Nederman RBU 1300, Руководство пользователя

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RBU
EN
data for measured noise levels. The noise level will
rise by several dB(A) when the vacuum gets close to
the maximum working vacuum. Measurements have
been made free-field with the unit standing on a re-
flective base in accordance to ISO 11201 standard.
The noise levels can be several dB(A) higher in a room
with hard reflective walls.
5.2 Outdoor installation
Consider the following when installing the unit out-
doors:
• Cover the top of the unit to protect it from snow,
rain or falling debris.
• Avoid placing the unit against a wall directly ex-
posed to the sun.
5.3 Compressed air installation
5.3.1 Requirements
For air consumption, quality and maximum and minim-
um pressure, see
Section 3.6 Technical data .
NOTE!
The specified air consumption of the unit is
limited to the short operation of the start-up
valve.
As new pipes may contain dirt, particles or debris, the
compressed air pipe is to be blown clean before con-
necting the unit.
The enclosed compressed air filter must be installed
to ensure the reliable and safe operation of the unit.
The compressed air valve vents the remaining pres-
sure of the unit.
NOTE!
• Take necessary measures to avoid water or
humidity in the compressed air when the unit
is installed in cold environments.
• If antifreeze additives are used, use them
continuously. Once added, the removal of an-
tifreeze additive can cause the pneumatic
components to malfunction.
5.3.2 Installation
Connect a compressed air supply to the inlet, see Fig-
ure 3 item 7, and Section 3.2 Connections .
Connect the vacuum meter, Figure 3 item 15 and Sec-
tion 3.2 Connections .
5.4 EMC
Units intended for use with variable frequency drives
are fitted with EMC compatible cable glands. EMC com-
pliant, screened cables must be used.
5.5 PTC
The motor has added thermal protection in the form
of three PTC devices connected in series and embed-
ded in the windings. Connections to the motor thermal
protection are available in the motor terminal box. It is
strongly recommended to use the motor PTC to stop
the unit, should an over-temperature be detected and
is mandatory for units intended for use with a variable
frequency drive.
6 Using RBU
6.1 Before start-up
The vacuum unit and any auxiliary options are tested
before delivery and all functions are checked. A test
report accompanies each unit.
Ensure the following before the initial start-up:
• The maintenance switch is installed (if used).
• The installation room has ventilation openings (if
used indoors), see Section 5.1 Indoor installation
• Dust collector, duct and valves at the worksites are
connected.
• Exhaust air is ducted away from the installation (if
used indoors).
• Make sure the exhaust duct is protected from rain
and snow.
• Make sure the exhaust duct is fitted with a grid so
no foreign objects can get into the duct.
• The compressed air supply is permanently fitted.
• All electrical connections have been correctly made
as in Figure 6 - Figure 8 .
• Nederman start- and control units have the termin-
als connected, and in some cases jumped connec-
tions. Verify the connections using the connecting
diagrams.
• The pilot signal cable from all valves is linked to the
start- and control unit on units with automatic start/
stop.
• All valves at worksites are closed.
• Ensure that the belt guard is properly in place.
6.2 Initial start-up
6.2.1 Checking the direction of rotation
At initial start-up, check the direction of rotation by
doing the following:
1
Start the unit.
2 Compare the direction of the motor rotation with
the arrow on the motor.
• If the direction of the motor and the arrow are
the same, allow the starting procedure to con-
tinue.
• If the direction of the motor is different from the
direction of the arrow, change the direction of
the motor by doing the following:
1
Stop the unit.
2 Disconnect power.
3 a) Open the start- and control unit.
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