WOSm - Installation and operating manual
7
Maintenance
It is rec ommended, that you do a check once per week to evaluate filter element saturation.
To test water quality use test set. Instructions are attached in test set. Filter element must
be replaced when first of the following parameters appears:
4000 operating hours of compressor
[3]
12 months regardless compressor operating hours
All polypropylene filling that is normally white becomes yellow due to adsorbed oil.
During operation coloured area (adsorbed oil) spreads from top of the cartridge to
the bottom.
[3]
At compressor oil carry over 2,5mg/m
3
. Lower/higher oil carry over means proportionally longer/shorter lifetime
(e.g. if
oil carryover is 5mg/m
3
lifetime reduces to 2000 operating hours)
.
Water quality can also be checked with “oil indicating test paper”. For test set please contact us or your local distributor.
To replace filter element follow this steps:
Remove plastic cap from NEW filter element, fill the cartridge with clean water and
close it back with plastic cap.
(Please pay attention to warning specified in
INSTALLATION chapter)
The housing O-ring should also be changed at the same time the filter is changed.
Close condensate inlet or make sure condensate will not be discharged into WOSm
during service.
Unscrew saturated filter element and seal it with enclosed plastic cap.
Clean connection for filter element on cyclonic depressurization chamber.
If necessary clean interior of cyclonic chamber.
Remove plastic cap from NEW filter element and save it for next filter change.
Tighten NEW filter element to cyclonic chamber
Replace old coalescing filter on cyclonic chamber with NEW one.
Open inlet connection and put the unit in the operation.
Warning
Disposal of used filter elements must be carried out in accordance with local regulations
and laws.
