M/MA Meters Liquid Controls Group An IDEX Fluid & Metering Business Installation and Parts M100-10
Table of Contents Introduction Maintenance Safety Procedures..................................................... 3 Owner’s Information Packet...................................... 4 Serial Number Plate Locations.................................. 5 How LC Meters Work................................................ 6 Maintenance Requirements..................................... 12 Relieving Internal Pressure...................................... 13 Servicing the Drive Components...........................
Safety Procedures NOTICE This manual provides warnings and procedures that are intended to inform the owner and/or operator of the hazards present when using the Liquid Controls Meter on LPGas and other products. The reading of these warnings and the avoidance of such hazards is strictly in the hands of the owner-operators of the equipment. Neglect of that responsibility is not within the control of the manufacturer of the meter.
Owner’s Information Packet Inquires, Orders, and Service Please have the following information available when you make inquires, order replacement parts, or schedule service. If a specific meter accessory is involved, please provide the model and serial number of the accessory in question.
Serial Number Plate Locations For components not pictured, refer to the components’ manual if you can not find the Serial Number Plate on the component.
How LC Meters Work Liquid Controls meters are positive displacement meters. They are designed for liquid measurement in both custody transfer and process control applications. They can be installed in pump or gravity flow systems. Because of their simple design, they are easy to maintain, and easy to adapt to a variety of systems. The meter housing (1) is designed with three cylindrical bores (2).
Installation Requirements ▪ Take all necessary safety precautions Make sure that all necessary safety precautions have been taken. Provide for proper ventilation, temperature control, fire prevention, evacuation and fire management. ▪ Provide access for fire extinguishers Provide easy access to the appropriate fire extinguishers for your product. Consult with your local fire department and state and local codes to make sure that you are adequately prepared.
Operation Requirements ▪ The meter must remain full of product at all times. An easy way to accomplish this is to put the meter assembly in the line below the piping center-line (a sumped position). This requires adding elbows and flanges prior to installing the meter. The meter should be installed in a bypass loop, below the pipe center-line, with block valves upstream and downstream of the meter inside the bypass loop. A block valve should be located in the main pipeline and labeled as the bypass valve.
Meter Start Up and Operation Prior to meter start up, use extreme caution. Make sure that: 1. The meter is properly secured 2. All connections are tight 3. All valves are in the closed position Dead Head Pressure - Pumps Make sure that your pump can operate against a dead head pressure. If not, consult the factory for assistance.
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.
Setting the Standard Adjuster To set the standard adjuster: Mechanical Instructions Only 1. Remove the dust cover. See Removing the Dust Cover on page 13. 2. Check meter registration by delivering product to a reliable, accurate prover. Perform multiple delivery tests to verify the meter repeatability. 3. Record the setting indicated on the adjuster: 4. Note the difference between the volume of the prover and the volume indicated on the meter counter.
Maintenance Requirements ! WARNING 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 Safety Rules, refer to local authorities and relevant NFPA Codes.
Servicing the Drive Components ! WARNING Relieving Internal Pressure All internal pressure must be relieved to zero pressure before disassembly or inspection of the strainer, vapor eliminator, any valves in the system, the packing gland, and the front or rear covers. Serious injury or death from fire or explosion could result in performing maintenance on an improperly depressurized and evacuated system. Relieving Internal Pressure Procedure for LPG and NH3 Meters 1.
Servicing the Drive Components Servicing the Adjuster and Adjuster Drive Assembly To remove the adjuster and adjuster drive assembly: 1. Record the adjuster micrometer setting and note the adjuster drive gear position. Reassemble to the Original Position Make sure to return the adjuster drive gear to its original position when reinstalling or the meter counter will run backwards. The gear will be set either below or above the packing gland pinion. 2.
Servicing the Drive Components Servicing the Packing Gland After prolonged use, the packing gland may show leakage from the metering chamber. Leakage is a sign of wear, resulting from the type of product being metered, the operating temperature, and other system conditions. If the packing gland shows leakage, it should be replaced or repaired. The packing gland can be serviced in the field. To remove the packing gland: 1.
Disassembling The Meter Disassembling Mechanical Output Meters 1. Remove the counter bracket screws with a box wrench or socket driver. The counter bracket can be removed with or without removing the adjuster assembly. 2. Turn the meter on either the inlet or outlet side. Let it stand to allow the product to drain from the meter chamber. 3. Locate the drain plugs on the front and rear covers. Remove the drain plugs using an allen wrench.
Disassembling The Meter Disassembling Mechanical Output Meters To remove non-corroded rotor gears: 1. Insert two standard screwdrivers behind the blocking rotor gear: Gently pry the gear off its rotor tapered end. If the gears show signs of corrosion, or do not pry off easily, see To remove corroded rotor gears: below. 2. Use the same method to remove the left rotor gear and the right rotor gear. If the gears show signs of corrosion, or do not pry off easily, see To remove corroded rotor gears: below.
Disassembling The Meter / Reassembling the Meter Disassembling Mechanical Output Meters To remove the bearing plates and rotors: 1. Insert a screwdriver into each of the two notches near the dowel pins. Gently pry the front bearing plate off the dowel pins. Be Careful Be careful not to mar any of the surfaces. 2. Grab the end of the blocking rotor extending out from the front bearing plate, and pull the front bearing plate and rotor assembly straight out from the housing.
Reassembling the Meter Reassembling the Meter To reassemble the bearing plates and rotors: continued from following page 4. The rotors should have a small amount of end-play and be easy to turn. Test each rotor, one at a time. Turn the rotors to make sure that they revolve freely. Jog the rotors from end to end to check for end-play. If they do not move easily in both tests, remove the rotors and check for burrs and corrosion deposits. Clean them thoroughly and repeat steps 2, 3 and 4. 5.
Reassembling the Meter Reassembling the Meter To complete meter reassembly: 1. Push the O-ring (1) into the groove (2) on the front of the meter housing. M-60 and M-80 models use a flat gasket. 2. Fasten the front cover (3) to the housing with the cover screws (4) using the cover socket or open end/box end wrench. Tightening Front and Rear Covers LC recommends tightening the front and rear cover screws in a criss-cross or “star” pattern with a minimum of two passes. First pass should be at half-torque.
Reassembling the Meter TORQUE PATTERN M-7 COVERS Torque Chart Grade 5 Fasteners Bolt Size Foot-Pounds Newton-Meter 2.54 (30.5 in/lb) 3.4 3.75 (45 in/lb) 5.1 NOMINAL* #8 (.164) - 32 UNC-2A #10 (.190) - 24 UNC-2A NOMINAL* 1/4” (.250) - 20 UNC-2A 7.3 9.9 5/16” (.3125) - 18 UNC-2A 15.3 20.7 3/8” (.375) - 16 UNC-2A 27 37 7/16” (.4375) - 14 UNC-2A 43 58 1/2” (.500) - 13 UNC-2A 66 90 5/8” (.625) - 11 UNC-2A 132 179 3/4” (.
Troubleshooting PROBLEM PROBABLE CAUSE & SOLUTION Internal seal of packing gland assembly is worn. Replace packing gland and O-ring seal. OPERATING NOTE Two common causes of packing gland leakage are thermal expansion and hydraulic shock. Thermal expansion can occur when two valves in a piping system, on either side of the meter, are closed at the same time and the temperature in the system rises.
Troubleshooting & Replacement Parts PROBLEM Product flows through meter but register does not record correctly No flow through meter Meter runs too slowly PROBABLE CAUSE & SOLUTION A. Adjuster not properly calibrated. B. Incorrect gear plate or gear ratio has been installed. C. Air is in the system. A. Faulty non-functioning pump. B. Valve not open or not functioning. C. Meter “frozen” due to build-up of chemical “salts” or foreign material inside metering chamber.
Meter components may appear different between models. M5 24 Numbers shown are item numbers, not part numbers. Refer to the Bill of Materials M610 supplied in the red Owner’s Information Packet to locate the part number associated with these item number.
Numbers shown are item numbers, not part numbers. Refer to the Bill of Materials M610 supplied in the red Owner’s Information Packet to locate the part number associated with these item number. Item Numbers and Part Numbers Meter components may appear different between models.
Bill Of Materials M60, M80 Meter Cover Meter components may appear different between models. Item Numbers and Part Numbers Numbers shown are item numbers, not part numbers. Refer to the Bill of Materials M610 supplied in the red Owner’s Information Packet to locate the part number associated with these item number.
Bill Of Materials M60, M80 Meter Element Meter components may appear different between models. Item Numbers and Part Numbers Numbers shown are item numbers, not part numbers. Refer to the Bill of Materials M610 supplied in the red Owner’s Information Packet to locate the part number associated with these item number.
Liquid Controls 105 Albrecht Drive Lake Bluff, IL 60044 (847) 295-1050 Liquid Controls Europe/SAMPI Via Amerigo Vespucci 1 55011 Altopascio (Lucca), Italy +39 0583 24751 IDEX Fluid and Metering Pvt. Ltd. Survey No. 256, Alindra Savli GIDC, Manjusar Dist.
