Boomprime Adjustment (Optional) - Hardi NAVIGATOR 4000 Instruction Book

4 - Sprayer setup

BoomPrime Adjustment (optional)

The BoomPrime system works within a fixed pressure range of around 3 bar, but must be adjusted for the specific spray job
(different choice of nozzles etc.):
1. Unfold the boom and start the PTO.
2. Set pressure SmartValve to "Spraying", suction valve to "Main
tank" and agitation valve to "Agitation".
3. Adjust the spray pressure to what will be used when spraying.
4. Turn the BoomPrime adjuster screw (A) to increase the
BoomPrime pressure to 3 bar or until the nozzles start to leak.
5. If nozzles leak, then lower the BoomPrime pressure by 1 bar on the
adjuster screw (A).
μ
ATTENTION! If not adjusted correctly, nozzles will not close (i.e.
will leak) when the spraying is stopped or it will not prime the
tubes.
The possible priming circulation speed of BoomPrime relies on the non-
drip valves to keep the nozzles closed. If an extended amount circulation
may be necessary, the non-drip valves can be changed to a version with
higher pressure setting (later opening time).
Non-drip valve
Green (standard)
Yellow
44
Open (bar)
0.5
0.7
A