Visatron 10980, Operating Instructions Manual, Page: 66 / 73

Options
List of Options for VN 93
Description of the Individual Items
Item 1, Protecting cover
(Art. No. 10015)
The protecting cover can easily be mounted on the four provided threads on the base
plate of the VN device. It serves to protect the device against mechanical damage
and contamination.
Item. 2. Pressure regulator unit
(Art. No. 10001)
The pressure reducer unit consists of a pressure reducer and a throttle block.
Both parts are mounted together on a frame which is fastened by 3 screws, M8.
The pressure reducer device is especially designed to supply the draft air to the
VISATRON (VN) device. The throttle block ensures that the negative pressure
in the VN is limited and does not surpass 25% above of the calibrated negative
pressure, should a failure occur in the pressure reducer (e. g. rupture of the
diaphragm, etc.).
In addition, the throttle block is equipped with a filter to retain impurities
from the plant air supply.
Item 3, Siphon block assembly systems (Art. No. depends on the type of engine)
Siphon blocks are devices which enable to drain the accumulated oil, from the oil
mist suction pipes, directly back to the engine crankcase. The siphon blocks allow
a horizontal suction pipe installation, from compartment to compartment. For
consultation, please contact our service department.
Conventional suction pipe systems, without siphon blocks, require to be installed with
a gradient of 2% to 4% ascending to the VN device, in order to drain the precipitated
oil back to the engine.
It is imperative to drain the oil to the crankcase and avoid potential clogging.
Special engine-oriented assembly systems in modular design are available for
VISATRON Oil Mist Detectors for a large number of two- and four- stroke engine
types, of various manufacturers.
9. 01
Operating Instruction Visatron VN 93
06. 04
xx
As an option, the following accessories can be supplied for
the oil mist detectors of series 93:
Item Description
1 Protecting cover
2 Pressure regulator unit with throttle block
3 Siphon block assembly system
4 Monitoring software
5 Oil mist simulation unit
6 Service box