Sigma S2Ba, S2Ca warranty Guideline on Valve Installation

Start-up/Maintenance Dulcodes UV-Desinfektionsanlage

NOTE

The tightening torque of the liquid end screws should be rechecked after 24 hours of operation.

The tightening torques of the liquid end screws should be checked every 3 months for the

PVT material version.

Fig. 12

GUIDELINE ON VALVE INSTALLATION

In the case of suction problems during installation, place the valves on a firm surface and tap the PTFE ball seat disk lightly with a brass rod and a hammer weighing about 300 g. Let the valves operate in the wet state.

approx. 300 g

Brass rod 9 mm diam. x approx. 200 mm

Fig. 13

NOTE

¥If suction problems with the pump or leakage at the overcurrent valve are encountered, first clean the ball and the ball seat disc.

¥For media containing particles larger than 0.3 mm it is absolutely essential to install a filter in the suction line.

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