Nederman FilterMax DX, FilterMax DX 9000, FilterMax DX 3000, FilterMax DX 6000 Instruction Manual

INSTRUCTION MANUAL

ENGLISH

0
1

CAPTURE AT SOURCE

This Instruction Manual refer
only to FilterMax DX with the
following particular part no.

NO. 148405 / 00
2001-02-01

Installation

Start

Operation

Service

Repair

Spare Parts

Protocols

List of contents

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-shooting schedule
Spare parts
Accessories
Installation and service protocol 1
Installation and service protocol 2
Installation and service protocol 3
Installation and service protocol 4

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

2

R

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

Alf Jonasson, Product Manager

TECHNICAL DATA

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

0

0
1

Basic filter: 99% weight filtration BIA class C
1 module: 2400 - 3600 m
2 modules: 4800 - 7200 m
3 modules: 7200 - 10800 m
1 module: 60 m

2

2 modules: 120 m
3 modules: 180 m

3

/h (depending o load)

3

/h (depending on load)

3

/h (depending on load)

2
2

1

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 V AC, 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

0
1

3

IMPORTANT!

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.

DELIVERY CHECK

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)

F

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)

For FilterMax DX 6000 oand 9000
J. Additional filter unit, with relief panel

J. Additional filter unit, without relief panel

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).

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 impro­perly 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.

A

B

E

G

H

0
1

J

D

C

4

PRE-INSTALLATION

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 expan­sion bolts or equivalent fittings, the concrete floor must be
prepared accordingly.

FLAME AND PRESSURE RISK AREA

1,5 D

D

The deflector must be designed and
mounted in a way that makes it possible
to be proof against an explosion.

Width according to the document
"Dust Application Description"

45°

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.

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.

A

A = approximately
height of FilterMax DX

A

Length accordin to the document

"Dust Application Description"

View from above

A

Warning Sign example which can
be used to mark the risk area.

5

DIMENSIONS

G

OUTLET

ABC

3 MODULES

2 MODULES

INLET

1 MODULE

FE

153

D

H

1200

open angle 155°

120

50

20

1395
1545

1200

919

1050

1112

50 litres container

In/Outlet inner diameters (mm)

400

250

A
B
C
D

2590

E

3510
F
G
H

270

315

2685

2615

­3605

3535

­4525

-

-

2700
3620
4540

-

1195

-

315

­3690
4610
1195

390

185

500

2810
3730
4650

-

­4740
1195

440

6

MOUNTING INSTRUCTION

WARNING!

Risk of personal injuries
and/or product damages!

Use approved lifting equipment for unloading,
assembly and installation of the units.

0
1

M10 x 35 x 8

Use a schackle,
not a hook.

x 3

M16 x 40

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.

1. Mounting the dust collector

and extension legs.

x 34

M12 x 35

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.

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.

2. FilterMax DX is usually

anchored to a concrete foun­dation 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.

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.

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.

Inlopp

Utlopp

x 12

M10 x 35

7

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.

2. Loosen the nuts

on the filter holders.
Remove the filter
holders.

3. Handle the filter cartridges carefully to

avoid mechanical damage to the filter surface.

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.

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.

5. Hang the filter holders

on the screws.

6. Connect the earth plate

on 2 places as shown in
the picture.

NB! Toothed washers
must be used to ensure
the earth connection.

7. Fasten the nuts.

8. Shut the access door and

fasten the two fixing screws.

8

COMPRESSED AIR CONNECTION

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".

Compressed air tank, module no. 3

Water drain valve

Compressed air tank, module no. 2

Water drain valve

FilterMax DX
Control box

Pressure switch, must not
be mounted in zones with
explosive atmosphere
(accessory).

Service valve
(accessory)

Filter regulator, should be set
on 0,6 MPa (6 bar / 87 psi),
must be positioned in a frost
free environment
(accessory)

Compressed
air connection
1/2" - 1"

Compressed air tank, module no. 1

Water drain valve

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.

9

JP6

14 10119876532

0

1

ELECTRICAL INSTALLATION

IMPORTANT!

All electrical work must be done by a qualified electrician
with necessary knowledge of explosion proofed installations
according to local regulations.

WARNING!

Risk of personal injury!

Disconnect the electrical power
before servicing any electrical component.

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.

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.

Remove the
dummy plugs

Open the box with
a locking key and
a screw driver.

ACCESSORIES, ELECTRICAL CONNECTION

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

External START/STOP

Pressure switch, compressed air

High dust level

Pressure switch, high dP /
low airflow / simple dP control

Spare, not used

Fan motor protector

Explosion / Fire alarm

14 109876532

JP1

The accessories must be equipped with a
potential free contact

Connection block JP 6: Digital outputs

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

96 97

Dielectric detector PNP

132

P > 3 bar

Pressure switch

> P

Alarm device

Start contactor

Damper motor

Fan start equipment

(not a Nederman product)

10

WARNING!

Risk of personal injury!

Electric power connected!

ACTIVATING INPUTS AND OUTPUTS

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:

Selecting OFF, NC or 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.

or NC or NO

0

A

OFF

Blinking

1

0

1

X

Motor protector, fan

Push the button X.
Activated input: JP1: 6
Set OFF, NC or NO with the 0/1-button.

OFF NC NO

B

OFF

C

OFF

D

OFF

or NC or NO

Blinking

or NC or NO

Blinking

or NC or NO

Blinking

0

1

0

1

0

1

0

1

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

0

1

0

1

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

11

E

EA OFF

F

dF ON

G

dA 00

or NC or NO

or OFF or Int

00 - 60 s

0

1

0

1

0

1

0

1

0

1

0

1

Explosion / Fire alarm

Push the button X.
Activated input: JP1: 7
Set OFF, NC or NO with the 0/1-button

OFF NC NO

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.

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.

H

J

K

or OFF

LO ON

LINE 1

Slow green blinking during operation.
Fast green blinking during cleaning.

0

1

0

1

0

1

0

1

0

1

0

1

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

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).

12

EARTH CONTROL MEASURING

0
1

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.

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

6

1

2

8

7

4

3

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.

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.

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)

1.

2.

3.

9

10

Circuit card
FilterMax DX
Control Box

GND1

JP3
230

120
100

0

Disconnect at earth

control measuring

0

24

13

WIRING DIAGRAM

CONNECTION TO THE MAINS
CONNECTION OF:

• AFTER CLEANING DAMPER

• PRESSURE SWITCH (accessory)

• PILOT BOX

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.

JP6: Outputs
S1: Pause time
S2: Down time
S3: Remote
auto restart,

On A-alarm
Prevents A-alarm at broken
supply for service.

Pilot Box

1

2

34

Output

Input

1

2

34

Magnetic

door switch

Motor
Down time
damper

Open

1

NB! Down time

damper with spring
return should be
connected only to
JP6 no. 2 and no. 8.

Supply

Com

JP5

JP6

10
11

1
2

1
2
3
4
5
6
7
8
9

2 A

123456789

S1 S2 S3

Circuit card
FilterMax DX
Control Box

0

24

0

24

2

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.

10

JP1

3

> P

JP4

4
3
2
1

JP3

230
120
100

0

GND1

0

24

Connection of
2 or 3 pilot boxes,
see page 16.

Disconnect at
earth control
measuring

Mains-connection

100/120/230 V,

PE, 50/60 Hz

BASIC FUNCTIONS

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

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.

14

010
1

CONNECTION OF SEVERAL FILTERMAX DX TO ONE SYSTEM

LINE 2

0
1

pause time betweencleanings pause time between cleanings

2 s 2 s

0
1

2 s

LINE 1 LINE 3LINE 2

LINE 1

1

2

34

0
1

1

2

34

NB!NB!

1

1

2

34

2

34

0
1

NB!

LINE 3

1

2

34

1

2

34

pause time between cleanings

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.

JP5

1
2

JP6

1
2
3
4
5
6
7
8

9
10
11

123456789

S1 S2 S3

Circuit card
FilterMax DX
Control Box

JP1

10

Door

Pilot

control

JP4

4

{

3
2

-

1

+

JP3
230

120
100

0

1

34

1

34

1

34

1

34

4321

4
3
2
1

IN OUT

2

2

2

2

4
3
2
1

1

34

1

34

1

34

1

34

4321

4
3
2
1

IN OUT

2

2

2

2

4
3
2
1

1

34

1

34

1

34

1

34

4321

4
3
2
1

IN OUT

2

2

2

2

4

NB!

3
2
1

Set LINE 1, LINE 2 or LINE 3 with the
0/1-button on the Control Box.

15

CONNECTION OF 2 OR 3 PILOT BOXES

1

JP4

JP3
230

120
100

2

34

1

2

34

4
3
2
1

NB! Remove the clamp between 3 and 4

0

on the output contact before the cable
from the pilot box above is connected.

1

1

2

34

2

34

1

1

2

34

2

34

Total pressure, Pa

5000
4500

4000
3500

3000
2500

2000
1500

1000

500

0

0

1000 3000 5000 7000 9000 11000 13000 15000 17000

FANS

Air flow m

3

/h

Each FilterMax DX can be connected to
an existing central EX-fan or to an EX-fan
dimensioned specially for the system.

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 recom­mended for the whole electric system
including the fan.

16

DUCT DIMENSIONING AND SYSTEM INSTALLATION

Cleaning access point

30 - 45

After cleaning
damper

Explosion
damper or
explosion
unloader

A > 2,0 m

Flow meter

0
1

°

Nederman NEX D or DX-arm for
extracting dust in environments where
the atmosphere can be explosive

Nederman
NCF EX fan

NB! To adjust the air flow, a
regulating damper in the clean
air duct can be used.

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.

Inlet

1 module
2 moduls
3 moduls

Ø 250 / 315 mm Ø 315 / 400 mm
Ø 315 / 400 mm Ø 400 / 500 mm
Ø 400 / 500 mm Ø 500 mm

• 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 (approxi­mately 60° against the horizontal level) to the inlet on
FilterMax DX.

Outlet

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.

• 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.

17

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.

Filter
protection
panels.

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.

Explsion relief panel, unloads the
pressure at an explosion.

The air stream is led down­wards by the sloped roof of
FilterMax DX towards the
filter cartridges. The filter
media in the cartridges
collects the remaining
particles.

The cleaned air exits
through the outlet in
the top of the front
part of FilterMax DX.

Valve with
cleaning pipe

The filter cartridge seen from above

Collection chamber
leading down to the
dust container.

Dust collector

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.

18

PRODUCT MARKING

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

FilterMax DX is marked: II 2/3 D 125

CE-mark, see page 3.
Symbol according to European Commision

for EX-products.
II Product marking, explosive atmosphere.

°

C

125

STARTING THE SYSTEM

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.

2

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

3

Equipment category 3. FilterMax DX must not be
located in an environment with explosion risk.

Applicable to the exterior of FilterMax DX.

D

Dust

°

C

Maximum surface temperature

Impeller rotation
direction

WARNING!

Risk of personal injury!

Stand clear of blower fan exhaust area as
debris can be exhausted and cause injury.

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 con­nection 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.

S1

Connection box

19

APPLICATIONS

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 mix­tured with extracting dust from iron grinding.

FilterMax DX does not separate gases.

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

MONITORING SYSTEM, SETTINGS

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.

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

Model / Dust load

FilterMax DX 3000
FilterMax DX 6000
FilterMax DX 9000

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).

Light

90 s
60 s
30 s

Normal

60 s
30 s

15 s

20

CLEANING AFTER OPERATION

It is possible to choose cleaning after operation, that is when the fan
has stopped. This is more efficient than cleaning during operation
and is therefore recommended. The pause time at cleaning after

operation is always 15 s.
In cleaning after operation has been chosen, one has to set the desired

number of cleaning cycles (S 2), where one cycle means the cleaning of
the total number of filter cartridges, that is 6, 12 or 18 cartridges, depen­ding on the number of modules in operation. 2 - 3 cycles are recommen­ded depending on the dust load (light - normal) When cleaning after
operation it is recommended to use an after cleaning damper (see
accessories page 32).

S 3S 2S 1

1 2 3 4 5 6 7 8 9 10 111 2

1 2 3

4 5 6 7 8 9 10

1 2 3 4

230 V
120 V
100 V
0 V

A-ALARM FUNCTION

The A-alarm-function is always ON when the system operates,
which means if there are negative influences on the function
during operation, the A-alarm will release, that is LED no. 7
will show a red fixed light.

It is possible to choose the following functions for A-alarm by
setting S3. For fume/dust generating processes that can’t be
stopped immediately when a fault accurs it is recommended
that the A-alarm switch is set to 1 ON and that a clearly visible
alarm device is installed.
1 ON The system does not stop when the A-alarm

is activated. With exception for explsion/fire-alarm
and motor protection, fan. The system always stops
for these functions.
1 OFF The system stops automatically when the A-alarm
is activated.

0 1 s
1 5 s
2 10 s

S 1 PAUSE TIME

3 15 s
4 20 s
5 30 s
6 45 s
7 60 s
8 90 s
9 No cleaning

during operation,
is not recommended
at operation with
explosive dust.

1 2

S 3

ON

REMOTE AUTO RESTART

ON A-ALARM

0 0
1 1 cycle
2 2 cycles

S 2 DOWN TIME

3 3 cycles
4 4 cycles
5 5 cycles
6 6 cycles
7 7 cycles
8 8 cycles
9 9 cycles

REMOTE START

It is possible to choose the following functions for Remote start
by setting S3. For most filters that are remotly started from a
machine or a process eg. it is convenient to set the Remote
start switch S3 to 2 ON.
2 OFF When using remote start there is no automatic
restart when the fault has been rectified.
2 ON When using remote start there is automatic restart when
the fault has been rectified or after a power failure
(is recommended).

The remote start control should be connected to JP 1 and 9 or 10
(see page 10). If remote start is used, the system can not be stopped
with the 0/1-button on the Control Box.

21

MONITORING SYSTEM, GENERAL DESCRIPTIONS

0

1

0

1

1 2 3 4 5 6 7

The display on the Control Box gives information
about the number of operating hours, cleaning

process, alarm functions and possible faults.

Blinks when the cleaning
function operates.

0

1

0

1

1

The LED:s can indicate the following:
1, 2, 3, 4, 5 green fixed light: All functions normal
and correct
1, 2, 3, 4, 5 green fixed light alternating with blinking red:
The system operates. Incorrect function
has been rectified (alarm memory)
1, 2, 3, 4, 5 red fixed light: Incorrect function which
requires investigations.
6 yellow fixed light: Incorrect function which
requires attention.
7 red blinking light: Incorrect function which
requires immediate investigations.
1, 3, 4, 5 is only active after the inputs for the
accessories has been activated
(see page 11).

Fixed light when the
system operates.

0

1

1 2 4

r E

Both "point" and 1 blinks when cleaning after operation is in progress.

0

1

The total number of operating
hours are displayed.

0

1

0

1

0

1

0

1

1

r E is displayed when trying to stop

the system from the control box when
the system is remote started.

r E is displayed alternating with the

number of operating hours.

The system has stopped and the
cleaning after operation is active.
If the 0/1 button is pressed once
more the cleaning after operation
is stopped immediately.

22

MONITORING SYSTEM, FAULT INDICATIONS

0

1

0

1

Blinking

The fan motor overload protector is released.
Check the cause. Rectify the fault and reset
the motor protector. FilterMax DX always
stops when the motor protector is released.

0

1

0

1

0

1

0

1

0

1

0

1

Blinking

Possible faults:

1. The pressure drop over the filter is high.

2. The air flow in the system is too low.

• Check if the filter cartridges are saturated,
change if necessary.

• Check if any damper is not open enough.

• Check the inlet for dirt. Clean if necessary.

Low pressure in the compressed air supply.
FilterMax DX will not start.

FilterMax DX has stopped due to low com­pressed air pressure (less than 0,4 MPa (4 bar)).
FilterMax DX will not start until correct pressure

is resumed.

EA

1

0

1

0

0
1

Blinking

0
1

Blinkande

A-alarm! Means acute problems which could disturb
the function of the system. Action should be taken as
soon as possible. Call for a service technician.
Example:

• More than 1 valve is defective or does not work.
It is displayed which valves that are defective (Err 1,

2, 3, 4, 5 ....... 18 are displayed, alternating with the

number of operating hours).

• Electronic faults on the circuit card.

Fire or explsion alarm. Call for service
technician. Check the reason and do not start
the system until the fault has been rectified.

23

0

1

0

1

0

1

0

1

Blinking

0

1

0

1

Service requirements! Should be rectified
as soon as possible.
Example:

• One valve is defective or does not work. It is
displayed what valve that is defect (Err + the
defected valve no. (1 - 18) is displayed, switching
with the number of operating hours).

The door has been opened during
system operation. Shut the door.

r E A

0

0

1

1

0
1

0
1

Blinking

The door is open and FilterMax DX
will not start.

The dust collector is full.
Empty the collector.

r E A is diplayed (alternating with the

number of operating hours) in combination
with a motor error and a desplayed
A-alarm at remote controlling.

p F a i l

0

1

0

1

There has been a power failure.
Reset by pressing the 0/1 button. If
the filter is remotely started it will start
directly when the 0/1 button is pressed.

24

SERVICE INSTRUCTIONS

In order to ensure that the system continues to operate correctly,
the following should be checked at periodic intervals depending
on what kind of contaminations that are separated and the
amount of use. Defective and worn parts should be replaced
immediately.

EMPTYING THE DUST COLLECTOR

IMPORTANT!

Empty the dust collector when it is approximately
70 % full. If the dust is in a way that a self ignition risk
is possible the collector must be emptied more often.
Don’t let the collector overfill. It can cause poor filter
performance and cause an extensive clean up work due
to overflow of dust when removing the collector.

Normal EX-proofed working light is required for emtying
the collector.

Inspect how much the collector has been filled in the
beginning of the filtering process, to make it possible to
estimate a normal emptying interval.

1. Switch off the FilterMax DX.

2. Put a pallet, which can be operated by a lift truck, under

the dust collector.

3. Loosen the dust collector by realising the excentric locks.

Let the collector down to the pallet.

4. Empty the dust collector in a, for this purpose, designed

container. Disposal of dust should be in accordance with local
regulations. Before the collector is emptied, its pair of earth

tongs must be fastened on an earth point on the container.

5. Check that the gasket between FilterMax DX and the dust

collector not is damaged.

6. Put the dust collector back under FilterMax DX and fit it with

the excentric locks, Check that the gasket between FilterMax DX
and the collector is correctly fitted and seals after locking. Make
sure that the collector is earthed in a way that makes metalic
contact through the excentric locks. Also make sure that the
excentric locks not are damaged or bent. Fasten the pair of
earth tongs on one of the dust collector fixing bolts.

WARNING!

Risk of personal injury!

Use protective goggles, breathing
mask and gloves when doing servi­cing and repairing work inside the
system, specially when exchanging
the filter cartridges and emptying the
dust collector.

Before doing any service work,
clean the working place and every
surrounding area.

Avoid contact or exposure to dust as
much as possible during servicing or
maintenance.

Shut-off and bleed compressed air
supply before opening the inspection
door and servicing any compressed
air components.

Disconnect electrical power before
servicing.

The Control Box or Pilot Box must
not be opened or be disconnected
from cables if there is explosive dust
in the atmosphere or dust cover on
the boxes. In that case the boxes
must be cleaned.

If the Minimum Ignition Energy, MIE,
of the dust is less than 20 mJ, the
service personal must use shoes and
other clothes specially designed to be
used in explosion hazardous areas.
Tools used for service works on Filter­Max DX then also must be approved
for explosion hazardous areas.

CHECK WHEN EMPTYING THE DUST CONTAINER

Check if there is water (or oil) in the filter regulator collector.
In that case, the compressed air is not dry enough and there is a
risk to damage the filter cartridges. Check that the pressure is set to

0.4 - 0.6 MPa (6 bar, 87 psi). If there is water in the container, check
that there is no water in the pressure tank (tanks), by opening the
drain nipple on the right bottom side of the tank.

Filter regulator collector

25

SERVICE AFTER 1000 OPERATION HOURS,
BUT AT LEAST ONCE EVERY 6TH MONTH

• Check that all valves in the cleaning system operate properly. Count the
number of air pulses, 6 per module, that is 6, 12 or 18 per cycle.

• Check that the relief sheets on FilterMax DX not are damaged or blocked.

• Remove dust collections from the lower part of the clean air room.

• Remove dust collections on monitoring system and pilot box.

SERVICE AFTER 2000 OPERATION HOURS, BUT AT LEAST
ONCE A YEAR OR WHEN REPLACING FILTER CARTRIDGES

• Unscrew the inspection covers on top of the inlet and
outlet. Check the seals. Clean when necessary.

• Check that there is no water in the pressure tank
(tanks), by opening the drain nipple on the right
bottom side of the tank.

• Make a complete earth control measuring
(see instructions page 13)

• Take measures against possible corrosion on
FilterMax DX.

• Check that the conductive surface layers on the filter
cartridges not are damaged (specially important if the
dust ignition energy MIE is less than 10 mJ).

REPLACING THE FILTER CARTRIDGES AT
DAMAGE OR INSUFFICIENT FILTER FUNCTION,
BUT AT LEAST AFTER 6000 OPERATION HOURS

The filter cartridges are replaceable. They should be
replaced if the outer surfaces are damaged or if the air flow
through FilterMax DX is insufficient due to saturation of the
filter cartridges despite repeated cleaning.

Inspection covers

WARNING!

Risk of personal injury!

For FilterMax DX equipped with 2 or 3 modules
(12 or 18 filter cartridges), an approved lifting work
platform (see figure) has to be used when
exchanging the filter cartridges.

Instructions for replacing the filter cartridges,
see next page.

26

REPLACING THE FILTER CARTRIDGES

1. Switch off FilterMax DX.

2. Shut off and bleed the compressed air.

3. Unscrew the two fixing screws on the

access door. Use the enclosed T-key or a 10 mm
standard hexagon key. Open the door.

4. Loosen the nuts

on the filter holders.

5. Loosen the earth

plates from the filter
cartridge.

6. Remove

the filter
holders.

8. Hang the moun-

ting frame with the
plastic bag over the
plastic end of the filter
cartridge. Draw the
whole cartridge in
to the plastic bag.

9. Remove the mounting

frame and fold the plastic bag
in a way that the filter cartridge
will be completely enclosed
and sealed.

7. Draw a plastic

bag through the opening
in the enclosed mounting
frame, as the picture shows.

10. Proceed in the same way with the remaining

filter cartridges.

11. Inspect the filter housing and look for damages,

dust layers etc. Clean inside the filter housing. A vacuum
cleaner, approved for use in explosive environments, is
recommended.

12. Handle the new filter cartridges carefully to avoid damage.

13. Insert the new filter cartridges. NB! The mark on the

back end of the filter cartridge should be put on the angled
sheet-metal plate just inside the filter housing.

14. Hang the filter holders on the screws.

15. Fit the earth plates with tooth washers and fasten the nuts.

16. Use an Ohm-meter to check if the baskets in the filter

cartridges are connected to earth. Measure between the
basket and GND1 in the Connection Box (see also page 13).

17. Check the access door seal. Shut the door and

fasten the two fixing screws.

18. Turn on the compressed air supply and

set it to 0,4 - 0,6 MPa (6 bar, 87 psi).

27

TROUBLE-SHOOTING SCHEDULE

IMPORTANT!

• Turn off the compressed air supply

A

FilterMax DX will not start.

Are there any LED’s on the
controlbox panel that are on.

with the service valve before doing
any work on the cleaning system.

• Do not pressurise the system if the
air temperature is below the minimum
operating temperature (= -20
lower air temperatures the process
can be started and operated for a while
(approx. 15 min.) where-after the
system can be pressurised.

°

C). At

Possible faults
Control questions
Actions

NO

Check the fuses on the card and
the power supply to the card. If
the power supply and the fuses
are fully functional, contact your
nearest Nederman representative
for more assistence.

YES

B

FilterMax DX starts, but stops
after a while and the display
shows ERR + a digit.

Is the display showing ERR 0 ?

Is the A-alarm LED no. 7, on?

NO

Are you trying to remote start
FilterMax DX ?

NO

Contact your nearest Nederman
representative for advice.

YES

YES

Correct the error indicated by the
function LED’s, see page 23 - 24.

Check that the wiring is correct.
Closing 1 + 9 or 10 shall start
the filter.

YES

The cable connecting the controller
to the first pilot box is not properly
connected.

NO

C

FilterMax DX starts, but the fan
will not start.

Is the display showing ERR +
another digit than 0 ?

NO

Contact your nearest Nederman
representative for advice.

Check that the electrical wiring
for the fan start is done correctly
between 1 and output common
(10 or 11) on the outputs (block
JP6). See wiring diagram, page 14.

YES

There is an electrical fault in one
or more of the pilot valves. The
number/s shown after ERR are
the number of the faulty valve/s.

Shut the safety switch for the
compressed air. Replace the
pilot box.

28

The FilterMax DX pressure
resistance is high.

Is the cleaning system fully
functioning?

YESNO

D

Check the pressure of the com­pressed air. It should be 0,6 MPa
(6 bar, 87 psi).

Are there some valves that are
functioning?

NO YES

Go to B

The airflow is insufficient.

Is the pressure resistance high
( >1000-1500 Pa)?

YES

Go to D

Contact your nearest Nederman
representative for advice.

Go to F

NO

Check the pause time set on the
timer (see page 16). The default
value is 30 s. A heavy application
or a 2 - 3 module unit (12 - 18 filter
cartridges) will require shorter
times. A very light application can
use longer times.

If the cleaning has been adjusted
previously you may have to replace
the filter cartridges.

E

Has the airflow been satisfactory?

NO

Is the fan operating correctly?

Does the impeller rotate in the
right direction?

YES

Check the rotating direction of
the fan impeller. Compare with
the arrow on the label on the fan
motor. It is very important that
the rotation direction is right.
If the impeller rotates in the wrong
direction, the fan gives only 40 %
of its possible air volume. Contact
a qualified electrician if the im­peller rotation must be reversed.

YES

NO

Check if the system contains any
dampers and the position of these.
Open dampers to adjust the flow,
but don’t exceed the dimensioned
airflow for the filter unit.

Check that the filter unit’s inspection
panels are closed.

Check the fan for blocked outlet or
other damage.

Open the filter unit’s inlet inspection
door on the top of the inlet and
check for blockage, clean if
necessary.

If the inlet is blocked/partly blocked
by sticky dust/particles open the
inspection panel on the top of the
unit and clean the preseparator.

29

One or more (but not all) valves are
not operating correctly.

F

Does the display on the control
box show ERR + a digit?

YES

Go to

NO

B

G

Leaking compressed air system
(notified by sound)

Is the air temperature below 0 °C ?

NO YES

Check which valve is mal­functioning by listening. The valve

sequence is 4 - 5 - 6 - 1 - 2 - 3
(where 1 is to the left when the
door has been opened).

Dismantle the valve housing and
check that the little air hole in the

diaphragm not is blocked.
Change defective valves (spare

part) or repair them with a repair
set (spare part). Mounting/repairing
instructions comes with the spare
parts.

IMPORTANT!
Turn off the compressed air
supply with the service valve
(accessory) before doing any
work on the cleaning system.

If you have compressed air with a
dew point close to or higher then
the air temperature, the pilot valve
may freeze. An indication is that the
valve starts operating again when
the temperature increases.

IMPORTANT!

Do not pressurise the system if
the air temperature is below the
minimum operating temperature
(= -20

°

C). At lower air tempera­tures the process can be started
and operated for a while (approx.
15 min.) whereafter the system
can be pressurised.

Are the external connections
leaking?

YES

Repair the external connections.

NO

H

High emission. Abnormal emission
levels in the exhaust air.

Stop the system! Shut off the
compressed air and drain the tank.

Stop the system. Decrease the
system pressure to < 1 bar. Open
the access door and find the leak.

Shut off the pressure and drain the
tank.

Is a pulse-jet valve leaking ?

YES

Dismantle the valve and check for
contamination or damaged parts.
Clean and/or replace damaged
parts.

NO

Replace other damaged parts.

Are all cartridges properly installed?

NO

Install them properly.

YES

Look into the cartridges and check
if there are any traces of dust. Dust
on the clean side indicates a leak.
Replace damaged cartridges.

30

SPARE PARTS

Ordering Instructions

When ordering spare parts always
indicate the following.
A. Part No. and Control No.
(see FilterMax DX identification plate)
B. The spare part’s name and number
(see Spare Parts List)

C. Quantity of parts required.

13

19
18

Spare Parts List

Name
1 Filter cartridge, 6-pac
2 Circuit card
3 Control box, complete

incl. electric components

4 Repair set for pulse valve
5 Pulse valve
6 Door switch
7 Cleaning pipe
8 Cover with display and cicuit card

14

9 Transformer
11 Pilot valve
13 Inlet/Outlet Ø 250

Inlet/Outlet Ø 315
Inlet/Outlet Ø 400
Inlet/Outlet Ø 500

16 Pilot box
17 Dust collector
18 Door gasket
19 Relief panel

11
16

6

1

4

0

1

2

5

8

0

1

7

3

9

17

31

ACCESSORIES

NCF FANS

See fan diagram page 16. For more
information contact your nearest
Nederman representative.

ADAPTOR FOR DELOADING DUCT

For connecting a round deloading duct to FilterMax DX
relief panel. Is delivered with a drawing for
manufacturing a deloading duct.

Part no. 12372765

DUST COLLECTOR

50 litre.

Part no. 12372663

DUST COLLECTOR

Planed accessory. 50 liter,
with plastic bag, for low dust
loads of dangerous
substances.

INLET / OUTLET

With cleaning access
panel on the top.

Part no. Connection diameter
12372664 Ø 250 mm
12372665 Ø 315 mm
12372666 Ø 400 mm
12372667 Ø 500 mm

FILTER REGULATOR

Is used for setting the correct air pressure.
Separates dust in the pressured air why
it also protects the valves. Should be
installed in the compressed air pipe line.

Must be positioned in a frost free
environment

Part no. 12372064

FAN STARTER PTC

Consists of a contactor and an Y/D-start.
To be connected together with the after
cleaning damper in a way that stops the
fan when the damper has been closed.
For more information contact your
nearest Nederman representative.

DUST FEEDER

Planed accessory. For auto­matic transport of collected dust.
For normal or high dust loads.

PRESSURE SWITCH

Must not be mounted in an EX-zone.

Part no. 372142

AFTER CLEANING DAMPER

(Not a Nederman product) 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 damper should be mounted close
to the FilterMax DX inlet.

PRESSURE SWITCH

(Not a Nederman product). Is used to indicate
low airflow or high fall of pressure over the filter.

NB! If the switch should be mounted in an
EX-zone, it must be EX-proofed and marked
Ex II 3 D or Ex II 2 D.

32

INSTALLA TION AND SERVICE PROTOCOL 1

If controls gives results (for example measuring values) which
differ much from earlier results, this must be understood as a
warning signal and lead to more careful investigations.

FilterMax DX No.

Performed by

Control points

1. Delivery control (page 4)
A. Missing components
B. Transport damages

2. Installation control (page 5, 7 - 8)
A. Safe mounting / foundation
B. Fixing bolts / Traction forces
C. Wind / Snow load
D. Weight FilterMax DX / collected dust
E. Radiation heat
F. Convenience of service
G. Flame and pressure risk area
H. Approved lifting equipment
J. Conductible screw fittings

Date

Result Result Result Result Result Result

K. Inlet
L. Outlet
M. Dust collector
N. Dust feeder
O. 2 - 3 filter units
P. Filter cartridges
Q. Approved lifting platform
R. Duct fitting

3. Compressed air connection (page 9)
A. Service valve
B. Filter regulator
C. Pressure switch
D. Pressure 0,4 - 0,6 MPa
E. Dew point
F. Oil / Moisture
G. Cleaning compressed air connections

33

INSTALLA TION AND SERVICE PROTOCOL 2

FilterMax DX No.

Performed by

Control points

4. Duct dimensioning (page 17)
A. Duct diameters
B. Preseparator, EX-proofed
C. Inlet duct, length/inclination
D. Cleaning access covers
E. Explosion damper
F. Fire damper
G. After cleaning damper
H. Flow meter
J. NCF EX fan
K. NEX D / NEX DX-arms

5. Electrical installation (page 10-16)
A. Start contaktor

Date

Result Result Result Result Result Result

B. Overload protector
C. Safety switch, EX-proofed
D. After cleaning damper
E. Transformer
F. Pressure switch
G. Pilot box (1, 2 or 3)
H. Fan
J. Extern ST AR T/STOP
K. Pressure switch, compressed air
L. Pressure switch, high dP / low airflow
M. Pressure switch, simple dP control
N. Explosion / Fire alarm
O. Fan Starter
P. Dust feeder
Q. Sum alarm
R. A-alarm
S. Activating, in/outputs
T. Line-connection (page 15)

34

INSTALLA TION AND SERVICE PROTOCOL 3

FilterMax DX No.

Performed by

Control points

6. Earth control measuring (page 13)
A. GND1 - Inlet
B. GND1 - Inlet cleaning access cover
C. GND1 - Dust collector
D. GND1 - Dust collector adapter
E. GND1 - Filter cartridges
F. GND1 - Filter units
G. GND1 - Doors
H. GND1 - Relief panels
J. GND1 - Dust feeder
K. GND1 - Dust feeder adapter
L. Incoming duct - Incoming net earth
M. GND1 - Net earth extern

Date

Result Result Result Result Result Result

7. Monitoring system, settings
(page 20-21)

A. Cleaning during operation
B. Pause time setting
C. Cleaning after operation
D. A-alarm function
E. Remote control

8. Service instructions (page 25-27)
A. Emptying the dust collector
B. Water check filter regulator
C. Water check pressure tank
D. Magnet valves, function check
E. Relief panels
F. Cleaning access covers, cleaning
G. Remove dust, clean air room
H. Remove dust, control box
J. Remove dust, pilot box
K. Checking the filter cartridges
L. Replacing the filter cartridges

9. Corrosion
A. Take measures with grinding, primer

and improvement paint

35

INSTALLA TION AND SERVICE PROTOCOL 4

Point no. Date Note

36