Servicing
Diaphragm pump N 2400.15
30
Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18
5. Carry out steps 3 and 4 for the second pump head.
Changing diaphragm
1. Use a hot-air blower (T= approx. 400°C) to heat the retainer
plate (
10
) for about five minutes until it heats up to approx.
100°C.
2. You must observe the following when removing the retainer
plate:
WARNING
Danger of burns from hot parts
Touching a hot retainer plate or any other hot pump
part can burn your skin.
Wear protective gloves.
Always use a face wrench to remove the retainer
plate.
Always place the retainer plate on a heatproof
surface.
Use the wrench for retainer plate to turn it anti-clockwise and
remove the retainer plate (
10
) from the diaphragm support (
9
).
3. Remove diaphragm (
8
).
4. Only .13:
Remove the O-ring (
12
) from the housing (
13
).
5. Only .13:
Remove the O-ring (
11
) from the diaphragm support (
9
).
6. Inspect all parts for dirt and clean them if necessary.
There might be adhesive residue on the external thread of the
retainer plate and on the internal thread of the diaphragm sup-
port (
9
). Remove any adhesive residue!
Make sure the diaphragm spacer(s) (
15
) do not fall into the
pump housing.
With removal of the diaphragm support (
9
) remove and retain
the diaphragm spacer(s) (
15
).
With reassembly insert the exact number of diaphragm spac-
er(s) (
15
).
7. Turn the fan until the diaphragm support (
9
) is mid-stroke.
8. Place the new diaphragm (
8
) on the diaphragm support (
9
);
For N 2400.15 SPE:
Take care that the beads on the outer and inner edges of the
diaphragm are properly seated in the grooves in housing and
diaphragm support respectively.
9. Only .13:
Fit the new O-ring (
12
) in the housing (
13
).
10. Only .13:
Fit the new O-ring (
11
) in the diaphragm support (
9
).
Содержание N 2400.15
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