Badger Meter Recordall Compound Series Meters - Manual (Page 5)

SCOPE OF THE MANUAL
This manual contains information concerning the installation, operation and maintenance of the 8" Badger Meter® Recordall®
Combo Meter Assembly . To ensure efficient operation of the meters, read and understand the instructions in this manual .
Retain the manual in a location where it is readily available .
PRODUCT INFORMATION
Product Description
The 8" Recordall Combo Meter assembly consists of a stainless steel spool with a bypass port, an 8" Recordall Turbo Series
Meter with AWWA class II measuring chamber, a Model DCA-01 Detector Check Valve with bypass piping, valves, and an M120
Recordall Disc Meter . The meter assembly measures both low flow domestic use and high volume use through a single water
supply line .
Turbine Meter
Water flows into the meter's measuring element, contacting the multi-vaned rotor . Flow readings are obtained by rotor
revolutions transmitted by magnetic drive coupling through the meter's cover plate to the sealed register . Magnetic drive
is achieved by a right angle worm drive, coupling the rotor to a vertical transmission spindle, driving a gear set rotating
the magnet carrier . A ceramic magnet in a carrier rotates around a vertical axis . Rotor rotation is transmitted to the register
gearing through this magnetic coupling .
The turbo measuring element is designed to greatly reduce wear by reducing friction potential between the moving parts
of the rotor and bearing system . Less wear, in this critical area of the design, provides the utility manager with a lower
lifecycle cost for meter application . Throughout the normal operating range of the meter, the rotor floats between the thrust
bearing system .
The detector check valve is a spring-loaded check valve on the downstream side of the clapper that holds the clapper in a
normally closed position . Small water flows bypass the clapper and are registered on the 1-1/2" bypass meter . This allows
for accurate registration of domestic use, leakage or misuse of water . When a major flow is required, the water pressure
overcomes the mechanical advantages of the spring-loaded clapper and pushes it open, permitting full pipe capacity flow . A
small amount of water continues to flow through the bypass when the clapper is fully open .
The bypass line consists of piping with a 1-1/2" Model 120 Recordall Disc Meter, an isolation valve, and a check valve .
Related Literature
• The Recordall Combo Meters Product Data Sheet contains information on operating principle, meter construction, materials,
tolerances and specifications .
• The Recordall Combo Meters Parts List contains illustrations of parts, part numbers, and part descriptions .
Safety Information
The installation of the Recordall Combo meter must comply with all applicable federal, state, and local rules, regulations,
and codes .
Failure to read and follow these instructions can lead to misapplication or misuse of the meter, resulting in personal injury and
damage to equipment .
Unpacking and Inspection
To avoid damage in transit, the Recordall Combo meter assemblies are shipped to the customer in special shipping
containers . Upon receipt of shipment, be sure to follow these unpacking and inspection procedures:
NOTE: N If damage to a shipping container is evident upon receipt of a meter, request that a representative of the carrier be
present when the meter is unpacked .
User Manual
Page 5 October 2013