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RECIRCULATION FOR UNIFORMITY OF +/-10F
A heavy duty high volume, high velocity air cooled alloy fan is mounted in the top with full recirculation ducting. The ducting features adjustable vents to control the recirculation pattern of the air. A minimum of 40 volume changes per minute of the en tire interior is achieved. The fan is dynamically balanced and engineered for long life at high temperatures. The fan is manufactured by Industrial Gas Engineering and is very reliable.
HEAVY GAUGE STAINLESS STEEL INTERIOR
The entire interior is made of stainless steel for heat and corrosion resistance. The bottom is 10 gauge while the liners and baffles are 18 gauge. They are designed to expand and contract with the heat.
HEAVY DUTY UNITIZED CASE CONSTRUCTION
The oven case is constructed of reinforced 10 gauge steel with an integrated floor stand with leveling bolts and mounting holes. The case is primed with 800F silicone paint and finished in machine enamel.
SEVEN INCHES OF INSULATION
1” of 2300F ceramic fiber insulation is backed up with 6” of mineral wool sandwiched between the interior and exterior of the oven. The bottom insulation is non-compressible 2300F firebrick and calcium silicate. No asbestos is used.
HORIZONTAL OR VERTICAL DOORS
The DV Model door is a deep plug horizontal door. The models that are 36” wide (or wider for special models) feature two doors that meet in the middle. The horizontal doors feature ceramic fiber tadpole seals. Pneumatic and electric vertical doors are al so available (DR Models). These feature a front vestibule of castable refractory and ceramic fiber lined doors which seal against this non-expanding vestibule. The DR Models can be supplied with traveling rollers on the vertical doors to match roller hearths inside the oven. Special hydraulic forklift loaders are also available for loading heavy loads.
INCOLOY ELEMENTS FOR ELECTRIC
Electric ovens feature elements located in the recirculating plenum chamber away from the working zone. These are incoloy sheathed elements which are rated for 1600F. They are replaced easily from the back.
HIGH TURN DOWN RATIO GAS BURNER FOR GAS
The gas fired ovens feature an Eclipse gas burner with a high turn down ratio. The gas system includes a proportional motor control which adjusts both gas and air to maintain stoichiometric firing, a gas regulator, lubricated gas cock, combustion air pressure switch, high/low gas pressure switch, pilot system with pilot solenoid and pilot regulator, two shut off solenoids, UV flame safety, air purge system (4 volume changes) and integrated combustion blower. The system meets NFPA and FM standards. The g as burner fires into the plenum chamber avoiding flame impingement on work. May be specified for natural gas or propane.
DIGITAL PID CONTROL AND HIGH LIMIT SYSTEM
The standard control is a Honeywell UDC 2300 digital PID 3 mode tuning control. All fuses, transformers, contactors, and controls are located in a NEMA 1 panel. Quiet, long life mercury power contactors are standard on electric ovens (SCRs are optional) . The thermocouples are sheathed Type K. The control voltage is transformed to 120 volts. A Honeywell UDC 2300 digital high limit back up control with manual reset, back up contactors and separate thermocouple is included. Single point power connection.
TESTING AND INSTRUCTIONS
The electric ovens are power tested to insure proper watt ratings. Gas ovens are completely tested at operating gas pressures that are specified by customer. A complete instruction manual includes easy start up instructions, theory of operation, maintenance instructions, parts list, and a detailed trouble shooting guide. A ladder logic diagram and panel layout are prepared on CAD for easy readability. Gas ovens include a gas schematic.
WARRANTY
The oven is warranted for one year except for elements and thermocouples (warranted for 6 months.)
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