Siemens FIDAMAT 6 Operating Instructions Manual page 94

Maintenance
6.1 Maintenance concept
6.1.1 Pump maintenance
6.1.2 Replacing the filter plate
6-2
Warning
Before opening the unit shut off both the gas and power supply.
Use the appropriate tools for setting work so as to prevent short
circuits occurring on the electronic boards.
Incorrect assembly, installation or calibration can under certain
circumstance result in dangerous gas escaping. This represents
endangerment of the health of personnel (symptoms of poisoning,
chemical burns) and the unit can also suffer damage from corrosive
attack.
In the case of the FIDAMAT 6, only the pump needs regular
maintenance. It is recommended that the pump diaphragm be
changed every six months.
First of all, disconnect the analyzer from the power supply.
Remove the unit cover and open the oven.
The pump can now be taken out of the unit. Care should be taken that the
gas connections at the pump do not get damaged.
A pump defect may be noticed by reduced pump performance and also
increased noise in the measurement signal. Check the filter disk as well –
it could be clogged.
Note
Please observe also Section 'Check for leaks' on page 4-3.
The filter plate must be replaced at longer or shorter intervals, depending
on the application.
The seal will also need to be changed at the same time in order to
ensure the filter does not leak. After the inserted insulation material has
been removed, the filter is accessible from the rear of the unit.
Note
Please observe also Section 'Check for leaks' on page 4-3.
FIDAMAT 6 gas analyzer
Operating manual –A5E00222135-01