Maintenance - ProMinent DULCODOS universal mini Assembly And Operating Instructions Manual

7.1 Maintenance

Maintenance intervals
Maintenance intervals strongly depend on the feed
chemical, the hydraulic conditions and the effective
run-time of the components. No general statement
on maintenance intervals can therefore be pro‐
vided. The maintenance intervals recommended
and specified in the operating instructions are
based on many years of experience. However, the
maintenance intervals may alter due to the pre‐
vailing operating conditions.
Carry out regular checks on the metering system. Pay attention to
the operating instructions for the components:
Tightness, visible damage and signs of corrosion
n
Check the tightness of the seat of all components of the
n
metering system
Remove deposits of dust and soiling
n
Check the capacities
n
Check the charging pressure of the pulsation damper (bladder
n
damper) – pay particular attention to the filling medium.
Check the settings of the back pressure and relief valves,
n
especially when changing the capacity
Check and maintain the metering pumps in line with the corre‐
n
sponding operating instructions
Check any flow meter equipment and flow displays fitted
n
Regularly replace wear parts, especially in the pump heads. If the
wear parts are not regularly replaced, it can lead to damage or
excessive noise emission levels.
Annually check all fittings for correct function and leak-tightness.
Replace the seals, O-rings, diaphragms or all fittings etc., if
required.
Following any maintenance work, check the functionality and leak-
tightness of the metering system.
Maintenance and Troubleshooting
29