31
7
Troubleshooting
Fault symptoms
Possible causes
Procedures
1)
No reading / blank display
No power supply
Check wiring, polarity
Electronic counter defective
Replace electronic counter
Mention SN during order
Counter runs backwards
Meter mounted in wrong
direction
Install meter with arrow
pointing in flow direction
Counter not running
No flow rate
Indicated quantity or flow
rate too small
Flow rate outside allowed
range (below Qmin or above
Qmax of meter)
Check flow rate
If too high, reduce flow or
install larger meter
If too low, increase flow or
install smaller meter
Reduce LFC to 1
Moving parts heavily worn
out due to continuous
overload
Install larger meter
Dirt trap / filter heavily soiled
Clean dirt trap, replace filter
Safety filter in meter intake
clogged
Replace safety filter
Install dirt trap / filter with
correct mesh size
Moving parts jammed
Clean measuring chamber,
replace defective parts
Alignment of inner parts
Align cover and measuring
chamber (rip to rip)
Separating plate broken by
-
Pressure hammer
-
Gas inclusions
Check and rectify operating
conditions and meter
position
Fill pipes slowly
De-aerate pipes thoroughly
Replace defective parts
Indicated quantity or flow
rate too high
Meter positioned wrongly
(e.g. at highest point)
Gas or air inclusion in fluid
Check and rectify operating
conditions and meter
position
De-aerate pipes carefully
Pressure drop at meter too
high
Dirt trap or filter heavily
soiled
Clean dirt trap, replace filter
Flow meter’s safety filter
heavily soiled
Clean safety filter of flow
meter
No frequency signal
No current signal
No pulse output signal
No flow
Check flow using Indication
Wrong parameterisation
Set correct using indication
Transducer defective
Replace transducer
Содержание CONTOIL VZF II
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