Operating -
Balanced returns / Safety valve
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1/ Set sprayer up for spraying with
your selected jets fitted, the disc set with the appropriate colour
at the top and then switch the sprayer on. |
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5/ If the pressure decreases, turn
the allen screw clockwise until the pressure reaches the original
setting. e.g. 3 bar.
6/ Switch the LH boom section back
on again - the pressure should remain at the original setting. e.g. 3 bar.
7/ Repeat the above procedure with
each boom section in turn until all have been set for your first
nozzle. When you have finished you will find you can have any
combination of sections switched on or off and the pressure will
remain constant.
8/ Fit your next nozzle, rotate the
colour discs so that the new colours are at the top and repeat the
above procedure.
9/ Repeat for each nozzle that you
are going to use.
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Pressure (Safety) relief valve A pressure regulator is fitted on the spray pump to act purely as a safety relief valve. To set it up proceed as follows: 1) When you have finished calibrating the sprayer and setting it up for spraying with the size of jets that you intend to use, switch the sprayer on (with clean water only) and increase the spraying pressure with the electric pressure control to approx. 2 bar (30 psi) above your target spraying pressure. 2) Assuming that you can achieve this pressure (if you can't see 4 below), unscrew the pressure relief valve until the pressure just, and only just starts to drop. The "safety" pressure is then set. |
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3) The pressure can then be reduced again with the electric pressure regulator to your target pressure.
4) If you cannot reach this pressure screw in the pressure relief valve until the pressure increases to your "safety pressure". It is then set and the pressure can be reduced again to your target pressure.