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Figure 20. Cartridge replacement for meters 4’’ - 14’’
Note the direction of engraved arrow on the outer surface before inserting the cartridge into
the body and re-fitting and tightening the inlet ring. The cartridge upstream face must be on inlet
ring side.
IMPORTANT: For meters greater than 4”, it is strongly recommended to remove the cartridge
with the meter in a vertical position.
For meters equal or greater than 16", the cartridge is centered and fastened into the body by
means of an upstream and downstream stainless steel cross pieces integrating the cartridge parts.
Outer rings are fixed into the meter body to hold the cartridge in place with screws.
Figure 21. Cartridge replacement – meters >16’’
For STD bearing design, place the turbine in a vertical position with the upstream crosspiece
facing up, unscrew the screws holding the upstream crosspiece and remove the crosspiece.
Remove the rotor and the center part of the cartridge. Once all other components are removed,
turn the meter body over, remove the screws and the downstream crosspiece.
For CUS bearing design, place the entire turbine assembly in a vertical position with the
downstream face up, remove the brake pin and axle nut. Remove the center pieces. Unscrew the
screws holding the downstream crosspiece and remove the crosspiece. Remove the rotor and the
center part of the cartridge. Turn the turbine over before disassembling the upstream crosspiece.
Inlet Ring
Screws
Cartridge
Screws
Upstream Crosspiece
Rotor
Cartridge center part
Downstream Crosspiece
Downstream Crosspiece
Shaft
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1
Flanged body
3
Retaining ring
2
Measurement cartridge
4
Boss
2.1
Rotor
5
Enclosure adapter
2.2
Shaft
6
Enclosure
2.3
Upstream crosspiece
7
Enclosure cover
2.4
Central section
8
Coil
2.5
Downstream crosspiece
9
Preamplifier or Terminal
2.6
Elastic ring
2.7
Fixed bearing
2.8
Adjustable bearing
2.9
Bearing shaft
