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5.1 Precaution before use
1. Make sure to attach joint and hose to outlet of the product, and lead them to drain ditch.
Do not remove the top of the cap stopper [Pic. 2] when operation.
*Fluid leaks because foreign substance exist on valve disc and seat when elbow cap is loosen,
leakage of liquid to outside from elbow cap may happen. Do not use the product around the place
where leaked liquid can wet another equipment.
*Leakage of liquid result in burns for high-temperature fluid or cause bodily injury or damage to the
property when valve leakage happens.
2. Install the product to a place where check and handle can be done easily in aim of tightening the
elbow cap when leakage happens.
*Leakage of liquid result in burns for high-temperature fluid or cause bodily injury or damage to the
property when valve leakage happens.
3. Install the product vertically to a place where air is easy to accumulate.
*Failure to follow this notice may prevent the product from functioning properly.
4. Before installing the product, remove foreign substance and scale from the piping.
*Failure to follow this notice may prevent the product from functioning properly.
5. As for nominal size 6A and 10A, tighten the product by hand into piping. As for nominal size 15A and
20A, install the product by proper tool like wrench by hexagonal place on the body. And do not
tighten the product excessively.
*Failure to follow this notice may cause deformation of the body and malfunction.
6. Install the product to a place where maintenance and inspection easily.
7. Prevent the product from excess of the pressure e.g. water hammer.
8. When test operation for hot water generator, check there is no leakage by means of inspection of
connection and float vent etc.
9. When leakage of liquid happens because of
foreign substance like dust on the valve disc and
seat, please clean the valve seat (see 5.4
Troubleshooting). As immediate action, remove
top pf the cap and tighten the elbow cap to stop
the leakage. (Pic.2)
Tighten the elbow cap after removing hose. After
tightening please clean valve seat and disc.
5. Maintenance and Inspection
Stopper
Caution
Elbow cap
Pic. 1
Stopper
4
Top of Stopper
Elbow cap
Pic. 2
■EPDT-308■
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