Furnace

Chemical Adsorption Port Assembly

  1. Locate the two bracket mounting holes on the elevator panel. If there are screws in the mounting holes, remove them.
  2. Position the chemical adsorption port assembly behind the P0 tube and align the two holes on the back of the furnace assembly shelf with the two mounting holes on the elevator panel.
  3. Insert thumb screws into the mounting holes. Turn the screws clockwise and tighten with a flat-blade screwdriver.

  1. Attach the fan cable to the Valve / Fan port. If connecting the electronic trigger signal to a mass spectrometer, the Mass Spec Interface Cable (part number 202-60815-00) should be used. It has a 25 pin D connector for the mass spec electronic trigger signal in addition to the valve and fan signals.
  2. Attach the sample thermocouple cable to the Sample Thermocouple port.
  3. Ensure that the exhaust port is properly connected to safely exhaust hazardous gases.
  4. Attach the gas flow tubing to the Gas flow meter port.

Attach the Furnace

  A supply of dry, clean, house / compressed air should be available to attach to the furnace for cooling. The air pressure should be well regulated and adjustable at pressures less than 20 psig at the outlet.
  1. Place and center the furnace on the elevator.
  2. Insert the furnace power cable into the power connector. Twist the power cable to lock into place.
  3. Connect the furnace thermocouple plug to the Thermocouple connector.
  4. Connect the cooling gas tube to the Cooling Gas connector.

  1. Connect a hose from the house / compressed air supply to the furnace cooling gas inlet located on the side panel of the analyzer.

Ensure the supply gas is set at 5 psig (35 kPag). If the pressure is below 3 psig (20 kPag) or above 10 psig (70 kPag), the furnace controller may not be able to control the stability of ramping, or may be unable to cool the furnace within a reasonable amount of time.

 

Do not allow the pressure to exceed 20 psig (140 kPag). Pressures higher than 20 psig may cause the internal tubing fittings to fail.

  1. Connect an exhaust hose to the Exhaust Hose port on the right side panel. The exhaust must vent safely to an exhaust hood or other venting system.
 
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