Neptune HP PROTECTUS III, Installation And Maintenance Manual

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HP PROTECTUS
®
III Installation and Maintenance Guide
15
Chapter 4: Maintenance and Troubleshooting
This chapter provides instructions for maintaining the HP PROTECTUS
®
III meter. The 4-inch,
6-inch, 8-inch, and 10-inch meters in the HP PROTECTUS III product line share similar
features and functions. HP PROTECTUS III meters are composed of five major components:
l
HP PROTECTUS III turbine measuring element.
l
T-10
®
bypass meter.
l
Knuckle valve.
l
UL / FM strainer.
l
Throttle valve located inside the T-10 bypass meter.
Figure 7 – Main Components of the HP PROTECTUS
®
III
Neptune's UME Design
This chapter provides information on the Unitized Measuring Element (UME). You can order
a precalibrated UME from Neptune
®
.
When maintenance is necessary, the complete UME can be quickly and easily interchanged
with a factory-calibrated unit. Complete the following steps:
1. Close all valves (mainline and bypass).
2. Vent the pressure from the meter.
3. Remove the cover bolts.
4. Remove the UME.