Version 1.0.6 - 2021-07-28
59
Translation of original mounting instruction
GU1
EN
GU1_G
B_4-
va
rio-g
rind
e
r.
fm
5.10
Commissioning
During the connection of several hoses at the extraction ports, it must be ensured that a
leakage resistance of 10
6
Ohm is not exceeded.
The three-phase electrical connection must be equipped with a neutral conductor.
5.11
Electronics
Have the extraction unit checked at regular intervals. Immediately eliminate all defects such as
loose connections, defective wires, etc.
A second person must be present during work on live components to disconnect the power in
the event of an emergency. Disconnect the extraction unit immediately if there is a malfunction
in the power supply!
Comply with the required inspection intervals in accordance with the factory safety directive,
operating equipment inspection.
The operator of the extraction unit must ensure that the electrical systems and operating
equipment are inspected with regards to their proper condition, namely,
by a qualified electrician or under the supervision and direction of a qualified electrician,
prior to initial commissioning and after modifications or repairs, prior to recommissioning
and at set intervals.
The intervals must be set so that foreseeable defects can be detected in a timely manner, when
they occur.
The relevant electro-technical rules must be followed during the inspection.
No check is required before first commissioning, if the manufacturer or installer has confirmed
to the operator that the electrical system and operating materials have been procured in
accordance with the stipulations of the accident prevention regulations.
Permanently installed electrical systems and operating materials are considered constantly
monitored if they are continually serviced by qualified electricians and inspected by means of
measurements during operation (e.g. monitoring the insulation resistance).
5.12
Inspection deadlines
Define and document the inspection deadlines for the extraction unit in accordance with § 3 of
the Factory Safety Act and perform an operational risk analysis in accordance with § 6 of the
Work Safety Act. Use the test intervals specified in the inspection and maintenance as
reference value.
Ambient air, hazardous substance pollution
annually, local measurements for particulate hazardous substances.
every 3 years, local measurements for pure gaseous substances.
5.13
Operation of extraction unit
INFORMATION
The blower in the GU1 only switches on in conjunction with inverter drive (Vario grinding
machines) if the speed is first set to high speed when the grinding machine is switched on in
order to exceed the 0.5 A detection signal for switching on the blower.
5.14
Description of functioning of the extraction system
In the machine substructure is situated a fan than generates an underpressure. The negative
pressure produced draws in the ambient air. The air volume from the extraction connections is
guided via a cyclone separator that extracts the fine dust particles from the extracted air and
deposits them in a collection tank. The exhaust air cleaned is guided back to the outside via a
filter.