Burkert Type 8715 - Manual (Page 40)

40
Maintenance,Troubleshooting
Type 8700, 8701, 8703, 8705
4 5
7
3
2
1
6
1 - Screws
2 - Inlet flange plate
3 - O-ring
4 - O-ring
5 - Stainless steel mesh filter
6 - Orifice tube
7 - O-ring
Fig. 20: Maintenance, Cleaning
procedure:
→
To gain access to the stainless steel mesh filter disc, detach the
input flange plate [2] (see Fig. 20).
→
Take out the stainless steel mesh filter disc.
→
Clean the stainless steel mesh filter disc [5] using distilled water
(not tap water), acetone, isopropanol or compressed air.
→
Dry the parts after cleaning.
→
Re-insert parts in the correct sequence and position
(see Fig. 20). The fine mesh of the filter disc [5] must face
the input flange plate [2].
9.2.2. cleaning and recalibration at the
factory
If the sensor is excessively soiled or damaged by the operating gas, the
device may deviate significantly from the mass flow-rate measurement.
Cleaning or replacement followed by recalibration at the factory will
then be required.
note
• Recalibration must be carried out at the factory as it requires
the use of very precise references and a specific digital
communication system.
English