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WARNING
In hot water systems, even a small amount of water can cause serious personal injury. Use extra
caution when working with hot water meters.
!
CAUTION
The main cause of damage to meters comes from accidentally closing the valve on the sensor
head. To avoid this, gently rotate the meter by twisting the electronics enclosure back and forth
(twist the stem, do not bend it) while you slowly close the valve. If the valve touches any part of
the meter, you will feel it as you are twisting the meter. If the valve touches anything, it means
the meter is not fully withdrawn. Usually a gentle twisting motion while withdrawing the meter
will clear any obstruction and permit the meter to withdraw completely. (Excessive build-up on
the stem may require the hot tap “O” ring to be lubricated with silicone.)
!
WARNING
SYSTEM MAY BE UNDER HIGH PRESSURE. When removing the flow meter, be sure to hold
the electronics enclosure firmly by hand before slowly loosening the positioning clamping
nut. Failure to do this will allow the pressure in the pipe to suddenly and rapidly force the
meter from the pipe causing serious injury. The meter could also be damaged or break apart
causing a break in the water seal with the resultant loss of large amounts of water. The hand
effort required to hold the meter will be 0.11 times the pipe pressure.
!
3.4 REMOVAL OF THE METER
