Page 3 of 14
Maintenance Procedures
Disassembly - Flow Meter
Ensure that the fluid supply to the meter is
disconnected, and the line pressure is released
before disassembly.
Refer to the exploded parts diagram and parts list,
for item numbers.
1) Remove the four screws located on the face of the
register. Then remove the face plate cover
including register assembly.
2) Remove the four register mounting screws and
remove the lower half of the register housing.
3) Remove the six cover plate screws (Item 12) and
remove the cover plate (Item 11).
4) Remove the six meter cap screws (Item 5) and
remove the meter cap (Item 4).
5) Remove rotors (Item 3).
Reassembly - Flow Meter
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 shafts at 90
degrees to each other (refer Fig) 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 degrees to the other
rotor.
4) Re-check the operation of the rotors
5) Inspect the gears (Item 6) in the meter cap (Item
4) for wear. (Replace if required, refer to parts on
page 4)
6) 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.
7) Replace the meter cap making sure that the gear
on the rotor is meshing correctly with the gear in
the meter cap (Item 4). Insert the cap head
screws (Item 5) and tighten in a diagonal
sequence 1, 4, 2, 5, 3, 6.
8) Replace the cover plate inspect the o-ring
(item 10), bevel gear (Item 7), for wear or
damage. (Replace if necessary).