Blocking Cancellation; Quick Sinking - Zetor CRYSTAL Series Operator's Manual

Blocking cancellation

When you switch on the electric installation with the key of
the switching box (I), the lifting device remains blocked
electronically - the lifting and lowering function is
deactivated; on the EHR-B control panel the diagnostic
LED (7) and the vibration dampening LED (11) shortly
light up - the system self-test is in progress. The lifting
LED (8) and the lowering LED (9) are off. After a short
time permanent illumination of the diagnostic LED (7)
indicates the state of EHR-B blocking.
If the diagnostic LED (7) is permanently illuminated, the
control circuits are disconnected.
The engine can only be started if the engine (1)
is in position (b).
The EHR-B electro-hydraulic system is only active when
the engine is started.
Activation of the EHR-B system is only possible when the
lubrication indicator has gone off.
The blocking can only be cancelled (system activated)
with the engine running by moving the lifting lever (1) to
position (a) - short-time switching is sufficient.
By moving the lever (1) to position (c) you will bring the
three-point hitch to the position corresponding to the
element setting, i.e. the current position of controls (4), (5),
(6).
After the activation of the system EHR-B first
for safety reasons limits the lifting speed of the
hydraulic arms. When the hydraulic arms first reach
the selected position, this safety limitation is
cancelled and then the lifting speed of the hydraulic
arms is normal.

Quick sinking

Lever (1) in position (d) - free position. You must hold the
lever in this position; after releasing the lever will return to
position (c) - the system works in accordance with the
setting of controls (3), (4), (5) and (6).
ELECTRO-HYDRAULIC SYSTEM
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