Model: SWR03ED – Walk-In Oven

Operating Temperature 

200°F (93°C) to 350°F (177°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
SWR03ED-48-48-60
77 106 72 24″ 48 48 60 80 36 1,000 1 12.50 N/A N/A 0 Yes
SWR03ED-48-48-72
77 106 84 24″ 48 48 72 96 36 1,400 1 14.58 N/A N/A 0 Yes
SWR03ED-48-48-96
79 106 108 24″ 48 48 96 128 36 1,700 1 13.28 N/A N/A 0 Yes
SWR03ED-48-72-72
79 130 84 24″ 48 72 72 144 36 1,700 1 11.81 N/A N/A 0 Yes
SWR03ED-48-72-96
83 130 108 24″ 48 72 96 192 36 2,500 2 13.02 N/A N/A 0 Yes
SWR03ED-48-96-72 83 154 84 24″ 48 96 72 192 36 2,500 2 13.02 N/A N/A 0 Yes
SWR03ED-48-96-96 83 158 108 24″ 48 96 96 256 45 3,000 2 11.72 N/A N/A 0 Yes
SWR03ED-60-60-60
89 118 72 30″ 60 60 60 125 36 1,400 1 11.20 N/A N/A 0 Yes
SWR03ED-60-60-72 91 118 84 30″ 60 60 72 150 36 1,700 1 11.33 N/A N/A 0 Yes
SWR03ED-60-60-96 95 118 108 30″ 60 60 96 200 36 2,500 2 12.50 N/A N/A 0 Yes
SWR03ED-60-72-72 95 130 84 30″ 60 72 72 180 36 2,500 2 13.88 N/A N/A 0 Yes
SWR03ED-60-72-96 95 134 108 30″ 60 72 96 240 45 3,000 2 12.50 N/A N/A 0 Yes
SWR03ED-60-96-96 97 164 108 30″ 60 96 96 320 45 4,000 3 12.50 N/A N/A 0 Yes
SWR03ED-72-72-72
107 130 84 36″ 72 72 72 216 36 2,500 2 11.57 N/A N/A 0 Yes
SWR03ED-72-72-96 109 134 108 36″ 72 72 96 288 45 3,500 3 12.15 N/A N/A 0 Yes
SWR03ED-72-96-96 111 168 108 36″ 72 96 96 384 54 4,500 3 11.72 N/A N/A 0 Yes
SWR03ED-72-120-96
113 198 108 36″ 72 120 96 480 63 5,500 3 11.46 N/A N/A 0 Yes
SWR03ED-84-84-84 121 152 96 42″ 84 84 84 343 54 4,000 3 11.66 N/A N/A 0 Yes
SWR03ED-84-96-84 123 168 96 42″ 84 96 84 392 54 4,500 3 11.48 N/A N/A 0 Yes
SWR03ED-84-120-84
125 198 96 42″ 84 120 84 490 63 5,500 3 11.22 N/A N/A 0 Yes
SWR03ED-84-120-96
129 198 108 42″ 84 120 96 560 63 7,000 5 12.50 N/A N/A 0 Yes
SWR03ED-96-96-96 139 174 108 48″ 96 96 96 512 63 6,000 3 11.72 N/A N/A 0 Yes
SWR03ED-96-120-96
145 198 108 48″ 96 120 96 640 72 8,000 5 12.50 N/A N/A 0 Yes
SWR03ED-96-144-96
149 222 108 48″ 96 144 96 768 81 9,000 7 1/2 11.72 N/A N/A 0 Yes
SWR03ED-96-168-96
153 258 108 48″ 96 168 96 896 90 12,000 7 1/2 13.39 N/A N/A 0 Yes
SWR03ED-120-120-96
173 198 108 60″ 120 120 96 800 81 9,000 7 1/2 11.25 N/A N/A 0 Yes
SWR03ED-120-120-120
177 210 132 60″ 120 120 120 1,000 90 12,000 7 1/2 12.00 N/A N/A 0 Yes
SWR03ED-120-144-96
177 234 108 60″ 120 144 96 960 90 12,000 7 1/2 12.50 N/A N/A 0 Yes
SWR03ED-120-144-120
183 234 132 60″ 120 144 120 1,200 99 14,000 10 11.66 N/A N/A 0 Yes
SWR03ED-120-168-96
183 258 108 60″ 120 168 96 1,120 99 14,000 10 12.50 N/A N/A 0 Yes
SWR03ED-120-168-120
185 267 132 60″ 120 168 120 1,400 108 16,000 10 11.43 N/A N/A 0 Yes
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
SWR03ED-48-48-60
77 106 123 24″ 48 48 60 80 36 1,000 1 12.50 62 1/4 0.06 Yes
SWR03ED-48-48-72
77 106 135 24″ 48 48 72 96 36 1,400 1 14.58 62 1/4 0.06 Yes
SWR03ED-48-48-96
79 106 159 24″ 48 48 96 128 36 1,700 1 13.28 62 1/4 0.06 Yes
SWR03ED-48-72-72
79 130 135 24″ 48 72 72 144 36 1,700 1 11.81 62 1/4 0.06 Yes
SWR03ED-48-72-96
83 130 159 24″ 48 72 96 192 45 2,500 2 13.02 62 1/4 0.06 Yes
SWR03ED-48-96-72 83 154 135 24″ 48 96 72 192 45 2,500 2 13.02 62 1/4 0.06 Yes
SWR03ED-48-96-96 83 158 159 24″ 48 96 96 256 45 3,000 2 11.72 62 1/4 0.06 Yes
SWR03ED-60-60-60
89 118 123 30″ 60 60 60 125 36 1,400 1 11.20 62 1/4 0.06 Yes
SWR03ED-60-60-72 91 118 135 30″ 60 60 72 150 36 1,700 1 11.33 62 1/4 0.06 Yes
SWR03ED-60-60-96 95 118 159 30″ 60 60 96 200 45 2,500 2 12.50 62 1/4 0.06 Yes
SWR03ED-60-72-72 95 130 135 30″ 60 72 72 180 45 2,500 2 13.89 62 1/4 0.06 Yes
SWR03ED-60-72-96 95 134 159 30″ 60 72 96 240 45 3,000 2 12.50 62 1/4 0.06 Yes
SWR03ED-60-96-96 97 164 159 30″ 60 96 96 320 54 4,000 3 12.50 100 1/4 0.10 Yes
SWR03ED-72-72-72
107 130 135 36″ 72 72 72 216 45 2,500 2 11.57 62 1/4 0.06 Yes
SWR03ED-72-72-96 109 134 159 36″ 72 72 96 288 54 3,500 3 12.15 62 1/4 0.06 Yes
SWR03ED-72-96-96 111 168 159 36″ 72 96 96 384 63 4,500 3 11.72 100 1/4 0.10 Yes
SWR03ED-72-120-96
113 198 159 36″ 72 120 96 480 63 5,500 3 11.46 100 1/4 0.10 Yes
SWR03ED-84-84-84 121 152 147 42″ 84 84 84 343 54 4,000 3 11.66 100 1/4 0.10 Yes
SWR03ED-84-96-84 123 168 147 42″ 84 96 84 392 63 4,500 3 11.48 100 1/4 0.10 Yes
SWR03ED-84-120-84
125 198 147 42″ 84 120 84 490 81 5,500 3 11.22 250 1/4 0.25 Yes
SWR03ED-84-120-96
129 198 159 42″ 84 120 96 560 81 7,000 5 12.50 250 1/4 0.25 Yes
SWR03ED-96-96-96 139 174 159 48″ 96 96 96 512 81 6,000 3 11.72 250 1/4 0.25 Yes
SWR03ED-96-120-96
145 198 159 48″ 96 120 96 640 90 8,000 5 12.50 250 1/4 0.25 Yes
SWR03ED-96-144-96
149 222 159 48″ 96 144 96 768 90 9,000 7 1/2 11.72 250 1/4 0.25 Yes
SWR03ED-96-168-96
153 258 159 48″ 96 168 96 896 99 12,000 7 1/2 13.39 250 1/4 0.25 Yes
SWR03ED-120-120-96
173 198 159 60″ 120 120 96 800 99 9,000 7 1/2 11.25 250 1/4 0.25 Yes
SWR03ED-120-120-120
177 210 183 60″ 120 120 120 1,000 108 12,000 7 1/2 12.00 250 1/4 0.25 Yes
SWR03ED-120-144-96
177 234 159 60″ 120 144 96 960 108 12,000 7 1/2 12.50 250 1/4 0.25 Yes
SWR03ED-120-144-120
183 234 183 60″ 120 144 120 1,200 126 14,000 10 11.66 250 1/4 0.25 Yes
SWR03ED-120-168-96
183 258 159 60″ 120 168 96 1,120 126 14,000 10 12.50 250 1/4 0.25 Yes
SWR03ED-120-168-120
185 267 183 60″ 120 168 120 1,400 153 16,000 10 11.43 750 1 0.51 Yes

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