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Via an additional hydraulic accu-
mulator (HP) the hollow discs
(HS) will be lifted and always then
lowered when a marking line
should be made. This will be con-
trolled via the used seed drill con-
trol, which switches if required the
magnet valve (HV) for the oil sup-
ply of the hydraulic rams (HZ).
ATTENTION! From time to time the hydraulic accumulator (HP) must von fil-
led again, and that when the corresponding alarm appears.
For filling the corresponding spool valve must be operated.
Further information can be learned from the corresponding in-
struction book of the electronic seed drill control.
c) Operation without pre-emergence markers
When working without pre-emer-
gence markers, with lifted hollow
discs the electric supply to the ma-
gnet valve (HV) will be interrupted.
Therefore the right plug (Pin 3 and
Pin 4) inside the collecting box must
be pulled out from the plug place
X6.
62
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