SIAM DU-1, Руководство по эксплуатации

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Well sounders «DU-1»
The outer surfaces of pressure sensor are wiped with a clean rag,
wetted in a small amount of gasoline, and then wiped dry.
11.2.2. Exhaust Valve Maintenance
Exhaust valve components are given in the Figure:
:
1 - guide bush;
2 - tappet;
3 - retaining ring;
4 - spring;
5 - sealing ring;
6 - nut;
7 - cone;
8 - housing.
Washing is done with diesel fuel or kerosene, using a brush and a
rag. Before washing, remove the valve from well sounder, put it into a
clean container and pour a small amount of washing liquid. Press the
handle several times without taking the valve out of a container. Clean the