Neptune TRU/FLO, Installation And Maintenance Manual

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Installing the TRU/FLO
TRU/FLO Compound Meter Installation and Maintenance Guide 11
Ensuring Proper Installation
After the TRU/FLO meter is installed, you must carefully fill the meter
with water. Complete the following steps:
1 Make sure the service line has been flushed of any debris before
installing the meter.
2 Turn the bleed screw (located on the cover) counter-clockwise one
to two turns. See Figure 5.
3 With the outlet-side gate valve closed, slowly open the inlet-side
valve to pressurize the meter.
4 Turn the air bleed screw (located next to the turbine register) with a
flat screwdriver.
Figure 5 Bleed Screw
5 Close the air bleed screw clockwise when the air is completely
vented.
6 Slowly open the outlet-side gate valve until downstream is
pressurized.
After installation, it is important that the upstream (inlet) valve be put in the
“full open” position during service. A partially throttled upstream valve causes
flow profile distortion which adversely affects meter accuracy.