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TROUBLESHOOTING
Symptom
FLUID WILL NOT
FLOW THROUGH
THE METER
REDUCED FLOW
THROUGH THE
METER
METER READING
INACCURATE
METER NOT
GIVING A PULSE
SIGNAL
Probable Cause
1. Foreign matter blocking
rotors
2. Line strainer blocked
3. Damaged rotors
4. Meter connections over-
tightened
1. Line strainer partially
blocked
2. Fluid is too viscous
1. Fluid flowrate is too low
or too high
2. Air in fluid.
3. Excess wear caused by
incorrect installation
1. Faulty Hall Effect sensor
or Reed Switch
2. Faulty magnet
Corrective Action
Dismantle meter, clean rotors. Strainer must
be fitted in-line.
Clean strainer.
Replace rotors. Strainer must be fitted in-line.
Re-adjust connections.
Clean strainer.
Maximum viscosity 1000 centipoise.
See specifications for minimum and
maximum flowrates.
Bleed air from system.
Check meter for damage. Install correctly.
Replace meter cap for Reed Switch models,
replace PCB for Hall Effect models.
Replace rotors.
3
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