M & MA Series Meters
18
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6. Once the product is flowing out of the end of your system, the outlet valve can be opened
all the way, provided that the system is designed not to exceed the flow rate marked on
the meter.
PRIOR TO METER DISASSEMBLY
Failure to follow this pre-disassembly procedure could result in property damage,
personal injury, or death.
Before disassembly of any meter or accessory component:
·
All internal pressures must be relieved and all liquid drained from the system in
accordance with all applicable procedures.
·
Pressure must be 0 (zero) psi.
·
Close all liquid and vapor lines between the meter and liquid source.
For applicable safety rules, refer to local authorities and relevant NFPA Codes.
Reversing the Meter Registration
The direction of flow is specified by the customer when the meter is ordered. The standard
direction of flow, facing the front of the meter, from left to right. A red tag labelled “inlet”,
affixed to the meter before shipment, indicates the inlet side of the meter.
If the meter is equipped with a strainer, air eliminator, and/or valve, each component must be
moved to the correct side of the meter when reversing the direction of flow. The strainer and
air eliminator should always be located on the inlet side of the meter. Valves should always be
located on the outlet side of the meter. Some parts of the valve may require repositioning. See
the valve’s manual for more information.
When the meter is first installed, check the register. If the register counts down, meaning that
the register numbers decrease rather than increase, you must reverse the position of the
adjuster drive gear. To reverse the drive to the register, the position of the adjuster drive gear
relative to the pinion gear of the packing gland must be flipped.
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