Adjustments Of Ec Operating Unit - Hardi DEMOUNT Instruction Book

If 2 or more valves are fitted, the arrow must point
towards the optional extra you select. Remaining
handles are turned to "O" (closed). When spraying is to
resume, select the Self-Cleaning Filter/operating unit.
The other handles are turned to "O".
If all the green pressure valves are closed the safety
valve will open inside the tank.
Black suction valves
Turn the handle so the
arrow points towards
the selected optional
equipment. The handle
is turned back when
you want to aspirate
from the main tank.
If 2 valves are fitted, eg. Front Tank and Rinsing Tank,
select optional extra and turn the other valve to "O"
(closed). To resume aspiration from the main tank, the
arrow must point towards the main tank. Remaining
valve must be closed.
Blue return valve
Normally the liquid is directed to the tank return. When
the tank is nearly empty, the handle is turned so the
liquid is directed to the suction side of the pump instead
of the tank return.

Adjustments of EC operating unit

Before spraying the EC operating unit is adjusted using
clean water (without chemicals).
EC operating unit
4
1. Adjustment screw for pressure
equalization
2. Main ON/OFF valve
3. Pressure control valve
4. Distribution valves
5. Pressure agitation valve
EC Remote control box
A.
V.
C.
D.
1. Choose the correct nozzle. TRIPLET nozzle turrets
2. Open or close lever 5 depending on whether pres-
3. Main ON/OFF switch A is set towards green.
4. All distribution valves switches V are set towards
5. Pressure control switch C is activated until emer-
6. Put the tractor in neutral and adjust the P.T.O. and
7. Pressure control switch D is activated till the recom-
ADJUSTMENT OF PRESSURE EQUALIZATION:
8. Close the first distribution valve switch V.
9. Turn the adjusting screw 1 until the pressure gauge
10.Adjust the other sections of the distribution valve in
OPERATING THE CONTROL UNIT WHILE DRIVING:
2
11.To stop the liquid flow to the boom switch ON/OFF A
3
Operating switch for main ON/OFF valve
Operating switch for distribution valves
Pressure control switch (to lower)
Pressure control switch (to raise)
are turned to the suitable nozzle for the spray pur-
pose. Make sure that all nozzles are the same type
and capacity. See "Spray Technique" book.
sure agitation is required. (Remember pressure
agitation takes 5% to 10% of pump output).
green.
gency handle 3, stops rotating (minimum pressure).
thereby the number of revolutions of the pump corre-
sponding to the intended travelling speed.
NOTE: The P.T.O. revolutions must be kept
between 300-600 r/min.
mended pressure is shown on the pressure gauge.
again shows the same pressure.
the same way.
Hereafter adjustment of pressure equalization will
only be needed if you change to nozzles of other
capacities.
to OFF position. This returns the pump output to the
tank through the return system. The diaphragm anti-
drip valves ensure instantaneous closing of all
nozzles.
To stop the liquid flow to one or more boom sections,
switch the relevant distribution valve V to OFF posi-
tion. The pressure equalization ensures that the
pressure does not rise in the sections which are to
remain open.
Demount
9