Model: EWT03FD – Walk-In Oven

DATA SHEET OWNER'S MANUAL REQUEST A QUOTE

Operating Temperature 

200°F (93°C) to 350°F (177°C)

Heating Medium

Direct fired natural gas modulating burner with direct coupled, digital actuated control valve. High turndown ratio allows for rapid heat-up and tight temperature controls.

  • Low CO and NOX emissions
  • F.M. compliant fuel train

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.) Burner (BTU/ Hr) 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
EWT03FD-48-48-60
 74 59 116 34″ 48 48 60 80 200,000 1,700 1 21.50 100 1/4 0 Yes
EWT03FD-48-48-72
 76 59 129 34″ 48 48 72 96 200,000 2,000 1 20.83 100 1/4 0 Yes
EWT03FD-48-48-96
 76 59 153 34″ 48 48 96 128 200,000 2,500 2 19.53 100 1/4 0 No
EWT03FD-60-60-60
 88 71 117 40″ 60 60 60 125 200,000 2,500 2 20.00 100 1/4 0 Yes
EWT03FD-60-60-72
 88 71 134 40″ 60 60 72 150 200,000 3,000 2 20.00 100 1/4 0 Yes
EWT03FD-60-60-96
 90 71 165 40″ 60 60 96 200 200,000 4,000 3 20.00 100 1/4 0 No
EWT03FD-72-72-72
 102 83 141 46″ 72 72 72 216 200,000 4,000 3 18.52 100 1/4 0 Yes
EWT03FD-72-72-96
 104 83 173 46″ 72 72 96 288 200,000 5,500 3 19.10 100 1/4 0 No
EWT03FD-72-120-96
 110 131 176 46″ 72 120 96 480 200,000 9,000 7 1/2 18.75 100 1/4 0 No
EWT03FD-84-84-84 118 95 162 52″ 84 84 84 343 200,000 7,000 5 20.41 100 1/4 0 No
EWT03FD-84-96-84 120 107 163 52″ 84 96 84 392 200,000 8,000 5 20.41 100 1/4 0 No
EWT03FD-84-120-84
 122 131 168 52″ 84 120 84 490 400,000 10,000 7 1/2 20.41 250 1/4 0 No
EWT03FD-84-120-96
 124 131 186 52″ 84 120 96 560 400,000 12,000 7 1/2 20.43 250 1/4 0 No
EWT03FD-96-96-96 134 107 180 58″ 96 96 96 512 400,000 10,000 7 1/2 19.53 250 1/4 0 No
EWT03FD-96-120-96
 136 131 186 58″ 96 120 96 640 400,000 12,000 7 1/2 18.75 250 1/4 0 No
EWT03FD-96-144-96
 140 155 193 58″ 96 144 96 768 400,000 16,000 10 20.83 250 1/4 0 No
EWT03FD-96-168-96
 142 179 194 58″ 96 168 96 896 400,000 18,000 15 20.10 250 1/4 0 No
EWT03FD-96-192-96
 144 203 201 58″ 96 192 96 1,024 400,000 20,000 15 19.53 250 1/4 0 No
EWT03FD-96-240-96
 146 251 207 58″ 96 240 96 1,280 700,000 24,000 15 18.75 500 1 0 No
EWT03FD-96-240-120
 150 251 163 58″ 96 240 120 1,600 700,000 30,000 20 18.75 500 1 0 No
EWT03FD-96-288-96
 150 299 216 58″ 96 288 96 1,536 700,000 30,000 20 19.53 500 1 0 No
EWT03FD-96-288-120
 158 299 252 58″ 96 288 120 1,920 700,000 40,000 20 20.83 500 1 0 No
EWT03FD-96-336-96
 158 347 228 58″ 96 336 96 1,792 700,000 40,000 20 22.32 500 1 0 No
EWT03FD-96-336-120
 158 347 252 58″ 96 336 120 2,240 700,000 40,000 20 17.86 500 1 0 No
EWT03FD-120-120-96
 164 131 193 70″ 120 120 96 800 400,000 16,000 10 20.00 250 1/4 0 No
EWT03FD-120-120-120
 168 131 225 70″ 120 120 120 1,000 400,000 20,000 15 20.00 250 1/4 0 No
EWT03FD-120-144-96
 166 155 194 70″ 120 144 96 960 400,000 18,000 15 18.75 250 1/4 0 No
EWT03FD-120-144-120
 170 155 231 70″ 120 144 120 1,200 400,000 24,000 15 20.00 250 1/4 0 No
EWT03FD-120-168-96
 168 179 206 70″ 120 168 96 1,120 400,000 22,000 15 19.64 250 1/4 0 No
EWT03FD-120-168-120
 172 179 232 70″ 120 168 120 1,400 700,000 26,000 15 18.57 500 1 0 No
EWT03FD-120-192-96
 170 203 207 70″ 120 192 96 1,280 700,000 24,000 15 18.75 500 1 0 No
EWT03FD-120-192-120
 174 203 240 70″ 120 192 120 1,600 700,000 30,000 20 18.75 500 1 0 No
EWT03FD-120-240-96
 174 251 216 70″ 120 240 96 1,600 700,000 30,000 20 18.75 500 1 0 No
EWT03FD-120-240-120
 182 251 252 70″ 120 240 120 2,000 700,000 40,000 20 20.00 500 1 0 No
EWT03FD-120-288-96
 182 299 228 70″ 120 288 96 1,920 700,000 40,000 20 20.83 500 1 0 No
EWT03FD-120-288-120
 188 299 264 70″ 120 288 120 1,400 700,000 50,000 20 20.83 500 1 0 No
EWT03FD-120-336-96
 182 347 228 70″ 120 336 96 2,240 700,000 40,000 20 17.86 500 1 0 No
EWT03FD-120-336-120
 188 347 264 70″ 120 336 120 2,800 1,000,000 50,000 20 17.86 500 1 0 No
Model (NFPA Class A) Overall Dimensions Door Swing Radius Workspace Dimensions Workspace Volume (cubic ft.) Burner (BTU/ Hr) 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
EWT03FD-48-48-60
 74 59 116 34″ 48 48 60 80 200,000 1,700 1 21.50 250 1/4 0.06 Yes
EWT03FD-48-48-72
 76 59 129 34″ 48 48 72 96 200,000 2,000 1 20.83 250 1/4 0.06 Yes
EWT03FD-48-48-96
 76 59 153 34″ 48 48 96 128 200,000 2,500 2 19.53 250 1/4 0.06 No
EWT03FD-60-60-60
 88 71 117 40″ 60 60 60 125 200,000 2,500 2 20.00 250 1/4 0.06 Yes
EWT03FD-60-60-72
 88 71 134 40″ 60 60 72 150 200,000 3,000 2 20.00 250 1/4 0.06 Yes
EWT03FD-60-60-96
 90 71 165 40″ 60 60 96 200 200,000 4,000 3 20.00 250 1/4 0.06 No
EWT03FD-72-72-72
 102 83 141 46″ 72 72 72 216 200,000 4,000 3 18.52 250 1/4 0.06 Yes
EWT03FD-72-72-96
 104 83 173 46″ 72 72 96 288 200,000 5,500 3 19.10 250 1/4 0.06 No
EWT03FD-72-120-96
 110 131 176 46″ 72 120 96 480 200,000 9,000 7 1/2 18.75 250 1/4 0.10 No
EWT03FD-84-84-84 118 95 162 52″ 84 84 84 343 200,000 7,000 5 20.41 250 1/4 0.10 No
EWT03FD-84-96-84 120 107 163 52″ 84 96 84 392 200,000 8,000 5 20.41 250 1/4 0.10 No
EWT03FD-84-120-84
 122 131 168 52″ 84 120 84 490 400,000 10,000 7 1/2 20.41 500 1 0.25 No
EWT03FD-84-120-96
 124 131 186 52″ 84 120 96 560 400,000 12,000 7 1/2 20.43 500 1 0.25 No
EWT03FD-96-96-96 134 107 180 58″ 96 96 96 512 400,000 10,000 7 1/2 19.53 500 1 0.25 No
EWT03FD-96-120-96
 136 131 186 58″ 96 120 96 640 400,000 12,000 7 1/2 18.75 500 1 0.25 No
EWT03FD-96-144-96
 140 155 193 58″ 96 144 96 768 400,000 16,000 10 20.83 500 1 0.25 No
EWT03FD-120-120-96
 164 131 193 70″ 120 120 96 800 400,000 16,000 10 20.00 500 1 0.25 No
EWT03FD-120-120-120
 168 131 225 70″ 120 120 120 1,000 400,000 20,000 15 20.00 500 1 0.25 No
EWT03FD-120-144-96
 166 155 194 70″ 120 144 96 960 400,000 18,000 15 18.75 500 1 0.25 No
EWT03FD-120-144-120
 170 155 161 70″ 120 144 120 1,200 400,000 24,000 15 20.00 500 1 0.25 No
EWT03FD-120-168-96
 168 179 206 70″ 120 168 96 1,120 400,000 22,000 15 19.64 500 1 0.25 No
EWT03FD-120-168-120
 172 179 232 70″ 120 168 120 1,400 700,000 26,000 15 18.57 1,000 1 1/2 0.51 No
EWT03FD-120-192-96
 170 203 207 70″ 120 192 96 1,280 700,000 24,000 15 18.75 1,000 1 1/2 0.51 No
EWT03FD-120-192-120
 174 203 240 70″ 120 192 120 1,600 700,000 30,000 20 18.75 1,000 2 0.51 No
EWT03FD-120-240-96
 174 251 216 70″ 120 240 96 1,600 700,000 30,000 20 18.75 1,000 2 0.51 No
EWT03FD-120-240-120
 182 251 252 70″ 120 240 120 2,000 700,000 40,000 20 20.00 1,000 2 0.77 No
EWT03FD-120-288-96
 182 299 228 70″ 120 288 96 1,920 700,000 40,000 20 20.83 1,000 2 0.77 No
EWT03FD-120-288-120
 188 299 264 70″ 120 288 120 2,400 700,000 50,000 20 20.83 1,000 2 0.77 No
EWT03FD-120-336-96
 182 347 228 70″ 120 336 96 2,240 700,000 50,000 20 17.86 1,000 2 0.77 No
EWT03FD-120-336-120
 188 347 264 70″ 120 336 120 2,800 1,000,000 50,000 20 17.86 1,500 2 0.77 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 burner size and solvent load present.
  • Explosion relief of adequate area determined by oven or furnace workspace volume.

 

Industry Standards