KILN:
SM28T-3 School Kiln

School Kiln with Intuitive Control

KILN:
SM28T-3 School Kiln

School Kiln with Intuitive Control

    KEY SPECS
  • Medium-Large
    (10.2 cubic feet)
  • One-Touch Control
  • Cone 5, 2170F, 1190C
$3,950
LEAD TIME: 4 to 6 Weeks

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.
  • Wire Gauge for Connection: 500 mcm
  • 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.
  • 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.
  • 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-28T3/32 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.
  • 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: 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-28T3/52 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

Four-Key Control that Redefines Simplicity • Perfect for Schools & Hobbyists
Angled control panel makes viewing control and programming easier.
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.
Ceramic protection tubes protect the end of the thermocouple.
Thick 8 gauge thermocouples last a long time. Special Limit of Error to ANSI MC96.1 specifications is used.
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.
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

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 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.
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.
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.
Special brick coating hardens and seals brick for durability and cleaner operation.
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 materials and methods result in a long-lasting kiln.
Three case clamps per 9" high kiln section are redundant safety for your L&L kiln.

Ease of Use

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 makes kilns easy to move, set up and disassemble for maintenance.
The bottom can be easily reversed in case of a firing mishap.

Performance

K23 firebrick combines good insulation with strength

Support

School-Master School kilns come with a special five-year limited warranty.
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.
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

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.

Vents

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.
The Vent Doubler allows you to use one vent on two kilns.

Kiln Furniture

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.
These safety gloves are perfect for handling hot work when unloading a kiln.

Controls

All power is switched off with a 50 amp power switch before the door can physically be opened. (Easy-Fire & School-Master Kilns only).

Miscellaneous

This special Seismic Kiln Rack and Brace is designed to prevent a kiln from falling over during an earthquake.
  • 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
Comparison Kilns
e28T-3 Pottery Kiln e2327-XT Pottery Kiln eFL2626 Front-Loading Kiln EL2427-H Front-Loading Kiln
Kiln e28T-3 Pottery Kiln e2327-XT Pottery Kiln eFL2626 Front-Loading Kiln EL2427-H Front-Loading Kiln
Description

Flagship Multi-Purpose Kiln

Square Easy-Fire Kiln

Studio Front-Loader

Industrial Grade Front-Loader

Price $4,050.00 $4,750.00 $6,200.00 $10,525.00
Type Polygonal Kilns Square & Rectangular Kilns Front-Loading Kilns Front-Loading Kilns
Volume 10.2 cubic feet 7.6 cubic feet 10.2 cubic feet 9.0 cubic feet
Temperature Cone 5, 2170F, 1190C Cone 5, 2170F, 1190C Cone 10, 2350F, 1290C Cone 10, 2350F, 1290C