Maintenance - Rules Of Thumb; Cleaning The Sprayer - Hardi COMMANDER Plus Series Operator's Manual

Calibration / Maintenance
3. Set correct pressure. Read the required pressure
from the nozzle table in the nozzle catalogue or
nozzle wheel. With clean water in the tank and line,
turn on the sprayer and set the target pressure.
Collect the spray from one nozzle for one minute in a
container. Adjust pressure until you collect the
precise GPM called for.
Calibration for carriers other than water
Use the following water rate conversion chart to deter-
mine the right conversion factor. When you've determined
the new converted GPM or GPA, you can follow the steps
on either the pressure or ounce method of calibration.
Weight of solution Specific Gravity Conversion Factors
7.00 lbs/gal.
8.00 lbs/gal.
8.34 lbs/gal-water
9.00 lbs/gal
10.00 lbs/gal
10.65 lbs/gal-28% N
11.00 lbs/gal
12.00 lbs/gal
14.00 lbs/gal
Example: 20 GPA of 28% N
Then GPA (solution) x conversion factor = GPA (water)
20 GPA (28% N) x 1.13 = 22.6 GPA (water)
Calibrate for 22.6 GPA of water
For conversion to Imperial gallons per acre,
multiply U.S. GPA by .833
For conversion to liters per hectare,
multiply U.S. GPA by 9.34
For conversion to liters per acre,
multiply U.S. GPA by 3.78
Formula for tractor speed: Distance (in feet) x .682 = MPH
36
84 .92
96 .98
1.00 1.00
1.08 1.04
1.20 1.10
1.28 1.13
1.32 1.15
1.44 1.20
1.68 1.30
Second
®
HARDI COMMANDER

Maintenance - rules of thumb

In order to derive full benefit from the sprayer for many
years the following service and maintenance program
should be followed.
IMPORTANT! Always clean the boom at the end
of your workday or before servicing is done to
avoid unnecessary contact with chemicals.

Cleaning the sprayer

Guidelines
1. Read the whole chemical label. Take note of any
particular instructions regarding recommended
protective clothing, deactivating agents, etc. Read
the detergent and deactivating agent labels. If
cleaning procedures are given, follow them closely.
2. Be familiar with local legislation regarding disposal of
pesticides washings, mandatory decontamination
methods, etc. Contact the appropriate department,
e.g. Dept. of Agriculture.
3. Pesticide washings can usually be sprayed out on a
soakaway. This is an area of ground that is not used
for cropping. You must avoid seepage or runoff of
residue into streams, water courses, ditches, wells,
springs, etc. The washings from the cleaning area
must not enter sewers. Drainage must lead to an
approved soakaway.
4. Cleaning starts with the calibration, as a well cali-
brated sprayer will ensure the minimal amount of
remaining spray liquid.
5. It is good practice to clean the sprayer immediately
after use and thereby rendering the sprayer safe and
ready for the next pesticide application. This also
prolongs the life of the components.
6. It is sometimes necessary to leave spray liquid in the
tank for short periods, e.g. overnight, or until the
weather becomes suitable for spraying again.
Unauthorized persons and animals must not have
access to the sprayer under these circumstances.
7. If the product applied is corrosive, it is recommended
to coat all metal parts of the sprayer before and after
use with a suitable rust inhibitor.
Remember:
Clean sprayers are safe sprayers.
Clean sprayers are ready for action.
Clean sprayers cannot be damaged by
pesticides and their solvents.
OPERATOR'S MANUAL