14
Maintenance
14.1 Inspect the powder feeder and wetting apparatus
1.
Inspect the powder feeder regularly during operation to ensure that
it is working correctly
2.
Check that the powdered polymer is being dosed correctly
3.
Check whether the conical wetting area of the wetting cone is com‐
pletely rinsed over with water and that no powder deposits form
14.2 Cleaning the filter insert in the pressure reducer
You must clean the filter insert no later than when 2/3 of the
throughput surface of the screen insert is dirty.
1.
To remove the filter insert, you must place the system in
[Stop]
mode by pressing the
[F1]
key.
2.
Manually close the shut-off valve upstream of the pressure reducer
3.
Details of the subsequent procedure, can be found in the manufac‐
turer's instructions for the pressure reducer.
14.3 Checking and cleaning the solenoid valve
WARNING!
Danger of electric shock!
Possible consequence: Fatal or very serious injuries
The control cabinet must always be closed during operation
The main switch must be set to
‘0’
and secured against
restart before any installation or maintenance work can
begin.
CAUTION!
Possibility of incorrect system operation
–
When handling the solenoid valve always be aware of
the cable
–
When assembling, take note of the correct position and
layout of the parts
NOTICE!
More information
You can find more information and the corresponding
drawing contained in the solenoid valve operating instruc‐
tions in the appendix to this documentation.
1.
Fully close the upstream shut-off valve
2.
Undo the four socket cap screws on the housing and remove the
valve cap together with the rinsing attachment
ð
Look out for the cable.
3.
Remove the inserts
Powder feeder
Wetting equipment
Maintenance
71
