Sea Recovery SRC Aqua Matic 450-1 Owner's Manual page 184

Aqua Matic 450-1800 Rev. A
Element(s) from prematurely fouling. The System Control Logic will also not allow the System Operating
pressure to exceed 950 PSI. This protects the R.O. Membrane Element(s) and the High Pressure Pump Electric
Motor.
CAUTION: Should the set screws loosen causing the coupler, between the Motor shaft and or the Back Pressure
Regulator shaft, to become loose the Motor and Valve shafts MUST be calibrated and Synchronized prior to
tightening the set screws to the shafts, refer to Section 8 of this Owner's Manual.
Problems & Symptoms appearing and caused by the Automatic Motor Actuated Back Pressure Regulator:
Prior to assuming that the Back Pressure Regulator's Electric Motor Actuator has failed, perform a
Function Test as described in Section 3 of this Owner's Manual.
a. The Operating Pressure is higher than normal when the System is operated in the Automatic mode.
• When the System Feed Water is higher than normal in salinity and/or lower than normal in
temperature the operating pressure will automatically increase in an attempt to produce the specified
amount of Product Water. Pressure will increase until the Product Water flow is achieved or until the
operating pressure reaches 950 PSI.
Solution: The System is programmed to not exceed 950 PSI operating pressure. No correction is
b. The Operating Pressure is lower than normal when the System is operated in the Automatic mode.
• The Product Water Flow reading at the Touch Pad indicates that the System is producing the specified
amount of Product Water. However, the Operating Pressure is lower than normal.
When the System Feed Water is lower than normal in salinity and/or higher than normal in
temperature the operating pressure will automatically decrease to not exceed the specified amount of
product water. Pressure will decrease until the specified product water flow is achieved.
Solution: The System is programmed to not exceed the specified amount of Product Water Flow.
c. The Operating Pressure does not increase when the System is operated or does not decrease when the
System is stopped when operated in the Automatic Mode.
• The Back Pressure Regulator Valve is controlled by a gear motor arrangement. The Valve is coupled
to the gear shaft with a female coupler. The set screws holding the gear shaft or Valve shaft to the
coupler may have become loose. The gear shaft is turning but the valve shaft is not.
When the System Feed Water is lower than normal in salinity and/or higher than normal in
temperature the operating pressure will automatically decrease to not exceed the specified amount of
product water. Pressure will decrease until the specified product water flow is achieved.
Solution: Tighten the set screws to secure the gear shaft and valve shaft to the coupler if they are
c. The gear shaft does not rotate at all.
• The Electric Motor and or gear assembly may not be functioning.
Solution: Refer to Section 8 of this Owner's Manual for Back Pressure Regulator repair.
necessary.
No correction is necessary.
loose.
section 7 page 24 of 41