RTC LA-306 with double UNLOAD extension
Click to see larger picture. | Click here to see specifications datasheet for the LA-306 with special 30-inch unload extension.
Click here to see picture book.
Factory Reconditioned RTC LA-306 IR Belt Furnaces
At 50-60% of the price of a new LA-306, we have a limited number of refurbished RTC LA-306 furnaces in stock and a few more in the warehouse available for reconditioning in our factory. Or we can reconditon your LA-306 furnace with new digital controllers, electronics and lamps including replacement of any missing, damaged or necessary worn parts. These units are fully tested to original RTC factory specifications and are warranteed for one year from shipment. These furnaces are offered in conjunction with RGL Enterprises.
LCI Refurbished LA-306 Control Console (View panel ON). All new electronics with digital controls. >> Go to Control Console page.
Compact High Temperature Infrared Thermal Processing Belt Furnace
True near-infrared furnace. The LA-306 is a compact high temperature production and laboratory infrared furnace. The small 6 inch wide chamber offers excellent temperature control and rapid rise to 1000°C. Process atmosphere is controlled much like a clean room: pressurized gas is pushed through the heating chamber insulation providing a pre-heated, laminar flow for a uniform, stable atmosphere. Precise temperature is maintained by control thermocouples above the belt in each zone quickly sensing changing conditions. IR quartz heating lamps inside the chamber instantaneously adjust their output to achieve tight temperature control: each load through the furnace sees the same temperature. The small size and furnace chamber assures good temperature control with efficient use of power and proces gas. The LA-306 furnace can be configured for one gas (CDA, Nitrogen) or dual gas operation (nitrogen and forming gas).
The furnace is operated via individual digital PID controllers to control the temperature in each zone. For efficiency and smooth control, phase-angle fired SCR's are used to power the lamps.
Process Applications
The LA-306 can process substrates, wafers, PCBs, metal, ceramic, glass or polycarbonate parts for Package Sealing, Epoxy Die Attach, Polymer Curing, Reflow Soldering, Hybrid/Thick Film Firing, General Thermal Processing, Brazing, Annealing, Tempering and Metal Sintering applications. This furnace is popular for use dental labs and dental production applications.
Click to view movie clips of the RTC LA-306 startup, profiling and cooldown.
Typical RTC LA-306 Furnace Profile at 800°C
Furnace Arrangement
| THERMAL PROCESSING | |
| Parameter | RTC LA-306 |
|---|---|
| Load Station | 215 mm (8.5 inches) |
| Entrance Isolation Baffle with Venturi Exhaust | 159 mm (6.25 inches) |
| IR Heating Chamber, Zone 1 | 168 mm (6.6 inches) |
| IR Heating Chamber Zone 2 | 363 mm (14.3 inches) |
| IR Heating Chamber Zone 3 | 168 mm (6.6 inches) |
| Transition Tunnel (with optional Venturi Exhaust) | 159 mm (6.25 inches) |
| CACT Closed Atmosphere Cooling Chamber | 1015 cm (40 inches) |
| Unload Station | 215 mm (8.5 inches) / with extension 9.78 mm (38.5 inches) |
Typical RTC LA-306 Furnace Entrance, Front View and Furnace Internals
Specifications for RTC LA-306 Laboratory Furnace
DATASHEET: 
OWNER'S MANUAL:
NEW! UPGRADES FROM SINGLE PHASE TO 3-PHASE NOW AVAILABLE
| SPECIFICATIONS | |
| Parameter | LA-306 |
|---|---|
| Process Gas | CDA, Nitrogen (-N), Forming Gas with premixed Hydrogen and Nitrogen (-FG) |
| Control Zones | 3 zones |
| Heating Chamber length | 700 mm (27.5 inches) |
| Cooling Chamber | CACT – CDA or N2 convective and Radiant cooling, exterior fan heat removal. |
| Belt Speed | 25-500 mm/min (1-20 ipm) or 25-1000 mm/min (2-40) ipm (other speeds available) |
| Conveyor Belt | BNV- low mass, stabilized Nichrome-V |
| Belt Size, nominal width | 150 mm (6 in.) |
| Exhaust | Improved venturi exhaust stacks to reduce process gas consumption. Number of stacks vary with process requirements. |
| Temperature Capacity, max | 1000°C |
| Electrical | Single phase design. All models include universal transformers which accommodate 208-240 Vac and 50/60 Hz frequency anywhere in the world, allowing furnace relocation without external equipment. IR lamp controls automatically keep IR spectrum constant. |
Facility Requirements
SPECIFICATIONS |
|||
| Parameter | RTC LA-306 | Max Connected Power, Current | Operating Current @ 950C |
|---|---|---|---|
| Single Phase Power Curve: Operating Current as a function of Temperature |
208 Vac, 1 ph, 50/60 Hz 220 Vac, 1 ph, 50/60 Hz 230 Vac, 1 ph, 50 Hz (EU) /60 Hz 240 Vac, 1 ph, 50/60 Hz |
14.0 kW, 67.3 14.3 kW, 65,2 14.6 kW, 63.7 15.0 kW, 62.3 |
39.0 A 38.0 A 36.9 A 36.0 A |
| 3-Phase Power Curve: Operating Current as a function of Temperature |
208 Vac, 3 ph, 50/60 Hz 220 Vac, 3 ph, 50/60 Hz 380 Vac, 3 ph, 50/60 Hz 415 Vac, 3 ph, 50/60 Hz |
14.0 kW, 38.9 14.3 kW, 37.7 14.3 kW, 37.7 15.0 kW, 36.0 |
26.0 A 25.0 A 25.0 A 23.0 A |
| Parameter | Process Section | Typical (CDA exchange rate: 2x) 425 C operation, balanced flow |
Typical (N2 exch rate: 3x) 950 C, low O2, 25 sLpm excess flow |
| Process Gas Supply | Gas 1 | 80 Lpm @ 5 bar (170 SCFH @ 70 psig) |
146 Lpm @ 5 bar (308 SCFH @ 70 psig) |
| Gas 2 (Heating Chamber only) | see Gas 1 |
33 m3/hr @ 5 bar (69 CFM @ 70 psig) |
|
| Process Gas Exhaust | Gas 1 + Gas 2 | 80 Lpm (170 SCFH) |
95 Lpm (202 SCFH) |
| Enclosure Ventilation | Furnace Cabinet Fan (1) vent to room or facility exhaust system |
930 m3/hr @ 30°C (550 cfm @ 86°F) |
|
| Control Cabinet Fans (2) (vents to room) |
360 m3/hr @ 30°C (212 cfm @ 86°F) |
||
| Dimensions | Length | 2.59 m (102 inches) / with 30-inch unload extension: 3.35 m (132 in.) | |
| Width | 0.46 m (18 inches) | ||
| Height | 1.64 m +/- 0.0254 (62.25 inches +/- 1.0) | ||
| Adjustable Conveyor Height | 965 mm +/- 25.4 (38 inch +/- 1.0) | ||
| Weight | 365 kg (800 LB) | ||
LA-306 Furnace Standard Features and Options
Standard features are listed on the Standard Features pages (see link below). Popular options include the following:
| POPULAR OPTIONS | |||
| Code | Description | Code | Description |
|---|---|---|---|
| NO | Nitrogen Operation, Dual Gas (N2 & FG) | OA | Oxygen Analyzer |
| LT | Process Ready Light Tower | MA | Moisture Analyzer |
| AFR | Coalescing Air Filter & Regulator | CB | Circuit Breaker |