May 2020, Rev 4
Page
4
of
6
TROUBLE SHOOTING AND MAINTENANCE
PART A.
THE FLOW SYSTEM
A1.
DIGITAL FLOW INDICATOR
(i)
NIL DISPLAY
Check :-
Batteries are installed correctly.
That lead wires from the Flowsensor are appropriately fastened to the
correct terminals.
(ii)
INDICATOR ERROR
Check
:- Flowsensor operation, (See
‘Flowsensor’ below).
NOTES
1.
The digital flow indicator is individually factory calibrated & issued with a “K” factor to match the
unit. The “K” factor is programmed into the flow indicator during manufacture and is shown on a label on
the side of the indicator.
2.
Page 5 & 6 of this manual show details on correct wiring & battery installation.
3.
Page 2 & 3 of this manual provides information on the normal operating display & also how to reset the
resetable total (if desired).
A2.
THE FLOWSENSOR
The operation of the flowsensor is dependant on correct installation in the installation fitting. The flowsensor has
two lugs inside the cap which locate in the slots in the flowsensor insert. The insert slots must be parallel with the
liquid flow. Care must be taken that the flowsensor is not over-tightened in the insert, as this may cause the insert
to rotate, leaving the paddlewheel misaligned to the flow direction.
Debris in the flow may foul or damage the paddlewheel, which would then require removal and replacement.
To remove the paddlewheel from its housing rotate th
e ‘red’ locking cap anti-clockwise until the cap is clear of the
housing insert, then using the wire bale, remove the complete paddlewheel assembly from its housing b
y ‘gently’
twisting and pulling outwards.
A3.
PADDLEWHEEL REPLACEMENT
(i)
With a small flat-bladed screwdriver, gently pry away one of the paddlewheel mounting
lugs from the pin.
(ii)
When one end of the pin is free gently work the paddlewheel and pin out of the
remaining lug.
(iii)
Clean or replace.
(iv)
To reinstall the paddlewheel and pin reverse steps (i) and (ii) above.
(v)
The paddlewheel should spin freely when flicked by the finger.
The flowsensor
‘O-Rings’ should be checked periodically and replaced when necessary.
The flowsensor shaft,
‘O-Rings’ and insert barrel need lubrication as required.
Lubricate with silicone oil.
