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Servicing
Filter Tape Replacement
Filter Tape
Replacement
Carbon Vane
Replacement
Nephelometer and
Beta Attenuation
Servicing
7-2
Model 5030 SHARP Monitor Instruction Manual
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. If an antistatic wrist strap
is not available, be sure to touch a grounded metal object before touching
any internal components. When the instrument is unplugged, the chassis is
not at earth ground.
Handle all printed circuit boards by the edges.
As soon as the filter tape on the filter roll is empty, a replacement of the roll
is necessary.
The filter tape is usually replaced every year, but this can also depend on the
non-standard operational parameters chosen by the user or the loading per
filter spot. In high concentration areas, more frequent filter changes can
occur due to higher loading. As a basis for an estimation of this time, the
reference can serve that
800-900 single measurements. Due to the uncertainty of filter tape life in
higher concentration areas, checking the filter tape every 6-9 months may be
warranted.
To change the filter tape, follow the instructions in the "Installation"
chapter.
Vane replacement must be done outdoors. Failure to do so may introduce
carbon particles into the air and damage electronic equipment. Before
servicing, the vacuum pump must be switched off and secured from any
accidental start-up.
In order to replace the vanes, the silencer housing, the silencer diaphragm,
the distance ring, and the cylinder cover must be removed (see
Servicing of the Nephelometer and Beta Attenuation Chambers should be
performed by a trained technician. A technical bulletin is available via the
internet at http://www.thermo.com/air.
40 m of tape per roll is sufficient for approximately
~
Figure
7-1).
Thermo Fisher Scientific
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