GB 10395.6-2006Tractors and machinery for agriculture and forestry - Technical means for ensuring safety - Part 6: Equipment for crop protection (English PDF)

4.2.1 Make sure that the liquid tank lid does not occur accidental loosening or opening.

The liquid discharged from the liquid tank shall always be under the operator's control.

When the operator fills the liquid tank, it shall be able to directly see the liquid level

indication or the liquid level position.

4.2.2 The rated capacity and the diameter of the filling hole of liquid tanks shall comply

with GB/T 18678.

4.2.3 A filter shall be set at the filling hole. For compression sprayers that the filter can

not be set due to structural restrictions, it shall ensure that there are at least two grades

of filtrations.

4.2.4 Liquid tanks bearing pressure shall be set a device making the pressure drop to

a safe pressure value in the event of failure.

4.2.5 Liquid tanks shall be capable of being conveniently and safely drained without

using tools and contaminating the operator.

4.2.6 Sprayers of liquid tanks with a rated capacity greater than 800 L shall be

equipped with a device for adding chemical liquids (such as pesticides) so that the

chemical liquids do not need to be filled manually through the filling hole of liquid tanks.

4.2.7 The tightness of backpack sprayer's liquid tank assembly shall meet the following

requirements. after maintaining for 1 min at the pressure of 0.01 MPa, the liquid tank

assembly shall be no leakage.

4.2.8 Liquid tanks of sprayers shall not leak and rupture after 3 consecutive fall tests.

The temperature of the water during the fall test shall be kept within 20 °C ± 5 °C. The

board is flat and hard and is a square with a side length of 0.9 m and a thickness of

0.05 m.

a) Backpack sprayers. REMOVE the spray parts, air chamber, the lower and upper

fixture rings of the liquid tank and other parts; BLOCK the outlet. FILL the liquid

tank with a rated capacity of water; PUT the bottom of the tank downward

horizontally; MAKE it fall freely from a height of 1 m ± 0.05 m on the board.

b) Compression sprayers. REMOVE parts such as spray parts, straps; INSTALL a

tee at the outlet to inflate and measure the pressure in the liquid tank. FILL the

liquid tank with a rated capacity of water and inflate to the upper limit of working

pressure; PUT the bottom of the tank downward horizontally; MAKE it fall freely

from a height of 0.6 m ± 0.05 m on the board.

NOTE. Appropriate safety measures shall be taken during the test.

4.3 Pressure indicator

chamber is 3 times the maximum working pressure.

4.5 Spray rod and auxiliary device

For filters and all parts contacting with the liquid, the structure shall be such that the

liquid residue is of the least amount, and can be cleaned and drained.

For sprayers with spray rods, it shall not be dangerous for personnel to carry out the

spray operation when folding the spray rod, and shall not create a practical obstacle

to the operator's seat or prevent the operator from approaching the filling hole or any

other positions.

In the course of transport, sprayers with spray rods shall be fixed in a stable and

reliable transport position.

4.5.1 Folding mechanism of spray rod

When turning from the working position to the transport position, or from the transport

position to the working position, it may cause squeezing and cutting hazards.

a) For sprayers that change the position of the spray rod manually or with a

mechanical auxiliary mechanism (such as a spring), a safety protection device

shall be provided at the squeezing and cutting points.

b) For sprayers that change the position of the spray bod with a powered auxiliary

device (such as a hydraulic device), a safety warning mark shall be indicated

near the squeezing and cutting points.

c) The risk of squeezing and cutting shall be stated in the use instructions.

4.5.2 Fan/ventilation device

For fans and ventilation devices, according to the condition of how close the operator

to the air inlet and outlet, a safety distance complying with the specifications of 7.1.5

in GB 10395.1-2001 shall be ensured.

If the above-mentioned safety distance can not be ensured due to structural or other

reasons, to prevent accidental injuries, safety signs must be set close to the inlet and

outlet; this risk shall be stated in the use instructions.

When the fan impeller of backpack sprayers is at full load, carry out to the ultra-speed

test at 1.3 times the calibrated speed, and repeat the test 3 times, each for 5 mm; after

the test, the impeller shall be no damage, looseness, obvious deformation, etc.

4.5.3 Manually operated spray device

Manually operated spray devices, such as spray guns, hand-held spray rods, shall be

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