KNF N 2400.15, Operating And Installation Instructions

Page: 28 / 40

Servicing Diaphragm pump N 2400.15
28 Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18
9.3. Replacing diaphragm and reed valves

Motor disconnected from mains and de-energized.

Pump and motor cooled.

Pump free of dangerous substances.

Tubes/pipes removed from pump’s pneumatic inlet and outlet.
With multi-head pumps, parts of the individual pump heads can be
confused.

Replace diaphragm and reed valves of the individual pump
heads consecutively.
WARNING
Health hazard due to dangerous substances
in the pump!
Depending on the substance transferred, caustic
burns or poisoning are possible.

Wear protective clothing of necessary, e.g. pro-
tective gloves.

Clean pump with suitable measures.
CAUTION
Danger of burns from hot pump parts
The pump head or motor may be hot even after the
pump has been shut off.

Allow the pump to cool after operation.
Spare part* Position** Quantity
Diaphragm (10) 1 (per pump head)
Reed valve (5) 2 (per pump head)
Valve stopper (3) 2 (per pump head)
O-Ring (7) 2 (per pump head)
O-Ring (only .13) (11) 1 (per pump head)
O-Ring (only .13) (12) 1 (per pump head)
Tab. 14 *According to spare parts list, Chapter 11
**According to Fig. 10
Quantity Tools/material
1 Allen key 4 with torque indicator
1 Allen key 6 with torque indicator
1 Philips screwdriver No. 2
1 Adjustable pin-wrench for two-hole nuts, pin dia.
4mm, length of wrench ca. 160 mm (available as
‘wrench for retainer plate’, a KNF accessory, see
Chapter 11.
1 Felt-tip pen
1 Hot air blower
1 Adhesive (Delo ML5249) or comparable product
Tab. 15 *According to accessories list, Chapter 11
Conditions
Information on procedure
Spare parts
Tools and material