Pump Solutions Group PZiG Series - Manual (Page 28)

27
Maintenance
Replacing the Diaphragm
When fixing the pump head using the head bolts,
tighten the bolts in the order shown below a little at
a time using even force. For example, tightening
will be uneven if the bolts are tightened in the order
1, 3, 5 and 2. This might cause chemicals to leak
from the pump head.
IMPORTANT
1
6
4 2
5
3
1
2
Place so that the groove is facing down.
Diaphragm
Auxiliary ring
Protective diaphragm
6
7
45
45
3
1Remove the six head bolts.
2Remove the pump head.
Removing the Pump Head
3Remove the diaphragm.
Remove the diaphragm by holding its
outer periphery and turning counter-
clockwise.
4Remove the auxiliary ring to
remove the protective diaphragm.
5Replace with a new protective
diaphragm, and set the auxiliary
ring in position.
6Install the new diaphragm. Firmly
turn the diaphragm clockwise as
far as possible.
If the diaphragm is loose, it may con-
tact the pump head and cause a mal-
function or become damaged.
7Install the pump head.
Replacing the Diaphragm/Protective Diaphragm
05-45_PZiG Series(2)English 06.8.4 9:39 AM y [ W 27