52
OPERATION AND ADJUSTMENTS
BEFORE CALIBRATING THE SPRAYER BE SURE:
- suction filter is clean.
- hoses are not twisted or bored.
- pressure regulator components (valve seat, valve and spring) are not worn or dirty.
- pump is properly lubricated (oil level and grease) and has no leakage.
- nozzles are of the same model, not worn, with correct flow rate and with clean strainers.
AFTER CHECKING, PROCEED TO CALIBRATE AS FOLLOWS
1 - Mark off 50 meters or 164.04 ft on the ground to be sprayer.
2 - Fill up the sprayer.
3 - Choose the working gear.
4 - Engage the PTO.
5 - Accelerate until reaching 540 rpm at the PTO.
CALIBRATING THE SPRAYER WITH THE CALIBRATOR BOTTLE
6 - Start moving at least 5 meters or 16.40 ft before the initial mark.
7 -Note the time it takes the tractor to move 50 meters or 164.04 ft.
8 - On irregular ground, repeat this operation several times and take the average.
9 - Stop the tractor with the acceleration used to move the 50 meters, open the nozzles and
adjust the pressure according to directions for the different types of nozzles:
- Cone nozzles : from 45 to 200 psi
- Flat fan nozzles : from 15 to 60 psi
10 - Use the calibrator bottle to collect the nozzle spray volume during the same time taken to
move the 50 meters or 164.04 ft, and read on the column corresponding to the nozzle spacing.
12 -The average obtained will be the spray volume for the gear and pressure already determined.
NOTE: 1- If the spray volume obtained is below that wished, increase the pressure, decrease the
speed (but keep 540 rpm at PTO) or replace the nozzles by others of higher flow rate.
2- If the spray volume is above that wished, decrease the pressure, increase the speed
(but keep 540 rpm at PTO) or replace the nozzles by others of lower flow rate.
42.79 gpa
0.26 gallon
53.50 gpa
0.08 gallon
12.83 gpa
16.04 gpa
0 gallon
0
0
15.74 in
Volume in gallon
20 in
Nozzle spacing
11 - Repeat this operation with several nozzles to obtain an average volume.