Palas Fidas 200 Series Operating Manual page 94

7 Maintenance
94
Detaching sampling tube, aerosol inlet tube and gravimetric fil-
ter
Proceed as follows:
1. Release the pipe clamp on the sampling tube slightly, allowing the tube
to be moved vertically.
2. Slide the sampling tube up and place it aside.
3. Use an Allen wrench 2.5 to remove the two screws on the aerosol inlet
tube.
4. Retract the ring on the plug connection to the gravimetric filter and pull
the hose out of the plug connection.
5. Pull the gravimetric filter down and off.
6. Pull the aerosol inlet tube up and out.
ð The optical glass in the aerosol sensor is now accessible.
Cleaning optical glasses
Damage caused by unsuitable cleaning agents
Destruction of the optical glass.
4 Optical glass may be cleaned only with a special cloth for optics.
4 Do not touch optical glass with fingers.
4 Do not use cleaning agents such as acetone to clean the optical
glass.
Use the included cleaning cloth to clean the optical glasses.
Attaching sampling tube, aerosol inlet tube and gravimetric filter
1. Place the aerosol inlet tube on the sensor housing.
2. Working from below, place the gravimetric filter on the sensor housing.
3. Secure the aerosol inlet tube to the sensor housing with the two
screws.
4. Insert the hose in the plug connection.
5. Place the sampling tube on the aerosol inlet tube.
6. Secure the sampling tube with the pipe clamp.
NOTICE
5200-en_V2.0_06/20