Top Loading Ovens

HEAVY DUTY ELECTRIC AND GAS 
HORIZONTAL AIR FLOW
TOP-LOADING OVENS

For annealing, pre-heating, baking or any other heat processing where overhead handling equipment is used. Temperatures to 5250C. Full opening door exposes entire workspace for easy loading. Constructed for long hard continuous use. Ideal for severs service applications - load capacities up to 4000 lbs

STANDARD FEATURES

· Controls
- Digital, microprocessor based, thermocouple actuated, indicating    temperature controller
- Modulating burner on gas ovens.
- Motor control pushbuttons and on off heat switch
- Easy-to-see pilot lights

· Safety Equipment - electric Oven
- Adjustable, thermocouple actuated, manual reset excess temperature   controller
- Separate heating element control contactors
- Recirculating blower air flow safety switch

· Safety Equipment - Gas Oven

- Adjustable, thermocouple actuated, manual reset excess   temperature controller.
- Electronic flame safeguard protection
- Powered forced exhauster for combustion venting
- Exhauster air flow safety switch
- Recirculating blower air flow safety switch
- Purge timer
- High gas pressure switch
- Low gas pressure switch 
- Latch-type manual reset main gas valve
- Testing device to test tight closure of main gas valve
- Solenoid blocking valve up to 400,000 BTU/HR heat input;
  motorized backup valve and vent valve over 400,000 BTU/Hr

· Every oven fully assembled and individually factory tested

Specifications

Specifications subject to change without prior notice

STANDARD EQUIPMENT

All Models

- 230 volts, 3-phase, 50Hz
- Other electrical characteristics available
Inner oven floor reinforced for loading and equipped with removable grating. Oven top surface constructed of ¼" steel plate and workspace interior equipped with wear bars to prevent damage during loading. Automatic door opening mechanism consisting of solid steel shaft, bearings, and air cylinder system.

Electric Models

Each features completely wired, side access control panel enclosing terminals for incoming power, temperature controllers, push buttons and pilot lights. Motor starter and heating element contactors electrically interlocked to shut off heaters if power to blower is interrupted and to permit operation of blower without heat for cooling. Incoloy sheathed tubular heating elements. Exhaust outlet 4" diameter

· Gas Models
- 1,000 BTU natural gas at 6" water column pressure, 1" NPT inlet
- Other gas characteristics available
Control panel as detailed above and safety devices as listed on the front of this bulletin. Automatic preignition purge period and pushbutton electric ignition contributes to ease of operation. Modulating gas burner is protected with electronic flame safety relay.
These electric or gas ovens come in four sizes. They feature full horizontal airflow with adjustable patented opposed louvers for balanced airflow. The horizontal airflow pattern allows heated air to pass between stacked parts for uniform heating. High volume recirculating blowers are specifically designed for heating heavy loads.
The removable grating on the oven floor protects the oven from impact during loading and distributes concentrated loads across the entire oven floor. The grating allows for air movement beneath the work for uniform processing.
The LA and LC series have the heat chamber located to the rear of the workspace. ON the LB and LD Series, the heat chamber is located to the right side of the workspace to position the supply and return ductwork at the front and rear of the workspace respectively. This provides the shortest distance between ducts, which minimizes the temperature differential across the workspace.
1000oF Models Only.

Insulated with 2" of 10500C insulating block backed up with 6750C industrial rockwool. 16 gauge aluminized steelwork space interior; 304 stainless steel heat chamber interior with stainless steel recirculating blower. Gas models include stainless steel exhauster.

ADDITIONAL EQUIPMENT AVAILABLE

· Programmable Temperature Controller, microprocessor based, digital indicating, thermocouple actuated, in lieu of standard controller......PTC3
· Recording Thermometer, thermocouple actuated, 24-hour, 10" diameter circular chart used in conjunction with standard controller..................RT
· Programmable Recording Temperature Controller, microprocessor based, thermocouple actuated digital display, 24-hour, 10" diameter circular chart, in lieu of standard controller.........................................................................................................................................................PRTC3
· Digital Timing System, incorporated into standard temperature controller, 99 hour 59 minute range, starts timing when temperature reaches set point and shuts down oven at end of set time.......................................................................................................................................................DTS3
· Shut Down Timer, with continuous "hold" feature.1, 5,10 or 30 hour range..........................................................................................................SDT
· Batch Timer, for uniformly timing batch operations. Continuous alarm with door interlock; alarms at end of preset time period until door is opened or timer reset. 1,5,10 or 30 hour range.....................................................................................................................................................................BT
· Automatic Door Switch turns off blower and heat when door is opened. Restores blower and heat on electric models blower only on gas models when door is closed.
· Powered Forced Exhausters