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GB 08 00 MA
Operation - liquid system
NOTE!
HEREAFTER ADJUSTMENT OF PRESSURE
EQUALISATION WILL ONLY BE NEEDED WHEN:
1. YOU CHANGE TO NOZZLES WITH OTHER CA-
PACITIES
2. THE NOZZLE OUTPUT INCREASES AS THE NOZ-
ZLES WEAR
Operating the control unit while spraying
In order to close the entire boom, switch ON/OFF
A
to
off position. This returns the pump output to the tank
through the return system.
The diaphragm Non-drip valves ensure instantaneous
closing of all nozzles.
In order to close one or more sections of the boom,
switch the relevant distribution valve
V
to off position.
The pressure equalisation ensures that the pressure
does not rise in the sections which are to remain open.
When the sprayer is put aside, the control box and the
multi plug must be protected against moisture and dirt.
A plastic bag may be used to protect the multi plug.
T020-0020
8
T059-0004
F
FF
F
Filter
ilter
ilter
ilter
iltersssss
All filters should always be in use and their function
checked regularly. Pay attention to the correct combina-
tion of filter and mesh size. The mesh size should
always be less than the flow average of the nozzles in
use.
Self-cleaning filter
Function diagram
1. From pump
2. Double filter screen
3. Guide cone
4. To operating unit
5. Exchangeable restrictor
6. Return to tank
7. Screw joint
8. Ball check valve
Ball check valve (8) should normally be open, but can be
closed in situations where return flow is to be avoided.
NOTE!
If ball check valve is closed the self-cleaning
filter is inoperative!
Choice of restrictor
It is important to have a large flow through the filter. This
is achieved by choosing the restrictor size in relation to
the liquid consumption of the spray boom.
4 restrictors are supplied. Use
the green one (largest orifice
A
first).
Hose
N
is removed from the filter.
Be careful not to loose the seal.
The restrictor is placed in the
hose and the hose is mounted
again.
If the required working pressure
cannot be obtained, the restrictor
is too large. Choose a smaller
restrictor. Start with a black one,
then a white and finally a red one.
When cleaning the filter remove hose
N
and the hose at
the safety valve and check there are no residues.