Gardner Denver PUREAIR EWC99C, Руководство по эксплуатации и обслуживанию

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Monitoring the water flow
In addition to the water quality, it is important that the filtered water flow be checked monthly:
•
Turn off the isolation valve (pp) on the water tank (nn).
•
If the compressor is not running, just open the filtered water test point (qq), let it run for a few
seconds to depressurize the line, and then time-collect a sample of the steady stream.
Expect to collect between 192 to 247 ml/min of filtered water, depending on the raw feed
water pressure.
•
If the compressor is running, make sure that the fill solenoid valve (tt) does not open during
the collection time, otherwise an erroneously low volume can result.
Filter cartridges.
The operational lives of the sediment and carbon filters elements vary with the quality of the raw feed
water. As a general rule, they should be replaced yearly or whenever the reverse osmosis membrane is
exchanged. Typical signs that these devices are plugging up are a decrease of clean water flow and/or
an increase of chlorine in the clean water (carbon filter upset).
Replacing filter cartridges:
•
Turn off the valve (ff) feeding raw water to the RO system.
•
Open the raw and RO water test drains (gg, qq) to depressurize the water charge from the
reservoir (nn) and lines.
•
Unscrew the filter housing sumps by hand or with the provided spanner wrench – note that
the o-ring may lift out of the housing and stick to the cap.
•
Remove the used cartridges and discard. If signs of fouling are visible, rinse out the
housings and fill 1/3 with water, then add 2-3 tablespoons of bleach, scrub clean with brush
or sponge, and rinse thoroughly with water.
•
Remove o-rings from the housings and wipe groove and o-ring clean. Lubricate o-rings with
a coating of clean petroleum jelly. Place o-rings back into grooves and press with fingers to
seat. If anyone o-ring appears damaged or crimped, replace immediately.
•
Install the new cartridges into sumps making sure that it slips down over the sump
standpipes.
•
Turn the sump into the cap and hand-tighten – do not over-tighten.
•
Close the raw water test point.
•
Open the raw water shutoff valve. After a minute or so, a trickle of water should be coming
from the open RO water test drain, indicating the system is again producing water. Close
now the RO water test drain.
•
The water reservoir, at a minimum raw water pressure of 50 psig, will fill up in about 2 hours.