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Troubleshooting & Repair Teledyne API – Technical Manual - Model 300E Family CO Analyzers
300
13.6.2. 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.
3. Open the instrument’s hinged front panel.
4. Locate the GFC Wheel/motor assembly. See Figure 3-4.
5.
Unpl
ug the following electronic components:
The GFC Wheel housing temperature sensor
GFC Wheel heater
GFC Wheel motor power supply
SAFETY SHIELD
SYNCHRONOUS MOTOR
SOURCE ASSEMBLY
THERMISTOR
HEATER
Figure 13-15: Opening the GFC Wheel Housing
6. Remove the three (3) screws holding the opto-pickup printed circuit assembly to the GFC Wheel
housing.
04288D DCN5752