Environnement AS32M, Техническое руководство, Страница: 119 / 186

Duplication prohibited
AS32M
Environnement
S.A
AUGUST 2013
4–15
MAINTENANCE SHEET
MONITOR Serial No.: OPERATION SHEET: 4.3.5
Scope: Maintenance of the KNF pump PAGE: 3/5 Periodicity: 1 year
Date
Diaphragm replacement

Turn the wheel of the eccentric (13) to position the diaphragm (15) to the upper position, so the
diaphragm can be easily grasped by its circumference (17) and turn it counterclockwise to
unscrew it.

The diaphragm is placed on a cupel (18). Remove the washers (19) located between the
diaphragm and the cupel, and the washers (20) located between the cupel and the threading
hole (21).
Note carefully the number of washers at each location because it is critical to
install the same number of washers at the same places during reassembly,

To change the diaphragm (15), put the washers (19) between the diaphragm and the cupel (18)
back in place, and install the diaphragm on the cupel. Put the washers (20) on the external side of
the cupel back in place so they are intercalated between the cupel and the threading hole (21)
upon reassembly.

Completely rescrew the assembly (dia cupel + washers) in the threading hole (21).
(13) eccentric, (15) diaphragm, (17) the user grasps the diaphragm by its circumference, (18) cupel,
(19) washers, (20) washers, (21) threading hole.
Figure 4-7 – Diaphragm replacement
Tools required

Two flat screwdrivers, 1 x 5,5 mm and 0,4 x 2,5 mm

Hexagon socket head wrench, n°3

Maintenance kit of KNF pump. Ref. : V04-0005-A

Cross-tip screwdriver, 4,5 x 75 mm