Stepping motor diaphragm metering pump FEM 1.02 / FEM 1.09
Servicing
KNF Flodos AG BA_FEM1-02_1-09_EN_07_157639.docx
Translation of Original Operating and Installation Instructions
22
8.4. Dismantling the pump head
(FEM 1.02 .27 / FEM 1.09 .27 / UFEM 1.09 .27)
WARNING
It must be ensured that the overflow pressure can be
accurately set again after dismantling!
Too much pressure can cause leaks or make the
system rupture!
Not enough pressure can adversely affect the
operation of your system.
Reduce overflow with the aid of the Allen wrench and the open-ended
spanner
Use a screwdriver to undo the head screws (
1
)
Remove the head plate .27 (
2
), the connecting plate (
3
) and the interme-
diate plate (
4
)
Removing the valves and seals
Remove overflow diaphragms .27 (
10
), sliding disk (
11
), support (
12
),
spacer (
13
) and spring (
14
)
Remove valve seats (
5
)
Remove seals (
6
), valve disks (
7
) and O-rings (
8
)
Cleaning the parts
Clean the diaphragms (
9
), the overflow diaphragms .27 (
10
), the valve
disk (
7
), the seals (
6
) and the O-rings (
8
) with a cloth and then blow off
with compressed air
Blow off the intermediate plate (
4
) and the connecting plate (
3
) with com-
pressed air
Mounting the valves and seals
Mount O-rings (
8
) and valve disk (
7
) on valve seat
Insert seal (
6
) and insert valve seat with valve disk and O-rings (
8
) into
connecting plate (
3
) (slight pressure required)
Insert overflow diaphragms .27 (
10
), sliding disk (
11
), support (
12
), spacer
(
13
) and spring (
14
)
Fig. 17: FEM 1.09 .27
head cleaning
1
Head screw
2
Head plate .27
3
Connecting plate
4
Intermediate plate
5
Valve seat
6
Seal
7
Valve disk
8
O-Ring
9
Diaphragm
10
Overflow diaphragm .27
11
Sliding disk
12
Support
13
Spacer
14
Spring
