
Installation & Parts ManualMA-4 Positive Displacement Meter forLPG Motor Fuel Dispensers(Single & Dual Meter Versions)www.lcmeter.comInstalla
10WARNINGRelieving Internal PressureAll internal pressure must be relieved to zero pressurebefore disassembly or inspection of the strainer, air elimi
11Meter MaintenanceExamine all fasteners. Make sure fasteners are not bent,rusted, or have pulled threads. The threads should allappear evenly placed.
12Pulse Output Device (POD5)The Liquid Controls Pulse Output Device (POD) convertsthe rotary motion of the Positive Displacement Meter intoelectronic
13Pulse Output Device (POD5)Service InformationDue to the simplicity of the POD5, there are few thingsthat can go wrong with the device. However, as
14Pulse Output Device (POD5)SpecificationsSPECIFICATIONS:Voltage Supply: ... (V+): 5VDCCurrent Supply: ...
15Vapor Eliminator & Strainer MaintenanceServicing of the vapor eliminator and strainer involvesoccasional cleaning of the strainer, or, when requ
16Vapor Eliminator & Strainer Maintenance5. Inspect the vapor eliminator cover O-Ring and O-Ring groove. The groove in which the O-Ring islocated
17Differential Valve MaintenanceFaulty operation of the differential valve may be causedby defective valve seals, the spring, or the diaphragm.The dia
18Disassembling the MeterRotor Gear Wrench or SocketBearing Plate Wrench or SocketCounter Bracket Wrench or SocketDrain Plug Allen WrenchCover Socket
19Disassembling the Meter4. Hold a spare displacement rotor gear between theright displacement rotor gear and the blocking rotorgear to keep them from
2Table of ContentsDescription Page NumberSafety Precautions ...2How LC Meters Work ...
20Removing the Non-Corroded Rotor Gears7. If the Gears show signs of corrosion, use thealternative method describe on Page 21, “RemovingCorroded Rotor
21Removing Corroded Rotor Gears1. Replace all three rotor gear screws, without washers,halfway onto each of the rotor ends.2. On the back of the meter
22Reassembling the MeterTools: Cover socket or open end/box end wrenchSpare displacement rotor gearRotor gear wrench or socketBearing Plate wrench or
234. The rotors should have a small amount of end-playand be easy to turn. Test each rotor one at a time.Turn the rotors to make sure that they revolv
24Timing the Rotor GearsRotor gears are timed by lining up the timing marks(circled in illustration). The blocking rotor gear has atooth directly in
25Torque ChartWrench and Socket Size ChartNOTE: Prior to installation, apply a small amount of Locquic Primer N764 to each screw. Apply a light coat
26Troubleshooting!!!!! WARNINGAll internal pressures must be relieved before disassembly or inspection of the strainer, air eliminator, any valves in
271. Refer to the exploded view drawings on Pages 28-31. Find the four digit item number for the part youwant to order. The item numbers are listed
28Meter Assembly Exploded View
29Strainer Assembly Exploded ViewNOTE:• Assembly shown is for systems that use Electronic Temperature Volume Compensation (ETVC). Systemswithout ETVC
3How LC Meters WorkLiquid Controls meters are positive displacement meters.They are designed for liquid measurement in bothcustody transfer and proces
30Differential Valve Exploded View
31WARNING:When a Back Check Valve is used, an automatic safetyvalve must be installed to prevent pressure build-up inexcess of rated working pressure
© 2006 Liquid ControlsPub. No. 500218(02/06)A Unit of IDEX Corporation105 Albrecht DriveLake Bluff, IL 60044-22421.800.458.5262 • 847.295.1050Fax: 8
4Owner’s Information PacketIs all your documentation included with your meter? LCmeters come in many variations. The information sent toyou depends o
5• The meter must always be securely bolted to aplatform or supporting member, regardless of themounting position of the meter. Never “hang” a metero
6InstallationMounting Dimensions - Single MeterNOTE: Always request up-to-date engineering approved dimensional drawings before starting any construct
7NOTE: Always request up-to-date engineering approved dimensional drawings before starting any construction. Donot rely on catalog pictures or drawing
8InstallationThe Liquid Controls MA-4 LPG Meter combines a positivedisplacement meter, differential valve, strainer, and vaporeliminator in one assemb
9InstallationMeter Start-up and OperationPrior to meter start up, use extreme caution. Make surethat:1. The meter is properly secured2. All connection
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