Horizon Reverse Osmosis Seafari Quest Compact 200 Page 56 Owner'S Manual Download

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Higher-Than-Normal Product Water Flow

Mismatching of system components can cause higher-than-normal product water flow accompanied by increased
operating pressure. The High-Pressure Sensor will eventually signal the system to shut down due to excess
pressure greater than 925 PSI at the Membrane.

A worn or broken product water O-ring at the end plug inside the high-pressure vessel will allow feed water to
bypass into the product water to produce a greater-than-normal amount of product water. The resulting mixture of
product water and feed water will be of low quality, or high in salinity. This will also appear as lower-than-normal
operating pressure at the Membrane Pressure.

A crack in the end plug between the feed water port and product water port or a rough surface at the product water
O-ring will also allow feed water to bypass into the product water causing the product water flow to increase. The
resulting mixture of product water and feed water will be of low quality, or high in salinity. This will also appear as
lower-than-normal operating pressure at the Membrane Pressure.

Higher-than-normal feed water temperature causes the RO membrane to require less operating pressure in order
to maintain the normal product water production. The Seafari Quest System self-adjusts by decreasing the operating
pressure to compensate for higher-than-normal feed water temperature. Product water quality will decrease, or
increase in salinity, as the operating pressure is decreased to compensate for the higher-than-normal feed water
temperature.

Low Product Water Quality (Increased Salt Content in the Product Water)

Mismatching of system components can cause lower-than-normal operating pressure resulting in low-quality
product water. A worn or broken product water O-ring at the end plug inside the high-pressure vessel will allow
feed water to bypass into the product water. The resulting mixture of product water and feed water will be of low
quality, or high in salinity. This will also appear as lower-than-normal operating pressure at the Membrane Pressure.

A crack in the end plug between the feed water port and product water port or a rough surface at the product water
O-ring will also allow feed water to bypass into the product water. The resulting mixture of product water and feed
water will be of low quality, or high in salinity. This will also show up as lower-than-normal operating pressure at
the Membrane Pressure.

A fouled RO Membrane Element will produce poor-quality product water since the RO Membrane Element allows
a constant passage of dissolved solids, salt and other minerals. The water molecules passing through the RO
Membrane Element dilute the constant amount of dissolved solids. Therefore, the greater the amount of water
passage, the lower the concentration, or lower percentage, of dissolved solids. As the RO Membrane Element
becomes fouled, less water passes through it to dilute the constant dissolved solids’ passage. This results in
poor-quality product water. The Seafari Quest System self-adjusts the operating pressure to overcome the fouling.
Eventually the High-Pressure Sensor will signal the system to shut off due to excessive operating pressure above
925 PSI.

If there is a Sulfurous odor (rotten egg smell) in the product tank, check for the following:

1. Dirty Pre-Filtration Element.

• Dirty Pre-Filtration Elements allow biological matter to decay. When this biological matter decomposes, sulfur

gas is released as a byproduct.

• Check and replace as necessary Pre-filtration and Post Filtration Elements.

2. Charcoal Filter Element requires replacement.

• Change the Charcoal Filter Element every 3 months.

3. Product Tank is dirty or has biological growth in it.

• Clean and Chlorinate product tank.

Seafari QUEST 200-600