Model: EWR05ED – Walk-In Oven

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 Pattern

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:

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.

PLC
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 Dimensions Door Swing Radius Workspace Dimensions Heater Bank
(kW)
Circulating Fan
(CFM)
Motor
(HP)
Air Changes per Minute Exhaust Fan Capacity (CFM) Exhaust Motor (HP) Solvents per Batch
(Gals.)
Ships Fully Assembled
“W “D “H “W “D “H
EWR05ED-48-48-60
79 106 72 24″ 48 48 60 45 1,700 1 21.25 N/A N/A 0 Yes
EWR05ED-48-48-72
81 106 84 24″ 48 48 72 45 2,000 1 1/2 20.83 N/A N/A 0 Yes
EWR05ED-48-48-96
83 106 108 24″ 48 48 96 54 2,500 2 19.53 N/A N/A 0 Yes
EWR05ED-48-72-72
83 134 84 24″ 48 72 72 54 3,000 2 20.83 N/A N/A 0 Yes
EWR05ED-48-72-96
85 140 108 24″ 48 72 96 63 4,000 3 20.83 N/A N/A 0 Yes
EWR05ED-48-96-72 85 164 84 24″ 48 96 72 63 4,000 3 20.83 N/A N/A 0 Yes
EWR05ED-48-96-96 89 168 108 24″ 48 96 96 72 5,000 3 19.53 N/A N/A 0 Yes
EWR05ED-60-60-60
95 118 72 30″ 60 60 60 45 2,500 2 20.00 N/A N/A 0 Yes
EWR05ED-60-60-72 95 122 84 30″ 60 60 72 54 3,000 2 20.00 N/A N/A 0 Yes
EWR05ED-60-60-96 97 128 108 30″ 60 60 96 63 4,000 3 20.00 N/A N/A 0 Yes
EWR05ED-60-72-72 97 134 84 30″ 60 72 72 54 3,500 3 19.44 N/A N/A 0 Yes
EWR05ED-60-72-96 99 144 108 30″ 60 72 96 63 4,500 3 18.75 N/A N/A 0 Yes
EWR05ED-60-96-96 103 174 108 30″ 60 96 96 72 6,000 3 18.75 N/A N/A 0 Yes
EWR05ED-72-72-72
109 140 84 36″ 72 72 72 63 4,000 3 18.52 N/A N/A 0 Yes
EWR05ED-72-72-96 113 150 108 36″ 72 72 96 72 5,500 3 19.10 N/A N/A 0 Yes
EWR05ED-72-96-96 121 174 108 36″ 72 96 96 81 8,000 5 20.83 N/A N/A 0 Yes
EWR05ED-72-120-96
125 198 108 36″ 72 120 96 90 9,000 7 1/2 18.75 N/A N/A 0 Yes
EWR05ED-84-84-84 129 162 96 42″ 84 84 84 72 7,000 5 20.41 N/A N/A 0 Yes
EWR05ED-84-96-84 133 174 96 42″ 84 96 84 81 8,000 5 20.41 N/A N/A 0 Yes
EWR05ED-84-120-84
137 205 96 42″ 84 120 84 90 10,000 7 1/2 20.41 N/A N/A 0 Yes
EWR05ED-84-120-96
141 210 108 42″ 84 120 96 99 12,000 7 1/2 21.43 N/A N/A 0 Yes
EWR05ED-96-96-96 149 181 108 48″ 96 96 96 90 10,000 7 1/2 19.53 N/A N/A 0 Yes
EWR05ED-96-120-96
153 210 108 48″ 96 120 96 108 12,000 7 1/2 18.75 N/A N/A 0 Yes
EWR05ED-96-144-96
161 243 108 48″ 96 144 96 117 16,000 10 20.83 N/A N/A 0 Yes
EWR05ED-96-168-96
167 267 108 48″ 96 168 96 144 18,000 15 20.09 N/A N/A 0 Yes
EWR05ED-120-120-96
185 219 108 60″ 120 120 96 117 16,000 10 20.00 N/A N/A 0 Yes
EWR05ED-120-120-120
193 224 132 60″ 120 120 120 153 20,000 15 20.00 N/A N/A 0 Yes
EWR05ED-120-144-96
191 243 108 60″ 120 144 96 153 18,000 15 18.75 N/A N/A 0 Yes
EWR05ED-120-144-120
197 218 132 60″ 120 144 120 162 24,000 15 20.00 N/A N/A 0 Yes
EWR05ED-120-168-96
193 242 108 60″ 120 168 96 162 22,000 15 19.64 N/A N/A 0 Yes
EWR05ED-120-168-120
203 242 132 60″ 120 168 120 180 26,000 15 18.57 N/A N/A 0 Yes
Model (NFPA Class A) Overall Dimensions Door Swing Radius Workspace Dimensions Heater Bank
(kW)
Circulating Fan
(CFM)
Motor
(HP)
Air Changes per Minute Exhaust Fan Capacity (CFM) Exhaust Motor (HP) Solvents per Batch
(Gals.)
Ships Fully Assembled
“W “D “H “W “D “H
EWR05ED-48-48-60
79 106 123 24″ 48 48 60 54 1,700 1 21.25 62 1/4 0.05 Yes
EWR05ED-48-48-72
81 106 135 24″ 48 48 72 54 2,000 1 1/2 20.83 62 1/4 0.05 Yes
EWR05ED-48-48-96
83 106 159 24″ 48 48 96 63 2,500 2 19.53 62 1/4 0.05 No
EWR05ED-48-72-72
83 134 135 24″ 48 72 72 63 3,000 2 20.83 62 1/4 0.05 Yes
EWR05ED-48-72-96
85 140 159 24″ 48 72 96 63 4,000 3 20.83 62 1/4 0.05 No
EWR05ED-48-96-72 85 164 135 24″ 48 96 72 63 4,000 3 20.83 62 1/4 0.05 Yes
EWR05ED-48-96-96 89 168 159 24″ 48 96 96 72 5,000 3 19.53 62 1/4 0.05 No
EWR05ED-60-60-60
95 118 123 30″ 60 60 60 54 2,500 2 20.00 62 1/4 0.05 Yes
EWR05ED-60-60-72 95 122 135 30″ 60 60 72 63 3,000 2 20.00 62 1/4 0.05 Yes
EWR05ED-60-60-96 97 128 159 30″ 60 60 96 72 4,000 3 20.00 62 1/4 0.05 No
EWR05ED-60-72-72 97 134 135 30″ 60 72 72 63 3,500 3 19.44 62 1/4 0.05 Yes
EWR05ED-60-72-96 99 144 159 30″ 60 72 96 72 4,500 3 18.75 62 1/4 0.05 No
EWR05ED-60-96-96 103 174 159 30″ 60 96 96 90 6,000 3 18.75 100 1/4 0.08 No
EWR05ED-72-72-72
109 140 135 36″ 72 72 72 72 4,000 3 18.52 62 1/4 0.05 Yes
EWR05ED-72-72-96 113 150 159 36″ 72 72 96 81 5,500 3 19.10 62 1/4 0.05 No
EWR05ED-72-96-96 121 174 159 36″ 72 96 96 99 8,000 5 20.83 100 1/4 0.08 No
EWR05ED-72-120-96
125 198 159 36″ 72 120 96 108 9,000 7 1/2 18.75 100 1/4 0.08 No
EWR05ED-84-84-84 129 162 147 42″ 84 84 84 99 7,000 5 20.41 100 1/4 0.08 No
EWR05ED-84-96-84 133 174 147 42″ 84 96 84 99 8,000 5 20.41 100 1/4 0.08 No
EWR05ED-84-120-84
137 205 147 42″ 84 120 84 153 10,000 7 1/2 20.41 250 1/4 0.21 No
EWR05ED-84-120-96
141 210 159 42″ 84 120 96 153 12,000 7 1/2 21.43 250 1/4 0.21 No
EWR05ED-96-96-96 149 181 159 48″ 96 96 96 153 10,000 7 1/2 19.53 250 1/4 0.21 No
EWR05ED-96-120-96
153 210 159 48″ 96 120 96 162 12,000 7 1/2 18.75 250 1/4 0.21 No
EWR05ED-96-144-96
161 243 159 48″ 96 144 96 171 16,000 10 20.83 250 1/4 0.21 No
EWR05ED-96-168-96
167 267 159 48″ 96 168 96 189 18,000 15 20.09 250 1/4 0.21 No
EWR05ED-120-120-96
185 219 159 60″ 120 120 96 180 16,000 10 20.00 250 1/4 0.21 No
EWR05ED-120-120-120
193 224 183 60″ 120 120 120 189 20,000 15 20.00 250 1/4 0.21 No
EWR05ED-120-144-96
191 243 159 60″ 120 144 96 189 18,000 15 18.75 250 1/4 0.21 No
EWR05ED-120-144-120
197 218 183 60″ 120 144 120 207 24,000 15 20.00 250 1/4 0.21 No
EWR05ED-120-168-96
193 242 159 60″ 120 168 96 198 22,000 15 19.64 250 1/4 0.21 No
EWR05ED-120-168-120
203 242 183 60″ 120 168 120 225 26,000 15 18.57 500 1 0.42 No

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.

Doors

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.

     Standard Options:

  • Vertical lift guillotine door
  • Door windows

Flooring

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 maximum solvent loading.
  • Explosion relief of adequate area determined by oven or furnace workspace volume.

Industry Standards