TapFlo Guardian system Mk3.1, Руководство по эксплуатации и техническому обслуживанию

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DEAD-HEAD & STOP (DH&S)
Issue : 020913-B TPUK-GU31X 26
Set point adjustment
The Guardian’s set point must be set to the desired trip pressure.
There are three ways to set the Guardian’s set point;
Representative, Direct or Calculated.
To adjust the set point you will require a small flat bladed screwdriver.
Note : DH&S system functionality relies on the discharge of the pump
exceeding the set point of the Guardian, with a minimum of circa 0.5-1.0 bar.
Representative
This method of set up adjusts the Guardian to the application by creating the
condition in-situ.
1. 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.
2. Turn the air supply on.
3. Press and hold the reset button of the Guardian.
4. The pump should start and the reset button should try to extend, continue
to hold it in.
5. Slowly increase the set point regulator adjustment screw (Fig.GEN-01, 2)
(clockwise) until the reset button stops trying to pop out.
6. Increase the set point regulator clockwise by a further half turn.
7. The Reset button should remain in the in position and the pump can be
started and stopped normally by turning the supply to the Guardian on/off,
however if not (or it stops the pump erratically) increase the set point
regulator adjustment screw (Fig.GEN-01, 2) clockwise in half turn
increments until the pump runs consistently.
8. Test the system operates by starting the pump and creating the dead head
scenario by closing the discharge valve and ensure the Guardian trips. If
not repeat steps 1-7 to check the set point adjustment.
9. The set up is now complete and the system is ready for use.
Direct
This method of set up is used when the set point pressure is known. The
Guardian’s set point is adjusted using an external source to generate the set
point pressure, such as a calibrated air pressure regulator and gauge or a
pressure calibrator. This method requires the Guardian to be removed from its
installed position and the calibration pressure applied directly to the media
connection.
A spare fluid side can be purchased as a test rig, see maintenance section of
this manual.
1. 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