User Manual

19
Maintenance and troubleshooting
Type 8071
9.6. If a problem occurs
Problem Cause Solution
Fluid does not
flow through the
device any more
Obturated device
→ Remove and clean the oval rotors (see chap. "9.4. Dismantle the device" and
"9.5. Assemble the device").
→ Add a strainer of 75 µm upstream of the device.
Obturated strainer (if present)
→ Clean the strainer.
Rotors damaged
→ Replace the rotors (see chap. "10. Spare parts and accessories", "9.4. Dis-
mantle the device" and "9.5. Assemble the device").
Reduced flow
rate through the
device
Strainer (if present) partially obturated
→ Clean the strainer.
Fluid too viscous Use rotors for fluids with a viscosity > 1000 mPa.s.
Incoherent
measurement
Flow rate range not adapted
→ Verify specifications, adjust the device or the flow rate (see chap. "6.2.2.
General data").
Air within the pipe
→ Slowly drain air from the pipe.
Friction due to an incorrect assembly
of the device
→ Verify the assembly of the rotors in the fitting (see chap. "9.4. Dismantle the
device" and chap. "9.5. Assemble the device").
No frequency
output
Incorrect wiring of the outputs
→ Make sure that the device has been wired correctly (see chap. "7.3. Wiring").
Rotors incorrectly mounted
→ Dismantle the device and modify the position of the rotors (see "9.4. Dismantle
the device" and "9.5. Assemble the device").
Magnet damaged
→ Replace the rotors (see chap. "10. Spare parts and accessories", "9.4. Dis-
mantle the device" and "9.5. Assemble the device").
Hall sensor or Reed switch defective
→ Replace the cover with electronic module (see chap. "10. Spare parts and
accessories", 9.4 and 9.5).
English