Commercial and lndustrial MACH 10
®
Ultrasonic Meter Installation and Maintenance Guide 33
Chapter 7: Maintenance and Troubleshooting
This chapter provides information for maintaining and troubleshooting the MACH 10
®
meter.
Maintenance
Typically, mechanical meters are subject to wear and are often rebuilt to extend their life. The
electronic MACH 10 meter does not have moving parts and requires no maintenance. The
C&I MACH 10 meter is designed with the electronics, transducers, battery, and display all as
part of a unitized measuring element (UME) which you can replace on the meter without
removing the meter maincase from service, eliminating maintenance time and cost.
Unitized Measuring Element (UME) Maintenance
When maintenance is necessary, you can quickly and easily interchange the complete UME
with a factory-calibrated unit. The UME includes the register, cover, batteries, and
measurement transducers.
Following are the steps to replace the UME.
1. Close all valves (mainline and bypass).
2. Open the bleed screw on top of the meter to vent air.
3. Make sure the meter is depressurized.
4. Remove the cover bolts.
5. Remove the UME from the maincase.
6. Install the factory-calibrated UME into the maincase as shown in the following image.
Figure 15 – Unitized Measuring Element Commercial and Industrial MACH 10
®
Meter
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