DARLEY PuriFIRE VERSA SEA PAK 200 Owner's Manual page 25

MISC-3 ACCUMULATOR PRESSURE
The Versa Sea Pak is supplied with a pressure accumulator tank, (part no. PL-ACC-TK) to be
installed in the feed water line between the prefilters and the hydraulic intensifier.
The purpose of the feed line accumulator is to reduce the spikes in the feed pressure caused by
the cycling of the hydraulic intensifier. If the accumulator is not properly charged it can lead to
problems with the ShurFlo pump pressure cutout switches. The accumulators have an air valve
on top similar to those found on car tires. This allows the internal air bladder of the accumula-
tor to be pre-charged. The accumulator should be pumped up to about 65 psi (4.5 bar) for best
results. Add air using a tire pump or air compressor. You can experiment with the exact pres-
sure that will give the best pulsation dampening on your installation.
The purpose of the fresh water flush accumulator is to allow a steady flow of 1.5 gallons per
minute of flush water through the charcoal filter. Because the feed pump on the 300 and 400
hundred series exceeds this maximum allowed flow rate, the controller turns it on and off, to
reduce the overall flow rate. The accumulator gives the water flowing through the charcoal fil-
ter somewhere to go while the feed pump is cycled off. The flush water accumulator should be
preloaded to 5 psi (.35 bar).
9/27/04
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