Furnace Replacement; Removing The Old Furnace - Ametek Dycor CG1100 Series User Manual

Furnace Replacement

Make sure that the power source has been disconnected from the analyzer
when servicing system components. High voltages are present inside the
analyzer when power is applied.

Removing the Old Furnace

1. Remove the cell mount nut (see the "Cell Replacement" section for
help). The cell and inlet tube can be removed as a single unit.
2. Disconnect the thermocouple wires from TB5 on the analog board.
3. Disconnect the furnace wires from TB6 on the analog board.
4. Remove all inlet tubing. Remove the T-fitting from the stainless steel
exhaust tubing.
5. Place a nut driver on the left and right of the furnace. Take the nut
driver on the left and loosen it until the kep nut can be removed. Pull
the plate, acorn nut, and all-thread piece out to the right and remove.
6. Carefully feed the thermocouple and furnace wires through the hole
in the insulation cover as you remove the furnace insulation cover
from the insulation base. The thermocouple wires and furnace wires
should remain attached to the furnace.
Figure 7-4. Furnace assembly.
The furnace is hot, even after power has been disconnected from the
analyzer. Use caution and wear appropriate gloves if removing the
furnace insulation cover to access the furnace.
Service and Parts | 7-5