Teledyne GFC-7000E - Trace CO2 Analyzer - Manual (Page 220)

Model GFC7000E Instruction Manual TROUBLESHOOTING & REPAIR PROCEDURES
04584 Rev A1 209
11.5.2. Removing/Replacing the GFC Wheel
When Removing or replacing the GFC Wheel it is important to perform the disassembly in the
following order to avoid damaging the components:
1. Turn off the analyzer.
2. Remove the top cover as described in “Getting Started” Section 3.1.
3. Open the Instrument’s hinged front panel.
4. Locate the GFC wheel/motor assembly (see Figure 3-11).
5. unplug the following electronic components:
• The GFC wheel housing temperature sensor;
• GFC wheel heater
• GFC wheel motor power supply
• IR source
6. Unscrew the purge gas line hex nut and remove the 1/8 inch FEP purge gas line.
7
8
9
10
Figure 11-7: Opening the GFC Wheel Housing
7. Remove the two (2) screws holding the opto-pickup printed circuit assembly to the GFC wheel
housing.
8. Carefully remove the opto-pickup printed circuit assembly.
9. Remove the four (4) screws holding the GFC wheel motor/heat sink assembly to the GFC
wheel housing.
10. Carefully remove the GFC Wheel motor/heat sink assembly from the GFC wheel housing.