Horizon Reverse Osmosis Seafari Versatile Series, Owner'S Manual

Page: 87 / 209

Seafari Versatile 450 - 1800
Page 7-5
7
hours depending upon age and operating
conditions.
8) Pressure Transducers:
a)
High Pressure Transducer
The High Pressure
Transducer shuts the System down as the
System Pressure into the Back Pressure
Regulator reaches 950 psi ± 50 psi ( 900 to 1000
psi setting is acceptable )
The System shuts down and the Low/
High Pressure Fault Lamp illuminates when
operating pressure does not exceed 900 psi
-
The High Pressure
Transducer
has drifted
from its factory setting and requires
adjustment upward.
The System does not shut down when the
operating pressure applied exceeds 1000 psi.
-
The High-Pressure Transducer has drifted
from its factory setting and requires
adjustment downward.
b)
Low Pressure Transducer
The Low Pressure
Transducer
closes as the Pre-filtration pressure
rises above 6 psi (± 2 psi ) in order to maintain
the System in operation. The Low Pressure
Transducer
shuts the System off as the Pre-
filtration pressure drops, due to dirty Pre-
filtration, below 4 psi (± 2 psi).
NOTE
: To prevent mistaking dirty
Pre-filtration for a malfunctioning Low
Pressure Switch, physically check the
Low Pressure Switch Setting.
In order to check the Low Pressure Switch
Setting:
With the system operating, slowly close
the Inlet Sea Cock Valve. While closing this
valve, view the Low Pressure (LP) Gauge
while simultaneously viewing the LP/HP
Fault Lamp. If the LP
Transducer
is properly
adjusted, the LP/HP Fault Lamp blinks on
and off as the Feed Water Pressure drops to
between 6 to 2 psi. If the LP Fault Lamp blinks
prior to 6 psi, the LP
Transducer
is set too high.
If the LP Fault Lamp blinks only after pressure
drops below 2 psi or does not blink at all, then
the LP
Transducer
is set too low.
Adjust or replace the LP Transducer but first
refer to:
1) System shuts down by itself and a
fault lamp is illuminated :
allowing internal by-passing and requires
replacement.
- There is debris in the valve chamber(s)
causing one or more valve to remain open.
- The Electric Motor RPM is low due to
improper Cycles from the Power Source
to the System.
High Pressure Pump flow is normal (at the
Brine Discharge Flow Meter) when the system
operating pressure is at zero, but the flow
becomes erratic and pulsating as pressure to
the system is applied:
-
Worn or broken High Pressure Pump
Discharge Valves, Discharge Valve seats,
Discharge Valve springs and or debris is
trapped within a High Pressure Pump
Discharge Valve chamber.
High Pressure Pump flow is erratic and
worsens with increased system pressure:
-
Worn or broken High Pressure Pump
Inlet Valves, Inlet Valve seats, Inlet Valve
springs and or debris is trapped within a
High Pressure Pump Inlet Valve chamber.
High Pressure Pump flow is normal when
the system operating pressure is at zero, but
the High Pressure Gauge does not register
pressure as the Back Pressure Regulator Valve
is adjusted. The Feed Water Flow Meter reads
normal and normal Product Water Flow
registers on the Product Water Flow Meter as
the Back Pressure Regulator Valve is adjusted
clockwise:
-
Clean the debris from the High Pressure
Gauge orifice or replace the gauge.
High Pressure Pump leaks oil:
-
Locate the leak source and
repair as required.
High-pressure pump leaks water from between
the manifold and the crankcase housing:
-
Worn inlet packings due to operating the
High Pressure Pump dry or at a vacuum.
- Worn seals from normal wear, or
degraded from age.
- Replace the High and Low Pressure Seals
and associated O-Rings together as a set.
Change these seals every 2,000 - 4,000