Model: EWT05ED – Walk-In Oven

DATA SHEET OWNER'S MANUAL REQUEST A QUOTE

Operating Temperature 

150°F (66°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 in our own UL508A certified panel shop. Independent third party inspections 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
EWT05ED-48-48-60
 70 59 89 34″ 48 48 60 80 45 1,700 1 21.25 N/A N/A 0 Yes
EWT05ED-48-48-72 70 59 102 34″ 48 48 72 96 45 2,000 1 1/2 20.83 N/A N/A 0 Yes
EWT05ED-48-48-96
 70 59 126 34″ 48 48 96 128 54 2,500 2 19.53 N/A N/A 0 Yes
EWT05ED-60-60-60 82 71 90 40″ 60 60 60 125 45 2,500 2 20.00 N/A N/A 0 Yes
EWT05ED-60-60-72 82 71 107 40″ 60 60 72 150 54 3,000 2 20.00 N/A N/A 0 Yes
EWT05ED-60-60-96 82 71 138 40″ 60 60 96 200 63 4,000 3 20.00 N/A N/A 0 Yes
EWT05ED-72-72-72 94 83 114 46″ 72 72 72 216 63 4,000 3 18.52 N/A N/A 0 Yes
EWT05ED-72-72-96 94 83 146 46″ 72 72 96 288 72 5,500 3 19.10 N/A N/A 0 No
EWT05ED-72-120-96
 94 131 149 46″ 72 120 96 480 90 9,000 7 1/2 18.75 N/A N/A 0 Yes
EWT05ED-84-84-84 106 95 135 52″ 84 84 84 343 72 7,000 5 20.41 N/A N/A 0 Yes
EWT05ED-84-96-84 106 107 136 52″ 84 96 84 392 81 8,000 5 20.41 N/A N/A 0 Yes
EWT05ED-84-120-84
 106 131 141 52″ 84 120 84 490 90 10,000 7 1/2 20.41 N/A N/A 0 Yes
EWT05ED-84-120-96
 106 131 159 52″ 84 120 96 560 99 12,000 7 1/2 21.43 N/A N/A 0 No
EWT05ED-96-96-96 118 107 153 58″ 96 96 96 512 90 10,000 7 1/2 19.53 N/A N/A 0 No
EWT05ED-96-120-96
 118 131 159 58″ 96 120 96 640 108 12,000 7 1/2 18.75 N/A N/A 0 No
EWT05ED-96-144-96
 118 155 166 58″ 96 144 96 768 117 16,000 10 20.83 N/A N/A 0 No
EWT05ED-96-168-96
 118 179 167 58″ 96 168 96 896 144 18,000 15 20.10 N/A N/A 0 No
EWT05ED-96-192-96
 118 203 174 58″ 96 192 96 1,024 153 20,000 15 19.53 N/A N/A 0 No
EWT05ED-96-240-96
 118 251 180 58″ 96 240 96 1,280 180 24,000 15 18.75 N/A N/A 0 No
EWT05ED-96-240-120
 812 251 136 58″ 96 240 120 1,600 198 30,000 20 18.75 N/A N/A 0 No
EWT05ED-96-288-96
 118 299 189 58″ 96 288 96 1,536 207 30,000 20 19.53 N/A N/A 0 No
EWT05ED-96-288-120
 118 299 225 58″ 96 288 120 1,920 225 40,000 20 20.83 N/A N/A 0 No
EWT05ED-96-336-96
 118 347 201 58″ 96 336 96 1,792 225 40,000 20 22.32 N/A N/A 0 No
EWT05ED-96-336-120
 118 347 225 58″ 96 336 120 2,240 261 40,000 20 17.86 N/A N/A 0 No
EWT05ED-120-120-96
 142 131 166 70″ 120 120 96 800 117 16,000 10 20.00 N/A N/A 0 No
EWT05ED-120-120-120
 142 131 198 70″ 120 120 120 1,000 153 20,000 15 20.00 N/A N/A 0 No
EWT05ED-120-144-96
 142 155 167 70″ 120 144 96 960 153 18,000 15 18.75 N/A N/A 0 No
EWT05ED-120-144-120
 142 155 204 70″ 120 144 120 1,200 162 24,000 15 20.00 N/A N/A 0 No
EWT05ED-120-168-96
 142 179 179 70″ 120 168 96 1,120 162 22,000 15 19.64 N/A N/A 0 No
EWT05ED-120-168-120
 142 179 205 70″ 120 168 120 1,400 180 26,000 15 18.57 N/A N/A 0 No
EWT05ED-120-192-96
 142 203 180 70″ 120 192 96 1,280 171 24,000 15 18.75 N/A N/A 0 No
EWT05ED-120-192-120
 142 203 213 70″ 120 192 120 1,600 198 30,000 20 18.75 N/A N/A 0 No
EWT05ED-120-240-96
 142 251 189 70″ 120 240 96 1,600 198 30,000 20 18.75 N/A N/A 0 No
EWT05ED-120-240-120
 142 251 225 70″ 120 240 120 2,000 225 40,000 20 20.00 N/A N/A 0 No
EWT05ED-120-288-96
 142 299 201 70″ 120 288 96 1,920 225 40,000 20 20.83 N/A N/A 0 No
EWT05ED-120-288-120
 142 299 230 70″ 120 288 120 2,400 261 50,000 20 20.83 N/A N/A 0 No
EWT05ED-120-336-96
 142 347 201 70″ 120 336 96 2,240 261 40,000 20 17.86 N/A N/A 0 No
EWT05ED-120-336-120
 142 347 230 70″ 120 336 120 2,800 288 50,000 20 17.86 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
EWT05ED-48-48-60
 70 59 116 34″ 48 48 60 80 54 1,700 1 21.25 62 1/4 0.05 Yes
EWT05ED-48-48-72
 70 59 129 34″ 48 48 72 96 54 2,000 1 1/2 20.83 62 1/4 0.05 Yes
EWT05ED-48-48-96
 70 59 153 34″ 48 48 96 128 63 2,500 2 19.53 62 1/4 0.05 No
EWT05ED-60-60-60
 82 71 117 40″ 60 60 60 125 54 2,500 2 20.00 62 1/4 0.05 Yes
EWT05ED-60-60-72 82 71 134 40″ 60 60 72 150 63 3,000 2 20.00 62 1/4 0.05 Yes
EWT05ED-60-60-96 82 71 165 40″ 60 60 96 200 72 4,000 3 20.00 62 1/4 0.05 No
EWT05ED-72-72-72
 94 83 141 46″ 72 72 72 216 72 4,000 3 18.52 62 1/4 0.05 Yes
EWT05ED-72-72-96 94 83 173 46″ 72 72 96 288 81 5,500 3 19.10 62 1/4 0.05 No
EWT05ED-72-120-96
 94 131 176 46″ 72 120 96 480 108 9,000 7 1/2 18.75 100 1/4 0.08 No
EWT05ED-84-84-84 106 95 162 52″ 84 84 84 343 99 7,000 5 20.41 100 1/4 0.08 No
EWT05ED-84-96-84 106 107 163 52″ 84 96 84 392 99 8,000 5 20.41 100 1/4 0.08 No
EWT05ED-84-120-84
 106 131 168 52″ 84 120 84 490 153 10,000 7 1/2 20.41 250 1/4 0.21 No
EWT05ED-84-120-96
 106 131 186 52″ 84 120 96 560 153 12,000 7 1/2 21.43 250 1/4 0.21 No
EWT05ED-96-96-96 118 107 180 58″ 96 96 96 512 153 10,000 7 1/2 19.53 250 1/4 0.21 No
EWT05ED-96-120-96
 118 131 186 58″ 96 120 96 640 162 12,000 7 1/2 18.75 250 1/4 0.21 No
EWT05ED-96-144-96
 118 155 193 58″ 96 144 96 768 171 16,000 10 20.83 250 1/4 0.21 No
EWT05ED-120-120-96
 142 131 193 70″ 120 120 96 800 180 16,000 10 20.00 250 1/4 0.21 No
EWT05ED-120-120-120
 142 131 225 70″ 120 120 120 1,000 189 20,000 15 20.00 250 1/4 0.21 No
EWT05ED-120-144-96
 142 155 194 70″ 120 144 96 960 189 18,000 15 18.75 250 1/4 0.21 No
EWT05ED-120-144-120
 164 155 161 70″ 120 144 120 1,200 207 24,000 15 20.00 250 1/4 0.21 No
EWT05ED-120-168-96
 142 179 206 70″ 120 168 96 1,120 198 22,000 15 19.64 250 1/4 0.21 No
EWT05ED-120-168-120
 142 179 232 70″ 120 168 120 1,400 225 26,000 15 18.57 500 1 0.42 No
EWT05ED-120-192-96
 142 203 207 70″ 120 192 96 1,280 225 24,000 15 18.75 500 1 0.42 No
EWT05ED-120-192-120
 142 203 240 70″ 120 192 120 1,600 261 30,000 20 18.75 1,000 1 1/2 0.65 No
EWT05ED-120-240-96
 142 251 216 70″ 120 240 96 1,600 261 30,000 20 18.75 1,000 1 1/2 0.65 No
EWT05ED-120-240-120
 142 251 252 70″ 120 240 120 2,000 288 40,000 20 20.00 1,000 1 1/2 0.65 No
EWT05ED-120-288-96
 142 299 228 70″ 120 288 96 1,920 297 40,000 20 20.83 1,000 1 1/2 0.65 No
EWT05ED-120-288-120
 142 299 257 70″ 120 288 120 2,400 297 40,000 20 16.67 1,000 1 1/2 0.65 No
EWT05ED-120-336-96
 142 347 228 70″ 120 336 96 2,240 297 40,000 20 17.86 1,000 1 1/2 0.65 No
EWT05ED-120-336-120
 142 347 257 70″ 120 336 120 2,800 297 50,000 20 17.86 1,000 1 1/2 0.65 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 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