Grundfos DMH 25X Installatie- En Bedieningsinstructies pagina 37

Zuigermembraandoseer

Verberg thumbnails Zie ook voor DMH 25X:

Advertenties

Beschikbare talen

10.7.7 Cleaning the ball non-return valve

Only clean the ball non-return valve after a

diaphragm breakage!

Fig. 40 Contact pressure gauge

Contact pressure gauge

Contact output

Ball non-return valve

Connection piece

Deaeration screw

Connection for earth cable

or locking unit (instead of contact pressure gauge and

its connection)

Removing the ball non-return valve and contact pressure

1. For pumps and pressure gauges in explosion-proof version,

unscrew the earth cable (4u).

2. Hold the connection piece (U) with a screwdriver and unscrew

the union nut (5u).

3. Unscrew the ball non-return valve (T) from the dosing head.

Cleaning the ball non-return valve

Fig. 41 Ball non-return valve

Ball non-return valve body

Spring sheath

Pressure spring

1. Unscrew the screw part (t6) using round pliers.

2. Clean all parts. Replace faulty parts by new ones.

3. Re-assemble the ball non-return valve.

4. Refit the ball non-return valve (T).

5. Screw the contact pressure gauge (S) and connection piece

(U) back on.

6. For pumps and pressure gauges in explosion-proof version,

screw the earth cable (4u) back on.

Tighten the ball non-return valve and connection

piece by hand only.

Advertenties