Spectra Watermakers Catalina 340 Z, Installation And Operating Manual

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DISABLE PRESSURE: THIS IS A SAFETY SHUTDOWN. SELECT NO. Select YES only if you are
getting a FALSE “High Pressure” alarm.
DISABLE SALINITY: Factor default is NO. This function allows you to run the watermaker in
the event of a salinity probe, probe cable, or salinity sensing circuit failure. If you get a
“Salinity Probe Failed” alarm or the salinity reading cannot be properly calibrated using the
Salinity Cal function, select YES to continue making water. WARNING: When ”YES” is selected
the diversion valve will be energized whenever the watermaker is running and all product
water will be sent to the vessel’s water tank regardless of its quality. Before disabling the
Salinity Probe, test the product water carefully and regularly.
Note: As long as any of the above functions are disabled, the red LED next to the Alarm/Displ
button will flash.
PPM THRESHOLD: Set this parameter to the desired salinity level to reject the product wa-
ter. The diversion valve will send water to the water tank when the product parts per million is
lower than this set point and reject the product overboard when the salinity is higher than the
set point. Factory default setting is 748 PPM.
PRESSURE LIMIT: If the pressure at the feed pump discharge exceeds this set point the unit
will shut down and alarm “High Pressure.” The left hand number on the display is the real time
feed pressure, as read by the sensor (marked red) on the feed pump output. The number on
the right is the high pressure limit. Factory default for the Catalina models is 125 PSI.
LOW VACUUM LIMIT: Set point for the maximum allowable pressure drop through the pre-
filter. If the inlet pressure reading drops below this point the unit will alarm “Service Prefilter”
and shut down. This set point is in absolute pressure, and determines the “Replace” end of the
Prefilter Condition bar graph. In most cases this parameter should be set to 10.
FLOW CONSTANT: The flow constant calibrates the product flow reading. The number on the
left is the real time flow reading and the number on the right is the flow constant. The flow
constant is set by selecting the desired digit to be changed by pushing the Stop button until
the digit to be changed is flashing. Push Auto Run to decrease the value or Auto Store to in-
crease the value. Then select the next digit to be changed with the Stop button. The flow con-
stant is most easily adjusted with the watermaker running with the switch on the control box
set to Run Manual. Measure the product flow using a graduated container and a stop watch.
Adjust the flow constant until the flow reading matches the measured flow. The flow reading
is heavily dampened and will take some time to stabilize after changes are made to the con-
stant. The factory default setting for Catalina models is 25000.
SALINITY CAL: This window is used to calibrate the salinity sensor. The number on the left is
the real time salinity reading and the number on the right is the calibration setting. Increase
the setting to raise the reading. The factory default setting for Catalina models is 60. See Salini-
ty Probe Calibration on page 77 for details.