Spectra Watermakers Ventura 150T MPC, Installation And Operating Manual

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54
Technical Bulletins
The following pages include Spectra’s most commonly used technical bulletins, covering tests,
adjustments, troubleshooting, and common points of confusion. Many more technical bulle-
tins are available on the Spectra website, www.spectrawatermakers.com.
ACCUMULATOR PRESSURE
Your Spectra watermaker is supplied with a pressure accumulator tank (PL-ACC-TK), which
should be installed in the feed water line between the pre-filters and the Clark Pump.
The purpose of the feed line accumulator is to reduce the spikes in the feed pressure caused
by the cycling of the Clark Pump. If the accumulator is not properly charged it can lead to
problems with the Shurflo Pump pressure cutout switch (see page 58). The accumulator has a
Schrader air valve, like a car tire, which allows the internal air bladder of the accumulator to
be pre-charged. The accumulator should be pumped up to about 65 psi (4.5 bar) for best re-
sults. Add air using a tire pump or air compressor. You can experiment with the exact pressure
that will give the best pulsation dampening on your installation.
Schrader valve
Connections to feed
water hose, between
Shurflo pump and
Clark Pump
Analogue feed pressure
gauge