25HARDI
®
NAVIGATOR 550M, 800M, 1000M CENTRIFUGAL OPERATOR'S MANUAL
4.9 Adjustment of Constant Pressure
Note: Adjust the constant boom section pressure one section at a time
as follows: (Start with the valve turned closed before adjusting).
1. Shut-off the fi rst boom section valve switch (B) (Fig. 16).
2. Turn the adjusting screw (1) (Fig. 15) until the control unit pressure
gauge (4) (Fig. 15) again shows the same pressure as set in step 6
(Section 4.8). (Turn the screw clockwise for higher pressure, coun-
terclockwise for lower pressure).
3. Turn the boom section valve switch (B) (Fig. 16) back on.
4. Repeat steps 1 through 3 for the remaining boom section valves.
Note: Hereafter adjustment of the constant boom pressure will only
be needed if you change to nozzles with other capacities, but
not required if only changing pressure or application rate using
the same nozzles.
5. Operating the control unit while driving: In order to shut off the entire
boom, turn ON/OFF switch to "Off" position (A) (Fig. 16). This returns all
the pump outputs to the tank through the return system. The diaphragm
antidrip valves ensures instantaneous closing of all noz zles.
In order to shut off one or more sections of the boom, switch one or
more unneeded boom section valves (B) (Fig. 16) to "Off" position. The
constant pressure device ensures that the pressure does not increase
in the sections which are still operating.
In case of electrical failure, it is still possible to manually override all functions
of the operating unit. To operate manually, disconnect the multiplug from
the ESC control box fi rst and operate the handles by hand. It is possible
to change pressure, turn boom sections on or off, or shut off the complete
control unit manually.
IMPORTANT:
When the sprayer is stored, the ESC control box and
the multiplug must be protected against moisture and dirt. A plastic
bag may be used to protect the multiplug. Store the control box in
a clean dry place.
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