Agilent Technologies 6850 Series Service Information page 191

3. Pull the PMT housing off the detector
module and remove the filter from the detec-
tor. Set both in a safe place. Keep the open
end of the PMT covered whenever practical
to avoid light damage to the tube.
4. Remove the exhaust tubing.
5. Remove the sheet metal cover. On the single
wavelength detector, it is held by two
screws at the top and two at the bottom,
while on the dual wavelength detector it is
held by two screws at the top.
6. If replacing the upper (FRONT) heater/sen-
sor, remove it from the detector module.
Install a new heater/sensor. If not replacing
the AUX1 heater, reassemble in reverse
order.
Released: April 2004
7. To replace the lower (AUX1) heater/sensor
Figure 1-25. Heater/Sensors
6850 Series Gas Chromatograph Service Procedures
assembly, loosen the three screws in the
flange adapter that secure the detector body
to the support bracket clamp.
FRONT heater/sensor
AUX1 heater/sensor
191