English (GB)
33
10.7.7 Cleaning the ball non-return valve
Fig. 42
Contact pressure gauge
Removing the ball non-return valve and contact pressure
gauge
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. 43
Ball non-return valve
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.
Note
Only clean the ball non-return valve after a
diaphragm breakage!
TM
03
64
53
45
06
Pos.
Components
S
Contact pressure gauge
5s
Union nut
6s
Contact output
T
Ball non-return valve
U
Connection piece
2u
Deaeration screw
3u
O-rings
4u
Connection for earth cable
5u
Union nut
2)
or locking unit (instead of contact pressure gauge and
its connection)
T
5u
4u
3u
2)
U
5s
3u
2u
S
6s
TM
03
64
76
45
06
Pos.
Components
t1
O-ring
t2
Ball non-return valve body
t3
Ball
t4
Spring sheath
t5
Pressure spring
t6
Screw part
t7
O-ring
Caution
Tighten the ball non-return valve and connection
piece by hand only.
t7
t6
t5
t4
t3
t1
t2
t1
