Nederman NEX 2 m, Инструкция по эксплуатации

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NEX D/DX
4.3 Earth control measurement
Check for proper earth connection, after both main in-
stallation and regular maintenance, as follows:
• NEX D has one earth wire. Measure according to
Fig-
ure 11 item 16.
• On NEX DX both the hose and the arm system are
connected to earth. Measure according to Figure 11
item 16 and the following sequence:
1
Remove and isolate the earth wire of the hose
(see
Figure 13 item 5) from the connector.
2 Check earth continuity according to Figure 11
item 16.
3 Reattach the earth wire, see Figure 13 item 5.
4 Remove and isolate the earth wire of the arm,
see
Figure 11 item 17A and 17B.
5 Check earth continuity according to Figure 11
item 16.
6 Reattach the earth wire, see Figure 11 item 17A
and 17B.
5 Using NEX D/DX
WARNING! Ignition risk for some dust or
solvents
• Do not collect material that is caustic, explos-
ive, highly flammable, chemically unstable,
spontaneously ignitable, or which can re-
lease sparks.
• Check that no objects which can cause spark-
ing or fire are sucked into the arm, or impact
against the hood.
• Avoid mixing dust from different processes,
for example, service works and plastic grind-
ing mixed with metal grinding.
See Figure 12 . The extractor arm can easily be posi-
tioned at any point within its working area. It can be
rotated 180° when wall mounted and 360° when ceil-
ing mounted. For best capture, the hood should be po-
sitioned as near the fume or dust-generating process
as possible. The hood (on some models) is equipped
with a damper which can be adjusted with a lever.
Recommended airflow: 1700 m
3
/h (1000 cfm). Also,
check the local directions.
Always check that the airflow is sufficient in the hood
before work begins. Insufficient airflow is depending
on:
• The fan impeller rotating in the wrong direction.
• Hood, hose or 90°-bend are blocked.
• Filter cartridges are blocked.
6 Service and cleaning
Treat NEX D/DX as a part of other machinery and clean
it according to the cleaning procedure plan. In addi-
tion, clean and check it periodically according to the
instructions in Section 6.1 Internal cleaning of hood,
hose and 90°-bend to Section 6.4 Adjusting the links .
WARNING! Risk of personal injury
• Use a dust filter mask and other necessary
safety equipment when cleaning the NEX D/
DX.
• Squeeze/crush risk at the horizontal link on
4m and 5m NEX-arm.
NOTE!
Fill out the service protocol for all maintenance
performed on the NEX D/DX.
The NEX D/DX can be dry or wet cleaned:
• Dry cleaning: Vacuum and wipe the components ex-
ternally and even internally if necessary.
• Wet cleaning: Use a detergent solution that will
not damage NEX D/DX, see Section 3.1.1 ATEX
products ’. Follow the advice from the manufacturer
of the detergent solution regarding dosage and
washing method. Rinse with clean water. Use low
pressure and a water temperature of 40–50 °C.
Avoid directly rinsing sleeves, joints and so on. Let the
NEX-arm dry before it is used again.
6.1 Internal cleaning of hood, hose and
90°-bend
1 Detach hood and hose.
2 Carry out dry or wet cleaning according to instruc-
tions in
Chapter 6 Service and cleaning .
3 Let the components dry.
4 Re-fit the components. Stretch the hose along the
lengths A and B.
5 Connect the hose spiral to earth, see Figure 13 .
Make sure the NEX D/DX is properly connected
to the earth. See
Figure 11 and Section 4.3 Earth
control measurement .
6.2 Internal cleaning, arm system
Internal cleaning is recommended approximately once
a year, see
Figure 14
1 Hold the arm in a straight, slight angle.
2 Detach hose, arm covers and bellows but not the
arm system, see
Figure 13
3 Carry out dry or wet cleaning according to instruc-
tions in
Chapter 6 Service and cleaning .
4 Let the components dry.
5 Re-fit the components. (Hose: see Figure 13 .)
6 Make sure the NEX D/DX is properly connected
to the earth. See
Figure 11 and Section 4.3 Earth
control measurement .
6.3 Regular maintenance
Regular maintenance is recommended at least once a
year.
EN
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