Operating Instructions - Becker VARIAIR DIRECT SCREW 1500 Operating Manual

1. Operating instructions

Safety instructions
Please observe the regulations for the pre -
vention of accidents VBG 16 Compressors,
in particular paragraph III c "Assembly" and IV
"Operation", as well as VBG 4 "Electric machinery
and Equipment".
Changes of design or modifications to the pump are
subject to prior permission by the factory.
Field of use
The unit is used to produce negative pressure
(vacuum) or to generate pressure.
The characteristics apply to heights of up to 800 m
M.S.L.
The pump is unsuitable for transporting toxic or
combustible media.
The operation is only intended for normal atmos-
pheric air.
Transportation and storing
Store the vacuum pump in a dry place and protect
it from shower water.
Lift and transport it only by using the bracket.
Assembly
Take into consideration that the pump should be
easily accessible for later maintenance work.
In unobstructed dimensions, the space between
the rear wall of the pump and neighbouring walls
should be at least 50 cm and 80 cm for the side
walls to ensure the unimpeded circulation of air for
cooling purposes. In order to be able to open the
doors at the front a minimum space of 80 cm is
required.
The permissible ambient temperature (5 °C. .. 40 °C)
must be respected.
Take measures to reduce structure-borne noise on
site.
Make sure there is enough ventilation in the air intake
area during pressure mode, because otherwise there
is danger from a powerful vacuum pressure.
Installation
Be sure to have the right dimensions and clean
pipes (no welding beads, chips or similar soiling).
Use pipes whose minimal diameter corresponds to
the nominal connection width of the air intake. In
case the pipe length exceeds 2 m, choose the next
bigger diameter.
Mount a compensator to avoid mechanical voltage
on the suction side.
Keep connections free of oil, grease, water or other
soiling.
Filling in oil
Use the oil brand
(or, alternatively, oil complying with ISO
VG 68).
To fill in the oil, open the read plastic cap on the oil
filler neck (figure 3).
Remove the protective caps at LA and SA (figure 1).
Do not yet connect with the piping system.
Connecting the unit
Adhere to all the pertinent regulations in connecting
the power supply. Observe EN60204 T1.
Have a specialist for electrical installations connect
the unit in accordance with the connection diagram
(in the terminal box), taking into account mains vol-
tage, nominal current and frequency.
Start the motor briefly and check direction
of rotation (arrow on housing). Change
phase in case of a wrong direction of rotation.
Avoid more than 10 switches per hour.
Direction of rotation of the components (Page 7).
Initial operation
Vacuum unit
Connect the suction line at SA (figure 1).
Do not choke or lock the air escape LA and do not
use it as a compressed-air supply.
Pressure unit
Connect the pressure line at LA (Fig. 1).
Do not throttle or block the air vent SA or use as
vacuum connection.
Maintenance
Regular maintenance work will help optimise the
operating results of the pump. The intervals depend
on the use and the ambient conditions.
Before starting the maintenance work
disconnect the unit and be sure to prevent
an unintended restart.
After switching off the pump, allow the
device to cool down, because otherwise
there is a risk of burns under the hood
(outlet manifold) and at the pump outlet flange.
General recommendation: Work with gloves.
BECKER LUBE G70
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