PGC5007
PGC5007 Operating Instructions 5 Furnace repair
23 OI/PGC5007-EN, Rev C
5 Furnace repair
This procedure explains how to remove and replace the furnace inside the isothermal oven. It also explains how to remove and
replace the furnace tube within the furnace assembly, and how to replace the thermocouple.
5.1 Removing the furnace cover
1. Verify that the area is non-hazardous.
2. Turn off all power to the analyzer.
Parts of this assembly may be hot to the touch.
3. Allow furnace to cool before proceeding (at least 30 minutes).
Analyzer should be allowed to cool before removing all flows from the columns.
4. Shut off all flows.
5. Open the Isothermal Oven door.
6. Remove the Isothermal Oven door by lifting the door off the hinges, to provide more access room.
7. If the diaphragm valves are on a slider (see Figure 5.1), you will have to move them up to allow removal of the furnace
housing cover.
Thumbscrew
Thumbscrew
Locking Pin
(behind
thumbscrew)
Fig. 7.1. Valves on Slider
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