfect for Schools & Hobbyists
Angled Control Panel
Angled control panel makes viewing control and programming easier.
Easy to Remove & Service Control Panel
Control panel pulls down easily and remain perpendicular to the element box for very easy access. All wiring is neatly laid out in a professional and industrial way with color coding and numbering for easy repair and troubleshooting. Best of all the double panel design results in cooler panels and longer control and relay life.
Protected Thermocouples
Ceramic protection tubes protect the end of the thermocouple.
Heavy-Duty Type K Thermocouples
Thick 8 gauge thermocouples last a long time. Special Limit of Error to ANSI MC96.1 specifications is used.
Mercury Free Contactors
Power Relays are mercury-free to comply with increasing regulation and concern about mercury. Solid State Contactors are available as an option on most L&L Kilns.
On-Off Switch and Panel Fuse
All L&L Kilns come with an on-off switch and panel mounted control fuse. We do not rely on the kiln control to keep the kiln off.

Durability

Hard Ceramic Element Holders Make L&L Kilns More Durable
Durability, Repairability, Better Heat Transfer. The smooth, hard surface of the inside ceramic channel allows the elements to expand and contract freely. No pins! The dense ceramic holders extend element life because they do not insulate the hot elements from the kiln interior.
Solid Wide-View Peephole Plugs
Solid large non-tapered peepholes allow a wider view into the kiln. The peephole plugs are made from solid ceramic and are not as fragile as hollow type plugs used on competitor's kilns.
Molded Ceramic Element Connections
Industrial grade ceramic terminal blocks make changing elements easy. All contact between elements and wire lugs is over a wide surface of heavily torqued stainless steel washers. Wires are not crimped to element ends as in some other brands. This means you can change elements yourself without buying an expensive tool or hiring a kiln repair person.
Solid Super-Strong Aluminized Steel Stand
Aluminized stands are extremely strong and corrosion resistant. They offer solid support under the kiln - unlike spot-welded angle stands that are common in the industry.
Proprietary Reflective Coating Hardens & Seals Brick
Special brick coating hardens and seals brick for durability and cleaner operation.
Stainless Clips Secure Lids to Bands
Stainless Steel clips help the lid stay secure and durable. This extra step ensures that the lid won't slip out of the stainless steel band.
Corrosion Resistant Case
Corrosion resistant materials and methods result in a long-lasting kiln.
Extra Case Clamps
Three case clamps per 9" high kiln section are redundant safety for your L&L kiln.

Ease of Use

Easy-Open, Easy-Load Spring Hinge
Feather-light spring hinge allows full access without a side support bar - for easy loading. Standard on all 10 and 12 sided polygonal kilns.

Serviceability

Sectional Kiln Construction (Most L&L Kilns)
Sectional kiln construction makes kilns easy to move, set up and disassemble for maintenance.
Reversible Bottoms
The bottom can be easily reversed in case of a firing mishap.

Performance

Thermal Ceramics Firebrick
K23 firebrick combines good insulation with strength

Support

Five-Year Limited Warranty (School-Master)
School-Master School kilns come with a special five-year limited warranty.
Superior Technical Support
The combined experience at L&L Kilns in kilns, ceramics, electrical engineering and process engineering is unsurpassed. We work as a team to help you get you answers and help.
Visual Detailed Instruction Manual
The combined experience at L&L Kilns in kilns, ceramics, electrical engineering and process engineering is unsurpassed. We provide a visual parts list with photographs, part numbers, prices and helpful information to reduce confusion when ordering parts. We also include well-vetted information and wisdom from our industry partners to ensure our customers have access to all the basic information necessary to be successful from the first firing.

Safety

Listed to UL499 Standard by MET
Most L&L kilns are MET listed to UL499 standards. Listed kilns include Easy-Fire Pottery Kilns, Easy-Fire-XT Square Pottery Kilns, eQad-Pro Professional Kilns, eFL Front-Loading Kilns, Jupiter Sectional Kilns, DaVinci Square & Rectangular Production Kilns, School-Master School Kilns, Fuego Home Craft Kilns, Doll-Test Kilns, and Liberty-Belle Craft Kilns. Easy-Load Production Front-Loading kilns are MET-Us Listed for US only.

Controls

Genesis Touch Screen Control
The new Genesis control from Bartlett includes a touch screen interface and WIFI connectivity added to the proven software of the DynaTrol. A phone app allows you to monitor your kiln remotely.
Electronic High Limit Back Up Control
Electronic High Limit Back Up Control acts as an upper limit back up to the main control. Back up contactors are also available.
KISS Computer Interface & Datalogger for DynaTrol Control
Control, monitor and record data for up to 10 kilns from your computer for a one-time price.
Solid State Relays
Solid State Relays are quiet and result in longer element life because the switching time is so fast the elements don’t heat and cool as much the way the will with regular mechanical contactors. The whole system includes heat sinks, special fast acting fuses, cooling fan and extra safety relays.

Thermocouples

Type S Platinum Thermocouples
Type S Platinum Thermocouples are recommended for high fire applications. NOTE: Price of upgrade is per each thermocouple.
Pyrocil Metal Sheathed Industrial Thermocouples
Pyrocil thermocouples are sensitive but limited to about 2200°F but offer greater sensitivity to temperature change and so may be appropriate in applications below 2200°F that require sensitivity. NOTE: Price of upgrade is per each thermocouple.

Miscellaneous

Rolling Kiln Stand
L&L's rolling kiln stand features heavy gauge (14 ga) galvannealed steel construction with multiple bends for extra strength, steel swivel locking casters, integrated vent collection box support, and guide rails for the kiln. Each size is fitted to the kiln.
Export & Special Crating Options
Export crates, ISPM-15 Skids for export, and special pallet designs for unloading Easy-fire kilns without a forklift.

Vents

Vent-Sure Downdraft Kiln Vent System
A Critical component in the longevity of your kiln!The Vent-Sure automatic kiln vent helps prevent corrosion on the inside and outside of your kiln.
Vent Control Programmed on DynaTrol & Genesis
The Vent Control allows you to automatically control the operation of the Vent-Sure kiln vent with one of the outputs from the DynaTrol (or Genesis).
Vent Doubler System
The Vent Doubler allows you to use one vent on two kilns.

Kiln Furniture

Furniture Kits
Kiln furniture kits are the recommended set of ceramic shelves, posts and kiln wash that go with each kiln model. These are for loading the work in the kiln.
Safety Gloves
These safety gloves are perfect for handling hot work when unloading a kiln.

Power

120 Volt Power Supply & Electrical Noise Filter For Automatic Kilns
This option helps protect your control from electrical noise
  • Kiln:
    48 IN Wide X 40 IN Deep X 48 IN High
    (
    122 CM Wide X 102 CM Deep X 122 CM High
    )
  • Ship Weight:
    480
    lbs (218 kg)
  • Kiln with Furniture Kit:
    48 IN Wide X 40 IN Deep X 61 IN High
    (
    122 CM Wide X 102 CM Deep X 155 CM High
    )
  • Ship Weight:
    600
    lbs (272 kg)
  • Kiln with Vent:
    48 IN Wide X 40 IN Deep X 61 IN High
    (
    122 CM Wide X 102 CM Deep X 155 CM High
    )
  • Ship Weight:
    495
    lbs (225 kg)
  • Kiln with Vent and Furniture Kit:
    48 IN Wide X 40 IN Deep X 61 IN High
    (
    122 CM Wide X 102 CM Deep X 155 CM High
    )
  • Ship Weight:
    615
    lbs (279 kg)
  • Packaging:
    Skidded Carton with Foam-in-Place packaging

Turntable View

SM28T-3 School Kiln
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Description

Flagship Multi-Purpose Kiln

Studio Front-Loader

Industrial Grade Front-Loader
Price $4,525.00 $8,475.00 $13,900.00
Type Polygonal Kilns Front-Loading Kilns Front-Loading Kilns
Volume 10.2 cubic feet 10.2 cubic feet 9.0 cubic feet
Temperature Cone 5, 2170F, 1190C Cone 10, 2350F, 1290C Cone 10, 2350F, 1290C