User and maintenance manual
EN
TSC - TDC
17
8702040 – 14/01/2019 – R.7
www.dvp.it
5
INSTRUCTIONS FOR USE
5.1
OPERATION
The turbine's operating principle is based on the rotation of an impeller fitted with small flaps inside a stator. Thanks
to the centrifugal force generated by the rotation, air vortexes are created that are dragged by the intake vanes
towards the discharge (outlet).
HAZARD
Under special operating conditions, the turbine can produce very high temperatures (above
80°C).
Depending on the kind of installation, special measures need to be taken to avoid accidental
contact with the turbine.
Furthermore, consider that the conveyed gases are at the same working temperature as the side
channel turbine and can be released via possible maximum pressure valves or from high
temperature piping. Special precautions should be taken in order to avoid contact with personnel
and/or equipment and electric parts nearby.
HAZARD
The side channel turbine can reach high acoustic pressure levels. In these cases it is necessary
to isolate the turbine or equip the operators with suitable individual protection means.
5.2
START-UP
HAZARD
The side channel turbine can only be started-up after all the indications, requirements and
prohibitions have been carefully read, understood and respected, as well as respecting the levels
of operating differentials indicated in this manual.
Checks to be performed before start-up:
If an excessively long period of time has elapsed before starting up the turbine, check its preservation status.
Check and if necessary remove dust deposits from the external surfaces and proceed with lubricating the
bearings as indicated in point 6.2.6 of this manual.
Make sure that the turbine's intake and outlet are not blocked by connectors and/or protections and/or closure
valves.
Check that the adjustment of the motor protection corresponds with the motor's nominal current indicated on the
relative plate.
Check the correct functioning of the the safety valve/s installed.
Check that the room temperature and that of the conveyed gas intake is within the levels indicated in point 3.3
of this manual.
After carrying out the preliminary controls listed above, the side channel turbine can be started up.
Start up the turbine and check that the working pressure or vacuum as well as the electric motor's absorption
comply with the levels indicated on the motor plate and in this manual (see 3.3).
HAZARD
The turbine may reach high temperatures when operating.
WARNING
With a view to reducing energy consumption and not damaging the turbine, it is advisable not to
start up more than 6 times / hour and that they are equally distributed.
The side channel turbine's working temperature increases with the increase in pressure differential.
High temperature levels can be due to room temperature or gas intake that is too high, pressure differential that is
greater than that allowed, installation is in constricted spaces, exposure to direct sun rays, dust deposits on the
motor's cooling fan or on the fan cover casing.
After start-up, the turbine may run slower than the regular rpm if room temperature is lower than that shown in
point 3.3. It may also run lower if the supply voltage is lower than the required voltage as indicated on the motor
plate.
If nominal rpm is not reached within a few seconds, the electric protection system fitted to protect the turbine must
trip (installation set out in point 4.8.2).
Avoid at all costs that the turbine works with the "inlet closed" especially on machines
with high differentials. Insert an intake or compression (outlet) safety valve that can
prevent vacuum or overpressure excesses and allow for the levels set in point 3.3 of this
manual to be respected.