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EWR05ED - 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 EWR series features a rear mounted heater box, which is ideal for installations with height restrictions. 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 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 DimensionsHeater Bank
Circulating Fan
Air Changes per MinuteExhaust Fan Capacity (CFM)Exhaust Motor (HP)Solvents per Batch
Ships Fully Assembled
791067224"48486045 1,700 121.25N/AN/A0Yes
811068424"48487245 2,000 1 1/220.83N/AN/A0Yes
8310610824"48489654 2,500 219.53N/AN/A0Yes
831348424"48727254 3,000 220.83N/AN/A0Yes
8514010824"48729663 4,000 320.83N/AN/A0Yes
EWR05ED-48-96-72851648424"48967263 4,000 320.83N/AN/A0Yes
EWR05ED-48-96-968916810824"48969672 5,000 319.53N/AN/A0Yes
951187230"60606045 2,500 220.00N/AN/A0Yes
EWR05ED-60-60-72951228430"60607254 3,000 220.00N/AN/A0Yes
EWR05ED-60-60-969712810830"60609663 4,000 320.00N/AN/A0Yes
EWR05ED-60-72-72971348430"60727254 3,500 319.44N/AN/A0Yes
EWR05ED-60-72-969914410830"60729663 4,500 318.75N/AN/A0Yes
EWR05ED-60-96-9610317410830"60969672 6,000 318.75N/AN/A0Yes
1091408436"72727263 4,000 318.52N/AN/A0Yes
EWR05ED-72-72-9611315010836"72729672 5,500 319.10N/AN/A0Yes
EWR05ED-72-96-9612117410836"72969681 8,000 520.83N/AN/A0Yes
12519810836"721209690 9,000 7 1/218.75N/AN/A0Yes
EWR05ED-84-84-841291629642"84848472 7,000 520.41N/AN/A0Yes
EWR05ED-84-96-841331749642"84968481 8,000 520.41N/AN/A0Yes
1372059642"841208490 10,000 7 1/220.41N/AN/A0Yes
14121010842"841209699 12,000 7 1/221.43N/AN/A0Yes
EWR05ED-96-96-9614918110848"96969690 10,000 7 1/219.53N/AN/A0Yes
15321010848"9612096108 12,000 7 1/218.75N/AN/A0Yes
16124310848"9614496117 16,000 1020.83N/AN/A0Yes
16726710848"9616896144 18,000 1520.09N/AN/A0Yes
18521910860"12012096117 16,000 1020.00N/AN/A0Yes
19322413260"120120120153 20,000 1520.00N/AN/A0Yes
19124310860"12014496153 18,000 1518.75N/AN/A0Yes
19721813260"120144120162 24,000 1520.00N/AN/A0Yes
19324210860"12016896162 22,000 1519.64N/AN/A0Yes
20324213260"120168120180 26,000 1518.57N/AN/A0Yes
Model (NFPA Class A)Overall DimensionsDoor Swing RadiusWorkspace DimensionsHeater Bank
Circulating Fan
Air Changes per MinuteExhaust Fan Capacity (CFM)Exhaust Motor (HP)Solvents per Batch
Ships Fully Assembled
7910612324"48486054 1,700 121.25621/40.05Yes
8110613524"48487254 2,000 1 1/220.83621/40.05Yes
8310615924"48489663 2,500 219.53621/40.05No
8313413524"48727263 3,000 220.83621/40.05Yes
8514015924"48729663 4,000 320.83621/40.05No
EWR05ED-48-96-728516413524"48967263 4,000 320.83621/40.05Yes
EWR05ED-48-96-968916815924"48969672 5,000 319.53621/40.05No
9511812330"60606054 2,500 220.00621/40.05Yes
EWR05ED-60-60-729512213530"60607263 3,000 220.00621/40.05Yes
EWR05ED-60-60-969712815930"60609672 4,000 320.00621/40.05No
EWR05ED-60-72-729713413530"60727263 3,500 319.44621/40.05Yes
EWR05ED-60-72-969914415930"60729672 4,500 318.75621/40.05No
EWR05ED-60-96-9610317415930"60969690 6,000 318.751001/40.08No
10914013536"72727272 4,000 318.52621/40.05Yes
EWR05ED-72-72-9611315015936"72729681 5,500 319.10621/40.05No
EWR05ED-72-96-9612117415936"72969699 8,000 520.831001/40.08No
12519815936"7212096108 9,000 7 1/218.751001/40.08No
EWR05ED-84-84-8412916214742"84848499 7,000 520.411001/40.08No
EWR05ED-84-96-8413317414742"84968499 8,000 520.411001/40.08No
13720514742"8412084153 10,000 7 1/220.412501/40.21No
14121015942"8412096153 12,000 7 1/221.432501/40.21No
EWR05ED-96-96-9614918115948"969696153 10,000 7 1/219.532501/40.21No
15321015948"9612096162 12,000 7 1/218.752501/40.21No
16124315948"9614496171 16,000 1020.832501/40.21No
16726715948"9616896189 18,000 1520.092501/40.21No
18521915960"12012096180 16,000 1020.002501/40.21No
19322418360"120120120189 20,000 1520.002501/40.21No
19124315960"12014496189 18,000 1518.752501/40.21No
19721818360"120144120207 24,000 1520.002501/40.21No
19324215960"12016896198 22,000 1519.642501/40.21No
20324218360"120168120225 26,000 1518.5750010.42No

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 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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