Sea Recovery SRC Aqua Matic 450-1 Owner's Manual page 223

WARNING: Over tightening will also cause excessive drag increasing the torque
requirement of the valve's electric motor. Excessive drag resulting in increased
torque requirement will cause the valve motor to draw high current. When the
valve's motor draws high current the system Control Logic will stop the system
and the touch screen will display a SYSTEM FAULT CODE 7 BPR FAULT.
When the actuator motor starts, it momentarily draws high current (this is normal). Once the motor
begins to rotate, with no restrictions, the current lowers to normal running current. The motor, in turn,
rotates the gear box, sensing POT (potentiometer) and valve stem.
If the motor movement is blocked or restricted and does not rotate it will draw high current and the
sensing POT will not rotate. The System Control Logic receives the high current signal and the lack of
sensing POT movement. This results in the stopping of the System and display of "SYSTEM FAULT
CODE 7: BPR FAULT".
Determine what is restricting the movement of the Valve.
Proceed in this order:
a. Check the brass coupling that connects the valve stem and gear box shaft to ensure it allows free
movement and turning.
b. Check for external signs of corrosion or water intrusion into the Actuator housing.
c. Ensure that the Valve Stem packing nut is not over tightened causing friction and resistance.
c. Calibration of the valve stem and motor gear shaft:
either the Electric Motor Actuator Drive Shaft or the Back Pressure Regulator Valve Stem become
loose, or if the Automatic Back Pressure Regulator and Actuator require disassembly they must be
synchronized and calibrated together in the reassembly process.
Within the following procedures the valve stem positioning depends upon which CONTROL VER
your system has. Prior to proceeding, check and make a note of your system's CONTROL VER
which can be located at the SYSTEM INFORMATION Screen:
1 Screen
st
007
Touch the Logo
The Illustrations on the following 3 pages explains the disassembly and re-assembly and
calibration procedures.
2 Screen
nd
044
Touch MENU
section 8 page 21 of 30
CAUTION: Should one of the Couplers attached to
3 Screen
rd
008
Touch
SYSTEM INFO
Aqua Matic 450-1800 Rev. A
4 Screen
th
024
INFORMATION