Ecolab EcoPro, Operating Instructions Manual

Page: 150 / 550

9.7 Pump head size 5 l/h and 11 l/h
Fig. 21: Replacing the pump head and diaphragm
A Adhesive label: Tightening torque of metering head
screws
1 Cover plate
2 Metering head screws (4 off)
3 Pump head
4 Diaphragm
5 Intermediate plate
6 Protective diaphragms
7 Vent screw
Note the following points during assembly:
– Fit new protective diaphragm in the correct positions.
– Place in the intermediate plate in the correct position.
– Turn the adapter plate clockwise until the diaphragm rupture drain faces
down.
– Mount the pump head and pay attention to the direction of flow
– Hand-tighten the pump head screws and then tighten them cross-wise.
– Prior to start-up and after 24 hours of operation, the metering head screws
must be diagonally tightened diagonally.
– It is not permitted to exceed the tightening torque to avoid damage to the
thread. If the tightening torque is undershot, this can result in leaks.
Tightening torques, see Ä Chapter 13.6 ‘Tightening torques’ on page 78
1. Remove the cover plate (pos. 1) on the metering head
2. Loosen the metering head screws (pos. 2).
3. Remove the pump head (pos. 3).
4. Take out diaphragm (4) and intermediate plate (5).
5. Remove the protective diaphragm (6) from the plunger.
6. Fit new protective diaphragm in the correct positions.
7. Reverse this procedure for re-installation.
Maintenance
58 417102264 Rev. 5-01.2019