Maintenance
Stamoclean CAT430
26
Hauser
7.1.3
Evacuating the pump
Air bubbles can occur in the dosing head of the pump after installing a new filter element or in the
event of vacuum pressure as of 0.6 bar (9 psi). The air bubbles have an impact on the filtrate feed
and must be removed.
!
Note!
A large vacuum pressure can be caused by build-up on the filter elements. For this reason, check
and clean the filter elements first, if necessary.
How to vent the diaphragm pump:
1.
Ensure that no damage can arise from filtrate exiting the vent of the control box (
item 3). If necessary, insert a hose, OD 4 mm (0.16 inch), into the vent and guide the other
hose end into a suitable container.
2.
Open the vent screw (item 1) so far that the pump starts feeding.
3.
At the connection box, switch to "Evacuate" (item 2). Run the pump until no more air bubbles
come out of the filtrate line from the filter elements.
4.
Close the vent screw again.
5.
Switch "Evacuate" off.
7.1.4
Replacing filtrate hoses
In the course of a few months a coating builds up in the transparent PVC filtrate hoses in the control
box despite ultra filtration. It is not worth cleaning them. Replace the hoses as described below.
1.
Switch the controller off.
2.
Pull all transparent hoses out of the black PP plug-in connectors, by pressing the retaining ring
of the respective plug-in connector against the pull out direction of the hose into the connector.
3.
Cut hose pieces to the right size, according to the old hoses, out of the 4/2 mm
(0.16/0.08 inch) PVC hose.
4.
Slide the ends of the hose all the way into the plug-in connectors.
When inserting the hoses into the O-ring seals, a pressure point must be overcome.
Should the filtrate hoses become dirty again after a short time, it is possible that a filter element is
defective and must be replaced.
a0007289
Fig. 18:
Venting the pump
1
2
3
Vent screw
"Vent" switch on connection box
Vent
1
2
3
4
5
6
PROG. RESET
1
3
2
