Hardi ZENIT 400, Оригинальная инструкция

Страница: 78 / 118

74
5 - Operation
Adjusting the BK/2 Operating Unit
ATTENTION! It is very important that the operating unit is well
adjusted. Before using the equipment for the first time, it is
necessary to adjust the constant pressure valves at each section
valve.
During this procedure, the individual return capacity of each section
is adjusted, so that it returns the same amount of liquid that would
normally be sprayed through all the nozzles at the section when open.
This avoids variations in pressure when one or both sections are shut.
The adjustment procedure is the following:
1. Open both sections via the lever taps.
2. Set the pressure at, for example, 3 bar.
3. Close one of the Sections.
4. Adjust the constant pressure valve of the closed section valve until the pressure gauge indicates 3 bar again.
5. Open the section valve again and repeat this procedure for the other section valve.
6. Verify the adjustment by opening both sections at the same time or one by one. If the operating unit is correctly
adjusted the pressure always remains unchanged.
ATTENTION! It is recommended to carry out this adjustment as close to the intended working pressure as
possible.
ATTENTION! Carry out this adjustment every so often as somebody may accidentally change the position of the
pressure equalisation valve
ATTENTION! once the pressure adjustment has been performed, it only needs readjustment when:
1. Another nozzle with a different capacity is used.
2. The nozzle output has increased due to wear.
MC/2 operating unit
This high-pressure manual operating unit is used in configurations with
piston or diaphragm pumps.
It consists of a pressure valve with a built-in pressure gauge.
To adjust the pressure, turn the black handle. To increase the pressure,
turn the handle clockwise. To decrease pressure, turn it anti-clockwise.
The spray can be controled from the tractor using the two remote
levers.
Each lever controls one section valve. You can select one section, two
sections or no sections open.
A