Zetor 86 41 forterra turbo, Operator'S Manual

Page: 128 / 257

128
ELECTRO-HYDRAULIC SYSTEM
F_02_164 F_02_163
ELIMINATING THE BLOCKING SYSTEM
After turning on the electrical installation
by a key switch (I) the lifting system is
still electronically blocked – it neither
lowers nor lifts. The diagnostic LED di-
ode (7) and LED diode of swing com-
pensator (11) shortly lights – the auto-
test of the system runs. LED of lifting (8)
and LED of lowering (9) is off. After a
short time the status of EHR-B blocking
is signalized by a permanent light of the
diagnostic LED diode (7). If the diagnos-
tic LED diode (7) lights permanently so
the regulation circuits are disconnected.
Starting the engine is possible
only with the lever (1) in posi-
tion
" b " .
Electro-hydraulics EHR-B is working with
the running engine only.
System of EHR-B can be activated only
after turning off the engine lubrication in-
dicator lamp.
Eliminating the blocking system (system
activation) can be turned off only with
running engine by turning the lifting lever
(1) to position "a" – shortly is sufficient.
By turning the lever (1) to position (c) the
three point hitch moves into the position
which corresponds to the settled com-
ponents, i.e. according to the momental
position of controls (4), (5) and (6).
After activation of system the hy-
draulic EHR-B first limits the
speed of arm lifting from the
safety point of view.
After the first reaching the cho-
sen position of hydraulic arms
this safety limit is eliminated. Af-
terwards the hydraulic arm speed
is normal.