Before continuing to the procedures below, it's important to heed the following cautions and warnings.
Dead Head Pressure - Pumps |
Make sure that your pump can operate against a dead-head pressure situation. If not, consult the factory for assistance. |
FIRST - Prime the Pump |
Prime the pump before using it to fill the system. Consult the pump manufacturer for proper pump priming. |
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WARNINGS•NEVER OPERATE THE METER OR SYSTEM WHEN PARTIALLY FILLED WITH LIQUID, OR WITH POCKETS OF COMPRESSED AIR OR VAPOR PRESENT – If these conditions cannot be avoided, air and vapor elimination systems may be required. If you cannot fill the meter slowly by gravity or by using a valve to throttle back the flow, consult the factory. •DO NOT OPERATE THE METER ABOVE THE MAXIMUM PRESSURE LISTED ON THE SERIAL NUMBER PLATE – Under any and all pressure producing circumstances (for instance, thermal expansion and hydraulic shock) the working pressure must not exceed the maximum pressure indicated on the Serial Number Plate. •DO NOT OPERATE THE METER ABOVE THE MAXIMUM FLOWRATE LISTED ON THE SERIAL NUMBER PLATE – If the meter is operated at a rate greater than the maximum recommended GPM, excessive wear and premature failure may occur. •THE METER CAN BE CALIBRATED FOR FLOWS BELOW MINIMUM RATINGS – If the flow remains constant and varies within narrow limits or if the product is viscous, the meter can be calibrated for flows below minimum ratings. If the meter is installed in a custody transfer application (for financial transactions), the flow rate must fall within flow rate range indicated on the serial number plate. A meter should never be run beyond the maximum flow rate determined for that class meter and/or liquid measured. |
Prior to meter start up, use extreme caution and ensure that:
1.The meter is properly secured.
2.All connections are tight.
3.All valves are in the closed position.
Placing the Meter into Operation
When placing your meter in operation, the meter and system must be filled slowly with liquid and be free of air prior to start-up. Extreme care must be taken to avoid damaging the meter during this time. When filling the system with liquid for the first time, gravity filling is the preferred method of filling the system with liquid. Gravity filling uses positive head pressure from product storage above the inlet port of the meter to fill the system. If necessary, systems can be filled with the pump.
This is the Meter start-up procedure:
1.Make sure all valves (upstream and downstream of the meter) in the system are closed.
2.Open the valve located at the storage tank a small amount. Provided there is not a valve between the tank and the meter inlet, the meter’s register/counter will start to move and then stop. If there is another valve between the tank and meter, repeat this process with each valve until the meter is exposed to the liquid.
3.Once you are assured that the meter has registered some volume and stopped, continue to open the tank valve until it is completely open.
4.With the valve(s) open between the tank and the meter, slowly open the downstream valve until the meter’s register/counter starts to move.
5.Do not run the meter any faster than 25% of its rated flow during start-up.
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.
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PRIOR TO METER DISASSEMBLYFailure 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. |