Cosa 9610, Installation, Operation And Maintenance Manual

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INSTALLATION, OPERATION AND MAINTENANCE MANUAL – COSA 9610™
Page 41 of 48
4. PREVENTIVE MAINTENANCE
4.1. W
EEKLY
/ M
ONTHLY
M
AINTENANCE
4.1.1. Compressor (optional)
Checking for moisture. If the indicator on the drier has changed colour from light blue to
lilac or pink, this indicates that the drier is saturated and is not working efficiently. If the
indicator is discoloured, the supplier of the compressor should be contacted.
4.1.2. Filters
4.2. T
HREE
(3) M
ONTH
M
AINTENANCE
4.2.1. Compressor (optional)
Replacement of both filter elements on the before- and after- filter
Disconnect mains voltage with the working switch and make the buffer vessel pressure-less
using the de-aeration/dewatering valve. Both filter housings can now be loosened, after
which the filter elements can be changed.
Replacement of the two intake filters
Disconnect mains supply and dismantle the upper half of the compressor housing, being
careful that the ventilator cable plug does not come loose from the ventilator. Using a
screwdriver, poke the filters out of their rubber seating, after which the new filters can be
pressed into place.
Testing the automatic filter drying unit
Loosen the drainage tap on the underside the stabilisation chamber. If water comes out of
here, the filter drier unit needs to be inspected by the supplier's service engineer.
Checking the safety valve
Draw the pin of the safety valve out a few times.