Model: EWT06ED – Walk-In Oven

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 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 Workspace Volume (cubic ft.) 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
EWT06ED-48-48-60*
79 60 91 34″ 48 48 60 80 45 2,000 1 1/2 25.00 N/A N/A 0 Yes
EWT06ED-48-48-72*
79 60 103 34″ 48 48 72 96 54 2,500 2 26.04 N/A N/A 0 Yes
EWT06ED-48-48-96*
79 60 132 34″ 48 48 96 128 63 3,500 3 27.34 N/A N/A 0 Yes
EWT06ED-60-60-60*
91 72 96 40″ 60 60 60 125 54 3,500 3 28.00 N/A N/A 0 Yes
EWT06ED-60-60-72*
91 72 114 40″ 60 60 72 150 63 4,000 3 26.67 N/A N/A 0 Yes
EWT06ED-60-60-96
93 72 139 40″ 60 60 96 200 72 5,000 3 25.00 N/A N/A 0 Yes
EWT06ED-72-72-72*
105 84 122 46″ 72 72 72 216 72 5,500 3 25.46 N/A N/A 0 Yes
EWT06ED-72-72-96
109 84 148 46″ 72 72 96 288 81 8,000 5 27.78 N/A N/A 0 No
EWT06ED-72-120-96
113 132 159 46″ 72 120 96 480 108 12,000 7 1/2 25.00 N/A N/A 0 No
EWT06ED-84-84-84
123 96 137 52″ 84 84 84 343 90 9,000 7 1/2 26.24 N/A N/A 0 Yes
EWT06ED-84-96-84
123 108 141 52″ 84 96 84 392 99 10,000 7 1/2 25.51 N/A N/A 0 Yes
EWT06ED-84-120-84
127 132 148 52″ 84 120 84 490 108 14,000 10 28.57 N/A N/A 0 No
EWT06ED-84-120-96
127 132 160 52″ 84 120 96 560 117 14,000 10 25.00 N/A N/A 0 No
EWT06ED-96-96-96
139 108 160 58″ 96 96 96 512 117 14,000 10 27.34 N/A N/A 0 No
EWT06ED-96-120-96
141 132 166 58″ 96 120 96 640 144 16,000 10 25.00 N/A N/A 0 No
EWT06ED-96-144-96
145 156 174 58″ 96 144 96 768 162 20,000 15 26.04 N/A N/A 0 No
EWT06ED-96-168-96
147 180 180 58″ 96 168 96 896 180 24,000 15 26.79 N/A N/A 0 No
EWT06ED-96-192-96
149 204 181 58″ 96 192 96 1,024 189 26,000 15 25.39 N/A N/A 0 No
EWT06ED-96-240-96
151 252 189 58″ 96 240 96 1,280 225 30,000 20 23.44 N/A N/A 0 No
EWT06ED-96-240-120
159 252 140 58″ 96 240 120 1,600 261 40,000 20 25.00 N/A N/A 0 No
EWT06ED-96-288-96
159 300 201 58″ 96 288 96 1,536 261 40,000 20 26.04 N/A N/A 0 No
EWT06ED-96-288-120
169 300 230 58″ 96 288 120 1,920 288 50,000 20 26.04 N/A N/A 0 No
EWT06ED-120-120-96
169 132 174 70″ 120 120 96 800 162 20,000 15 25.00 N/A N/A 0 No
EWT06ED-120-120-120
173 132 205 70″ 120 120 120 1,000 180 26,000 15 26.00 N/A N/A 0 No
EWT06ED-120-144-96
171 156 180 70″ 120 144 96 960 180 24,000 15 25.00 N/A N/A 0 No
EWT06ED-120-144-120
175 156 213 70″ 120 144 120 1,200 207 30,000 20 25.00 N/A N/A 0 No
EWT06ED-120-168-96
173 180 188 70″ 120 168 96 1,120 198 28,000 15 25.00 N/A N/A 0 No
EWT06ED-120-168-120
183 180 225 70″ 120 168 120 1,400 225 40,000 20 28.57 N/A N/A 0 No
EWT06ED-120-192-96
175 204 189 70″ 120 192 96 1,280 225 30,000 20 23.44 N/A N/A 0 No
EWT06ED-120-192-120
183 204 225 70″ 120 192 120 1,600 261 40,000 20 25.00 N/A N/A 0 No
EWT06ED-120-240-96
183 252 201 70″ 120 240 96 1,600 261 40,000 20 25.00 N/A N/A 0 No
EWT06ED-120-240-120
193 252 230 70″ 120 240 120 2,000 288 50,000 20 25.00 N/A N/A 0 No
EWT06ED-120-288-96
193 300 206 70″ 120 288 96 1,920 288 50,000 20 26.04 N/A N/A 0 No
Model (NFPA Class A) Overall Dimensions Door Swing Radius Workspace Dimensions Workspace Volume (cubic ft.) 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
EWT06ED-48-48-60*
79 60 118 34″ 48 48 60 80 54 2,000 1 1/2 25.00 62 1/4 0.04 Yes
EWT06ED-48-48-72*
79 60 130 34″ 48 48 72 96 63 2,500 2 26.04 62 1/4 0.04 Yes
EWT06ED-48-48-96
79 60 159 34″ 48 48 96 128 72 3,500 3 27.34 62 1/4 0.04 No
EWT06ED-60-60-60*
91 72 123 40″ 60 60 60 125 63 3,500 3 28.00 62 1/4 0.04 Yes
EWT06ED-60-60-72*
91 72 141 40″ 60 60 72 150 72 4,000 3 26.67 62 1/4 0.04 Yes
EWT06ED-60-60-96 93 72 166 40″ 60 60 96 200 81 5,000 3 25.00 62 1/4 0.04 No
EWT06ED-72-72-72*
105 84 149 46″ 72 72 72 216 81 5,500 3 25.46 62 1/4 0.04 No
EWT06ED-72-72-96 109 84 175 46″ 72 72 96 288 90 8,000 5 27.78 62 1/4 0.04 No
EWT06ED-72-120-96
113 132 186 46″ 72 120 96 480 153 12,000 7 1/2 25.00 100 1/4 0.07 No
EWT06ED-84-84-84 123 96 164 52″ 84 84 84 343 117 9,000 7 1/2 26.24 100 1/4 0.07 No
EWT06ED-84-96-84 123 108 168 52″ 84 96 84 392 117 10,000 7 1/2 25.51 100 1/4 0.07 No
EWT06ED-84-120-84
127 132 175 52″ 84 120 84 490 180 14,000 10 28.57 250 1/4 0.18 No
EWT06ED-84-120-96
127 132 187 52″ 84 120 96 560 180 14,000 10 25.00 250 1/4 0.18 No
EWT06ED-96-96-96 139 108 187 58″ 96 96 96 512 180 14,000 10 27.34 250 1/4 0.18 No
EWT06ED-96-120-96
141 132 193 58″ 96 120 96 640 189 16,000 10 25.00 250 1/4 0.18 No
EWT06ED-96-144-96
145 156 201 58″ 96 144 96 768 207 20,000 15 26.04 250 1/4 0.18 No
EWT06ED-120-120-96
169 132 201 70″ 120 120 96 800 207 20,000 15 25.00 250 1/4 0.18 No
EWT06ED-120-120-120
173 132 232 70″ 120 120 120 1,000 234 26,000 15 26.00 250 1/4 0.18 No
EWT06ED-120-144-96
171 156 207 70″ 120 144 96 960 225 24,000 15 25.00 250 1/4 0.18 No
EWT06ED-120-144-120
175 156 163 70″ 120 144 120 1,200 261 30,000 20 25.00 250 1/4 0.18 No
EWT06ED-120-168-96
173 180 215 70″ 120 168 96 1,120 261 28,000 15 25.00 250 1/4 0.18 No
EWT06ED-120-192-96
175 204 215 70″ 120 192 96 1,280 288 30,000 20 23.44 500 1 0.37 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:

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

Flooring

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

Industry Standards