TTi’s
OnDeck
™
HandBook
21
Call 1800 816 277
www.tti.com.au
21
Spraying
The following steps are given as a guide for spraying with your field spray unit.
• Before commencing spraying, plan the work effectively to reduce potential
contamination to a minimum.
• Wind Direction and speed must be taken into account when spraying.
• Do not spray if the operator, bystanders, watercourses or any not targeted
vegetation appears to be in danger from spray drift contamination.
• Drift can be reduced by lower nozzle height, lower pressures or by fitting larger
nozzles.
• To commence spraying, squeeze trigger. Release the trigger to stop the spray –
the regulator will automatically allow spray solution to bypass through the return
line and back to the tank.
• Spray at a constant speed (as used during calibration) and shut off the hand
lance trigger at the end of each swath or before changing direction.
Work in parallel lines at the correct spacing when spraying large area – this is better
than moving the hand lance from side to side in a swinging movement which causes
damage by overdosing
Decontamination and Maintenance
After use, the sprayer must be thoroughly decontaminated, inside and outside –
including pump, hoses, boom and hand lance – to avoid damage to crops from
harmful spray residues. Decontamination prevents sprayer corrosion and abrasion.
As a guide follow the decontamination procedure below.
• After spraying, rinse out the tank with several changes of water plus a
recommended cleaning fluid, brushing the inside of the tank.
• The suction filter mounted on the sprayer frame must be cleaned regularly.
Unscrew the filter cover and remove the filter screen and gasket. Soak in clean
water, brushing with a nozzle brush.
• Ensure gasket is in position when re-assembling.
• Ensure that the filter basket strainer is free from chemical residue or debris.
• Nozzles, nozzle filters, nozzle caps and gaskets should be cleaned by soaking in
water, brushing with a nozzle brush and allowed to dry. Never blow through the
nozzles with your mouth nor use wire or pins to clear any blockages.
When storing the unit ensure that it is clean and dry andd store in a well ventilated
area.
