34
Easy Maintenance
3.19
3.18
3.17
3.16
3.15
3.14
3.11a
3.20
3.13
3.21
3.11
3.4
3.12
3.3
3.10
3.10a
3.10a
3.5
3.6
3.22
3.10
3.24
3.23
3.3
Pump head screws
3.15 Springs
3.4
Housing
3.16 Guide for spring
3.5
Bushing, inlet
3.17 Piston rod
3.6
Bushing, outlet
3.18 Retaining plate
3.10
Check valves, inlet and outlet 3.19 Retaining plate screws
3.10a Distance
holder
3.20 Pressure disc
3.11
Piston seal, high pressure
3.21 O-ring
3.11a Piston seal, low pressure
3.22 Capillary connection
3.12
Seal holder (ceramics)
3.23 Screw connection of backflush
3.13
Pressure plate
3.24 Capillary of backflush
3.14 Spacing bolts
Fig. 26
Explosion view of the pump head
3.4
3.20
3.13
3.12
plane areas
180°
180°
3.11
3.11a
3.4 housing
3.13 pressure
plate
3.11
piston seal
3.11a piston seal
3.12
seal holder (ceramics)
3.20 pressure
disc
Fig. 27
Parts of the opened pump head
SOP 27 Assembling the pump head
All Positions of components refer to Fig. 26 and Fig. 27.
1. Always exchange the piston seals Pos. {3.11} and {3.11a} after
disassembly of the pump head and the O-rings, Pos. {3.21} only if
nescessary.
2. If you have removed the ceramic seal holder out of the housing, replace
them very carefully with the plane sides faced together. Otherwise the
seal holders cannot be replaced without damaging them.