Environnement AF22e, Technical Manual, Page: 91 / 118

Duplication prohibited
AF22e
Environnement
S.A
APRIL 2016
4–11
MAINTENANCE SHEET
MONITOR Serial No.: OPERATION SHEET: 4.3.4
Scope: KNF pump maintenance PAGE: 3/5 Frequency: 1 year
Diaphragm replacement:
−
Turn the eccentric wheel (13) to position the diaphragm (15) to the upper position, so the
diaphragm can be easily grasped by its circumference (17), to unscrew turn counter clockwise.
−
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 washer number at each location because it is critical to install the
same washer number at the same location 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. Replace the washers (20) on the external
cupel side so they are correctly in place 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 4–4 – Diaphragm replacement
Date
Tools and parts required
•
Two flat screwdrivers, 1 x 5.5 cm and 0.4 x 2.5 cm
•
Hexagon socket head wrench, n°3
•
KNF pump maintenance kit. Ref.: V04-0005
•
Cross-tip screwdriver, 4.5 x 75 cm