Rinse Tank

causym CAUTION: The rinse tank must always be filled with clean water.

IMPORTANT: Run the pump at low speed during cleaning operations to save water.

A 400 liter rinse tank (A) is fitted to the front of the machine, left from the solution tank. The tank is equipped with a vent pipe (E).

The filling hole (B) on the left front side is closed by means of cover (D) with 4 vent pipes (E).

The rinse tank must always be filled from the main water supply with clean water in order to avoid contamination.

A non-return valve is fitted in the suction hose to the pump, which ensures that no spraying liquid can be transferred back to the rinse tank.

The four-way valve of the suction unit must be set to "suction from the rinse tank".

The circulation valve is used to determine whether the returned liquid from the spraying pump is pumped to the solution tank or back to the suction side of the pump (circulation).

The tank can be drained by removing the suction hose at position (F).

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A-Rinse tank
B-Filling point
C-Level gauge
D-Cover
E-Vent pipes
F-Drain position

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Dilution of Residual Liquids

IMPORTANT: Dilution of residual liquids on a sprayer with ring line circulation system is explained in "Ring Line Circulation System" in this section.

NOTE: Please refer to recommendation on label of chemical product used for cleaning and operator safety.

In order to avoid draining undiluted residues, the residual liquid must be diluted with water from the rinse tank and then sprayed onto the field.

Dilution of the residual liquid must take place as follows:

  • Close the master shut-off valve, set the four-way valve of the suction unit (A) to "suction of clean water" and set the pressure selection valve (B) to "chemical inductor / rinsing head" in order to close it.
  • Set the circulation valve (C) to "circulation" (E).
  • Run the pump at idle speed.
  • Set the circulation valve (C) temporarily to "return to the tank" (D) so that hose and valve are also flushed.
  • Set the pressure selection valve (B) temporarily to "agitate" so that the agitation line and injectors are also flushed.
  • The inside of the tank can then be cleaned (see "Internal cleaning of the tank" in this section).
  • Set the pressure selection valve (B) to "pressureless filling".
  • Once the residual liquid has been sufficiently diluted (1:10), return the pressure selection valve to "chemical inductor / rinsing head" and set the four-way valve of the suction unit of the spraying pump (A) to "suction of spraying liquid".
  • By opening the main and boom section valves, the diluted residual liquid can now be sprayed over the field at a greater speed and a lower pressure in order to avoid over-dosage.
  • If the optional transfer valve is fitted, this valve needs also to be opened temporarily to rinse the transfer line. This liquid needs to be caught in a bucket.
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A-4-way suction ball valve for spraying pump
B-Pressure selection valve
C-Circulation valve
D-Return pressure regulator to tank
E-Return pressure regulator to suction side of the pump

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Technical Residual Quantity for Trailed Crop Sprayers 724/732/740

Trailed Crop Sprayers 724/732/740
Machine component Technical residual quantity (L)
without ring line system		 Technical residual quantity (L)
with ring line system
  724/732/740
  Dilutable Total Dilutable Total
Basic machine, dilutable 23.05 29.00 29.10 29.10
Spray boom 18/12 m with 6 sections 0.00 17.82 26.13 32.08
Spray boom 20/12 m with 5 sections 0.00 19.33 26.62 34.36
Spray boom 21/12 m with 5 sections 0.00 18.92 27.90 33.72
Spray boom 21/12 m with 7 sections 0.00 23.57 31.25 39.08
Spray boom 24/12 m with 4 sections 0.00 17.31 36.14 44.22
Spray boom 24/12 m with 6 sections 0.00 21.89 36.63 44.49
Spray boom 24/12 m with 8 sections 0.00 25.97 29.56 37.75
Spray boom 28/14 m with 4 sections 0.00 19.27 36.95 45.42
Spray boom 28/14 m with 7 sections 0.00 27.41 35.95 45.89
Spray boom 28/14 m with 8 sections 0.00 28.25 36.14 45.71
         
Spray boom 24/18 m with 8 sections 0.00 25.97 29.56 37.75
Spray boom 27/18 m with 7 sections 0.00 27.35 36.95 45.80
Spray boom 27/21 m with 9 sections 0.00 27.51 37.15 46.02
Spray boom 28/20 m with 7 sections 0.00 27.41 35.95 45.89
         
Max. total residual liquid 57.25 74.99
dilutable 23.05 65.05
undilutable 34.20 9.94
     

 

The slope which the machine may take while still meeting the statutory requirements for residual liquids is:

- cross slope left: 12.5° (22%)
- cross slope right: 12.5° (22%)
- length slope upwards: 12.5° (22%)
- length slope downwards: 12.5° (22%)

 

After treatment of the residual chemicals, it is still essential that the machine be thoroughly cleaned.

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Preparing Small Amounts of Spraying Liquid on the Field

If it becomes apparent during spraying that there is not enough spraying liquid in the tank, an extra amount of spraying liquid can be prepared using the rinse tank.

  • Set the four-way suction valve (A) to "suction of clean water", set the circulation valve to "circulation" and set the pressure selection valve to "pressureless filling".
  • Run the pump at idle speed. The spraying tank will now be (re-)filled with water from the rinse tank.
  • Now add a measured amount of chemicals to the tank. Pay attention to the correct concentration! The empty packaging must be cleaned with the rinse head in the chemical inductor or with the rinse head in the filling opening.
Cleaning the Machine While the Tank is Empty or Full

IMPORTANT: Cleaning the machine while the tank is empty or full on a sprayer with ring line system is described in "Ring Line Circulation System" in this section.

NOTE: Please refer to recommendation on label of chemical product used for cleaning and operator safety.

Rinsing of the machine with an empty tank must be carried out as for dilution of the residual liquids (see "Dilution of residual liquids" in this section). The rinsing water can be drained and collected via the drain valve, as described in "Suction unit" in this section, or preferably sprayed out over the field.

If the tank is still partially filled , the machine can be cleaned as follows (for example upon interruption of the spraying work).

  • Set the four-way suction valve (A) to "suction of clean water", set the circulation valve (C) to "circulation" (E) and set the pressure selection valve (B) to "chemical inductor" in order to close it. This prevents clean water from entering the solution tank and therefore diluting the spraying liquid, while also preventing wastage of clean water.

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  • Turn on the pump at low speed and open the main shut-off valve (and boom section valves) while driving so that the complete pressure hoses, spraying hoses and nozzles are flushed. This prevents deposits in the hoses, which might result in blocked nozzles. Check that the chemical mix in the solution tank can be left without it settling out or decomposing. (See chemical manufacturer's guidelines on label).
Rinsing the Empty Packaging

If the filling water is not externally sucked in via the pump, the empty packaging must be rinsed with clean water from the rinse tank. This can be done using the rinse head in filling opening or in the chemical inductor.

  • Set the four-way suction valve (A) to "suction of clean water", set the circulation valve (C) to "circulation" (E) and set the pressure selection valve (B) to "chemical inductor". Have the pump run on idle speed, so that the rinse tank does not empty too quickly.

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    External Cleaning of the Machine

    External cleaning of the machine must take place in the field in order to avoid discharge of crop protection chemicals into the mains water network or surface water. To wash the sprayer in the field, a spray gun can be connected to connection (A) or a brush with hose reel (C) can be mounted as an accessory connected to connection (B) (see also "Hose Reel with Washing Brush and Spray Gun" in section "Accessories").


    A-Spray gun connection
    B-Connection brush with hose reel
    C-Brush with hose reel

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      Internal Cleaning of the Tank

      Two rotating tank rinsing nozzles (A) have been fitted in the tank for internal cleaning of the solution tank. These allow for internal rinsing of the tank using clean water from the rinse tank. See tank rinsing system in this section.


      A-Rotating tank rinsing nozzle

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