Fluid Filtration AF 113 G3 Setup guide

Translation of original instructions with installation instructions
Automatic backflush filter AF 113 G3
with internal pressure cleaning and integrated cyclone effect
Material No. of Instruction Manual
70310590

Page 2
Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
1 Contents
1Contents...................................................................... 2
2General safety instructions....................................... 3
2.1 Safety instructions for installation and
operating personnel.......................................... 3
2.2 Warning structure.............................................. 3
2.3 Warning symbols used...................................... 3
2.4 Other symbols used.......................................... 3
3Glossary...................................................................... 4
4General information................................................... 4
4.1 Manufacturer..................................................... 4
4.2 Information about the Instruction Manual.......... 4
4.3 ATEX type key.................................................. 4
5Intended application .................................................. 5
6Functional description............................................... 5
6.1 Process principle of the AF 113 G3 .................. 5
6.2 Main components of the AF 113 G3 ................. 6
6.3 Functional principle of the AF 113 G3............... 6
7Technical data............................................................ 7
7.1 General data of the AF 113 G3 (without
options)............................................................. 7
7.2 Order-specific data............................................ 7
7.2.1 Name-plate for filter with Ex protection.. 7
7.2.2 Name-plate for filter without Ex
protection............................................... 7
8Transport and storage............................................... 7
9Assembly instructions............................................... 7
9.1 Installation......................................................... 8
9.2 Installing the pipes and selecting the pump ...... 8
9.3 Mechanical installation...................................... 8
9.4 Electro-pneumatic connections......................... 9
9.4.1 Connection to customer's controller....... 9
9.4.2 Connection to FG controller (optional)... 9
9.5 Control variants of the AF 113 G3................... 10
9.5.1 Control variant 1 .................................. 10
9.5.2 Control variant 2 .................................. 10
10 Start-up ..................................................................... 10
10.1 Functional test................................................. 10
10.2 Operating settings........................................... 11
11 Normal operation ..................................................... 12
11.1 Rinsing the drain line ...................................... 12
11.2 Rinsing the cleaning line................................. 12
12 Shutting down the automatic filter......................... 12
12.1 Temporary shut-down..................................... 12
12.2 Prolonged shut-down (> 48 h)......................... 12
12.3 Emergency shut-down .................................... 12
13 Notes on cooling lubricant filtration....................... 12
14 Troubleshooting....................................................... 12
15 Maintenance..............................................................13
15.1 Inspection and maintenance schedule............13
15.2 Removing the filter insert ................................14
15.3 Cleaning the filter............................................15
15.3.1 Cleaning the filter insert.......................15
15.3.2 Cleaning the filter housing ...................15
15.4 Replacing the segmented element..................16
15.5 Replacing the element seals and guides.........19
15.6 Replacing the backflush channel moulding z ..19
15.7 Replacing the shaft seals and guide ...............20
16 Exploded view ..........................................................22
17 List of parts...............................................................23
18 Spare parts................................................................25
19 Declaration of incorporation ...................................26
20 Declaration of conformity........................................27
21 Index..........................................................................31

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Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
2 General safety instructions
2.1 Safety instructions for installation and
operating personnel
This Instruction Manual contains important safety
instructions which must be heeded at all times during
installation, normal operation and maintenance.
Non-observance can result in the following risks to persons
and the environment as well as in damage to the machine or
system:
Failure of critical functions of the machine or system or
of its component parts.
Danger to persons from electrical or mechanical effects
as well as from chemical reactions.
Danger to the environment owing to the leakage of
hazardous substances.
Before installation/start-up:
•Read the Instruction Manual carefully.
•Make sure that installation and operating personnel are
adequately trained.
•Make sure that the contents of the Instruction Manual
are fully understood by the responsible persons.
•Define areas of responsibility and competence.
•Prepare a maintenance schedule.
During operation of the system:
•Keep the Instruction Manual handy at the place where
the system is used.
•Heed the safety instructions. Always operate the
machine/system in accordance with its ratings.
If in doubt:
•Consult the manufacturer.
2.2 Warning structure
Where possible, warnings are structured according to the
following system:
Signal word
Possibly
with
symbol
Nature and source of the danger
Potential consequences of non-
observance.
•Action to avert the danger.
2.3 Warning symbols used
DANGER!
Immediate danger!
Non-observance will result in serious or fatal injury.
WARNING!
Potentially dangerous situation!
Non-observance can result in serious or fatal injury.
CAUTION!
Potentially dangerous situation!
Non-observance can result in minor or moderate
injuries.
CAUTION! (without a symbol)
Potentially dangerous situation!
Non-observance can result in property damage.
2.4 Other symbols used
Danger from high voltage
Danger information about explosion
protection
Information about environmental protection
Wear protective clothing!
Wear goggles!
Wear a respirator!
Hand symbol:
Indicates general information and
recommendations
•
Bullet:
Indicates the order in which actions are to be
carried out

Arrow:
Indicates responses to actions

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Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
3 Glossary
Aerosol:
Distribution of minute liquid droplets (or solid particles) in a
gas.
Agglomerate:
Structure made up of several small particles which have
formed a ball (conglomerated) as a result of physical forces.
Cleaning:
The segmented element is cleaned. It is turned for this
purpose. The filtered fluid or the external medium flows
outward through the segmented element and cleans the
segments one at a time.
Concentrate:
Quantity of residues enriched with solids. Is discharged from
the filter periodically. Further treatment may be necessary,
depending on the application.
Cooling lubricant:
Cooling lubricant acc. to DIN 51385.
Differential pressure (delta p):
Difference between the pressure on the dirty side and
the clean side.
Draining:
The drain valve is opened. The solids that have collected in
the collection cone are discharged.
Filter cake:
Layer that is built up by the solids retained on the surface of
the segmented element.
Filtered fluid:
Substance that is filtered.
Filtration mode:
The automatic filter operates normally and the valves are
closed.
Homogenisation:
A system of substances is given a uniform composition.
Initial differential pressure:
Differential pressure at the start of the filtration process
(when the segmented element is “clean”).
Precontrol:
5/2-way magnetic valves actuated by the controller, which
switch pneumatic control valves.
Segmented element:
Cylindrical structure consisting of two concentric, profiled
elements. The actual filter medium is located between the
profiled elements. The suspension that must be filtered
flows inward. Solids are retained on the outer surface of the
segmented element.
Siphon:
U-shaped pipe. A siphon cannot be discharged without a
valve.
Suspension (raw suspension):
System of substances that must be filtered, generally
consisting of solids in a liquid.
4 General information
4.1 Manufacturer
Filtration Group GmbH
Schleifbachweg 45
D-74613 Öhringen
Phone [phone]
Fax [phone]
[e-mail]
www.filtrationgroup.com
4.2 Information about the Instruction Manual
FG Mat. No.: .......................................................70310590
Date: ....................................................................23.01.18
Version: ..........................................................................07
4.3 ATEX type key
II
2
G
T3
1.
2.
3.
4.
1.
II
Valid for use above ground
2.
Use in:
Zone 1
2
3.
Atmosphere
G = Gas
G
4.
T3 = The maximum surface temperature on the
filtration device is 200°C.
(Space for ATEX name-plate)
The Ex type of protection is only valid in conjunction with the
declaration of conformity.

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Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
5 Intended application
DANGER!
PROHIBITED:
•Use for other purposes without prior consultation with
the manufacturer.
•Use in potentially explosive atmospheres, unless
explicitly mentioned in the contract documentation.
•Use with smouldering, burning or adhesive particles.
•Use with highly explosive dusts (e.g. aluminium dust,
explosives, etc.).
CAUTION!
This FG automatic filter is only allowed to be used in
accordance with the operating conditions specified in the
contract documentation and in the Instruction Manual. All
forms of use which deviate from or exceed the limits of
use described above are considered to be contrary to the
intended purpose. The manufacturer shall not be liable
for any damage resulting from such use.
CAUTION!
Conditionally allowed:
•Use of solvents in consultation with the manufacturer.
•Continuous operation of the cleaning line (leads to
increased wear with abrasive media).
•Cleaning cycles shorter than 5 minutes (leads to
increased wear).
•Pressure surges greater than 4 bar.
•Particle concentrations greater than 1000 mg/l
(contact the manufacturer if necessary).
•Particle sizes greater than 2 mm (use a pre-screen).
FG automatic filters are designed for filtering solids out of
low-viscosity liquids.
Main applications:
•Cooling lubricant filtration (section 13)
•Product filtration
•Preseparation in a filter cascade
•Protective filtration before or after certain process steps
•Process filtration
•Destruction of unwanted agglomerates
6 Functional description
6.1 Process principle of the AF 113 G3
The tangential inflow between a preseparator tube and the
filter housing causes coarse and heavy particles in the
suspension to be sedimented into the collection cone. This
relieves the load in the segmented element.
When the liquid flows inward through the segmented
element, the particles contained in the suspension settle on
the filter medium, where they create a differential pressure.
A back pressure – the internal pressure – is built up by
means of a control throttle at the filtered fluid outlet.
The segmented element is cleaned when the preset
differential pressure is reached or after a defined time
interval has elapsed.
The segmented element is turned past the backflush
channel by the gear motor. The backflush valve is opened.
The particles are removed from the filter medium one
segment at a time by the internal pressure cleaning action
and guided out of the filter through the backflush channel.
Fig. 1: Separating and cleaning principle on the
segmented element
To start a cleaning process
A cleaning process can be started in the following ways:
•Manually
•By means of a differential pressure switch
•By means of a time switch
•By means of a higher-level controller
Filter medium
Core
element

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Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
6.2 Main components of the AF 113 G3
1
2
3
69
13
11
4
10
5
7
8
12
410
5
Fig. 2: Diagram of the main components
1
Electric cleaning drive
2
Inlet connection
3
Differential gauge/switch (optional)
4
Segmented element
5
Preseparator tube
6
Collection cone
7
Electro-pneumatic or manual drain valve (optional)
8
Drain opening
9
Electro-pneumatic backflush valve (optional)
10
Backflush channel
11
Filter housing
12
Control throttle cleaning flow rate
with gauge (optional)
13
Outlet connection
6.3 Functional principle of the AF 113 G3
1
2
3
4
5
7
6
Fig. 3: Functional principle of an automatic filter
1
The suspension flows tangentially downwards into the
annulus between the filter housing and the preseparator
tube.
2
The suspension is deflected 180°. This deflection and the
cyclone effect cause coarse solids to be sedimented into the
collection cone prior to the actual filtration process.
3
The suspension flows through the segmented element.
The particles contained in the suspension settle on the
outside of the element.
4
The filtered fluid enters the clean side and exits the filter.
A back pressure – the internal pressure – is built up by
means of the “throttling point” mounted at the outlet.
5
A cleaning process is started when the maximum differential
pressure is reached (if an optional differential gauge/switch
is installed) or after a preset time.
6
The gear motor begins to turn the segmented element. The
backflush valve is opened. The particles are removed from
the filter medium one segment at a time by the internal
pressure cleaning action and guided out of the filter through
the backflush channel.
The cleaning effect can be adjusted by means of the control
throttle (optional). The filtered fluid pressure and/or
volumetric flow are reduced for the duration of the cleaning
process. The filtration process is not interrupted.
7
The enriched particles in the collection cone can be
discharged periodically either manually or automatically.

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Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
7 Technical data
7.1 General data of the AF 113 G3
(without options)
The information indicated on the name-plate
is binding.
Electrical energy consumption*:................... 230 V/400 V
Peak noise emission:......................................< 70 dB(A)
Dimensions: .............................................See data sheet
Min. dismantling clearance above filter: ..............515 mm
Total dry weight:...................................................... 85 kg
Max. operating temperature: .................................180°C
Max. permissible operating pressure up to 100°C: 25 bar
Max. permissible differential pressure:...................10 bar
*See also name-plate on gear motor
7.2 Order-specific data
The name-plate is rendered invalid if the
segmented element or the filter insert are
modified.
•Please request a new name-plate from
the manufacturer.
This data is order-specific and can be taken from the name-
plate.
7.2.1 Name-plate for filter with Ex protection
7.2.2 Name-plate for filter without Ex protection
8 Transport and storage
Transport
•Always transport horizontally in the original packaging
•Avoid vibrations
Storage
•Always store horizontally in the original packaging
•Always store in a dry, frost-free room
Seaworthy packaging is specified in the
contract documentation as an option.
9 Assembly instructions
DANGER!
Explosion hazard!
Risk of injury to persons or damage to
property.
•This FG automatic filter is only allowed to
be installed and operated in the category
specified in the contract documentation
(offer/order confirmation).
•If no category is specified: Do not operate
the FG automatic filter in a hazardous area!
•The owner is responsible for zoning.
•The owner of the plant is solely responsible
for implementing the appropriate explosion
protection measures!
•If in doubt, please consult the responsible
authorities.
DANGER!
Explosion hazard!
Risk of injury to persons or damage to
property.
•The system is only allowed to be installed,
accepted and tested by a suitably qualified
person (99/98/EC).
WARNING!
If the system is installed by unauthorised persons
Risk of injury
All warranty claims are rendered invalid
•The system must be installed by a suitably trained
person!

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Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
9.1 Installation
DANGER!
Explosion hazard!
Risk of injury to persons or damage to
property.
•Check the conductivity between all
components!
•Note the maximum permissible resistance
R < 10 Ω.
•Make sure that earthing is provided by the
customer.
It must be possible to remove the filter insert
in order to carry out maintenance work.
•Prepare a suitable seat on which to mount the filter (e.g.
supports, see data sheet).
•Be sure to allow the required clearance for dismantling
and discharging (see data sheet).
•Lift up the automatic filter by the eyebolts using suitable
hoisting gear and remove it from the packaging.
DANGER!
If the filter topples over
Risk of injury to persons or damage to
property.
•Secure the filter seat firmly in position.
•Screw the automatic filter to the prepared seat.
•Remove the caps from the connections.
•Connect the pipes.
Pressure relief
•Design measures must be incorporated to prevent
inadmissible excess pressure on the dirty side.
•Install a pressure relief device if necessary.
9.2 Installing the pipes and selecting the pump
•The filter must always be installed on the pump discharge
side.
•Check the pump characteristic.
•Make sure that the pump suction opening is positioned
well below the liquid level.
•Adjust the filtered fluid pressure with the control throttle if
necessary.
•If required, install the control throttle in the cleaning line
in order to reduce the cleaning flow rate to a minimum.
•Ensure a minimum inlet pressure of 1.0 - 2.0 bar.
•Ensure a minimum filtered fluid pressure of
1.0 - 2.0 bar.
9.3 Mechanical installation
CAUTION!
High pressure at the drain valve!
Risk of injury to persons or damage to property
•Depressurise prior to mounting and dismantling.
CAUTION!
High pressure at the backflush valve!
Risk of injury to persons or damage to property
•Depressurise prior to mounting and dismantling.
Special mounting instructions for the cleaning and
drain lines
•Make sure that the drain line is securely fastened.
•Provide splash protection if necessary.
•Lay the pipes without a siphon if possible, to prevent any
risk of clogging due to sedimented concentrate.
1 2
bar
kPa
psi
Fig. 4: Mechanical installation
(cast stainless steel version)
Dismantling
clearance
(≥515 mm)
Allow sufficient
clearance for discharging
Drain
Inlet
Outlet
220 mm

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Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
Fig. 5: Mechanical installation
(nodular cast iron version)
9.4 Electro-pneumatic connections
DANGER!
Danger of electric shock!
Risk of serious or fatal injury in case of
contact with electrical components.
•All electrical installation work must be
carried out by a suitably qualified
electrician.
9.4.1 Connection to customer's controller
Gear motor
•Refer to the name-plate and/or the contract
documentation for details of the ratings (see also terminal
box connection diagram).
•Install a suitable motor circuit-breaker.
•Connect the gear motor.
Fig. 6: Standard gear motor connections
Differential gauge/switch (optional)
•Refer to the enclosed manufacturer’s documentation for
details of the connections.
Automatic valves (optional)
•Connect the precontrol valve (5/2-way magnetic valve) to
the compressed air supply (approx. 6 bar).
•Connect the solenoid to the power supply.
Refer to the contract documentation for
special types.
1 2
bar
kPa
psi
R
P
S
R
P
S
A
B
A
B
Fig. 7: Electro-pneumatic connections
Required on the switch box:
•Manual release for cleaning
•Manual release for drain valve
9.4.2 Connection to FG controller (optional)
•Connect the incoming feeder, gear motor, differential
gauge/switch (optional) and precontrol valve (optional) in
accordance with the enclosed circuit diagram.
Electric line =
Pneumatic line =
Compressed air
400 V 3~ 230 V 3~
Dismantling
clearance
(≥515 mm)
Allow sufficient
clearance for discharging
Drain
Inlet
Outlet
150 mm
150 mm
5/2-way
magnetic valve
2 x M8
1 x M12
1 x M12
1 x M8
2 x M8

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Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
9.5 Control variants of the AF 113 G3
The cleaning process is controlled differently according to
the application. The control variants and times described
here are examples and are simply intended to serve as a
guide.
9.5.1 Control variant 1
B1
B2TH
B4TH
B4TL
B3
Fig. 8: Control variant 1
Parameter
Description
Recommended
value
B1
Suppress differential
pressure peaks
1 s
B2TH
Motor running time
7 s
B3
Backflush valve ON
delay
0.5 s
B4TH
Drain valve pulse time
2 s
B4TL
Drain valve interval time
1 h
9.5.2 Control variant 2
B1
B2TH
B8
B7
B3
Fig. 9: Control variant 2
Parameter
Description
Recommended
value
B1
Suppress differential
pressure peaks
1 s
B2TH
Motor running time
7 s
B3
Backflush valve ON
delay
0.5 s
B7
Drain valve starting
delay
5 s
B8
Drain valve pulse time
2 s
If the delta p signal is still present after cleaning, the
cleaning process is repeated.
The filter can only be cleaned when the pump is
running.
10 Start-up
DANGER!
This FG automatic filter is not allowed to be put into
operation until it has been established that the
machine/system in which it is to be installed complies
with the requirements of the applicable EC directives,
harmonised standards, European standards or equivalent
national standards.
DANGER!
Explosion hazard!
Risk of injury to persons or damage to
property.
•The FG automatic filter must be
completely vented prior to start-up for
use with all media which are capable of
forming explosive gases.
•The FG automatic filter must be
completely filled with liquid.
•Take steps to prevent air pockets.
DANGER!
Danger due to high pressure in the filter!
Risk of injury to persons or damage to property
•Do not allow concentrate to spatter into the
atmosphere.
Make sure that:
•All caps are removed from the connections.
•All foreign bodies are removed from the filter.
•All pipe connections are tightened securely.
•All screws are tightened.
•All pipes and the filter are rinsed.
10.1 Functional test
To check the direction of rotation of the gear motor
•Remove the screws on the cover of the gear motor.
•Remove the cover of the gear motor.
•Start up the gear motor briefly (< 1 s).
•Compare the actual direction of rotation of the shaft with
that indicated by the arrow (clockwise rotation).
•Reverse the terminal connections of the gear motor if
necessary.
•Fit the gear motor cover again and screw it tight.
Fig. 10: Direction of rotation of the gear motor
Gear motor cover
Delta p
Motor
Backflush valve
Drain valve
Delta p
Motor
Backflush valve
Drain valve
Interlocked
Interlocked

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Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
Differential gauge/switch (optional)
•Refer to the enclosed manufacturer’s documentation.
To check the function of the drain valve (optional)
•Supply compressed air to the precontrol valve.
•Operate the manual release for the precontrol valve.
The drain valve is opened.
•Set the manual release for the precontrol valve to the
OFF position.
The drain valve is closed.
•Refer to the enclosed manufacturer’s documentation.
To check the function of the backflush valve (optional)
•Supply compressed air to the precontrol valve.
•Operate the manual release for the precontrol valve.
The backflush valve is opened.
•Set the manual release for the precontrol valve to the
OFF position.
The backflush valve is closed.
•Refer to the enclosed manufacturer’s documentation.
10.2 Operating settings
•Switch on the controller.
•Slowly open the inlet.
•Adjust the back pressure to 1 – 1.5 bar (max. 2.5 bar)
with the control throttle.
•Make a note of the initial differential pressure (optional).
Settings for time-controlled cleaning
•Set the times according to the operating conditions and
correct them if necessary.
Settings for differential pressure-controlled cleaning
with a differential gauge/switch
•Refer to the manufacturer’s documentation.
•Adjust the set differential pressure to the setpoint (see
contract documentation).
Initial differential pressure
The initial differential pressure varies according to the
application.
General guide:
Installation on discharge side: delta p ≤ 0.1 bar
1 2
bar
kPa
psi
Fig. 11: Initial differential pressure
After cleaning, the differential pressure must
return almost to the original initial differential
pressure.
If it does not, the cleaning function is faulty
(section 14).
Filter on
discharge
side

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Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
11 Normal operation
DANGER!
Danger due to high pressure in the filter!
Risk of injury to persons or damage to property
•Do not allow concentrate to spatter into the
atmosphere.
Always dispose of concentrate in a manner
which does not pollute the environment!
Consult the responsible authorities before
deciding upon the most suitable disposal
method.
The following must be monitored daily during normal
operation:
•Differential pressure
•Controller functions
11.1 Rinsing the drain line
CAUTION!
A high proportion of fine dirt particles in a long pipe
can lead to clogging!
Risk of injury to persons or damage to property
•Rinse the drain line daily/weekly, depending on the
application.
•Open the drain valve manually for approx. 10 - 15 s.
The drain line is rinsed.
11.2 Rinsing the cleaning line
CAUTION!
A high proportion of fine dirt particles in a long pipe
can lead to clogging!
Risk of injury to persons or damage to property
•Rinse the cleaning line daily/weekly, depending on the
application.
•Slowly adjust the control throttle until it is completely
closed.
•Open the backflush valve manually for approx.
10 - 15 s.
The pipe is rinsed.
•Adjust the control throttle to the OFF position again.
12 Shutting down the automatic filter
12.1 Temporary shut-down
On the installed automatic filter controller:
•Switch OFF the main switch.
12.2 Prolonged shut-down (> 48 h)
•Start a cleaning process manually.
•Remove the filter insert (section 15.2).
•Clean the filter insert (section 15.3.1).
•Reinstall the filter insert.
•Fill the filter completely with liquid.
•Switch OFF the main switch.
12.3 Emergency shut-down
•Switch OFF the main switch.
The power supply is interrupted.
13 Notes on cooling lubricant filtration
•Precipitation of constituents and microbiological loading
of the cooling lubricant must be avoided.
•Do not attempt to filter magnetic chips. Exercise caution
when grinding grey cast iron or steel.
•Install a suitable preseparator (800 - 1000 µm).
•Treat the cooling lubricant carefully. Take steps to
prevent excessive bacterial or fungal attack.
•Cooling lubricant that has been used for the cleaning
process must be treated separately. There is a risk of
enrichment with fine dirt if it is returned to the cooling
lubricant cycle.
•Provide constant-pressure valves in the backflush and
drain lines if the pressure on the filtered fluid side varies
between 4 and 25 bar. The rinsing effect is impaired if the
pressure difference is too high during the cleaning
process.
14 Troubleshooting
Fault
Possible cause
Remedy
Gear motor
does not turn
Motor circuit-
breaker tripped
RESET the motor
circuit-breaker
Check the gear
motor
Filtered fluid
solidified
Clean the filter
Valve does not
open
Not enough
compressed air
Increase the
pressure
Precontrol valve
defective
Check the
precontrol valve
Precontrol valve
connected
incorrectly
Check the
electrical and
pneumatic
connections
Initial
differential
pressure
no longer
reached
Solids
concentration too
high
Use a suitable
prefilter
Cleaning time too
short
Increase the
cleaning time (at
least 1 - 2
revolutions of the
gear motor)
Backflush
pressure too
low/high
Increase/reduce
the backflush
pressure with the
control throttle
(max. 2.5 bar)
Backflush valve
dirty/defective
Clean/replace the
backflush valve
Increased
concentration of
dirt on clean
side
Segmented
element defective
Check the
segmented
element and if
necessary renew it
Seals brittle
Check the seals
and if necessary
renew them
Excessive
leakage on
shaft seal
Shaft seal
defective
Renew the shaft
seal
Shaft seal
incorrectly
mounted
Check the seat of
the shaft seal
If in doubt, please consult the manufacturer.

Page 13
Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
15 Maintenance
DANGER!
Explosion hazard!
Risk of injury to persons or damage to
property.
•Work is only allowed to be carried out in
hazardous areas if appropriate safety
precautions are implemented.
•Safety precautions must be implemented
by the owner.
WARNING!
If the system is maintained by unauthorised persons
Risk of injury
All warranty claims are rendered invalid
•The system must be maintained by a suitably trained
person!
Before all maintenance work:
•Shut down the automatic filter (section 12).
•Take steps to prevent the machine/system from being
switched on again by unauthorised persons.
•Wear protective clothing and equipment appropriate to
the hazard potential of the medium (e.g. goggles,
respirator, protective clothing, etc.).
•Carry out the maintenance work.
•Start up the automatic filter again (section 10).
15.1 Inspection and maintenance schedule
•Refer also to the contract documentation.
Interval
Component
Activity
Weekly
Automatic filter
Check for leakage
Check the differential
pressure
Pipes
Clean
Monthly
Segmented element
Check for wear and if
necessary clean
Backflush channel
moulding z
Check for wear and if
necessary clean
Automatic filter
Check the
conductivity between
all components.
Note the maximum
permissible
resistance: R < 10 Ω
Yearly or
when
cooling
lubricant
replaced
Bearings
Check the clearance
Valves
Check correct
functioning
Segmented element
Clean
Automatic filter
Clean
Seal kit
Check for leakage
The necessary maintenance work is
dependent on the particular application.
Please consult the manufacturer if necessary.

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Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
15.2 Removing the filter insert
DANGER!
The automatic filter is pressurised!
Risk of injury to persons or damage to property
•Make sure that the pipe is depressurised prior to
opening the automatic filter.
The numbers indicated in parentheses
correspond to those used in the spare parts
drawing.
1
•Make sure that the pipe is depressurised prior to opening
the automatic filter.
•Close the filter inlet and outlet.
2
•Open the drain valve.
•Open the vent screw.
The automatic filter is discharged.
3
•Turn off the compressed air supply.
4
•Switch OFF the main switch.
•Disconnect the gear motor.
1 2
bar
kPa
psi
R
P
S
R
P
S
A
B
A
B
Fig. 12: Disconnecting the automatic filter
5
•Loosen and remove the hexagon screws (3.3) and the
spring washers (3.4) on the bell housing of the gear
motor.
•Withdraw the gear motor (1) vertically from the shaft.
Fig. 13: Removing the gear motor
6
•Loosen and remove the hexagon screws (5) and the
washer (6) on the filter cover.
Fig. 14: Loosening and removing the hexagon screws
on the filter cover
7
•Apply a large screwdriver to the notch.
•Lever off the filter cover.
3
1 1
2
4
2

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Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
8
•Lift up the filter insert by the eyebolts and withdraw it
vertically.
1 2
bar
kPa
psi
Fig. 15: Withdrawing the filter insert
•Lay the filter insert down carefully on a level surface,
taking care not to damage the segmented element.
The filter insert can now be maintained.
•Install in reverse order.
•Lower the filter insert into position, making sure it is
absolutely straight.
15.3 Cleaning the filter
•Remove the filter insert (section 15.2).
15.3.1 Cleaning the filter insert
WARNING!
Danger of aerosol formation!
•All work must be carried out in a room with a suitable
extraction system!
•Wear protective clothing and equipment appropriate to
the hazard potential of the medium (e.g. goggles,
respirator, protective clothing, etc.).
•Remove any coarse impurities by mechanical means.
•Wash the filter insert in a suitable cleaning solution.
•Carefully blow out the filter insert with a steam jet or
compressed air.
•Clean (or if necessary renew) and oil the seals.
15.3.2 Cleaning the filter housing
•Wear protective clothing and equipment appropriate to
the hazard potential of the medium (e.g. goggles,
respirator, protective clothing, etc.).
•Remove any coarse impurities by mechanical means.
•Wash the filter housing in a suitable cleaning solution.

Page 16
Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
15.4 Replacing the segmented element
DANGER!
The automatic filter is pressurised!
Risk of injury to persons or damage to property!
•Make sure that the pipe is depressurised prior to
opening the automatic filter.
WARNING!
If the system is maintained by unauthorised persons
Risk of injury
All warranty claims are rendered invalid
•The system must be maintained by a suitably trained
person!
The numbers indicated in parentheses
correspond to those used in the spare parts
drawing.
The segmented element can be dismantled
and mounted again more easily if it is stood
upright on the cover (element on top).
•Remove the filter insert (section 15.2).
•Clean the filter (section 15.3).
1
•Loosen the countersunk screws (18).
•Remove the preseparator tube (19).
Fig. 16: Removing the preseparator tube

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Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
2
•Loosen the cylinder head screws (45.5) and remove
them together with the spring washers (45.4).
•Remove the backflush channel (45) and the channel seal
(85.1).
Fig. 17: Removing the backflush channel
3
•Loosen the cylinder head screws (10) and remove them
together with the spring washers (9).
Fig. 18: Removing the cylinder head screws and the
spring washers

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Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
4
•Remove the centre flange (20).
Fig. 19: Removing the centre flange
5
•Remove the segmented element.
Fig. 20: Removing the segmented element
•Install in reverse order.

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Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
15.5 Replacing the element seals and guides
DANGER!
The automatic filter is pressurised!
Risk of injury to persons or damage to property!
•Make sure that the pipe is depressurised prior to
opening the automatic filter.
WARNING!
If the system is maintained by unauthorised persons
Risk of injury
All warranty claims are rendered invalid
•The system must be maintained by a suitably trained
person!
The numbers indicated in parentheses
correspond to those used in the spare parts
drawing.
•Remove the filter insert (section 15.2).
•Clean the filter (section 15.3).
•Remove the segmented element from the filter insert
(section 15.4, steps 1 - 4).
The seals can now be replaced.
Fig. 21: Replacing the element seals and guides
15.6 Replacing the backflush channel moulding z
DANGER!
The automatic filter is pressurised!
Risk of injury to persons or damage to property!
•Make sure that the pipe is depressurised prior to
opening the automatic filter.
WARNING!
If the system is maintained by unauthorised persons
Risk of injury
All warranty claims are rendered invalid
•The system must be maintained by a suitably trained
person!
The numbers indicated in parentheses
correspond to those used in the spare parts
drawing.
•Remove the filter insert (section 15.2).
•Clean the filter (section 15.3).
•Remove the segmented element from the filter insert
(section 15.4, steps 1 - 3).
1
CAUTION!
Pressure springs loaded!
Risk of injury to persons
•Carefully dismantle the backflush channel
moulding z.
•Withdraw the backflush channel moulding z (45.3) from
the backflush channel housing (45.1).
•Clean the backflush channel housing.
•Insert the new backflush channel moulding (45.3) into the
backflush channel housing (45.1) while pressing in the
pressure springs (45.2) one at a time.
Fig. 22: Dismantling the backflush channel
•Install in reverse order.
After installing:
•Check all screws and tighten them if necessary.

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Translation of the original instructions with assembly instructions AF 113 G3, Filtration Group GmbH, 23.01.18, Mat. No. 70310590, Version 07
15.7 Replacing the shaft seals and guide
DANGER!
The automatic filter is pressurised!
Risk of injury to persons or damage to property!
•Make sure that the pipe is depressurised prior to
opening the automatic filter.
WARNING!
If the system is maintained by unauthorised persons
Risk of injury
All warranty claims are rendered invalid
•The system must be maintained by a suitably trained
person!
The numbers indicated in parentheses
correspond to those used in the spare parts
drawing.
•Dismantle the gear motor
(section 15.2, steps 1 - 5).
1
•Remove the feather key (16.1).
2
•Loosen and remove the hexagon screws (25).
Fig. 23: Loosening and removing the hexagon screws
3
•Carefully withdraw the sealing disc (26) and the shaft
seal attachment (27) from the shaft.
Fig. 24: Withdrawing the sealing disc and the shaft
seal attachment
4
•Remove the lip seal (70.1), back-up ring (70.2) and O-
ring (70.3) from the shaft seal attachment.
Fig. 25: Removing the seals
5
•Remove the O-ring (70.4) from the shaft bearing insert
(24).
Fig. 26: Removing the O-ring
6
•Loosen and remove the cylinder head screws (23).
Fig. 27: Loosening and removing the cylinder head
screws
Sealing disc
Shaft seal
Lip seal
O-ring
Back-up