SOLO 433 Hochdruckspritze - Manual (Page 32)

Use of High Pressure Pump
ENGLISH 14
12. Use of High Pressure Pump
12.1 Scope of Application
This high pressure pump is suitable for the
application of approved liquid plant protection
material, pesticides, herbicides and liquid fertilizers
available from authorized trade outlets. We
recommend to only use plant protection chemicals
which have been approved by your local, regional,
state or federal authorities. In Germany, the
Federal Institute for Biology (BBA) is responsible
for the approval of plant protection chemicals.
The areas of application for this high pressure
pump are agriculture, viticulture and horticulture.
The machine is not to be used in windy and rainy
conditions to prevent the spread of the spray
material over a large area.
Check the wind direction prior to commencing
work.
Never spray towards open doors, windows, cars,
animals, children or anything that may be
damaged by chemicals.
Exercise extreme caution while spraying.
Generally there is less wind and air movement
during early morning and early evening hours. It is
recommended to spray during that time. Only wet
those plants and objects which are targeted. In
any case we recommend caution during the spray
operation
12.2 Pressure Regulation
A certain spray pressure has to be maintained
depending on nozzle adjustment, nozzle type, type
of spray chemical, walking speed etc. The
pressure should be even and continuous. A
pressure gauge (16) fitted to the trigger handle
(15) indicates the pressure in the liquid delivery
system.
Note: The pressure gauge only shows the
pressure while liquid is flowing through the
pressure handle during actual spray operation
(schematic diagram / depending on the version)
Spray pressure can be altered by:
a) Changing the engine speed via the throttle
adjustment lever (8)
x Lower engine speed Î lower pressure
For high pressure set the throttle lever to full
throttle. For lower pressure adjust to ¾ throttle.
This will save fuel.
b) Adjustment to Pressure Regulator (10)
x Turn clockwise to the right Î increased
pressure,
x turn anti-clockwise to the left Î lower pressur.
Spray pressure should not exceed 30 bar. (Red
field on pressure gauge).
Hint:
While the engine is running, leave the spray
pressure set at low while using the throttle to
achieve the required engine speed. Then turn the
pressure regulator (10) to adjust to the required
pressure. This way the engine does not have to
work against high pump pressure during the
transition from idling speed to operating speed.
Caution:
Avoid clutch slippage. If needed increase the
engine speed with the throttle lever after adjusting
the spray pressure with the pressure regulator.
Never operate the engine for longer periods with
the pressure handle in the CLOSED position. This
applies particularly when high spray pressure has
been selected.
Fig. 10