Sea Recovery Ultra Whisper Compact 400, Owner'S Manual

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No kinks, blockages or air suction leaks in the inlet line

The Feed Pump is operational and delivering flow and pressure

Whether or not the Inlet Thru-Hull Fitting is clean (no manufacturing or installation debris) and if air suction leaks
are present

Caulking compound within the opening

Shipping cover or tape below the hull in the water

Casting slag on the “fingers” below the hull in the water or with
in the orifice

Plastic bag or other debris in the water below the hull in the water
Error ID 4: Low Voltage Fault
Check system voltage inside the Control Panel. The system must receive adequate voltage at start up and during
operation for normal operation. DC systems will shut down by design when the voltage falls below:

12 VDC Systems: 10.5 VDC

24 VDC Systems: 21.5 VDC
Loud or Whining Pump
Loud or whining pump is common after long use. The cause of the loud noise is a drop motor rpms or cavitation. If the
pump is cavitating, check for clogs, kinks, or dirty sea-strainer. If the noise still persists, check motor supply voltage at
the system source and at the motor. If there is not enough supply voltage, it will cause the motor to run at a lower rpm.
Remaining Pressure in the System After Shut Down
Caution: Do not open pressurized high pressure water lines to relieve pressure in the system. Doing so may
cause bodily injury.

The orifice mounted in the air/oil separator maybe clogged and need to be cleaned or replaced. Debris or
biological matter may be clogging up the orifice hole. Use rubbing alcohol and compressed air to clean the
orifice. After cleaning, if there is degradation (pitting) to the orifice, then replace the orifice (refer to exploded
parts views in chapter 12).

Check all brine line for kinks or blockages. If there is an auxiliary valve on the brine line, make sure it is fully
open. Do not close auxiliary valves until system is done with the freshwater flush.

Make sure the brine discharge thru hull is not shared with any other system on the boat. When the brine
thru hull fitting shared with another system it will restrict the brine discharge causing a slow bleed off of
pressure, this causes pressure to remain in the system longer than it should.

Brine line being used is too small for where the system is mounted on the boat and how long of a brine
discharge line is. The brine line might be too restrictive causing pressure to release at a slow rate.
Stuck or Blocked R.O. Boost

The cause of a stuck R.O. Boost is from numerous factors, remaining pressure, trapped air, debris, or
system installation. The most common is from remaining pressure in the system. When there is pressure
stuck in the R.O Boost after shut down, the pistons in the R.O. Boost start to migrate out its natural timing
sequence. After a long period of time, pressure will relieve through membrane leaving the R.O. Boost stuck
or blocked.
Ultra Whisper 400-600