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Page 8
Start up Recommendations
Start-up instruction for new installations or after maintenance and repairs:
1) Only properly trained personal should design, install, or operate metering system.
2) Remove plastic threaded plugs placed in meter for shipping protection. They are not to be used in meter system
because of the PVC plugs low rated pressure, compatibility, and sealing issues.
3) Place the meter in an area with ample workspace, secure from vibration, and pipe line stress. Mount and bolt
down on to a fixed stand or platform. This prevents meter stress, which will cause leakage and metal fatigue.
4) Apply thread sealing compound and gasket materials that are compatible with product.
5) Do not weld to meter or accessories. This will weaken housings and cause o-ring and casting leaks and
potentially distort the critical tolerances within the flow meter.
6) Always wear safety protection equipment such as goggles, steel toed shoes, gloves and full body clothing.
7) Be sure to install a pressure relief valve or expansion joint in the system to protect against thermal
expansion.
8) Make sure all system components and meter assembly bolts are properly secured and tightened.
9) Make sure the vapor eliminator vapor release is properly vented and piped back to the supply tank.
10) Make sure electrical connections are properly installed and start/stop switches are off and locked-out.
11) Ensure a flooded suction to the pump so that the system will not starve or cavitate the pump.
12) Ensure slow flooding of system.
Start up system with all shut off valves in the closed position. When a pump
is turned on and a valve opened in a new, dry system, tremendous liquid and air pressure can be built up in the
piping and forced through the meter. The high pressure and volume of air causes the meter to operate more
quickly than normal. When product reaches the meter, there is an abrupt slowing of the meter rotors, which
could cause damage to the register, rotor shafts, packing gear and/or blade, timing gears and other
components.
The recommended method of starting any system is to flood the piping gradually. This allows
product to slowly force the air or vapor from the entire system.
WARNING
Test equipment should be grounded to prevent a possible spark. Test area should have no ignition source. Operators should
wear personal protection and prevent any product exposure and environmental issues.
13) When operating the meter with accessories, valves should be opened slowly to avoid a pressure surge that can
damage the meter or air eliminator. System pressures should be maintained below 350 PSI (24 BAR).
14) Custody transfer metering systems must be calibrated by a regulatory agency before product can be sold off
the meter. Contact your local authorities for proper calibration.
15) Strainers should be cleaned frequently or have a maintenance schedule. This will ensure a clean system and
long service life.
Содержание 700-LP Series
Страница 10: ...Page 10 Meter Dimensions in Inches Millimeters...
Страница 14: ...Page 14 700 20 LP Meter Assembly...
Страница 16: ...Page 16 730 20 LP Vapor Eliminator Assembly...
Страница 18: ...Page 18 720 20 LP Strainer Assembly...
Страница 20: ...Page 20 757 20 LP Differential Valve Assembly...
Страница 22: ...Page 22 782 20 LP In Line Check Assembly...
Страница 45: ...Page 45 Page 45 NOTES...
Страница 46: ...Page 46 Page 46 NOTES...