Maintenance
10.4
Replacing the suction/pressure valve and suction valve cartridge
Personnel:
Protective equipment:
1
2
3
A
4
5
6
7
Fig. 20: Replacing the suction/pressure valve and suction valve cartridge
1
O-Ring hose connection pressure side
2
Pressure valve
3
O-ring: Pump head pressure valve
4
Cartridge suction valve
1.
Remove suction and pressure valve using an open spanner.
2.
Mount all O-rings.
3.
Mount the suction valve cartridge (5 l/h pump heads only) correctly
(valve model V3).
4.
Screw in the new suction and pressure valves in the correct position. (See
Ä 'Install the suction/pressure valve correctly' on page 69 )
Spare parts, see:
Changing the valve cartridge (5l/h only)
When changing the suction valve cartridge, be sure to insert it in the correct
position.
S
Fig. 21: Suction valve cartridge
MAN049656 Ver. 4-03.2025
Mechanic
n
Service personnel
n
Specialist
n
Chemical-resistant protective gloves
n
Protective eyewear
n
1
2
3
A
5
6
7
Ä 'Changing the valve cartridge (5l/h only)' on page 68
Ä Chapter 11.2 'Spare parts' on page 74
1
1
68
1
2
3
A
5
6
7
5
O-ring: Suction valve pump head
6
Suction valve
7
O-Ring hose connection suction side
A
Tightening torques for the pump head screws
Suction valve cartridge
1
Suction side -> suction valve
S