Primeflow - Manual Cleaning; Use Of Detergents; Technical Residue; Using The Drain Valve - Hardi COMMANDER TWIN FORCE Instruction Book

5 - Operation

PrimeFlow - manual cleaning

in the event of a AutoWash failure machines equipped with PrimeFlow can follow the same manual washing procedure as
described in this manual when the following detail is observed:
• Open all nozzles before flushing the boom spray lines to avoid chemical residues from the boom lines are returned
into the main tank.

Use of detergents

It is recommended to use an appropriate cleaning detergent suitable for cleaning agricultural sprayers.
• The cleaning detergents which contains a suitable lube or conditioner is recommended.
• If for some reasons this is not available and e.g. triple ammonia water is used, it is important to rinse the circuit
immediately after and add some lubricant to the rinsing water to avoid e.g. ball valves seizing up.
• Use of automotive antifreeze/radiator coolant (ethylene glycol) will protect the valves, seals etc. from drying or seizing
up.

Technical residue

Inevitably a quantity of spray liquid will remain in the system. It cannot be sprayed properly on the crop, as the pump takes
in air when the tank is about to be empty.
This Technical Residue is defined as the remaining liquid quantity in the system as the first clear pressure drop on the
pressure gauge is read. See "Technical residue" on page 116 for specific technical residues.
The residues in the tank should be diluted immediately in the relationship 1:10 with water and afterwards be sprayed to the
crop just sprayed with increased driving speed. In addition, also pump, linkage and armature can be separately rinsed with
water from the rinsing tank. It is to be made certain however that the liquid in the spray lines are in unchanged
concentration. Therefore there should be an untreated patch available to spray this out.

Using the drain valve

The drain valve is operated from platform just beside the main tank lid.
1. Pull the string to open the drain valve.
2. The valve is spring-loaded, but can be kept open by pulling the
string upwards in the V-shaped slit.
3. To release, pull the string downward and the valve will close
automatically.
If draining residues, e.g. liquid fertilizer into a reservoir, a snap-coupler
with hose can rapidly be connected to the drain valve and the liquid
safely drained.
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