6
▪
Remove the center disk from one side using the Accessory
tool (special tool: Part No. 771244). [Fig.5.5]
▪
After the center disk (outside) has been removed, remove
the diaphragm and the center disk (inside).
▪
Remove the center disk and center rod from the opposite
side of the main body.
▪
Fix a double nut to one end of the center rod
and take the diaphragm and center disk off
the opposite end. [Fig.5.6]
Be careful not to scratch or score the center rod.
5.2 Inspection
▪
Diaphragm
If the diaphragm is worn out or damaged, replace it.
New replace just one diaphragm.
Guideline of diaphragm life
CR, NBR, EPDM
10,000,000 cycle
FKM
2,500,000 cycle
PTFE
3,000,000 cycle
TPEE, TPO
15,000,000 cycle
(When used with clean water at room temperature)
▪
Center rod [Fig.5.7]
Measure the diameter, and if it is outside the usable range,
replace the center rod.
Usable range of center rod
Ø
17.9 ~
Ø
18.0 mm
