Changing The Diaphragm Cartridge; Changing The Pump Head - Ecolab PDP II Notice Technique

10.3.2

Changing the diaphragm cartridge

Fig. 10.2
Carefully insert new diaphragm cartridge (pos. 2).
Do not damage piston groove ring.
The diaphragm cartridge's return flow connector (pos. 5) must point downwards.
Suspend the pump head and cross tighten the nuts (pos. 2)
(tightening torque 3-4 Nm).
Close venting lever (pos. 4) (turn right with the arrow in the 'up' metering direction).
Check for leaks and, if necessary, make adjustments
(see chapter 10.4, 'Readjusting the venting lever)
10.3.3

Changing the pump head

Fig. 10.3
Fit new pump head and cross tighten with nuts (pos. 1) (tightening torque 3-4 Nm).
Screw in suction valve (pos. 8) and pressure valve (pos. 7) with new O-rings (see chapter
10.3.1, Fig. 10.1, (pos.
NOTE
If necessary, replace clamping ring (see chapter 8.1, Fig. 8.1, pos. 3).
417101420_pneum_II.doc
Pos Description
1 Nuts
2 Diaphragm cartridge
3 Pump head
4 Venting lever
5 Return flow connector
6 Surfaces to clean
Turn venting lever (pos. 4) left.
(Arrow points downwards).
Cross loosen nuts (pos. 1).
Pull off pump head (pos. 3).
Take out diaphragm cartridge (pos. 2).
Clean mounting surfaces (pos. 6) in the pump
head and piston running surfaces.
Pos Description
1 Nuts
2 Diaphragm cartridge
3 Pump head
4 Venting lever
5 Return flow connector
6 Surfaces to clean
7 Pressure valve
8 Suction valve
Dismantle pump head as described at chapter
10.3.2.
Unscrew suction valve (pos. 8) and pressure valve
(pos. 7) with an open-ended spanner (SW22).
Clean diaphragm on mounting surfaces (pos. 6) of
the pump head (pos. 3).
3, 4 and 5 ) and tighten firmly.
- 40 - Rev. 4-07.10