ZF Duoplan 2K800, Руководство по эксплуатации, Страница: 21 / 30

Operating Instructions
2K800/2K801/2K802 Initial Installation
EN 4161.758.103m – 2015-10 21
3.7 Lubrication
3.7.1 Recirculating lubrication
NOTE
The 2K800, 2K801 and 2K802 gearboxes must
always be operated with recirculating lubrication.
In this case, the oil level is not visible in the oil
sight glass.
CAUTION
Before operation for the first time, ensure that
the gearbox oil supply is taken into operation
first. To do this, check the oil level in the
reservoir and, if necessary, top up with oil until
the oil level is no longer below the minimum
mark in the reservoir.
The pump, oil tank and heat exchanger
components must be arranged below the
gearbox oil level. The transmission oil supply
flow must be monitored.
NOTE
After switching off the machine, check that the
oil level in the reservoir does not rise above the
maximum mark.
The centrifugal forces acting on the oil can lead
to insufficient lubrication of the gearing during
continuous direct-drive operation.
Occasionally changing gear (ratio) and then
starting the motor (
n
Mot
= 1000 rpm) supplies oil
to the gearing and prevents one-sided, position-
specific loading of the gearing.
Some applications require a very low operating
temperature level which can be reached by
connecting an adapted gearbox oil supply with
oil cooling. The respective gearbox versions are
prepared accordingly.
The gearbox has different ports and connections
for recirculating lubrication – depending on the
installation position and the operating type – in
order to ensure optimum gearbox cooling without
affecting lubrication.
The diagrams on page 23 show the oil inlet and
outlet points on the gearbox. Please refer to the
relevant installation drawings for precise details.
The following instances are no cause for concern:
 The oil level in the tank falls due to foaming of
the gearbox oil in the gearbox during operation.

An oil-air emulsion is formed in the oil return
and in the tank.
3.7.2 Recirculating lubrication for V1/B5
operation
Refer to chapter 3.7.5 for the position of the oil
inlets and outlets.
Oil inlet quantity:
Inlet 1 : 2.5 l/min.
Inlet 2 : 0.5 l/min.
If the gearbox is installed in vertical position V3,
the gearbox oil can be supplied both radially and
centrally.
The outlet line should be dimensioned so as to
prevent oil return blockages in the gearbox
(D
i
approx. 20 mm).
3.7.3 Recirculating lubrication with heat
exchanger
A heat exchanger is installed in the recirculating
lubrication system to ensure additional tempera-
ture reduction.