49
Maintenance
Auxiliary ring
Body
Pump head
Head bolt (cross-recessed machine screws)
Diaphragm
Spacer
Protective
diaphragm
Diaphragm assembly*
Body
Auxiliary ring
Pump head
Diaphragm
Protective diaphragm
Head bolt
(cross-recessed head
hexagon bolts)
Pin
Hole
Diaphragm assembly*
Replacing the diaphragm
IMPORTANT
• When securing the pump head using the head
bolts, tighten them up evenly a little at a time
in the sequence shown in the figure on the
right. If, for instance, the bolts are tightened
up in the sequence of 1
→
3
→
2
→
4, the bolts
will be tightened unevenly, possibly causing
the chemical to leak from the pump head.
1
3
4
2
Removing the diaphragm
(1) Remove the head bolts.
(2) Remove the pump head.
(3) Take hold of the outer circumference part of the diaphragm, and remove the diaphragm while turning it counter-
clockwise.
(4) Remove the auxiliary ring, and remove the protective diaphragm.
✽
In the case of a small type (30R/60R/100R/30/60/100/31/61/12), pull out the spacer from the protective diaphragm.
Small type: 30/60/100/31/61/12
Large type: 300/500
* Consumables that must be replaced at periodic intervals. For further details, refer to the “Consumables” on page 75 to 76.
48-57̲PZD総合取説̲E.indd 49
48-57̲PZD総合取説̲E.indd 49
2010/07/20 17:33:21
2010/07/20 17:33:21
