TapFlo Guardian system Mk3.1, Operation & Maintenance Manual

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DRY-RUN & STOP (DR&S)
Issue : 020913-B TPUK-GU31X 20
Set point adjustment
The Guardian’s set point must be set to the optimum trip pressure.
To adjust the set point you will require a small flat bladed screwdriver.
Note : DR&S system functionality relies on the discharge of the pump
exceeding the set point of the Guardian by circa 0.5-1.0 bar.
The optimum recommended set point for DR&S is 0.7 bar.
To set the Guardian’s set point
1. Remove the M5 plug and connect an external pressure gauge with a
range of 0-1 bar, to the ‘set point O/P’ connection .
2. Connect an air supply to air in connection.
3. Plug all other connections, except media and reset I/P.
4. Using a flat bladed screwdriver adjust the set point regulator adjustment
screw (Fig.GEN-01, 2) of the Guardian anti-clockwise until it turns freely.
5. Turn on the air supply.
6. Slowly increase the set point regulator adjustment screw (Fig.GEN-01, 2)
(clockwise) until the pressure gauge indicates desired pressure
(suggested 0.7 Bar).
7. Turn off the air supply.
8. Remove the pressure gauge, and re-install the M5 plug.
9. The set up is now complete and the system is ready for use.
Operation
1. To start the pump, apply compressed air to the pump and Guardian, then
Press and hold the reset button and the pump should start. Once primed
the reset button should stop opposing, and remain in the depressed
position with the pump running.
2. The pump should continue to run until either
•
Air to the pump is interrupted.
•
The pump/Guardian experiences a dry-run condition, which is
represented by the reset button popping out.
3. To stop the pump, interrupt the air to the pump and/or Guardian.
4. To re-start the pump
•
Ensure the pump suction is flooded or immersed.
•
Repeat step 1