Liquid Controls MA4 Meter - Manual (Page 9)

9
Installation
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
Placing your meter in operation:
Check to determine that all fittings and flanges are tight
and liquid lines are closed.
Open the vapor line to the meter. Using vapor pressure
only, check each joint with a liquid soap solution to see
that no leaks go undetected. When all joints have been
checked, admit liquid SLOWLY to avoid operation on
vapor at speeds greater than the minimum indicated on
the serial number plate and to insure that cover cavities
do not contain vapor which can be compressed. Proper
slow filling can be done by throttling the system with a
valve at the meter OUTLET or by allowing the system to
fill by gravity.
With the valve(s) open between the tank and the meter,
go to the valve located down stream of the meter. Open
the down stream valve slowly until the meter’s register/
counter starts to move. Do not run the meter any faster
than 25% of its maximum rated flow during start-up. Once
the product is flowing out 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.
NOTE: If the valves are not manual, consult the valve
manufacturer for slow flow start-up.
Filling the system with a pump:
Consult the pump manufacturer for proper pump priming.
Once the pump is primed with product, proceed.
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 at a pressure exceeding that
marked 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 indicated maximum.
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. A meter should
never be run beyond the maximum flow rate determined
for that class meter and/or liquid measured.
CAUTION!
Make sure that your pump can operate against a dead
head pressure. If NOT, consult the factory for
assistance.