1. Check the condition of the pressure gauge to see if it works normally.

2. Check the pressure value of pressure gauge 1 and 2. When the difference of pressure value between the two pressure gauges exceeds 0.02GP, clean the filter screen. The cleaning method of filter screen is as follows:

(1) Shut off the pump and stop the water.

(2) Rotate the pressing handle, remove the filter cover and take out the filter screen.

(3) Clean the filter screen.

(4) Check the condition of O sealing ring and gasket.

(5) Installation and installation.

(6) Test the boiling water for leakage and observe whether the reading of the pressure gauge is normal.

3, when the winter comes, to drain the filter water, in order to prevent corrosion.

4. Collision and throwing should be avoided in loading, unloading and transportation.

5. Regularly conduct anti-rust treatment on the surface of the filter.