Installation and maintenance of water meters

Installation and maintenance:

1.In order to ensure the most accurate measurement, install at least 5 times the straight pipe section with the same section as the pipe before the inlet of the water meter, and install at least 2 times the straight pipe section above the water meter outlet.

2.The connecting pipes upstream and downstream of the water meter can not shrink.

3.It is recommended to install flow control equipment (such as valves) and filters.

4.Flange sealing ring shall not protrude into the pipe or misplace.

5.The water meter must be thoroughly cleaned before installation to avoid debris damage to the meter.

6.The flow direction of the water meter should be consistent with the flow direction of the pipeline.

7.After the installation of the water meter, slowly discharge water filled with pipes to prevent high-speed airflow from breaking the water meter.

8.The installation position ensure that the pipe is full of water, bubbles will not be concentrated in the table, should avoid water meter installation at the highest point of the pipe.

9.Water meters should be protected from water pressure shocks.

10The small diameter rotor type water meter must be installed horizontally, and the front and back or left tilt will lead to a decrease in sensitivity.

11.Water meters are dry and wet. Wet water meter glass under the water, water vapor and other normal phenomena. Due to the old pipe, poor water quality or installed at the end of the pipe, rust pollution will affect the reading.

Common faults and solutions:

Common faults	Common faults	Exclusion methods
Poor sensitivity or water meter	The pipe network is stuck with debris	Installation of filters
	Top loose or water meter overloaded, excessive wear	Remove the starting core and tighten the top. It is strictly forbidden to overload the water meter.
	The gear stuck in the counter	Check whether the gear is broken and whether the gear has burrs or missing teeth.
	Water meter overloaded, moving parts damaged, unable to drive	Remove workbench clean and replace damaged parts or replace workbench.
Surface blackening	Poor water quality, dirt deposition	Install filter screen in front of water meter pipe
	Water contains chemicals that react with ink	Clean surface or restart watch
	The quality of the ink itself is problematic	Check ink
The pointer fell off	The pointer does not fit closely with the gear shaft and the vibration falls off	Remove water meter, install new pointer, correct meter or change meter
	There is no water on the surface. The water hammer acts to wash away the pointer	Open the water meter and fill the glass with water
	Installation is not in place	Remove water meter, new installation pointer,
Word wheels do not carry	Gear, pot bar off gear	Replace counter or replace table
	The bevel drive pinion is stuck