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SWR06ED - Walk-In Oven 

LEWCO Normal Duty Batch Ovens offer high quality at economical prices. The SWR series features a rear mounted heater box, which is ideal for installations with height restrictions. Heavy-duty construction and industry standard components yield durable and reliable equipment. Each unit comes complete with a one year warranty and is fully assembled, wired, and tested prior to shipment. All LEWCO ovens are manufactured to meet the requirements of NFPA 86, the national standard for industrial ovens and furnaces.

  • Cost-Effective
  • Dependable
  • Energy Efficient
  • Quality Built
  • Safe Operation
ISO 9001:2008 Registered Company

Operating Temperature 

200°F (93°C) to 650°F (343°C)


Heating Medium

Electric, low watt density Incoloy® heaters provide years of trouble free service.  Standard heater bank assemblies are installed in high velocity ductwork to maximize heat transfer.


Airflow PatternDual Airflow Diagram Product Page

Dual (Combination) Airflow: Hot air is supplied from both of the side walls and returned through a top plenum.


Input Voltage

Standard: 480/3/60. Please consult factory for additional options.


Control System

LEWCO’s standard control package includes a single set-point process temperature controller and redundant high-limit controller. Circulation fan(s) and exhaust fan(s) include air proving circuits that are electrically interlocked with the heating circuit. All controls are housed in a NEMA 12 enclosure employing a full voltage lockable disconnect switch. Controls are wired to NFPA 70 and 79 electrical standards. Other third party certifications available.

     Optional:NS Controls For Product Page

Door Switch

Disables heat when door is opened on electrically heated ovens; holds burner at low fire on fuel-fired ovens.

Batch Timer

Infinitely adjustable up to 100 hrs., includes illuminated On/ Off switch to indicate timed operation and audible alarm when time has elapsed.

Ramp/ Soak Controller

Programmable ramp/ soak temperature controller with capability to store different recipes with multiple segments.

Chart Recorder

Single pen circular paper chart recorder for continuous monitoring of temperature data. Comes with (1) Type “J” thermocouple input.

Zero Speed Switch for Fans

Minimizes nuisance tripping associated with standard air flow switch(es).


Programmable Logic Controller for processes with numerous inputs and outputs; or requiring automation of material handling equipment. The PLC can also allow for Ethernet connectivity for remote system monitoring.

Touchscreen HMI

Human Machine Interface provides the operator easy access and control of different parts of the equipment. Allows real time monitoring and provides feedback of the process in a visual, easy to read format. 

Composite Curing Controls

Data Logger: Multiple input digital data logger continuously records temperature and other process data. Allows downloading of digital data files through USB or Ethernet connection. Data can also be viewed on a full color display or on a web server when connected to a network.

Thermocouple Jacks: Thermocouple jack panel for high-temperature Type “J” thermocouples, located inside the oven. Includes wiring to data logger if purchased.

Vacuum Ports: ½” NPT thru-wall vacuum ports, each with vacuum rated manual ball valve and indicating gauge. All ports are connected to a 1” NPT header.

Vacuum Pump: Includes motor starter circuit and connection to vacuum header pipe.

Model (NFPA Class B)Overall DimensionsDoor Swing RadiusWorkspace DimensionsWorkspace Volume (cubic ft.)Heater Bank
Circulating Fan
Air Changes per MinuteExhaust Fan Capacity (CFM)Exhaust Motor (HP)Solvents per Batch
Ships Fully Assembled
821077324"4848608036 1,700 121.25N/AN/A0Yes
811068424"4848729645 2,000 1 1/220.83N/AN/A0Yes
8310610824"48489612854 2,500 219.53N/AN/A0Yes
831348424"48727214454 3,000 220.83N/AN/A0Yes
8514010824"48729619263 4,000 320.83N/AN/A0Yes
SWR06ED-48-96-72851648424"48967219263 4,000 320.83N/AN/A0Yes
SWR06ED-48-96-968916810824"48969625672 5,000 319.53N/AN/A0Yes
951187230"60606012545 2,500 220.00N/AN/A0Yes
SWR06ED-60-60-72951228430"60607215054 3,000 220.00N/AN/A0Yes
SWR06ED-60-60-969712810830"60609620063 4,000 320.00N/AN/A0Yes
SWR06ED-60-72-72971348430"60727218054 3,500 319.44N/AN/A0Yes
SWR06ED-60-72-969914410830"60729624072 4,500 318.75N/AN/A0Yes
SWR06ED-60-96-9610317410830"60969632081 6,000 318.75N/AN/A0Yes
1091408436"72727221663 4,000 318.52N/AN/A0Yes
SWR06ED-72-72-9611315010836"72729628872 5,500 319.09N/AN/A0Yes
SWR06ED-72-96-9612117410836"72969638490 8,000 520.83N/AN/A0Yes
12519810836"721209648099 9,000 7 1/218.75N/AN/A0Yes
SWR06ED-84-84-841291629642"84848434381 7,000 520.41N/AN/A0Yes
SWR06ED-84-96-841331749642"84968439290 8,000 520.41N/AN/A0Yes
1372059642"841208449099 10,000 7 1/220.41N/AN/A0Yes
14121010842"8412096560108 12,000 7 1/221.43N/AN/A0Yes
SWR06ED-96-96-9614918110848"969696512108 10,000 7 1/219.53N/AN/A0Yes
15321010848"9612096640126 12,000 7 1/218.75N/AN/A0Yes
16124310848"9614496768144 16,000 1020.83N/AN/A0Yes
16726710848"9616896896162 18,000 1520.08N/AN/A0Yes
18521910860"12012096800144 16,000 1020.00N/AN/A0Yes
19322413260"1201201201,000162 20,000 1520.00N/AN/A0Yes
19124310860"12014496960162 18,000 1518.75N/AN/A0Yes
19721813260"1201441201,200189 24,000 1520.00N/AN/A0Yes
19324210860"120168961,120180 22,000 1519.64N/AN/A0Yes
20324213260"1201681201,400207 26,000 1518.57N/AN/A0Yes
Model (NFPA Class A)Overall DimensionsDoor Swing RadiusWorkspace DimensionsWorkspace Volume (cubic ft.)Heater Bank
Circulating Fan
Air Changes per MinuteExhaust Fan Capacity (CFM)Exhaust Motor (HP)Solvents per Batch
Ships Fully Assembled
8210712424"4848608045 1,700 121.25621/40.04Yes
8110613524"4848729654 2,000 1 1/220.83621/40.04Yes
8310615924"48489612863 2,500 219.53621/40.04No
8313413524"48727214463 3,000 220.83621/40.04Yes
8514015924"48729619272 4,000 320.83621/40.04No
SWR06ED-48-96-728516413524"48967219272 4,000 320.83621/40.04Yes
SWR06ED-48-96-968916815924"48969625681 5,000 319.53621/40.04No
9511812330"60606012554 2,500 220.00621/40.04Yes
SWR06ED-60-60-729512213530"60607215063 3,000 220.00621/40.04Yes
SWR06ED-60-60-969712815930"60609620072 4,000 320.00621/40.04No
SWR06ED-60-72-729713413530"60727218063 3,500 319.44621/40.04Yes
SWR06ED-60-72-969914415930"60729624081 4,500 318.75621/40.04No
SWR06ED-60-96-9610317415930"609696320108 6,000 318.751001/40.07No
10914013536"72727221672 4,000 318.52621/40.04Yes
SWR06ED-72-72-9611315015936"72729628881 5,500 319.09621/40.04No
SWR06ED-72-96-9612117415936"729696384108 8,000 520.831001/40.07No
12519815936"7212096480135 9,000 7 1/218.751001/40.07No
SWR06ED-84-84-8412916214742"848484343108 7,000 520.411001/40.07No
SWR06ED-84-96-8413317414742"849684392108 8,000 520.411001/40.07No
13720514742"8412084490162 10,000 7 1/220.412501/40.18No
14121015942"8412096560162 12,000 7 1/221.432501/40.18No
SWR06ED-96-96-9614918115948"969696512162 10,000 7 1/219.532501/40.18No
15321015948"9612096640171 12,000 7 1/218.752501/40.18No
16124315948"9614496768189 16,000 1020.832501/40.18No
16726715948"9616896896207 18,000 1520.082501/40.18No
18521915960"12012096800189 16,000 1020.002501/40.18No
19322418360"1201201201,000225 20,000 1520.002501/40.18No
19124315960"12014496960207 18,000 1518.752501/40.18No
19721818360"1201441201,200234 24,000 1520.002501/40.18No
19324215960"120168961,120225 22,000 1519.642501/40.18No
20324218360"1201681201,400288 26,000 1518.5775010.37No

Note: Sizes are approximate. LEWCO, Inc. reserves the right to change specifications without notice. 

Standard oven construction includes a 16 gauge aluminized steel interior with a 18 gauge cold rolled steel exterior. Heat loss is minimized by a unique wall design featuring a welded inner shell and a completely isolated outer frame and covers.



Heavy-duty doors on an isolated door frame minimize heat loss. Wire core gaskets create a tight seal for efficient heating. Standard doors are bi-parting swing at one end and include explosion venting latches.Door N Floor 3

     Standard Options:

  • Vertical lift guillotine door 
  • Door windows



Standard ovens operating at or above 650°F include an insulated base (100 p.s.f. max)

     Standard Options:

  • Insulated with (1) pair inverted angle track
  • Insulated with (1) pair 6” wide wheel guides

LEWCO industrial ovens are designed and manufactured to industry standards. Our engineers regularly work to keep updated with the latest revisions in industry codes. If there is a specific industry standard or code compliance that you require for your process heating application, please contact one of our highly knowledgeable applications engineers to learn how LEWCO can help!


About NFPA 86

The National Fire Protection Association’s standard, NFPA 86, documents the guidelines for the safe operation of industrial ovens and furnaces. All LEWCO ovens are designed and manufactured to meet the requirements of this standard. Oven and furnaces in which flammable volatiles or combustible materials are present in the work space are classified by NFPA 86 as “Class A.” Similarly, ovens and furnaces in which no flammable volatiles or combustible materials are present are classified as “Class B.” Due to the risk of fire or explosion, NFPA 86 requires specific safety equipment for all Class A ovens and furnaces. Fuel gas-fired ovens and furnaces also require safety equipment.

  • Powered exhaust of capacity determined by maxium solvent loading.
  • Explosion relief of adequate area determined by oven or furnace workspace volume.


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