Taking Into Use; Testing - Happowa Spreader 30 User Manual

5. Taking into use

Connect the hoses between the pump unit and the
suction pipe and between the pump unit and the
nozzles. Mount the anti-drip valve as near the nozzles as
possible. The direction of flow is indicated by the arrow
on the valve frame.
Choose the nozzles according to the amount of litres you
are going to pump. With nozzles too large the flow may
be distributed unevenly which may weaken the power of
the flow. With nozzles too small the counter pressure of
the system increases, and the desired flow level may not
be achieved. The liquid may also disperse into spray that
is easily blown away by the wind.
The acid applicator is equipped with a pressure switch.
If the pressure of the system increases above the set
level, the pressure switch will stop the pump. The default
setting of the pressure switch is 3 bars.
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5.1 Testing

Prior to acid pumping the system must be tested by
pumping clean water through the pump. The testing is
easier to do after the pump has been mounted to the
harvesting machine as the conditions are then similar to
the actual use.
The following should be observed during the pumping
test:
- The operating of the pump
- The operating of the flow sensor
- The evenness of the distribution of the flow from the nozzles
- The durability of the equipment and all the joints
A test run is also recommended prior to the beginning of
the harvest season.
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