Kverneland Electrical Control EC, Operation Manual

Page: 58 / 69

Electrical Control EC
OPERATING INSTRUCTIONS
58
§7.2 H
YDRAULIC FUNCTIONS
The lower field (9) of the control box contains the switches for the hydraulic functions of the spray
boom and the drawbar - or axle steering (fig. 4).
The hydraulic functions are operated by a hydraulic system with pre-selection switching. This
system is characterised by:
- On the tractor side, only 1 single-acting and 1 double-acting hydraulic ventil is necessary.
- With the single-acting hydraulic ventil the height adjustment of the spray boom is performed.
- All the double-acting hydraulic functions are pre-selected via the corresponding toggle switch
on the control box (Switch field 9)(fig. 4) and implemented via a double-acting control
appliance on the tractor.
- The direction of operation of the hydraulic ventil decides on the direction of operation of the
function implemented.
Procedure for control:
•
To operate a function, push the corresponding toggle switch upwards, the corresponding pair of
solenoid valves (10) (or solenoid valve for some types of spray booms) on the spray boom is
opened (fig. 5).
Attention: In order to avoid damage to the spray boom, only activate one function at a time,
i.e. the remaining toggle switches must be pushed down. In symmetrical functions
such as folding, both sides (right and left) can be activated at the same time as a
rule (not in case of HPT spray boom).
•
To implement the function, operate the double-acting control device in the corresponding
direction until the function has been completely implemented.
•
After this, push the toggle switch down again.