Advertisement
Servicing
Fan Replacement - Mass Flow Controllers
Fan Replacement -
Mass Flow
Controllers
7-18
Model 146i Instruction Manual
7. Replace the measurement bench.
Figure 7-6. Replacing the Rear Panel Fan
Use the following procedure to replace the cooling fan for the mass flow
controllers
(Figure
7-6).
Equipment Required:
Fan
Philips screwdriver
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap must
be worn while handling any internal component.
1. Turn instrument OFF, unplug the power cord, and remove the cover.
2. Remove the mass flow controllers. Refer to
Replacement"
on
page
3. Disconnect the electrical connection from the fan.
4. Remove the fan mounting screws (4) and nuts and remove the fan.
5. Install the new fan using the previous steps in reverse.
Mounting Screws (4)
Filter
"Mass Flow Controller
7-14.
Fan Guard
Thermo Fisher Scientific
Advertisement
Troubleshooting
