Commissioning
6.3
Installation regulations for the hydraulic fan drive connection
The banking-up pressure of 10 bar must not be exceeded. The instal-
lation regulations therefore have to be complied with when connecting
the hydraulic fan connection.
•
Connect the hydraulic coupling of the pressure line (Fig. 101/5)
to a single-acting or double-acting tractor control unit with priori-
ty.
•
Connect the large hydraulic coupling of the return line (Fig.
101/6) only to an unpressurised tractor connection with direct
access to the hydraulic fluid tank (Fig. 101/4).
In order that the banking-up pressure of 10 bar is not exceeded,
do not connect the return line to a tractor control unit.
•
For retro-installation of the tractor return line, use only piping
with ND 16, e.g. 20 id. x 2.0 mm with a short return path to the
hydraulic fluid tank.
To operate all of the hydraulic functions, the capacity of the hydraulic
pump should be at least 80 l/min. at 150 bar.
Fig. 101/...
Fig. 101
(A) On the machine face
(B) On the tractor face
(1) Hydraulic fan motor
N
max.
= 4000 1 rpm
(2) Filter
(3) Single-acting or double-acting control unit
with priority
(4) Hydraulic fluid tank
(5)
Feed line:
pressure line with priority
(marking: 1 cable tie, red)
(6)
Return line:
unpressurised line with "large" push-fit cou-
pling
(marking: 2 cable ties, red)
The hydraulic fluid must not overheat.
High oil flow rates in conjunction with small oil tanks encourage rapid
heating-up of the hydraulic fluid. The capacity of the tractor's oil tank
(Fig. 101/4) should be at least twice the oil flow rate. If the hydraulic
fluid heats up excessively, the installation of an oil cooler is required
at a specialist workshop.
If a second hydraulic motor is driven besides the hydraulic fan motor,
both motors have to be wired in parallel. If both motors are wired in
series, the permissible oil pressure of 10 bar is always exceeded
behind the first motor.
Cirrus BAH0049-1 09.14
101
