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Carefully separate the LC Display
from the plastic housing and
disconnect the wires from the
pulse terminal block.
2] Remove the mounting adaptor plate
and gasket (Item 8).
3] Loosen the four cap screws (Item 7)
and nuts that hold down the meter
cap (Item 4), remove the screws
and nuts and lift off the cap.
4] Remove the o'ring (Item 2) from the
o'ring groove in the meter cap (Item 4).
5] Remove rotors (Item 3).
Reassembly
1] Before reassembling check the
condition of the rotors (replace if
necessary).
2] Check that the smooth side of the
rotors (not the plug side) is facing
you when inserting the rotors, the
smooth side of the rotor is the
magnet side. There is no difference
between rotor one or rotor two.
3] Replace the rotors (Item 3) onto the
Meter Trouble Shooting
TROUBLE
Fluid will not flow through meter
Reduced flow through the meter
Meter reading inaccurate
Meter not giving a pulse signal
shafts at 90 o to each other (refer
Fig. 5) and check their operation by
turning either of the rotors. If the
rotors are not in mesh correctly or
do not move freely, remove one of
the rotors and replace correctly at
90 o to the other rotor. Re-check the
operation of the rotors.
4] Replace the o'ring (Item 2) into
groove in the meter cap, if the
o'ring has grown or is damaged in
any way replace it with a new part.
5] Replace the meter cap. Insert the
cap head screws (Item 7) and fix
nuts and tighten in the sequence 1,
3, 2, 4
6] The replacement of cables and
connectors are a reversal of the
disassembly procedure, replace
conduit fitting if required. When
replaceing the Standard LC Display,
confirm the orientation marks made
on disassembly are aligned then
screw the register into place.
7] Test the meter by turning the rotors
with a finger or by applying very low
CAUSE
a] Foreign matter blocking rotors
b] Line strainer blocked
c] Damaged rotors
d] Meter connections over tightened
e] Fluid is too viscous
a] Strainer is partially blocked
b] Fluid is too viscous
a] Fluid flow rate is too high or too low
b] Fluid is too viscous
c] Excess wear caused by incorrect
installation
a] Faulty hall effect sensor
b] Faulty reed switch
c] Magnets failed
4
Rotor #1
Rotors must be at 90 o to each other.
air pressure ( a good breath) to one
end of the meter, before returning
the meter to the line.
Pulse Circuit Board (PCB) Notes:
The pulse PCB (Item 5) is fitted with
(A) two reed switches; (B) hall effect
sensors; or (C) one reed switch and
one hall effect sensor. The PCB board
is fastened to the meter cap (Item 4)
by two screws and stand off's. All care
and caution should be taken when
removing or handling the PCB as both
the reed switch and hall effect sensor
are fragile.
Individual reed switches or hall effect
sensors are not available as
replacement parts and are only
available with the PCB (Item 5).
REMEDY
a] Dismantle
meter,
clean
(Strainer must be fitted in line)
b] Clean strainer
c] Replace rotors (Strainer must be
fitted in line)
d] Re-adjust connections
e] See specifications for rated viscosity
a] Clean strainer
b] See specifications for rated viscosity
a] See "specifications" for flow range
b] Bleed air from system
c] Check meter body and rotors.
Replace as required.
a] Replace PCB Board
b] Replace PCB Board
c] Replace rotors
5
Rotor #2
rotors
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