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EWT05ED - Walk-In Oven 

LEWCO Enhanced Duty Batch Ovens offer all of the same construction features as the normal duty ovens; however the performance is “enhanced” by adding additional heat capacity and larger circulation fans. Additionally, all enhanced duty walk-in ovens guarantee a temperature uniformity of +/- 10°F. The EWT series features a top mounted heater box, which creates a smaller foot print and permits pass-through processing. 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 ovens and furnaces. 

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

Operating Temperature 

200°F (93°C) to 500°F (260°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 LoggerMultiple 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
70598934"4848608045 1,700 121.25N/AN/A0Yes
EWT05ED-48-48-72705910234"4848729645 2,000 1 1/220.83N/AN/A0Yes
705912634"48489612854 2,500 219.53N/AN/A0Yes
EWT05ED-60-60-6082719040"60606012545 2,500 220.00N/AN/A0Yes
EWT05ED-60-60-72827110740"60607215054 3,000 220.00N/AN/A0Yes
EWT05ED-60-60-96827113840"60609620063 4,000 320.00N/AN/A0Yes
EWT05ED-72-72-72948311446"72727221663 4,000 318.52N/AN/A0Yes
EWT05ED-72-72-96948314646"72729628872 5,500 319.10N/AN/A0No
9413114946"721209648090 9,000 7 1/218.75N/AN/A0Yes
EWT05ED-84-84-841069513552"84848434372 7,000 520.41N/AN/A0Yes
EWT05ED-84-96-8410610713652"84968439281 8,000 520.41N/AN/A0Yes
10613114152"841208449090 10,000 7 1/220.41N/AN/A0Yes
10613115952"841209656099 12,000 7 1/221.43N/AN/A0No
EWT05ED-96-96-9611810715358"96969651290 10,000 7 1/219.53N/AN/A0No
11813115958"9612096640108 12,000 7 1/218.75N/AN/A0No
11815516658"9614496768117 16,000 1020.83N/AN/A0No
11817916758"9616896896144 18,000 1520.10N/AN/A0No
11820317458"96192961,024153 20,000 1519.53N/AN/A0No
11825118058"96240961,280180 24,000 1518.75N/AN/A0No
81225113658"962401201,600198 30,000 2018.75N/AN/A0No
11829918958"96288961,536207 30,000 2019.53N/AN/A0No
11829922558"962881201,920225 40,000 2020.83N/AN/A0No
11834720158"96336961,792225 40,000 2022.32N/AN/A0No
11834722558"963361202,240261 40,000 2017.86N/AN/A0No
14213116670"12012096800117 16,000 1020.00N/AN/A0No
14213119870"1201201201,000153 20,000 1520.00N/AN/A0No
14215516770"12014496960153 18,000 1518.75N/AN/A0No
14215520470"1201441201,200162 24,000 1520.00N/AN/A0No
14217917970"120168961,120162 22,000 1519.64N/AN/A0No
14217920570"1201681201,400180 26,000 1518.57N/AN/A0No
14220318070"120192961,280171 24,000 1518.75N/AN/A0No
14220321370"1201921201,600198 30,000 2018.75N/AN/A0No
14225118970"120240961,600198 30,000 2018.75N/AN/A0No
14225122570"1202401202,000225 40,000 2020.00N/AN/A0No
14229920170"120288961,920225 40,000 2020.83N/AN/A0No
14229923070"1202881202,400261 50,000 2020.83N/AN/A0No
14234720170"120336962,240261 40,000 2017.86N/AN/A0No
14234723070"1203361202,800288 50,000 2017.86N/AN/A0No
(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
705911634"4848608054 1,700 121.25621/40.05Yes
705912934"4848729654 2,000 1 1/220.83621/40.05Yes
705915334"48489612863 2,500 219.53621/40.05No
827111740"60606012554 2,500 220.00621/40.05Yes
EWT05ED-60-60-72827113440"60607215063 3,000 220.00621/40.05Yes
EWT05ED-60-60-96827116540"60609620072 4,000 320.00621/40.05No
948314146"72727221672 4,000 318.52621/40.05Yes
EWT05ED-72-72-96948317346"72729628881 5,500 319.10621/40.05No
9413117646"7212096480108 9,000 7 1/218.751001/40.08No
EWT05ED-84-84-841069516252"84848434399 7,000 520.411001/40.08No
EWT05ED-84-96-8410610716352"84968439299 8,000 520.411001/40.08No
10613116852"8412084490153 10,000 7 1/220.412501/40.21No
10613118652"8412096560153 12,000 7 1/221.432501/40.21No
EWT05ED-96-96-9611810718058"969696512153 10,000 7 1/219.532501/40.21No
11813118658"9612096640162 12,000 7 1/218.752501/40.21No
11815519358"9614496768171 16,000 1020.832501/40.21No
14213119370"12012096800180 16,000 1020.002501/40.21No
14213122570"1201201201,000189 20,000 1520.002501/40.21No
14215519470"12014496960189 18,000 1518.752501/40.21No
16415516170"1201441201,200207 24,000 1520.002501/40.21No
14217920670"120168961,120198 22,000 1519.642501/40.21No
14217923270"1201681201,400225 26,000 1518.5750010.42No
14220320770"120192961,280225 24,000 1518.7550010.42No
14220324070"1201921201,600261 30,000 2018.751,0001 1/20.65No
14225121670"120240961,600261 30,000 2018.751,0001 1/20.65No
14225125270"1202401202,000288 40,000 2020.001,0001 1/20.65No
14229922870"120288961,920297 40,000 2020.831,0001 1/20.65No
14229925770"1202881202,400297 40,000 2016.671,0001 1/20.65No
14234722870"120336962,240297 40,000 2017.861,0001 1/20.65No
14234725770"1203361202,800297 50,000 2017.861,0001 1/20.65No

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:

  • Bi-parting swing doors at both ends
  • Vertical lift guillotine door at one or both ends
  • Door windows



Standard ovens include a 12 gauge steel plate floor.

     Standard Options:

  • 12 gauge plate floor with (1) pair inverted angle track
  • 12 gauge plate floor with (1) pair 6” wide wheel guides
  • Insulated (100 p.s.f. max)
  • Insulated with (1) pair inverted angle track
  • Insulated with (1) pair 6” wide wheel guides
  • No floor

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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