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ALPHA
5. Engage the pump and set the engine at approx.
1500 r.p.m.
6. When rinsing water corresponding to approx. 10
times the spray liquid residue (see paragraph "Tech-
nical Residue") is used, turn back suction valve to-
wards suction from main tank and operate all valves,
so that all hoses and components are rinsed.
7. Turn pressure valve back to EC operating unit and
spray liquid in the field you have just sprayed.
8. Repeat point 3-7 until the rinsing tank is empty.
B
. Rinsing the pump, operating unit, spray lines, etc. in
case you stop spraying before main tank is empty (e.g.
beginning rain etc.).
1. Turn suction valve towards rinsing tank.
2. Turn blue Return valve (if fitted) towards pump suc-
tion line.
3. Engage the pump and spray water from rinsing tank
on the field till all nozzle tubes/nozzles are flushed
with clean water.
4. Disengage pump again.
WARNING! The rinsing nozzles cannot always
guarantee a 100% cleaning of the tank. Always
clean manually with a brush afterwards, espe-
cially if crops sensitive to the chemical just sprayed are
going to be sprayed afterwards!
22
Technical Residue
Inevitably a quantity of spray liquid will remain in the
system, which cannot be sprayed properly on the crop
as the pump takes in air when the tank is about to be
empty.
This Technical Residue is defined as the remaining liq-
uid qty. in the system as the first clear pressure drop on
the pressure gauge is read.
Total residue **)
30 - 55 litre
*) Residue in main tank, possible to dilute with water from
rinsing tank
**) Total residue in tank and spraying circuit on standard
sprayer. Variations due to difference in ground inclination,
hose length etc.
The dilutable residue must be diluted 10 times with
clean water and sprayed to the crop just sprayed before
cleaning the sprayer - See paragraph "Cleaning".
Operation of the tank drain valve
Pull the string at left hand side of the tank to open the
drain valve. The valve is spring-loaded but can be kept
open by pulling the string out and upwards in the V-
shaped slit.
To release and close the drain valve
again pull the string downwards and
the valve will close automatically.
If draining a residue, e.g. liquid ferti-
lizers into a reservoir, a snap coupler
with hose can rapidly be connected
to the drain valve and let out the liq-
uid safely.
WARNING! Note local legislation regarding dumping of
residues and rinsing water.
Rinsing tank, draining
To avoid algae developing in the rinsing tank
always drain the rinsing tank when the sprayer
is not in use for a long period. Remove the clip from the
hose fitting, and pull out the hose to drain the tank.
Dilutable residue *)
7-21 litre
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