Cleaning And Routine Care; Warning; Checking The Pump Inlet Filter - MSA Orion Manual De Operaciones

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Operating Manual
Chapter 6, Warranty, Maintenance and Troubleshooting

Cleaning and Routine Care

Periodically clean the Orion Multigas Detector case with a soft
damp cloth. On diffusion instruments: clean sensor holes on the
instrument front if they are blocked with dirt.
1. Remove the sensor cover plate, sensor membrane, and
sensor cover gasket (see Chapter 8, FIGURE 8-1).
2. Clean the sensor plate holes with a paper clip, wire, or similar
device. The holes may also be cleaned with oil-free
compressed air.
3. Replace sensor membrane with a new one.
Do not attempt to clean the sensor cover plate while it is
in place; sensor damage may occur. The tops of sensors
are very fragile; do not touch or apply pressure to the tops
of any sensors. If a sensor is damaged, it can cause the
unit to give false readings.
The sensor cover plate contains holes for four sensors. In
instruments with less than four sensors, some of the holes
are permanently blocked with special sealing membranes.
Do not puncture these membranes; erroneous gas readings
can result.

Checking The Pump Inlet Filter

Orion Multigas Detectors ordered with the optional internal pump
contain a filtering system to protect the pump from particles and
water in the sample air. If the filter becomes clogged, the sample
flow may be blocked, or and extra load may be placed on the
pump; therefore, check the filter regularly.
The frequency of checks should depend on amount of pump
usage and concentration of particles allowed to enter the pump.
In dirty applications, replace the dust filter every 200 hours.

" WARNING

6-3

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