instruction manual
for use and maintenance of BLM series
1.1 - GENERAL DESCRIPTION
The BLM vacuum/pressure blowers pump is suitable to be used as an air compressor/decompresser, combined with a watertight tank suitable to be put into
vacuum and under pressure the liquid loading/unloading/distribution. The vacuum/pressure blowers pump is equipped with three adjustable bends.
One bend is in communication with the tank, the other in the atmosphere and the third one is connected to the Ballast cooling. By appropriately
turning the reversing gear inside the vacuum/pressure blowers pump, it is possible to connect the intake to one of the elbows creating where
necessary vacuum or pressure inside the tank.
Pumping of the air is obtained through the rotation of two suitably shaped rotors that counter-rotate in relation to each other.
The incoming air is trapped in a chamber formed by the body and the rotors thanks to the particular shape of the latter and discharged to the output.
1.2 - BLM VERSIONS
The BLM vacuum/pressure blowers pump is available in the following versions:
CCW standard
CCW standard
page 24
1.0 - GENERAL INFORMATION
PUMP FOR BLM VACUUM/PRESSURE BLOWERS
VERSION BLM / MA (WITH GEARBOX)
VERSION BLM / MA / SC (WITHOUT MANIFOLD)
Neither a cooling system nor lubrication is required
in the pumping zone: the air discharged into the
atmosphere is also free from pollutants such as oil,
resins etc...
The pumping capacity is obtained by careful control
of the distances of the rotors from each other and
with the body of the vacuum/pressure blowers pump.
BLM / MA The PTO is driven via a cardan shaft at
1000 rpm. The version can be recognised by the gearbox
located on the rear of the vacuum/pressure pump and
by the identification plate bearing the wording:
MA = CARDANIC TRANSMISSION 1000 rpm
BLM / SC The SC version can be recognised by the
fact that the pump does not have a manifold, but two
sleeves, and by the identification plate bearing the
wording:
SC = WITHOUT MANIFOLD