Nederman FilterMax DX Series User manual

CAPTURE AT SOURCE
NO. 148405 / 00
2001-02-01
This Instruction Manual refer
only to FilterMax DX with the
following particular part no.
INSTRUCTION MANUAL
0
1
ENGLISH

CE, Declaration of conformity
Technical data
IMPORTANT!
Delivery check
Pre-installation
Risk area
Dimensions
Mounting instructions
Mounting the filter cartridges
Compressed air connection
Electrical installation
Accessories, electrical installation
Earth control measuring
Wiring diagram
Connection of several FilterMax DX to one system
Connection of 2 or 3 pilot boxes
Fans
Duct dimensioning / System installation
Operating description
Product marking
Starting the system
Applications
Monitoring system, settings
Monitoring system, general descriptions
Monitoring system, fault indications
Service instructions
Trouble-shootingschedule
Spare parts
Accessories
Installation and service protocol 1
Installation and service protocol 2
Installation and service protocol 3
Installation and service protocol 4
2
page
3
3
4
4
5
5
6
7
8
9
10
10 - 12
13
14
15
16
16
17
18
19
19
20
20 - 21
22
23 - 24
25 - 27
28 - 30
31
32
33
34
35
36
List of contents
Installation
Service
Repair
Spare Parts
Start
Operation
Protocols

3
0
1
0
1
0
1
Alf Jonasson, Product Manager
This product is designed to meet the requirements of the relevant
EC directives. To maintain this status all installation, repair and
maintenance work must be carried out by qualified personnel using
only original spare parts. Contact your nearest authorised dealer or
AB Ph. Nederman & Co. for advice on technical service or if you
require spare parts.
Declaration of conformity
We, AB Ph. Nederman & Co., declare under our sole
responsibility that the Nederman product:
- FilterMax DX series 667 and its accessories
to which this declaration relates, are in conformity with
the following standards or other normative documents:
EN 286-1, EN 1127-1, EN 50281-1 following the provisions of
Directive 98/37/EC, 89/336/EEC and ATEX 94/9/EC.
AB Ph. Nederman & Co.
Sydhamnsgatan 2
S-252 28 Helsingborg Sweden
2001-02-01
R
Filtration
Operating airflow
Filterarea/filter cartridge
Filter material
Environ temperature
Process air (dry) temperature
Material description
Compressed air requirements
Compressed air consumption
Compressed air connection
Voltage supply
Protection class
Relay voltage, accessory
Working pressure
Pulse noise
Weight
Dimensions
TECHNICAL DATA
Basic filter: 99% weight filtration BIA class C
1 module: 2400 - 3600 m
3
/h (depending o load)
2 modules: 4800 - 7200 m
3
/h (depending on load)
3 modules: 7200 - 10800 m
3
/h (depending on load)
1 module: 60 m
2
2 modules: 120 m
2
3 modules: 180 m
2
Metal covered polyester
-20°C to +60 °C
0 °C to +60 °C, not condensing
3 mm painted steel, epoxy based zinc prime and top coat
0,6 MPa (6 bar / 87 psi), water and oil free
32 N-litres / cleaning pulse, at 0,6 MPa (6 bar / 87 psi)
1/2" (R 15)
100 V, 120 V, 230 V AC, 50/60 Hz
IP 65
24 VAC, max. 60 VA
0 to -5 kPa, not overpressure
Lp Aeq, 30 s, 50 dB
1 module: 720 kg
2 modules: 1170 kg
3 modules: 1630 kg
See next page

4
IMPORTANT!
Standards relating to the connection and use of filters
in hazardous areas must be taken into consideration,
especially national standards for installation. Only
trained personnel familiar with these standards should
handle this type of filters.
FilterMax DX is specially designed to comply with official
regulations concerning the risk of explosion. If impro-
perly used, badly connected, or alter, no matter how
minor, the reliability could be in doubt.
Each FilterMax DX system must be installed and
dimensioned individually. To ensure that the system
will be safe, a risk analysis must be done for each
installation and each intended use.
FilterMax DX is designed for collecting and filtering
explosive and non-explosive dry dust. The filter should
not be used for filtering fumes from welding or cutting
processes. NB! Each FilterMax DX must only be
used according to its intended use, which is
described in the enclosed document "Dust
Application Description".
FilterMax DX should be installed, used and maintained
according to this Instruction Manual in such a way that
safety not will be neglected.
The manual contains important warning directions
which have to be read and followed. Any functional
disorders, especially those affecting the safety of the
machine, should be rectified immediately.
0
1
H
G
F
A
C
BE
D
J
For FilterMax DX 6000 oand 9000
J. Additional filter unit, with relief panel
J. Additional filter unit, without relief panel
F. Inlet (Ø 250, 315, 400 or 500 mm), accessory
G. Outlet (Ø 315, 400 or 500 mm), accessory
H. Filter cartridges (6 pcs./filter unit)
The following Nederman modules should be
mounted together to assemble the complete
FilterMax DX.
A. Filter unit
B. Stand extensions
C. Dust collector (50 litre), accessory
C. Dust collector (50 litre, with plastic bag,
for low dust loads of dangerous
substances), planed accessory
D. Dust feeder, for high dust loads,
planed accessory
E. Control box (mounted)
DELIVERY CHECK
The units should be checked for any damage that
may have occured during transport. If there is damage
or parts missing, the carrier and your local Nederman
representative should be notified immediately.
FilterMax DX can be supplemented by a number
of accessories ( see page 32).

5
Nederman FilterMax DX can be installed indoors or outdoors.
It should be located with consideration for the following:
• High surface temperatures as a result of possible radiation
heat should be avoided.
• Easy handling and emptying of the dust collector.
• Convenience of service and maintenance.
Nederman FilterMax DX is usually installed on a reinforced
concrete foundation. However, installation on another
structure is also possible. When calculating for foundation or
supporting structure the following factors should be taken into
consideration (see technical data):
• Total weight of FilterMax DX
• Traction forces at explosion relieve
• Max. weight of collected contamination
• Possible wind load
• Possible snow load
IMPORTANT! Location must be clear of all obstructions
such as utility lines etc. Pay particular attention to the
anchor bolt location (see Dimensions next page). The traction
force, which the bolts must stand up to, can be found in the
document "Dust Application Description" which comes with
the product. If you intend to secure the unit by using expan-
sion bolts or equivalent fittings, the concrete floor must be
prepared accordingly.
The deflector must be designed and
mounted in a way that makes it possible
to be proof against an explosion.
1,5 D
D
45°
PRE-INSTALLATION
A = approximately
height of FilterMax DX
A
A
A
Width according to the document
"Dust Application Description"
Length accordin to the document
"Dust Application Description"
View from above
DANGER!
Explosion risk!
Risk for grave personal injury!
During operation the roped-off area
must only be entered by operators
and service technicians to the
FilterMax DX.
Warning Sign example which can
be used to mark the risk area.
FLAME AND PRESSURE RISK AREA
WARNING!
Explosion risk! Risk for grave personal
injury and/or damages!
FilterMax DX SR - side reliefed models
A risk area around the FilterMax DX must be
marked in an obvious way, for example with a
fence and warning lines and signs. Within the
risk area no inflammable material must be found.
When the FilterMax DX is in operation the risk
area must only be entered by operators och
service technicians. To reduce the risk area
it is possible to fit a deflector, angled 45°in
front of the relief sheet.
FilterMax DX TR - top reliefed models
Make sure that no inflammable material is
found above the FilterMax DX.

DIMENSIONS
153
D
ABC
FE
919
1050
185
INLET
1 MODULE
3 MODULES
2 MODULES
OUTLET
1112
G
1395
1545
1200
120
20
50
1200
open angle 155°
A
B
C
D
E
F
G
H
H
50 litres container
In/Outlet inner diameters (mm)
250
-
-
-
2590
3510
-
-
270
315
2615
3535
-
2700
3620
4540
1195
315
400
2685
3605
4525
-
3690
4610
1195
390
500
2810
3730
4650
-
-
4740
1195
440
6

7
0
1
Utlopp
Inlopp
WARNING!
Risk of personal injuries
and/or product damages!
Use approved lifting equipment for unloading,
assembly and installation of the units.
MOUNTING INSTRUCTION
0
1
x 3
M16 x 40
M10 x 35 x 8
M12 x 35
x 34
M10 x 35
x 12
1. Mounting the dust collector
and extension legs.
3. For FilterMax DX 6000 and 9000 two
and three filter units are used respectively.
Mount the units together to build the
complete filter unit.
4.Fit the inlet and outlet.
IMPORTANT! The inlet as well
as the outlet must be electrically
connected to the duct system
and the filter house.
NB! The inlet and outlet are reversable
and concequently they can be positioned
for duct connection on the
right or left side of
the filter.
Use a schackle,
not a hook.
Fit the lifting loops around the strengthening
tubes in the filter unit. Use a lifting yoke, as
shown in the picture, which allows the lifting
loops to come near the outer
edges of the unit.
2. FilterMax DX is usually
anchored to a concrete foun-
dation with expansion bolts or
similar. Fit the fixing bolts and
use if necessary adjusting pieces
to get the filter unit in level.
Check with a spirit level.
For more stabilty, the filter unit
can be braced against the wall.
IMPORTANT!
Ensure that the inlet, outlet and
all filter units always are mounted
together with screws in all inten-
ded holes. Always use toothed
washers which make electrical
connections possible.

8
MOUNTING THE FILTER CARTRIDGES
1.Unscrew the two fixing screws on the
access door. Use the enclosed T-key or a 10 mm
standard hexagon key. Open the door.
3.Handle the filter cartridges carefully to
avoid mechanical damage to the filter surface.
5.Hang the filter holders
on the screws.
7.Fasten the nuts.
8.Shut the access door and
fasten the two fixing screws.
2.Loosen the nuts
on the filter holders.
Remove the filter
holders.
4.Insert the new filter
cartridges. NB! The mark
on the back end cap
should be put on the
angled sheet-metal plate
just inside the filter hole.
6.Connect the earth plate
on 2 places as shown in
the picture.
NB! Toothed washers
must be used to ensure
the earth connection.
WARNING!
Risk of personal injury!
For FilterMax DX equipped with 2 or 3 modules
(12 or 18 filter cartridges), an approved lifting
platform (see figure) has to be used when
mounting or replacing the filter cartridges.

9
COMPRESSED AIR CONNECTION
FilterMax DX
Control box
Compressed air tank, module no. 3
Compressed air tank, module no. 2
Compressed air tank, module no. 1
Water drain valve
Connect the compressed air supply line
to the compressed air connection of
the filter. Use pipe sealant on all
compressed air connections.
Compressed air components
A shut off valve for service work and a
filter regulator should be installed in the
compressed air pipe line (NB the flow
direction during the installation).
Important! the filter regulator
must be positioned in a frost free
environment.
Recommended connection size:
minimum 1/2".
Water drain valve
Water drain valve
Filter regulator, should be set
on 0,6 MPa (6 bar / 87 psi),
must be positioned in a frost
free environment
(accessory)
Service valve
(accessory)
IMPORTANT!
•The compressed air supply pressure has
to be = 0,6 MPa (6 bar / 87 psi).
•The compressed air shall have a dew point
below the minimum temperature at which the
system is ment to be used.
•The compressed air supply must be both oil
and water free.
•Improper air pressure or contamination in
the compressed air can result in cleaning
valve failure, poor cleaning and filter
performance.
•Purge compressed air lines to remove debris
before connecting to the compressed air
manifold.
•Do not use thread-sealing tape after the
filter regulator.
•Quick couplings throttle the air too much
and are not recommended.
•Turn off and bleed off compressed air supply
before doing any service work.
•Do not pressurise the system if the air tem-
perature is below the minimum operating
temperature, that is -20 °C. At lower air tem-
perature the process could be started and be
in operation for a while (approx. 15 min.) after
which the system can be pressurised.
Compressed
air connection
1/2" - 1"
Pressure switch, must not
be mounted in zones with
explosive atmosphere
(accessory).

10
JP1
14 109876532
132
96 97
> P
P > 3 bar
JP6
14 10119876532
External START/STOP
Pressure switch, compressed air Fan starter (24 V AC)
Down time damper (24 V AC)
Dust feeder (24 V AC)
Spare, not used
Alarm signal (A or S), 24 V AC
A-Alarm, potential free
contact, 24 V AC
Fan starter
potential free
contact, 24 V AC
Alarm device
Start contactor
Fan start equipment
(not a Nederman product)
Connecting fan and other accessories to the FilterMax DX
as well as connecting FilterMax DX to the mains must be
done by a qualified electrician with necessary knowledge
of explosion proofed installations.
Connection block JP 1: Digital inputs
High dust level
Pressure switch, high dP /
low airflow / simple dP control
Explosion / Fire alarm
Fan motor protector
Spare, not used
Pressure switch
Dielectric detector PNP
Connection block JP 6: Digital outputs
Damper motor
The accessories must be equipped with a
potential free contact
ACCESSORIES, ELECTRICAL CONNECTION
When connecting outer accessories and control cables, the enclosed cable
fittings should be used. The connection is done in the following way:
- Thread the hole in the Control box
- Screw home the cable fitting
- Fit a lock nut on the cable fitting on the inside of the Control box
Enclosed cable fittings
2 PG7 + 2 lock nuts in brass
2 PG11 + 2 lock nuts in brass
1 PG13 + 1 lock nut in brass
Connect FILTERMAX to the mains and connect fan and other components
and accessories according to the wiring diagrams below or on page 14.
Electrical connection together with Nederman Fan Starter or Fan Inverter
is described on wiring diagrams supplied with this product.
0
1
Open the box with
a locking key and
a screw driver.
Remove the
dummy plugs
WARNING!
Risk of personal injury!
Disconnect the electrical power
before servicing any electrical component.
ELECTRICAL INSTALLATION
IMPORTANT!
The Control Box must be opened with the
enclosed locking keys (see picture). To ensure
that the Control Box not can be opened when
there is an explosion risk, the locking keys
should be removed and the dummy plugs be
refitted after finished work. The locking keys
should be kept in another place.
IMPORTANT!
All electrical work must be done by a qualified electrician
with necessary knowledge of explosion proofed installations
according to local regulations.

11
0
1
01
A
0
1
01
0
1
01
B
C
OFF
OFF
OFF
0
1
01
DOFF
or NC or NO
Motor protector, fan
Push the button X.
Activated input: JP1: 6
Set OFF, NC or NO with the 0/1-button.
OFF NC NO
High dust level
Push the button X.
Activated input: JP1: 3
Set OFF, NC or NO with the 0/1-button.
OFF NC NO
Pressure switch, compressed air
Push the button X.
Activated input: JP1: 2
Set OFF, NC or NO with the 0/1-button.
OFF NC NO
Pressure switch
high dP / low airflow
Push the button X.
Activated input: JP1: 4
Set OFF, NC or NO with the 0/1-button.
OFF NC NO
Push the control box button and OFF, NC or NO comes up
on the display.
OFF: The selected input is not activated.
NC = Normally closed: The selected input is activated.
NO = Normally opened: The selected input is activated.
Select NC or NO depending on type of contact on the
connected accessory. Make a note of the setting which
has been selected.
WARNING!
Risk of personal injury!
Electric power connected!
The inputs or outputs should be activated when
accessories have been connected. Push the button (X)
on the back of the control box cover to activate actual
input/output. The LED’s indicate, where appropriate,
with red blinking lights.
The inputs are activated in the following order:
or NC or NO
or NC or NO
or NC or NO
Blinking
Blinking
Blinking
Blinking
ACTIVATING INPUTS AND OUTPUTS
Selecting OFF, NC or NO
X

12
0
1
01
E
0
1
01
F
0
1
01
G
0
1
01
H
or OFF or Int
dA 00
LO ON
0
1
01
K
Down time damper
Push the button X.
Activated output: JP6: 2
24 V AC supply for opening a damper motor with
spring return or magnetic valve for compressed air.
Is used to reduce the starting current at fan start.
Delay time for opening the down time damper:
10 - 60 s after fan start. Set the required delay time
with the 0/1-button.
OFF NC NO
0
1
01
JLINE 1
1. Switch off the main switch.
2. Connect a pressure switch (1 - 2 kPa) to JP 1,
inlet 4 plus 9 or 10.
3. Push the control box switch (0/1-button) and the
button X on the back side of the control box cover.
4. Switch on the main switch. NB! The 0/1-button and
the button X must be pushed at the same time while
the main switch is switched on.
5. Set the pressure at which the cleaning shall start
(normally 400 - 800 Pa).
EA OFF
dF ON
or NC or NO
Explosion / Fire alarm
Push the button X.
Activated input: JP1: 7
Set OFF, NC or NO with the 0/1-button
00 - 60 s
Dust feeder
Push the button X.
Activated output: JP6: 3
Direct controlled by contactor or other 24 V relay.
ON: The dust feeder is in operation
OFF: The dust feeder is not in operation
Int: Intermittent operation of the dust feeder
Set ON, OFF or Int with the 0/1-button.
or OFF
LINE-connection
Push the button X.
Connection to JP4, see page 15
Set LINE 1, LINE 2 or LINE 3 with the 0/1-button.
External START/STOP
Push the button X.
Activated input: JP1: 1
Inactivates the start/stop button on the control box.
Only remote start is possible.
Set ON or OFF with the 0/1-button.
Simple dP-controlling
Slow green blinking during operation.
Fast green blinking during cleaning.

EARTH CONTROL MEASURING
0
1
4
8
3
6
7
12
0
1
9
10
JP3
230
120
100
0
0
24
Circuit card
FilterMax DX
Control Box
GND1
Earth control measuring must only be done by a
person with necessary knowledge of explosion
proofed installations.
IMPORTANT!
All metal parts of the filter unit must be earthed
reciprocally and connected to extern earth on
two of each other independent points. To secure
this, the following procedure must be followed.
The control measuring
Use an ohm-meter which at all measurings must indicate less than
10 ohm. Make sure that there is a metallic contact between the
actual component and the ohm-meter measuring tool.
NB! The duct system must not be connected.
1.
A. Disconnect the net earth from GND 1.
B. Measure between all components according to the list
above and GND 1.
C. Measure and check if contact between incoming duct
system and the free coupled incoming net earth.
2.
Connect incoming duct system (make sure that there is an
earth connection between the duct system and FilterMax DX).
A. Measure and check if contact between GND1 and extern net earth.
B. Reconnect net earth to GND1.
Connect outgoing duct system (make sure that there is an
earth connection between the duct system and FilterMax DX)
3.
Disconnect at earth
control measuring
When the FilterMax DX has been installed and at maintenance
work the earthing shall be measured. The measuring is done
between GND1 (in the Control Box, see picute below) and the
following components on FilterMax DX:
1. Inlet
2. Cleaning access point (on the inlet)
3. Dust collector
4. Adapter for dust collector
5. Filter cartridge
6. Filter module
7. Door
8. Relief panel
9. Dust feeder
10. Adapter for dust feeder
13

14
WIRING DIAGRAM
CONNECTION TO THE MAINS
CONNECTION OF:
• AFTER CLEANING DAMPER
• PRESSURE SWITCH (accessory)
• PILOT BOX
JP6: Outputs
S1: Pause time
S2: Down time
S3: Remote
auto restart,
On A-alarm
Designations, Circuit card
FilterMax DX Control Box:
JP1: Inputs
JP3: Power supply
JP4: Pilot box
JP5: Connection for help
contact on main switch.
Closed when disconnected.
Prevents A-alarm at broken
supply for service.
1. Down time damper
Alt. 1. Electric motor open and close
Alt. 2. Electric motor open, Spring return
Alt. 3. Magnetic valve for air pressure
(recommended)
2. Transformer
3. Pressure switch, compressed air
JP1
> P
JP5 S1 S2 S3
JP6
1
2
3
4
5
6
7
8
9
10
11
1 2 3 4 5 6 7 8 9
10
1
2
JP3
230
120
100
0
Open
Supply
Com
JP4
Output
Input
4
3
2
1
0
24
1 2
34 1
2
34
0
24
0
24
2 A
1Circuit card
FilterMax DX
Control Box
Motor
Down time
damper
NB! Down time
damper with spring
return should be
connected only to
JP6 no. 2 and no. 8.
2
3
GND1
Disconnect at
earth control
measuring
Mains-connection
100/120/230 V,
PE, 50/60 Hz Magnetic
door switch
Pilot Box
Connection of
2 or 3 pilot boxes,
see page 16.
BASIC FUNCTIONS
For fan start, two alternatives are possible.
Alternative 1:
Connection to bloc JP6: 1 for direct control by
contactor or other 24 V relay.
Alternative 2:
Potential free relay to bloc JP6: 8 - 9, is used when the
start equipment has its own 24 V controller, for example
Nederman Fan Starter PTC (which is recommended).
The complete connection is described in the Instruction
Manual which is enclosed with this product.
FilterMax DX
Wire to JP 6 / 2 and 10 or 11(common) and the lower
24 V AC output from the transformer.
Wire to JP 6 / 2 and 10 or 11(common).
FilterMax DX - Wire to JP 1 / 2 and 9 or 10(common).
Select NO in the software setting if an OPEN contact indicates OK.
Select NC in the software setting if a CLOSED contact indicates OK.

JP1
JP5
S1 S2 S3
JP6
1
2
3
4
5
6
7
8
9
10
11
1 2 3 4 5 6 7 8 9
10
1
2
JP3
230
120
100
0
JP4
-
Door
Pilot
control
IN OUT
4
3
2
1
1 2
34 1
2
34 1
2
34 1
2
34
4
3
2
1
4321
4
3
2
1
1 2
34 1
2
34
IN OUT
1 2
34 1
2
34 1
2
34 1
2
34
4
3
2
1
4321
4
3
2
1
1 2
34 1
2
34
IN OUT
1 2
34 1
2
34 1
2
34 1
2
34
4
3
2
1
4321
4
3
2
1
1 2
34 1
2
34
{
+
15
2 s 2 s 2 s
0
1
0
1
0
1
LINE 3
LINE 2
0
1
0
1
0
1
LINE 1
NB!
LINE 1 LINE 3LINE 2
Set LINE 1, LINE 2 or LINE 3 with the
0/1-button on the Control Box.
IMPORTANT!
The pilot boxes in line 2 and 3 must
be configurated in the following way:
• Remove the lower protection cover.
• Set the switch on 2 or 3 depending
on what line the pilot box belongs to.
NB! Remove the clamp between 3 and 4
on the output contact before the cable
from the pilot box above is connected.
NB!
NB!NB!
pause time betweencleanings pause time between cleanings
pause time between cleanings
Circuit card
FilterMax DX
Control Box
CONNECTION OF SEVERAL FILTERMAX DX TO ONE SYSTEM

16
JP3
230
120
100
0
JP4
4
3
2
1
1 2
34 1
2
34
1 2
34 1
2
34
1 2
34 1
2
34
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
001000 3000 5000 7000 9000 11000 13000 15000 17000
Each FilterMax DX can be connected to
an existing central EX-fan or to an EX-fan
dimensioned specially for the system.
NB! Remove the clamp between 3 and 4
on the output contact before the cable
from the pilot box above is connected.
Total pressure, Pa
Air flow m3/h
An adequate fan can be selected from the
Nederman NCF EX-range. Please contact your
Nederman representative for dimensioning the
right fan capacity. To start the NCF EX fans a
Nederman Fan Starter PTC is recommended.
Calculated air pressure drop over the
filter is approximately 1200 Pa.
A lockable safety switch (EX-proofed if
FilterMax DX is in a risk zone) is recom-
mended for the whole electric system
including the fan.
FANS
CONNECTION OF 2 OR 3 PILOT BOXES

0
1
DUCT DIMENSIONING AND SYSTEM INSTALLATION
WARNING!
Explosion risk!
Grinding, welding or other hot works
on the filter exterior or inlet must not
be done without cleaning and stopping
the operation.
- Make sure the filter inlet is protected
against possible penetrating explosion.
- Connect a fire alarm to the filter
controling processor, which means the
filter will stop at a possible fire.
30 - 45 °
17
Cleaning access point
Ø250 / 315 mm Ø315 / 400 mm
1 module
2 moduls
3 moduls
Ø315 / 400 mm Ø400 / 500 mm
Ø400 / 500 mm Ø500 mm
Outlet
Inlet
Recommendations
•To avoid pressure losses and dust deposits in the
system it is important to use the correct duct diameter.
The transport velocity shall be at least 15 - 20 m/s for
dust. Take velocity in to account when choosing the
duct diameters. The velocity should never decrease en
route to FilterMax DX. The following duct diameters
can be used for the connection to FilterMax DX.
Flow meter
Nederman
NCF EX fan
Explosion
damper or
explosion
unloader
A > 2,0 m
After cleaning
damper
NB! To adjust the air flow, a
regulating damper in the clean
air duct can be used.
Nederman NEX D or DX-arm for
extracting dust in environments where
the atmosphere can be explosive
•Use long radius bends.
•Install plenty of cleaning access points in the ducting
system before FilterMax DX.
•If the dust is abrasive it may be necessary to use
thick walled (or rubber coted) material in bends and
other exposed areas.
•To avoid pressure losses the ducting system should
be as short as possible and designed with two or more
branches.
•Use larger diameters on the clean side to reduce
pressure losses.
•Use fire dampers when the duct system is passing
from one fire zone to another. NB! Fire dampers do
not stop explosions! FilterMax DX monitoring system
has an input (JP1-7) for fire alarm which, when
activated, immediately stops the filter and a possible
after cleaning damper (fire damper).
•Install a flow meter between FilterMax DX
and the fan.
•To prevent a self ignition with a following explosion
at a possible filter break down, a safety filter with an
alarm function could be mounted in the duct system
between FilterMax DX and the fan.
•To reduce the risk of striking sparks and explosion
as a result of unknown material coming into the inlet
duct, the following measures could be taken:
- Install an explosion safe pre-separator in the inlet duct.
- Fit the inlet duct with the horizontal length A(see picture
above) of at least 2.0 m.
- Use, if necessary, an inclining vertical duct (approxi-
mately 60°against the horizontal level) to the inlet on
FilterMax DX.

18
OPERATING DESCRIPTION
It is recommended to use a downtime
damper which should be mounted close to
the inlet (see picture page 16). The damper
closes the duct when FilterMax DX is shut
off, which will prevent dust from being
transported back into the workshop by the
air pulses from the down time cleaning.
The contaminated air is led through the inlet which is
shaped to distribute the air evenly into the filter. Inside
the inlet there are four blades that further enhance the
air distribution. This design also minimises the
pressure loss in the inlet.
The filter cartridge seen from above
The filter cartridges are cleaned one
by one with powerful air pulses. The
air pulses are distributed into the slot
shaped outlet of the filter cartridges.
The distribution generates a quiet and
efficient cleaning pulse.
The filter controller controls the
cleaning process.
Valve with
cleaning pipe
Explsion relief panel, unloads the
pressure at an explosion.
The cleaned air exits
through the outlet in
the top of the front
part of FilterMax DX.
The air stream is led down-
wards by the sloped roof of
FilterMax DX towards the
filter cartridges. The filter
media in the cartridges
collects the remaining
particles.
Collection chamber
leading down to the
dust container.
Dust collector
Filter
protection
panels.

19
FilterMax DX is marked: II 2/3 D 125 ° C
PRODUCT MARKING
CE-mark, see page 3.
Symbol according to European Commision
for EX-products.
II Product marking, explosive atmosphere.
2
3
D
125
° C
Equipment category 2. The product is designed to
be used in environments where the atmosphere could
be explosive as a result of mixing air with dust.
Applicable to the interior of FilterMax DX
Equipment category 3. FilterMax DX must not be
located in an environment with explosion risk.
Applicable to the exterior of FilterMax DX.
Dust
Maximum surface temperature
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10 111 2
1 2 3 4
230 V
120 V
100 V
0 V
S1 Connection box
Impeller rotation
direction
1. Turn on the compressed air supply to the cartridge filter.
Adjust to 0,6 MPa (6 bar, 87 psi) of pressure. Pressure of
0,4 to 0,6 MPa is the most typical setting for satisfactory
cleaning performance.
2. Close the regulating damper halfway,
see figure, page 17.
3. Teststart the fan without any explosive dust load.
Check fan impeller rotation. Refer to the rotation sticker on
the fan motor. Proper fan impeller rotation is extremely
important. Contact a qualified electrician if the impeller
rotation must be reversed.
NB! Follow the start instructions in the Instruction
Manual which comes with Nederman NCF EX fans.
4. Adjust the fan for the proper system airflow that is
desired by adjusting the regulating damper. The air flow
can be measured with a fixed airflow meter (or a pitot tube)
and a micro-manometer.
IMPORTANT! Too much airflow can cause electrical
system failure and dramatically reduce the life of the
filter element.
5. All the solenoid valves should open and close con-
tinuously with a set interval time between each cleaning
pulse (factory set of 30 seconds).
Check operation of the solenoid valves in the following way:
Set the pause time on 1 s (position 0 on S1 in the con-
nection box, see picture). NB! This is only a control setting
and should not be used for normal operation. Start the
system and count the number of air pulses. It should be
6 pulses per module.
NB! Return the pause time to the original value
after checking.
STARTING THE SYSTEM
WARNING!
Risk of personal injury!
Stand clear of blower fan exhaust area as
debris can be exhausted and cause injury.

20
FilterMax DX is designed for collecting and filtering explosive
and non-explosive dry dust. The filter should not be used for
filtering fumes from welding or cutting processes.
Explosive dusts are dry organic dusts and some metallic dusts.
The metallic dusts are aluminium, magnesium, chromium and
fine virgin dusts of other metals.
NB! The process must not be conditioned in a way that
it generates sparkles. For example: Extracting dust from
aluminium grinding or plastic grinding must not be mix-
tured with extracting dust from iron grinding.
FilterMax DX does not separate gases.
APPLICATIONS
At the combination low outside temperature and hygroscopic
(damp collecting) dust, there is a risk of self ignition with a
following explosion. At such conditions should be checked
that the dew point not will be passed during operation.
IMPORTANT!
To ensure correct function and minimize risk
situations it is important that FilterMax DX
only is used according to its intended use.
To ensure that the system will be safe, a risk
analysis must be done for each installation
and each intended use.
Please contact a qualified consultant company
for technical advice.
FilterMax DX must not be used for filtering dust
with an MIT which is lower than the surface
temperature of the pilot box, + 125 °C.
MIT = Minimum Ignition Temperature
RECOMMENDATIONS FOR PAUSE TIME SETTINGS
The pause time setting depends on the size of the filter (i.e. the
number of cartridges) and the load at which the filter is working.
Light load - A dust that is easy to clean off the filter cartridges,
such as dry stone dust or grinding dust.
Normal load - Applications such as welding fume or Light dusts
in heavy concentrations
CLEANING DURING OPERATION
FilterMax DX is in its standard design equipped with a fully automatic
compressed air cleaning of the filter cartridges. A piping system
directs, by a system of solenoid valves, air pulses of 100 ms into the
filter cartridges. The pause time between the air pulses is factory set
at 30 s, but can be set between 5 s and 90 s (S1). Shorter pause time
can be used if more than 1 module is used or if FilterMax DX is used
for heavy load.
Model / Dust load
FilterMax DX 3000
FilterMax DX 6000
FilterMax DX 9000
Normal
60 s
30 s
15 s
Light
90 s
60 s
30 s
The factory setting is 30 s for all FilterMax DX.
At light load the cleaning pressure could be reduced to
0.5 MPa (5 bar). Check that the filter pressure drop not
rises too quick. If so, the pause time could be reduced
with one step and the cleaning pressure could be
increased, but maximally to 0.6 MPa (6 bar).
MONITORING SYSTEM, SETTINGS