Horizon Reverse Osmosis Seafari Versatile SFC-1400-2, Owner'S Manual

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HRO
Systems
Horizon
Seafari
Self Contained and Modular Style
E. FLOW METER READINGS:
In diagnosing flow meter readings always correlate the reading with
both the Brine Discharge Flow Meter reading and the Product Water Flow Meter reading. Consider the
Pressure Gauge readings as well. Prior to diagnosing flow meter readings, always check first to ensure that
the pressure gauge readings are normal. The symptoms and causes listed below assume that all pressure
gauge readings are normal.
Brine Discharge Water Flow Meter: At zero system pressure, the Brine Discharge Flow Meter registers
the Feed Water flow through the system. With High Pressure applied, the Brine Discharge Flow Meter
registers the Brine discharge flow, which is feed flow minus the product water being produced.
The High Pressure Pump is a positive displacement pump. It pumps a fixed amount of water unless
there is a problem with the High Pressure Pump itself. Therefore, a drop from normal reading on the
Brine Discharge Flow Meter indicates the High Pressure Pump is not functioning properly.
Brine Discharge Water Flow Meter reading is less than normal and the Product Water Flow
Meter registers flow even with no operating pressure applied to the system:
R.O. Membrane Vessel Assembly is allowing bypassing of Feed Water into the Product
Water.
The R.O. Membrane Element has a cracked product water tube.
A cracked or broken product water tube is caused by a blockage in the Product
Water line. Ensure that there are no blockages, valves or kinks in this line.
The End Cap Product Water O-Ring is cut or worn which allows Feed Water to
enter into the Product Water.
Brine Discharge Water Flow Meter reading is normal with no pressure applied to the system but
as pressure is increased, the Brine Discharge Water Flow Meter drops below normal flow.
High Pressure Pump has a problem within the manifold
Worn Seals are allowing internal bypassing
Broken or stuck valve or valve spring or debris in the valve chamber is allowing internal
bypassing
Brine Discharge Water Flow Meter reading is normal with no pressure applied, but the bobbin is
pulsating up and down and as pressure is applied the pulsation increases.
High Pressure Pump has a broken or stuck valve or valve spring, or debris in one of the
discharge valve chambers, which is causing a valve to not properly seat.
Product Water Flow Meter The Product Water Flow Meter registers the amount of Product
Water being produced by the R.O. Membrane Element. In Sea Water applications the Product Water
Flow Meter does not register until the System Pressure exceeds 420 PSI. Therefore, if full
production registers on the Product Water Flow Meter at or below 420 PSI operating pressure, in full
salinity seawater, this indicates that the R.O. Membrane Vessel Assembly has a problem, such as a
defective O-Ring, defective Membrane Element, broken product water tube, cracked end plug or
damaged High Pressure Vessel.
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