Servicing
Motor Replacement
Thermo Fisher Scientific
Model 410
i
Instruction Manual
7-15
4.
Insert the 5/64-inch Allen wrench through the access hole in the
bottom of the motor plate, loosen the set screw holding the filter wheel
to the motor shaft, and
carefully
pry the filter wheel off the motor shaft
(
Figure 7–6
).
5.
Install new filter wheel by following the previous steps in reverse. Make
sure that the set screw seats on the flat of the motor shaft.
6.
After the filter wheel is installed, spin the wheel and observe that it runs
true on the motor shaft.
7.
Let the instrument sample zero air for about 90 minutes.
8.
From the Main Menu, choose Service >
Initial S/R Ratio
.
The Initial S/R Ratio screen appears.
Note
If Service Mode is not displayed, refer to “
Accessing the Service
Mode
” on page
7-4
, then return to the beginning of this step.
▲
9.
At the Initial S/R Ratio screen, press
to
select set the initial S/R
ratio to the value of the current ratio and press to store the value. The
initial S/R ratio should be between 1.800 and 1.20.
10.
Calibrate the instrument. Refer to the “
Calibration
” chapter in this
manual.
Use the following procedure to replace the motor. Refer to
Figure 7–7
or
Figure 7–8
as appropriate.
Equipment Required:
Motor
Allen wrenches, 5/32-inch and 5/64-inch
Flatblade 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.
▲
Motor
Replacement