Nederman filtermax c25 User manual

C 25
INSTRUCTION MANUAL
EXTRACTION AND FILTER SYSTEMS
144161(06)
2013-10-22
C 25
ENGLISH

C 25
CE, Declaration of conformity
IMPORTANT! Safety information
Delivery check
Technical data
Dimensions
Mounting instructions
Compressed air connection
Electrical installation
Earth control measuring
Fan diagram
Applications
Duct dimensioning / System installation
Operating description
Starting the system
Monitoring system, settings
Monitoring system, general descriptions
Monitoring system, fault indications
Service instructions
Trouble-shooting schedule
Spare parts
Accessories
Installation protocol
Service protocol 1
Service protocol 2
2
sida
3
3
3
4
4
5
6
7 - 8
9
9
9
10
11
12
12 - 13
14
15
16 - 17
18 - 20
21
22
23 - 24
25 - 28
29
List of contents
Starting
Settings
Service
Repair
Accessories
Protocols
Operating
Installation

C 25
3
This product is designed to meet the requirements of the relevant EC
directives.To maintain this status all installation, repair and mainte-
nance work must be carried out by qualied 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.
DELIVERY CHECK
FilterMax C 25 should be checked for any damage that
may have occured during transport. If there is damage the
carrier and your local Nederman representative should be
notied immediately.
For safe and reliable results assembling
work, electrical installation, use, service
and trouble-shooting should be performed
by qualied personnel. Special training
may also be necessary.
Please contact your nearest authorised
dealer or AB Ph. Nederman & Co. for techni-
cal advice.
IMPORTANT! SAFETY INFORMATION
Nederman FilterMax C 25 is designed for collecting and
ltering fume and non-explosive dry dust.
To guarantee the correct function and a minimal service
FilterMax C 25 must only be used for these purposes and
according to the instructions in this manual. The manual con-
tains important warning directions which have to be
read and followed.
Any functional disorders, especially those aecting the safety
of the machine, should be rectied immediately.
Christian Norman, Technical Manager
AB Ph. Nederman & Co.
P.O. Box 602
S-251 06 Helsingborg
Sweden
Declaration of conformity
We, AB Ph. Nederman & Co., declare under our sole responsi-
bility that the Nederman product:
- FilterMax C 25 serial 667 with accessories to which this declara-
tion relates, are in conformity with the following:
Directives
2006/42/EC, 2006/95/EC, 2004/108/EC, 87/404/EC
Standards
EN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4, EN
55011, EN 286-1
The technical manager, Christian Norman, is responsible for the
technical documentation.
For W3 products:
The products are approved by BGIA - Institut für Arbeitsschutz
der Deutschen Gesetzlichen Unfallversicherung (0905033).
BGIA
53757 Sankt Augustin
FOREWORD
To guarantee a correct function and a minimal service, it
is important to read and understand the information in this
instruction manual.
This product is designed to meet the requirements of the
relevant directives.To maintain this status all installation,
repair and maintenance work must be carried out by
qualied personnel using only original spare parts.
Contact the manufacturer or your nearest authorised
dealer for advice on technical service or if you require
spare parts.
Helsingborg, Sweden 2013-10-22

C 25
4
99% or 99,9 % (PTFE-lter) at 0,5 µm (after some time in operation)
4 x 12 = 48 m2 (Poly Web lter)
4 x 10 = 40 m2 (Poly Web antistatic lter)
PTFE Impregnated spun bound polyester (PW NS)
PTFE membrane laminated to spun bound polyester (PW PTFE)
Aluminium spun bound polyester (PWA)
Aluminium coated spun bound polyester, laminated with a PTFE membrane. (PWA PTFE)
1500 - 3000 m3/h (depending on load and application)
-20 °C to +50 °C
0 °C to +60 °C, not condensing
3 mm painted steel plate
0,4 - 0,6 MPa (4 - 6 bar, 58 - 87 psi), (0,5 MPa rec.), water and oil free
32 N-litres / cleaning pulse at 0,6 MPa (6 bar, 87 psi)
R 1/2" (DN 15)
3 kW (4 hp)
IP 54
24 V AC, maximum 60 VA
0 to -5 kPa, not overpressure
Lp Aeq, 30 s, 50 dB
66 dB(A)
454 kg
Filtration
Filter area
Filter material
Operating airow
Operating temperature
Process air (dry) temperature
Material description
Compressed air requirements
Compressed air consumption
Compressed air connection
Fan motor
Protection class
Relay voltage, accessory
Working pressure
Pulse noise
Noise level
Weight
TECHNICAL DATA
2163
559
518
20
800
50
Open door
max. 155°
1139
1343 763
1887
Ø315
Ø315
191
803
912
195
1527
Ø315
590
DIMENSIONS
Voltage 208 V 60 Hz 230 V 50 Hz 400 V 50 Hz 460 V 60 Hz 575 V 60 Hz 380 V 60 Hz
Current 11 A 10 A 6.1 A 5 A 4 A 6,1 A
1. Modication Kit 400 to 230V

C 25
5
MOUNTING INSTRUCTION
1139
800
50
20
Open door
max. 155°
559
518 min. 500
min. 100
FilterMax C 25
FilterMax C 25 should be installed indoors.
It should be located with consideration for easy hand-
ling of the collected dust and for convenience
of service and maintenance.
FilterMax C 25 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 tech-
nical data page 4):
• Total weight of FilterMax
• Max. weight of collected contamination
IMPORTANT! Location must be clear of all ob-
structions such as utility lines etc. Pay particular
attention to the anchor bolt location. Anchor bolts
(M16) must extend at least 60 mm above foundation.
If you intend to secure the unit by using expansion
bolts or equivalent ttings, the concrete oor must be
prepared accordingly.
Use adjusting pieces, if necessary, to get the lter unit
in level. Check with a spirit level.
WARNING!
Risk of personal injuries
and/or product damages!
Use approved lifting equipment for
unloading, assembly and installation
of the FilterMax C 25.
When FilterMax C 25 has been
installed an earth control measuring
must be done (see page 9).
Use a schackle,
not a hook.
Connect the
lifting slings
to 4 cabinet
lifting lugs.
In case of re
Switch o the safety switch and ensure that the fan
stops. Caution, if the door is opened, more oxygen
will be let into the lter and there is a risk that the re
intensity will increase.
Suitable re extinguisher is minimum class AB.
Material recycling
The FilterMax must after its life be dismantled to its
dierent material types which must be handled
according to relevant local regulations.
Use necessary personal
safety equipment.
Carry out the work in a carefully ventilated room with
ltered exhaust air. After nished work, the working
area must be cleaned.

C 25
6
COMPRESSED AIR CONNECTION
Filter regulator, should
be set on 0,4 - 0,6 MPa
(4 - 6 bar / 58 - 87 psi)
(accessory)
IMPORTANT!
• The compressed air supply pressure has
to be = 0,5 - 0,6 MPa (5 - 6 bar / 72 - 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 lter
performance.
• Purge compressed air lines to remove debris
before connecting to the compressed air
manifold.
• Do not use thread-sealing tape after the
lter regulator.
• Quick couplings throttle the air too much
and are not recommended.
• Turn o and bleed o 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.
Connect the compressed air supply line to the
compressed air connection of the lter. Use pipe
sealant on all compressed air connections.
Compressed air components
(accessories, see page. 22)
A shut o valve for service work and a lter regulator
should be installed in the compressed air pipe line
(NB the ow direction during the installation).
Important! the lter regulator must be positioned
in a frost free environment.
Recommended connection size: minimum 1/2".
Water drain valve
Compressed air tank
Sevice valve
(accessory)
Compressed
air connection

C 25
ELECTRICAL INSTALLATION
7
IMPORTANT!
All electrical work must be done by a qualied electrician ac-
cording to local regulations.
Connect FilterMax C 25 to the mains and connect other compo-
nents and accessories according to wiring diagram on this page.
The accessories must be equipped with a potential free contact.
A lockable safety switch should be tted on the
power supply cable.
P
WARNING!
Risk of personal injury!
• Disconnect the electrical power
before servicing any electrical component.
• All exposed conductive parts of the elec-
trical equipment and the machine shall be
connected to the protective earthing (see
wiring diagram).
• Models with multiple input voltages must
be congured at transformer, motor and
overload.
External START/STOP
Fan motor protector
High dust level
Alarm, 24 V AC
Down time damper (24 V AC)
Fan starter (24 V AC)
Alarm
Damper motor
Fan start equipment
24 V AC, common
Board power, 0 V
Power fuse
Board power, 19 V
Control system fuse
Inputs / outputs
380 V, 60 Hz (Saudi) 400 V, 50 Hz, 3-phase (Europe) 230 V, 50 Hz, 3-phase (Norwegian) 208 V, 230 V, 460 V, 60 Hz, 3-phase (UL, CSA)
Selecting OFF, nC or nO
Push the 0/1- 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.
ACTIVATING INPUTS AND OUTPUTS
The inputs or outputs should be activated when accessories
have been connected. Push the P-button to activate actual
input/output. The LED’s indicate, where appropriate, with red
blinking lights.
ACTIVATING THE MENU
Push the P-button and the 0/1-button for more than 4 seconds.
Voltage 208 V 60 Hz 230 V 60 Hz 380 V 60 Hz 400 V 50 Hz 460 V 60 Hz
Current 11 A 10 A 6,4 A 6.1 A 5 A

C 25
8
Blinking
AOFF
or nC or nO
OFF nC nO
Motor protector, fan
Push the P-button.
Activated input: no. 2
Set OFF, nC or nO with the 0/1-button.
DLO ON
or OFF
Local START/STOP
Push the P-button.
Inactivates the start/stop button on the control box.
Only remote start is possible in OFF-position.
Set On or OFF with the 0/1-button.
CdA 00
00 - 60 s
Down time damper delay
Push the P-button.
Activated output: no. 7
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.
BOFF
or nC or nO
Blinking
High dust level
Push the P-button.
Activated input: no. 3
Set OFF, nC or nO with the 0/1-button.
OFF nC nO
NO is preset at delivery.
OFF is preset at delivery.
On OFF
Setting the pause time
(pt) see page 12.

C 25
When the FilterMax C 25 has been installed and
during maintenance work the earthing shall be mea-
sured.
9
EARTH CONTROL MEASUREMENT
Earth control measuring must only be done
by a person with necessary knowledge.
IMPORTANT!
All metal parts of the lter unit must be
earthed reciprocally and connected to earth.
The measuring is done between GND (see page 7)
and the following components on FilterMax C 25. Dis-
connect protection earth from GND before measuring.
1. Filter module
2. Door
3. Dust container
4. Filter cartridges (only antistatic Poly Web lter)
Reconnect protection earth to GND.
Nederman FilterMax C 25 separates for instance
welding fume, metal oxides, talcum, lime stone, paint
powder and grinding dust.
FilterMax C 25 must not be used for separating
explosive contaminations.
Explosive dusts are dry organic dusts and some
metallic dusts.The metallic dusts are, for example,
aluminium, magnesium, titanium, chromium and
ne virgin dusts of other metals. Welding fumes from
these metals are not explosive, but grinding dust is a
problem. Please contact your Nederman representa-
tive in case of doubts.
Various combinations of semi combustible fumes/
dusts (oil, grease) and sparks can cause res when
grinding or welding.The most important action is to
prevent sparks from entering the extraction devices.
Secondly it is very important to perform regular clea-
ning of the extraction arms/devices and the
duct system.
FilterMax C 25 does not separate gases.
APPLICATIONS
WARNING!
Risk of personal injury!
• In some countries the puried air must not be recycled in
the workshop if FilterMax C 25 is used to separate welding
fume or some contaminations that may be a health hazard.
Risk of re or explosion!
• Do not use FilterMax C 25 to separate explosive
fume or dust.
• Grinding, welding or other hot works on the lter exterior
or inlet must not be done without cleaning and stopping
the operation.
• Connect a re alarm to FilterMax C 25, which means
the lter will stop at a possible re.
• Care should be taken when working with painted or oiled
material. Consult your Nederman representative
for advice.
• FilterMax C 25 must not be exposed for burning/glowing
material.
• At high risk of re a re extinguisher should be installed.
Total pressure
(Pa)
FAN DIAGRAM
Air ow (m3/h)
clean lters
Working pressure

C 25
10
30 - 45°
DUCT DIMENSIONING AND SYSTEM INSTALLATION
Cleaning access point
Cleaning access point
NB! To adjust the air ow, a re-
gulating damper in the clean air
duct can be used.
Nederman Original
Fume Extractors with
automatic dampers
After cleaning
damper
The inlet on the
opposite side is
used as a cleaning
and inspection
access point.
Recommendations
• To avoid pressure losses and dust deposits in the sys-
tem it is important to use the correct duct diameter. The
transport velocity shall be at least 10 - 12 m/s
for fume and 15 - 20 m/s for dust. Take velocity in
to account when choosing the duct diameters.The velo-
city should never decrease en route to FilterMax
C 25. The following duct diameters can be used for
the connection to FilterMax C 25: Ø 250 mm for the inlet
and Ø 315 mm for the outlet.
• Use long radius bends and no t-pieces.
• Install plenty of cleaning access points in the
ducting system before FilterMax C 25.
• 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 re dampers when the duct system is
passing from one re zone to another. NB! Fire
dampers do not stop explosions!
• Install a ow meter in the outlet duct (at least
3 m from the lter outlet).
• If there is a signicant re risk, it is better to install
several small systems then one large system.
• Install a sparktrap to prevent sparks or burning/
glowing material from entering the FilterMax C 25.
• At welding work on oiled material the lter cart-
ridges should be treated with ne lime powder (ap-
prox. 60 g) before the rst start.
Cleaning
access point
WARNING!
Fire risk!
• Grinding, welding or other hot works on the lter ex-
terior or inlet must not be done without cleaning and
stopping the operation.
• Connect a re alarm to the lter controling processor,
which means the lter will stop at a possible re.
• Care should be taken when working with painted
or oiled material. Consult your Nederman repre-senta-
tive for advice.
• FilterMax C 25 must not be exposed for burning/glo-
wing material.

C 25
11
OPERATING DESCRIPTION
The lter media
in the cartridges
collects the
particles.
The contaminated air is led
through the inlet and then distribu-
ted downwards towards the lter
cartridges.
Outlet duct Valve with
cleaning pipe
Built-in connection box
with transformer, relay and
motor protector.
The cleaned air
exits through the
built-in fan to the
outlet duct.
Dust container
Built-in fan
Compressed
air tank
Controller with display
Valve with cleaning pipe
The lter cartridge seen from above
The lter cartridges are cleaned one by one
with powerful air pulses. The air pulses are
distributed into the slot shaped outlet of the
lter cartridges. This generates a quiet and
ecient cleaning pulse.
The lter controller controls the cleaning
process.

C 25
12
Regulating
damper
STARTING THE SYSTEM
1. Turn on the compressed air supply to FilterMax C 25.
Adjust to 0,5 - 0,6 MPa (5 - 6 bar, 72 - 87 psi) of pressure.
2. Close the regulating damper halfway.
3. Important! Check fan impeller rotation direction in the
following way:
• Loosen the xing screws on the access door.
• Start the FilterMax C 25.
• Stop the FilterMax C 25.
• Open the access door and check through the fan inlet
the impeller rotation direction.
Contact a qualied electrician if the impeller rotation
must be reversed.
4. Adjust the fan for the proper system airow that is
desired by adjusting the regulating damper. The air ow
can be measured with a xed airow meter (or a pitot tube)
and a micro-manometer.
IMPORTANT! Too much airow can dramatically reduce
the life of the lter element.
5. All the solenoid valves should open and close con-tinuous-
ly with a set interval time between each cleaning pulse (facto-
ry set of 60 seconds). Check operation of the solenoid valves
in the following way: Set the pause time on tst (see below).
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 4 pulses.
WARNING!
Risk of personal injury!
If outlet duct is not mounted, stand clear of
blower fan exhaust area as debris can be
exhausted and cause injury.
Setting the pause time
Push the P-button until pt is shown in the display.
Set one of the following values for pause times with
the 0/1-button. tst = test position, all valves will be
opened 1 time with 1 s interval.
pt 30
MONITORING SYSTEM, SETTINGS
CLEANING DURING OPERATION
FilterMax C 25 is in its standard design equipped with a fully auto-
matic compressed air cleaning of the lter cartridges. A piping sys-
tem directs, by a system of solenoid valves, air pulses of 100 ms into
the lter cartridges. The pause time between the air pulses is factory
set at 60 s, but can be set between 5 s and 90 s.
RECOMMENDATIONS FOR PAUSE TIME SETTINGS
The pause time setting depends on the load at which the lter is working.
Light load - A dust that is easy to clean o the lter cartridges, such as dry
stone dust or grinding dust.
Normal load - Applications such as welding fume or light dusts in
heavy concentrations.
Heavy load - Typically metal cutting with laser or plasma and
heavy welding.
With light load the cleaning pressure could be reduced to 0.5 MPa
(5 bar). Check that the lter pressure drop does not rise too quick.
If so, the pause time could be reduced with one step and the cleaning
pressure could be increased, but maximum to 0.6 MPa (6 bar).
Heavy
30 s
Normal
60 s
Light
90 s
Load
The paus time is factory set at 60 s.
tst
10 s
15 s
20 s
30 s
45 s
60 s
90 s
- No cleaning
during operation

C 25
13
Setting the cleaning cycles
Push the P-button until dt is shown in the dis-
play. Set the desired number of cleaning cycles
with the 0/1-button.
0
1 cycle
2 cycles
3 cycles
4 cycles
5 cycles
CLEANING AFTER OPERATION
It is possible to choose cleaning after operation, that is when the fan
has stopped. This is more ecient than cleaning during operation
and is therefore recommended. The pause time at cleaning after
operation is always 15 s.
If cleaning after operation has been chosen, one has to set the desired
number of cleaning cycles, where one cycle means the cleaning of all
lter cartridges. 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 22).
ALARM FUNCTION
The alarm-function is always ON when the system operates,
which means if there are negative inuences on the function
during operation, the A-alarm will release, that is LED no. 4 will
show a red blinking light.
Setting the alarm-function
Push the P-button until dL is shown in the display. Choose any
of the functions Go or StP with the 0/1-button. For fume/dust genera-
ting processes that can’t be stopped immediately when
a fault accurs it is recommended to set Go and that a clearly
visible alarm device is installed.
Go: The system does not stop when the alarm is activated,
with exception for motor protection and with the access door open.
StP: The system stops automatically when the alarm is activated.
REMOTE START
It is possible to choose the functions Aut or OFF with the 0/1-button. For
most lters that are remotly started from a machine or a process eg. it is
convenient to choose Aut.
The remote start control should be connected to strip no. 1 and 5 (see
page 7). If remote start is used, the system can not be stopped with the
0/1-button. The text rE is shown in the display for a short time.
dt 3
or Go
rE Aut Remote start, setting
Push the P-button until rE is shown in the display.
Choose Aut or OFF with the 0/1-button.
OFF: When using remote start there is no automatic
restart when a fault has been rectied. The remote started
mashine must be stopped and the FilterMax C 25 must be
reset by one push on the start button before a new remote
start can be done.
Aut: When using remote start there is automatic restart
when a fault has been rectied or after a power failure.
or OFF
dL StP

C 25
1 2 4
r E
14
1 2 3 4
MONITORING SYSTEM, GENERAL DESCRIPTIONS
Blinks when the cleaning func-
tion operates.
Fixed light when the
system operates.
1
The display on the control box gives information
about the number of operating hours, cleaning
process, alarm functions and possible faults.
The total number of operating
hours are displayed.
r E is displayed when trying to stop
the system from the control box when
the system is remote started.
Both "point" and 1blinks when cleaning after operation is in progress.
1
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.
The LED:s can indicate the following:
1, 2, 3______ green xed light: All functions normal and
correct
1, 2, 3______ green xed light alternating with blinking red:
The system operates. Incorrect function has
been rectied (alarm memory)
1, 2, 3______ red xed light: Incorrect function which requires
investigations.
4__________ red blinking light: Incorrect function which
requires immediate investigations.
1, 2, 3 ______is only active after the inputs for the accessories
has been activated (see page 7).

C 25
15
r E A
Blinking
The fan motor overload protector is released.
Check the cause. Rectify the fault and reset the
motor protector. FilterMax C 25 always stops when
the motor protector is released.
Blinking
r E A is diplayed (alternating with the number of
operating hours) in combination with a motor error
and a desplayed alarm at remote controlling.
The pressure drop over the lter is too high.
• Check that the cleaning system is fully functioning.
• Check the compressed air. The pressure should be
0.5 - 0.6 MPa (5 - 6 bar / 72 - 87 psi).
• Check the pause time (factory set at 60 s,
see page 12).
door
Blinking
The door has been opened during system
operation. Shut the door.
Blinking
The dust container is full. Empty the container.
door
The door is open and FilterMax C 25 will not start.
Blinking
MONITORING SYSTEM, FAULT INDICATIONS AND ALARMS
SERVICE
INSTRUCTIONS
In order to ensure that the system con-
tinues to operate correctly, the points
on page 16 - 17 should be checked at
periodic intervals depen-ding on what
kind of contaminations that are sepa-
rated and the amount of use. Defective
and worn parts should be replaced
immediately. Also see Service Protocol,
page 23 - 29.
WARNING!
Risk of personal injury!
• Use protective goggles, breathing mask and
gloves when doing servicing and repairing work inside the sys-
tem, specially when replacing the lter cartridges and emptying
the dust container.
• Avoid contact or exposure to dust as much as possible during
servicing or maintenance.
• Shut-o and bleed compressed air supply before opening the
inspection door and servicing any compressed air components.
• Disconnect electrical power before servicing.
Err 0
See B, Trouble-shooting Schedule, page 18.
or another digit
If an external alarm
is installed
(accessory/W3) and is
activated,
see information below:

C 25
16
SERVICE AFTER 1000 OPERATION HOURS,
BUT AT LEAST ONCE EVERY 6TH MONTH
• Check that all valves in the cleaning system operate properly. Set the pause time on tst.
Start the system and count the number of air pulses, 4 per cycle.
• Remove dust collections from the lower part of the clean air room.
• Open the inspection cover on the opposite side of the inlet. Clean when
necessary.
• Check that there is no water in the pressure tank, by opening the drain
nipple on the right bottom side of the tank.
• Check the lter cartridges. They should be replaced if the outer
surfaces are damaged or if the air ow through FilterMax is insucient
due to saturation of the lter cartridges despite repeated cleaning.
• Earth control measurement (see page 9)
GND - Filter unit
GND - Dust container
GND - Filter cartridges (only on Poly Web antistatic lter)
GND - Doors
Inspection cover
CHECK WHEN EMPTYING THE DUST CONTAINER
Filter regulator
container
Check if there is water (or oil) in the lter regulator. In that case, the compressed
air is not dry enough and there is a risk of damage to the lter cartridges. Check
that the pressure is set to 0.5 - 0.6 MPa (5 - 6 bar, 72 - 87 psi). If there is water
in the lter regulator container, check that there is no water in the pressure tank,
by opening the drain nipple on the right bottom side of the tank.
SERVICE AFTER 2000 OPERATION HOURS, BUT AT LEAST
ONCE A YEAR OR WHEN REPLACING FILTER CARTRIDGES
IMPORTANT!
Empty the dust container when it is approximately 70 % full.
Do not let it overll. It can cause poor lter performance and
cause an extensive clean up work due to overow of dust
when removing the container.
Normal working light is required for emtying the container.
Inspect how much the container has been lled in the beginning
of the ltering process, to make it possible to estimate a normal
emptying interval.
1. Switch o the FilterMax C25.
2. Loosen the dust container by realising the excentric locks. Let the container down on the oor.
3. Tie the plastic bag with a string according to picture.
4. Remove the plastic bag with impurities. Disposal of dust should be in accordance with local
regulations. Make sure no impurities get into the environment.
5. Check that the gasket between the lter unit and dust container is not damaged.
6. Put a new plastic bag in the dust container.
7. Put the dust container back under the lter and t it with the excentric locks, Check that the
gasket between the lter and container is correctly tted and seals after locking.
EMPTYING THE DUST CONTAINER
2
3
45
Use protection goggles, breathing
protection and gloves when
emptying the dust receptacle.

C 25
17
REPLACING THE FILTER CARTRIDGES AT DA-
MAGE OR INSUFFICIENT FILTER FUNCTION, BUT
LATEST AFTER 6000 OPERATION HOURS
The lter cartridges are replaceable. They should be replaced
if the outer surfaces are damaged or if the air ow through
FilterMax C 25 is insucient due to saturation of the lter
cartridges despite repeated cleaning.
1. Switch o the FilterMax C 25.
2. Shut o and bleed the compressed air.
3. Unscrew the two xing screws on the
access door. Use the enclosed T-key or a 10 mm
standard hexagon key. Open the door.
5. Remove the
lter holders.
6. Draw an antistatic plastic
bag through the opening in the
enclosed mounting frame, as
the picture shows.
7. Hang the mounting
frame with the plastic bag
over the plastic end of the
lter cartridge. Draw the
whole cartridge in to the
plastic bag.
8. Remove the mounting frame
and fold the plastic bag in a way
that the lter cartridge will be
completely enclosed and sealed.
9. Proceed in the same way with the
remaining lter cartridges.
10. Inspect the lter housing and look for damage,
dust layers etc. Clean inside the lter housing.
A vacuum cleaner is recommended.
11. Handle the new lter cartridges carefully to avoid
damage.
12. Insert the new lter cartridges. NB! The mark on the
back end of the lter cartridge should be put on the angled
sheet-metal plate just inside the lter housing.
13. Hang the lter holders on the screws and
fasten the nuts.
14. Check the access door seal. Shut the door
and fasten the two xing screws.
15. Turn on the compressed air supply.
4. Loosen the nuts
on the lter holders
but don’t screw them
o completely.

C 25
FilterMax C 25 will not start.
A
NO YES
Is text dOOr on the display?
18
TROUBLE-SHOOTING SCHEDULE
IMPORTANT!
• Turn o the compressed air supply 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 °C). At lower air tem-
peratures the process can be started and operated for a while
(approx. 15 min.) whereafter the system can be
pressurised.
Check the power supply and the
fuses in the connection box. If
the power supply and the fuses
are fully functional, contact your
nearest Nederman representative
for more assistence.
YES
NO
Are there any LED’s on the con-
trolbox panel that are on.
Correct the error indicated by the
function LED’s, see page 15.
YES
NO
Is the A-alarm LED no. 4, on?
Contact your nearest Nederman
representative for advice.
Possible faults
Control questions
Actions
NO
Is the display showing Err +
another digit than 0 ?
YES
Contact your nearest Nederman
representative for advice.
There is an electrical fault in one
or more of the pilot valves.The
number shown after Err are the
number of the faulty valve.
• Depressurise the system and
empty the compressed air tank.
• Switch o the power supply.
• Loosen the operation panel
from the access door and open
the box.
• Replace the pilot valve coil card
(spare part no. 13)
FilterMax C 25 starts, but stops
after a while and the display
shows Err + a digit.
B
Check that the access door is
closed and the door switch not
is damaged.

C 25
19
NO YES • Check if the system contains any
dampers and the position of these.
Open dampers to adjust the ow,
but don’t exceed the dimensioned
airow for the lter unit.
• Check that the lter unit’s inspec-
tion cover is closed.
• Check the fan for blocked outlet
or other damage.
• Clean the inlet duct.
• Check that the dust container
is tight.
• Check that the duct system not
has any other opening beyond the
inspected ones.
NO
YES
Is the fan operating correctly? Does
the impeller rotate in the right
direction?
Contact your nearest Nederman
representative for advice.
Has the airow been satisfactory?
NO
The airow is insucient.
Go to C
YES
Is the pressure resistance high
( >1000-1500 Pa)?
Check the rotating direction of the
fan impeller. 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.
Check in the following way:
• Loosen the xing screws on the
access door.
• Start the FilterMax C 25.
• Stop the FilterMax C 25.
• Open the access door and check
through the fan inlet the impeller
rotation direction.
Contact a qualied electrician if the
impeller rotation must be reversed.
D
YES
NO
The FilterMax C 25 pressure
resistance is high. C
Are there some valves that are
functioning?
Go to E
Go to B
NO YES
Is the cleaning system fully
functioning?
If a dP-control is installed, see
instructions for this product re-
garding the adjustment of cleaning
the system.
Otherwise, check the pause time set
on the timer (see page 12).
The default value is 60 s. A heavy
application will require shorter times.
A very light application can use
longer times.
Check the pressure of the com-
pressed air. It should be 0.5 - 0.6
MPa (5 - 6 bar, 72 - 87 psi).
If the cleaning has been adjusted
previously you may have to replace
the lter cartridges.

C 25
NO
YES
NO
YES
Are the external connections
leaking?
Stop the system. Decrease the sys-
tem pressure to < 1 bar. Open the
access door and nd the leak.
Shut o the pressure and drain the
tank.
Is a pulse-jet valve leaking ?
Dismantle the valve and check for
contamination or damaged parts.
Clean and/or replace damaged
parts.
Replace other damaged parts.
Repair the external connections.
G
Leaking compressed air system
(notied by sound)
F
NO
YES
Go to BNO YES
Is the air temperature below 0 °C ?
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 temperature is below the
minimum operating temperature
(= -20 °C). At lower air tempera-
tures the process can be started
and operated for a while (approx.
15 min.) whereafter the system
can be pressurised.
Check which pulse-jet valve is mal-
functioning by listening.The valve
sequence is 1, 2, 3, 4 (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 no. 5).
IMPORTANT!
Turn o the compressed air
supply with the service valve (ac-
cessory) before doing any work
on the cleaning system.
20
YES
NO
Install them properly.
Look into the cartridges and check
if there are any traces of dust. Dust
on the clean side indicates a leak.
Replace damaged cartridges.
Abnormal dust levels in the exhaust
air.
H
Stop the system! Shut o the com-
pressed air and drain the tank.
Are all cartridges properly installed
(check packings)?
A valve is not operating correctly
(but there are functioning valves).
Does the display on the control box
show Err + a digit?