Operator's manual Manual

42 Gas sampling and gas conditioning technology 14.1a-ME
The maintenance intervals depend on the process conditions and therefore need to be determined for
specific applications.
All serviceable parts are mounted in an easily accessible location in the front of the compact gas
conditioning unit CSS-VC...
 Change filter elements of the dust and aerosol filters (FPF-0,1GF/FPF+/universal filter/aerosol
filter) when there is too little flow or after visual inspection (see Section 18.1);
NOTICE!
In order to protect downstream analysers, in the event of a
condensate breakthrough, the wet filter element must always be
changed.
 Check the condensate pump SR25.2 every six months and replace if necessary (see section
18.3.1)
 Clean cooling fins on the compressor cooler of dust regularly using compressed air (see Section
18.4)
18.1 CHANGE THE FILTER ELEMENTS AND O RINGS
To change the filter elements and O-rings:
 Unplug the gas conditioning unit from the mains
 Unscrew filter glass
 Unscrew filter element with filter holder
 Exchange filter element and/or O-ring(s). Ensure correct seating of filter element and O-
ring(s).
 Screw glass filter cap back
18.2 MAINTENANCE OF THE SAMPLE GAS PUMP(S)
Diaphragm and valve plates are the only pump parts subject to wear. They are easy to change. Wear
is indicated by a drop in pneumatic power.
WARNING!
Hazardous voltage. Pull the mains plug out before carrying out
work on the gas conditioning unit!
 Unplug the gas conditioning unit from the mains;
 Loosen 4 screws (captive) on the front panel and, without removing the hoses and wiring, bring
slightly forward and pull up out of the housing support; the front panel can now be suspended
back in the housing holder by rotating it 90° (Figure 17).