Knauer K-120 Handbuch Seite 18

18
3.22
3.6
3.10a
3.10
3.10a
3.3
Fig. 9
Table 3
item
Pump head screws
3.3
Housing
3.4
Bushing, inlet
3.5
Bushing, outlet
3.6
Check valves, inlet and outlet
3.10
Distance holder
3.10a
Piston seal, high pressure
3.11
Piston seal, low pressure
3.11a
Seal holder (ceramics)
3.12
Pressure plate
3.13
Spacing bolts
3.14
9. To remove the piston seals 3.11a , the easiest way is to pull
them out using a 4mm gimlet or a screw of corresponding
diameter.
10. The piston seals 3.11 located in the ceramic seal holder 3.12
are to remove in the same manner.
11. To remove the ceramic seal holders from the housing (not
necessary for exchanging the seals), please follow SOP 12
"Cleaning check valves on page 20 to remove the check
valves 3.10 and the distance holders 3.10a.
12. The ceramic seal holders 3.12 can be removed from the
housing 3.4.
3.21
3.13
3.12
3.11
3.4
3.10
3.5
Explosion view of the pump head
Parts of the pump head
Description
Maintenance by the user
3.23
3.24
3.16
3.15
3.14
3.20
3.11a
item Description
Springs
3.15
Guide for spring
3.16
Piston rod
3.17
Retaining plate
3.18
Retaining plate screws
3.19
Pressure disc
3.20
O-ring
3.21
Capillary connection
3.22
Screw connection of backflush
3.23
Capillary of backflush
3.24
3.19
3.18
3.17