Nederman NEX D Series Manual

NEX 5m (16'4")
NEX 4m (13'1")
NEX 3m (9'10")
NEX 2m (6'6")
2
REV.0 0123 P/N 2130038
Instruction and Operation Manual
D & DX
NEX
Extraction Arms

NEX D/DX
3
1 Preface.............................................................................................................................................................................................................14
2 Hazard Notices ................................................................................................................................................................................14
3 Description ..............................................................................................................................................................................................14
3.1 Technical data ...........................................................................................................................................................................15
4 Installation ................................................................................................................................................................................................15
4.1 900 bend in hanging or standing position ........................................................................................15
4.2 Mounting ........................................................................................................................................................................................16
4.2.1 Rotary stop ............................................................................................................................................................................16
4.3 Grounding ......................................................................................................................................................................................16
5 Operation ....................................................................................................................................................................................................17
6 Service and Cleaning ..............................................................................................................................................................17
6.1 Internal cleaning of hood, hose and 900 bend ...........................................................................17
6.2 Internal cleaning, arm system ...........................................................................................................................18
6.3 Regular maintenance .....................................................................................................................................................18
6.4 Adjusting the links ..............................................................................................................................................................18
7 Spare Parts................................................................................................................................................................................................19
8 Recycling .......................................................................................................................................................................................................19
Installation Figures .......................................................................................................................................................................5
Table of Contents
Declaration of Conformity ............................................................................................................................................4

4
Declaration of Conformity
AB Ph. Nederman & Co.
P.O. Box 602
SE-251 06 Helsingborg
Sweden
Dorinel Lapadat
Head of Product Centre
2017-05-23
Declaration of Conformity
We, AB Ph. Nederman & Co., declare under our sole responsibility that
the Nederman product:
NEX D/DX (Part No. **, and stated versions of **) to which this
declaration relates, is in conformity with all the relevant provisions of
the following directives and standards:
Directives
2006/42/EC.
Standards
EN ISO 12100, EN 13463-1, EN 13463-5, EN 1127-1.
The name and signature at the end of this document, is the person
responsible for both the declaration of conformity and the technical
file.
NEX D/DX

5
6
Part no.
10512732
Part no. 10512832
Part no. 10512832
Installation Figures
1
Mounting Examples
NEX D/DX

NEX D/DX
6
max. 78"
2000 mm
NEX 2m
NEX 3m
NEX 3m
NEX 4m
NEX 5m
Ø6.3"
Ø160 mm
R 39" (1000 mm) NEX 2 m
R 63" (1600 mm) NEX 3, 4 - 5 m
9"
230
320
225
6.3"
160 mm
90.5" (2300 mm)
500 (NEX 2m) 1000 (NEX 3, 4-5 m)
Ø7/16" (1 1 mm)
max. 118"
3000 mm
max. 157"
4000 mm
max. 197"
5000 mm
55" (1400 mm)
2
1-Al 2-PP
3-PVC 4-EPDM
6-PVC
7-EPDM
8-SS
9-PP
10-AL
Spring
Steel
12-PVC
11-EPDM
13-EPDM
14-AL
3
5 - D = PVC
DX = Polyester/Polyurethane

7
A
NEX 2 m & 3 m
A1
B1
NEX 2 m & 3 m
B
NEX 4 m & 5 m
A2
NEX 4 m & 5 m
B2
9"
230
11.3"
287
8.9" 225
8..7" 220
Ø7/16"
Ø1 1
NEX 4 m / 5 m
1
C
B
A
Ø 19/64"
Ø7.5 mm
M8x16
Rotary stop
4
5
NEX D/DX

NEX D/DX
8
~91" (~00 m)
~75" (~9 )






NEX  
NEX  
NEX  



NEX D/DX
9
4
6NEX DX only
7
8
IMPORTANT!
Joint arm in
this direction.
8
A
B
10
11
9
Stretch the hose on the lengths A and B.
9
4 m & 5 m
4 m & 5 m

NEX D/DX
10
15
16
17A
17B
NEX DX only
11
NEX D
1 ground wire
NEX DX
2 ground wires
14
12
13
10
< 100 ohm Ω

11
360 0
A
A
B
5
5
1 3
12
13
NEX D/DX

NEX D/DX
12
A
13 mm
(~1/2")
B
13 mm
(~1/2")
C1
C2
C3
14
15

13
C5
C4
C7
C6
C8
16
NEX D/DX

NEX D/DX
14
1 Preface
Read this manual carefully before installation, use and service of this product.
Replace the manual immediately if lost. Nederman reserves the right, without
previous notice, to modify and improve its products including documentation.
All installation, maintenance and repair should be completed by qualified personnel
using only original spare parts. Contact the nearest authorized distributor or Nederman
for advice on technical service and obtaining spare parts. If there are any damaged or
missing parts when the product is delivered, notify the carrier and the local Nederman
representative immediately.
2 Hazard Notices
This document contains important information that is presented either as a warning,
caution or note. See the following examples:
WARNING! Indicates a potential hazard to the health and safety of personnel and
how that hazard may be avoided.
CAUTION! Indicates a potential hazard to the product (not to personnel) and
how that hazard may be avoided.
NOTE! Contains other relevant/important information.
3 Description
The NEX D/DX is designed to be used in environments where the atmosphere could be
explosive as a result of mixing air with dust. NEX D is equipped with a grounded
ventilation hose made of FDA approved ingredients. NEX DX has a double ground wire
and antistatic ventilation hose that prevents static electricity and sparks. Both
products are suitable for industries where hygiene is a top priority.
WARNING! Risk of Explosion
The NEX-arm must not be used for extracting dust/air-mixtures with:
* MIE < 3 mJ for NEX DX/D (*MIE = Minimum Ignition Energy)
CAUTION! NEX D/DX must not be used for extracting dust that could affect or
interact with the materials used in the NEX D/DX, see Figure 3 and see list below.
NEX D/DX contains the following materials of construction (see Figure 3)
Aluminum PP (Polypropylene)
PVC EPDM
Stainless steel Arm system: Aluminium and spring steel
NEX D: PVC NEX DX: Polyester/Polyurethane

NEX D/DX
15
3.1 Technical data
Table 3-1: Technical data
Noise level*: 54-81 dB(A)
Weight:
•NEX D/DX 2m 37.5 lbs. ( 17 kg)
•NEX D/DX 3m 46.3 lbs. (21 kg)
•NEX D/DX 4m 61.7 lbs. (28 kg)
•NEX D/DX 5m 70.5 lbs. (32 kg)
Hose Diameter Ø6.3" (160 mm)
Max Airflow** 1000 cfm (1700 m3/hr)
Recommended temperature use Maxiumum 158 0F (70 0C)
Zone, dust***:
•NEX DX 21, 22 ***
•NEX D 22 ***
* Measured according to ISO 11201.
** Also apply to local directions.
*** For use in respective zones according to ATEX-work directive 1999/92/EEc.
4 Installation
4.1 900-bend in hanging or standing position
The NEX D/DX arm is recommended to be mounted according to Figure 4, item A with
900 bend in hanging position.
The NEX D/DX arm can also be mounted according to item B, with the 900-bend in
standing position. However, the arm holder must then be revolved 1800. . Revolve
the arm holder in the following way:
1. Loosen the four screws fitting the arm holder to the 900-bend.
2. Move the arm holder approximately 17 mm away from the 900-bend.
3. Revolve the arm holder 1800.
4. Move the arm holder back towards the 900-bend.
5. Fasten the four screws.

NEX D/DX
16
See Figures 5-11. The extraction arm can be mounted on wall or ceiling together with
a wall bracket. Ensure that the surface, on which to mount the arm, is level and use
the wall bracket to mark the holes.
Use anchor bolts and nuts suitable for the wall material. The bolts must each stand a
torque force of minimum 1200 N (2m), 1900 N (3m), 3200 N (4m), 4500 N (5m)
Use a level and make sure that the extraction arm is fitted in a horizontal position.
Check that proper measurements have been taken to avoid all types of electrical
stray currents to and/or from the piping system and electrical wiring.
NOTE! Make sure the housing is properly grounded. See figure 11 and section 4.3
Earth control measurement
4.2.1 Rotary Stop
Should only be fitted when the arm is mounted in a 3600 rotating position, see Figure 5.
Check for proper earth connection, after both main installation and regular
maintenance, as follows:
•NEX D has one ground wire. Measure according to Figure 11 item 16.
•NEX DX has both the hose and the arm system are grounded. Measure
according to Figure 11 item 16 and the following sequence:
1) Remove and isolate the ground wire of the hose (see Figure 13, item 5)
from the connector.
2) Check ground continuity according to Figure 11 item 16.
3) Reattach the ground wire, see Figure 13 item 5.
4) Remove and isolate the ground wire of the arm, see Figure 11 item 17A
and 17B.
5) Check ground continuity according to Figure 11 item 16.
6) Reattach the ground wire, see Figure 11 item 17A and 17B.
4.2 Mounting
4.3 Grounding

NEX D/DX
17
5 Operation
WARNING! Ignition risk for some dust or solvents.
• Do not collect material that is caustic, explosive, highly flammable, chemically
unstable, spontaneously ignitable, or which can release sparks.
• Check that no objects that can cause a spark or fire are sucked in to the arm, or
impact against the hood.
• Avoid mixing dust from different processes, for example service
See Figure 12. The extractor arm can easily be positioned at any point within its
working area. It can be rotated 1800 when wall mounted and 3600 when ceiling
mounted. For best capture, the hood should be positioned 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.
Max air flow: 1000 cfm (1700 m3/hr). Also check local directions.
Always check that the airflow is sufficient in the hood before work begins.
Insufficent airflow depends on:
•The fan impeller rotating in the wrong direction.
•Hood, hose or 900-bend are blocked.
•Filter cartridges are blocked.
6 Service and Ceaning
Treat NEX D/DX as a part of other machinery and clean it according to the cleaning
procedure plan. Clean and check it periodically according to the instructions
in sections 6.1 to 6.4.
WARNING! Risk of personal injury.
• Use a dust filter mask and other necessary PPE safety equipment when cleaning
the NEX D/DX.
• There is a squeeze/crush risk at the horizontal link on 4m and 5m models.
The NEX D/DX can be dry or wet cleaned:
•Dry cleaning: Vacuum & wipe the components externally and internally if necessary.
•Wet cleaning: Use a detergent solution that will not damage the product. See section
3 for materials of construction. Follow advice from the manufacturer of the detergent
solution regarding dosage and washing method. Rinse with clean water using low
pressure and hot water 100-100 0F
Avoid directly rinsing sleeves, joints and so on. Let the NEX-arm dry before it is used
6.1 Internal cleaning of hood, hose and 900-bend
1. Detach hood and hose.
2. Carry out dry or wet cleaning according to instructions in section 6 above.
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 ground, see Figure 13. Make sure the NEX D/DX is
properly grounded. See figure 11 and section 4.3 Grounding.

NEX D/DX
18
6.2 Internal cleaning, arm system
Internal cleaning is recommended approximately once a year, see Figure 14.
1. Hold the arm straight at a 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 instructions in section 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 grounded. See figure 11 and section 4.3 -
Grounding.
6.3 Regular Maintenance
Regular maintenance is recommended at least once a year.
1. Check that the NEX arm is grounded, see Figure 11.
2. Check that the hose is intact. If necessary, change the hose.
3. Check the mounting of the arm on wall or ceiling.
4. Remove all the arm covers and bellows, see Figure 14. Adjust the links if
necessary. Check the function of the spring and spring holder.
5. Check that the suction capacity in the hood is sufficient.
6.4 Adjusting the links
Adjusting links is recommended at least once a year, see Figures 15 & 16.
WARNING! Risk of personal injury.
Use necessary safety equipment.
A. Adjust the inner link.
B. Adjust the knee link.
C1. Loosen the below.
C2. Unscrew the ball joint from the hood. C3. Remove the below.
C4. Loosen the two socket head cap screws.
C5. Tighten the ball joint using two adjustable spanners
C6. Remount the ball joint at the hood and test the hood movement. If necessary
tighten the ball joint more.
C7. Tighten the two socket head cap screws.
C8. Unscrew the ball joint from the hood. Refit the bellow. Fasten the bellow at the
outer arm cover. Fasten the ball joint at the hood.
D. Make sure the NEX D/DX is properly grounded. See figure 11 and section 4.3 -
Grounding.

NEX D/DX
19
7 Spare parts
Installation, repair and maintenance work is to be carried out by qualified
personnel using only original Nederman spare parts. Contact your nearest
authorized distributor or Nederman for advice on technical service.
Ordering spare parts
•Part number and control number (see name plate)
•Name of the spare part (see www.nederman.com).
•Quantity of the parts required.
8 Recycling
The product has been designed for component materials to be recycled. Its different
material types must be handled according to relevant local regulations. Contact the
distributor or Nederman if uncertainties arise when scrapping the product at the end
of its service life.

Nederman Customer Service & Technical Support [e-mail] [phone]
The Nederman Group is one of the World’s leading suppliers of products and solutions within
the environmental technology sector focusing on industrial air filtration and recycling. These
products and solutions reduce the environmental impact of industrial production and create
safe and clean working environments while boosting production efficiency.
The group’s offering covers the design stage through installation, commissioning and servicing
with subsidiaries in 29 countries and agents and distributors in over 30 countries.
Nederman is ISO 9001 and 14001 certified and develops and produces in its own manufacturing
and assembly facilities in Europe, North America and Asia.
Nederman Service Capabilities
Nederman has certified service partners trained extensively in servicing our machinery. Make
sure to choose a certified technician to service your Nederman equipment as they have the
correct tools and knowledge to solve any machinery issues and improve its performance. Be
sure to ask if your technician is certified by Nederman.
Our services for dust collection systems are customized to your particular needs. We work with
you to understand your needs, then develop a program to meet your specific needs. Our
services include: (not all services available in all locations)
Bag Change-outs
Bag Selection Recommendations
Collector Re-builds
Dye Testing for Leakage
Electrical Tests - Current, Voltage
Emergency Call-outs
Filter Media Analysis
Mechanical Survey and Repair
Multi-year Contracts
New Collector Start-up Service
On-going Technical Support
Preventative Maintenance Programs
Repair and Replace
Gauges/Timers/Valves
Stack Emission Testing
Training Programs
Troubleshooting / Auditing
Velocity, Pressure and Temperature Tests
Written Service Report
Customer Service and Technical Support
Nederman Corporation USA
4404-A Chesapeake Drive
Charlotte, NC 28216
336-821-0800
www.nederman.com
NEX D/DX