Servicing
14
8.3
Changing Diaphragm and Valves
Pump is switched off and mains plug is removed from the
socket
Pump is clean and free of hazardous materials
Tubes removed from pump’s pneumatic inlet and outlet
Spare part/tool
Service Set (according to chapter 10)
Philips-head screwdriver No. 1
Small screwdriver, blade width 0.5 mm
Pencil
Tab. 6
Î
Always replace diaphragm and valve plates/sealings together
to maintain the pump performance.
WARNING
Health hazard due to dangerous substances
in the pump!
Depending on the substance transferred, caustic
burns or poisoning are possible.
Î
Wear protective clothing if necessary, e.g.
protective gloves.
Î
Flush pump before replacing the diaphragm and
valve plates/sealings (see chapter 8.2.1).
Removing pump head
1. Mark the position of head plate (Fig. 7/
3
), intermediate plate
(
2
), cover (
5
) and cover plate (
6
) by a drawing line with a felt-
tip pen. This helps to avoid incorrect assembly later.
2. Undo the 4 screws (
4
) in the head plate (
3
) and lift the head
plate together with intermediate plate (
2
) off the pump housing.
Conditions
Spare parts/Tools
Information on procedure
Fig. 7: Removing pump head
Summary of Contents for Laboport PM26285-811.18
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