12
AFTER SPRAYING
1. Dispose of any surplus spray mix ac-
cording to the product approval. Store
products safely, locked up and out of the
reach of children.
2. It is
essential
to clean the sprayer and
bottle or backpack thoroughly using water
and detergent after use.
Never
immerse
the spray head in water or under a tap,
since this will destroy the electric motor.
A water and detergent mix should be put in the bottle, swilled around, and then
sprayed out onto the treated area or an area of waste ground. The sprayer and bottle
should be wiped down externally using a cloth.
3. Periodically remove the atomiser cone housing and remove and clean the atomiser
disc.
To do this first remove the feed nozzle by
pulling it out of the bottom of the atomiser
cone housing (1). Then remove the atomiser
cone housing by rotating it an eighth of a
turn clockwise (as viewed from above) to
unlock the bayonet keyhole fitting (2) and
pull it away from the bottom of the motor
housing (3).
The atomiser disc can be removed from the
atomiser cone housing and cleaned in soapy
water using a soft brush.
9
CALIBRATION
The formula below gives the relationship between swath (i.e. band) width, flow rate,
walking speed and total spray volume:
Flow rate (ml/min) = 6 x total spray volume (l/ha) x walking speed (m/s) x band width (m)
To help calibrate the HERBIFLEX-4 a calculator disc is provided with the sprayer.
This is used as below:
1. Decide the total spray volume application rate to be used. A CDA rate may be in-
dicated on the label of the product. If not, as a general guide, use 10 l/ha (total spray
volume) for glyphosate and 20 l/ha (total spray volume) for other herbicides.
2. Decide the swath (band) width you
wish to use (e.g. 30 cm) and set the angle
of the head accordingly (see 'BEFORE
SPRAYING FOR THE FIRST TIME').
3. On the calculator disc align the swath
(band) width (in cm) with the total vol-
ume application rate (e.g. 20 l/ha) as de-
termined in 1. above.
4. Having fixed the swath (band) width
and volume application rate select the
preferred walking speed (2km/hr = Slow,
3km/hr = Medium, 4 km/hr = Fast) N.B.
1 m/s = 3.6 km/hr.
5. Read off the feed rate required to give
the correct volume application rate. (e.g.
30 ml/min with 30 cm swath (band)
width and walking speed of 3 km/hr to
apply at a volume of 20 l/ha).
Unless using the atomiser cone housing B120 for wider swaths (see 'OPTIONAL
EXTRAS') the flow rate used should not exceed 45 ml/min
