UDI filters UdiMatic 785290 User manual

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Manual
UdiMatic
Automatic Screen Filter
Udimatic
Installation- Operation- and
Maintenance Manual

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Manual
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INDEX
1 - Technical specification.........................................................................3
2 - Operating principle...............................................................................5
3 - Installation procedures.........................................................................6
3.1 - Assembly prior to installation...............................................................................................................6
3.2 - Filter installation...................................................................................................................................6
3.3 - Drain line installation............................................................................................................................6
4 - First commissioning and routine start-up..........................................7
4.1 - Filter initial pre-sets..............................................................................................................................7
4.2 - First commissioning.............................................................................................................................7
4.3 - Start-up................................................................................................................................................7
5 - Filtron flushing controller ....................................................................8
6 - Hydraulic scheme...............................................................................13
7 - Shut down & draining procedures.....................................................14
7.1 - Shut down procedure........................................................................................................................14
7.2 - Drainage procedure...........................................................................................................................14
8 - Preventive maintenance & inspections.............................................15
8.1 - Daily ..................................................................................................................................................15
8.2 - Monthly .............................................................................................................................................15
8.3 - Quarterly ............................................................................................................................................15
8.4 - Yearly ................................................................................................................................................15
8.5 - Two years...........................................................................................................................................16
8.6 - Three years........................................................................................................................................17
8.7 - Instructions for cleaning the screen...................................................................................................17
9 - Trouble shooting.................................................................................18
10 - Spare parts........................................................................................19
10.1 - Illustrated Parts Breakdown.............................................................................................................19
10.2 - Part list.............................................................................................................................................20
11 - Head loss / flow.................................................................................22
11.1 - Head loss table *..............................................................................................................................22
11.2 - Head loss graph *.............................................................................................................................22
11.3 - Application guideline........................................................................................................................23

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1 - TECHNICAL SPECIFICATION
Screen Area & Maximum Flow Rates
The maximum flow rate refers to screens over 200 microns/ less than 80 mesh.
For a finer filtration degrees consult our representative.
Screen Grades
* Other screen grades are available.
Electrical Data
Standard 230 V / 110 V – 50 Hz. For use of 110 V internal modifications have to be made.
DC models available on request.
Materials:
●Filter body: Polyester-coated steel (option: stainless steel)
●Rubbers: Natural rubber NR
●Filter element: Super Screen; multiple layers of stainless steel, sintered filter pack (1" and as option:
PVC screen)
Construction
The standard housing of the filter is made of carbon steel with a 120 micron protective coating of extra
durable polyester, applied electro-statically and oven cured on a zinc-phosphate layer, for maximum
anti-corrosion protection both internally and externally.
Access to the internal parts of the filter is through the removable bolted cover.
All immersed parts are made of either plastic materials or non-corrosive metals to ensure many years of
trouble free operation.
For special applications; contact our representative for more information.
Micron 75 100 130 200 300 400
Mesh 200 150 120 80 50 40
Model Inlet/Outlet diameter Max. Flow Rate Flush Flow Rate Screen Area
inch mm m/h m/h cm
785290 1" (thr.) 25 7 2 - 3 270
7851B91 1½" 40 15 5 850
7851B92 2" 50 25 5 850
7851B93 3" 80 40 5 1450
7851E94 4" 100 80 10 2360
7851964 4" 100 80 10 4500
785196 6" 150 150 10 4500
785198 8" 200 300 14 6200

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* capacity based on 300 micron screen and good water quality.
Type B A D E H T
inch mm inch mm mm mm
785290 1" 150 6" 410 500 155
7851B91 1½" 230 10" 540 600 220
7851B92 2" 230 10" 540 600 220
7851B93 3" 280 10" 540 770 220
7851E94 4" 280 10" 540 905 220
7851964 4" 540 12" 600 1310 320
785196 6" 540 12" 600 1310 320
785198 8" 700 12" 600 1530 320
Type Unit
785290
7851B91
7851B92
7851B93
7851E94 7851964 785196 785198
Connection B inch 1" 1½" 2" 3" 4" 4" 6" 8"
Capacity * m/h 7 15 25 40 80 80 150 300
Flange (ISO 7005 PN10)
Pitch C mm thread 110 125 160 180 180 240 295
Holes mm 4 x Ø18 4 x Ø18 8 x Ø18 8 x Ø18 8 x Ø18 8 x Ø22 8 x Ø22
Weight kg 11 26 28 41 48 62 65 78
Diameter D inch 6 10 10 10 10 12 12 12
Total height H mm 500 600 600 770 905 1310 1310 1530
Total width E mm 410 540 540 540 540 600 600 600
Centre distance A mm 150 230 230 280 280 540 540 700
Centre distance T mm 155 220 220 220 220 320 320 320
Filter surface cm 270 850 850 1450 2360 4500 4500 6200
Drain valve inch 1 x 1" 1 x 1½" 1 x 1½" 1 x 1½" 1 x 1½" 1 x 2" 1 x 2" 1 x 2"
Flushing cap. min. m/h 2 - 3 5 5 5 10 10 10 14
Flushing press. min. bar 1 - 2 1 - 2 1 - 2 1 - 2 1 - 2 1 - 2 1 - 2 1 - 2
Flushing water appr. ltr 6 10 10 15 30 40 40 55

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2 - OPERATING PRINCIPLE
A. Normal flow pattern
Raw water enters the filter through the inlet port, passing through the fine screen (1) and out to the outlet
port. The sediments stopped on the screen (1) create a "cake" of sediment. This "cake" improves
filtration efficiency as it performs a finer filtration. The sediments accumulated on the screen, create a
differential pressure across the screen. The differential pressure rises until the predetermined value is
reached [normally 0.5 bar].
A differential pressure switch will activate the self cleaning process. A timer backup guarantees that the
time passed from the last self cleaning process will not be longer than the preset value determined by the
user.
B. Self cleaning
On a flushing command, the flushing valve (6) opens to the atmosphere and creates pressure drop in the
motor chamber (5), causing the dirt on the screen to be sucked in by the nozzles (2). This pressure drop
also moves the piston (7) and the collector in a linear movement. In addition, the hydraulic motor (4)
rotates the collector.
These two processes performed simultaneously create a spiral movement of the nozzles so they cover
the whole screen surface, enabling complete and effective cleaning of the screen.
The entire process takes seconds (according to specific model), upon completion of the cleaning process
the filter returns to its initial position.
This self cleaning flushing cycle can be initiated by DP switch, timer backup or manually.
out
in
flushing controller
to drain
1
3
5
4
7
2
6

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3 - INSTALLATION PROCEDURES
3.1 - Assembly prior to installation
The filter is normally supplied fully assembled.
Electrical connections will be done by authorized personnel only.
Install the filter only in vertical position.
3.2 - Filter installation
1. For best results, the filter should be installed as near as possible to the system it is required to protect.
However, if low filter inlet pressure is a concern, either before or during flushing, the filter may need to
be installed closer to the pressure source.
2. Ensure that the upstream pipe size from the pressure source to the filter is equal to or greater than the
filter’s inlet size.
3. A pressure relief valve must be installed before the filtering installation if the pressure is not controlled
effectively.
4. It is strongly recommended to install an isolation valve at the filter’s inlet, and a check valve, or an
isolation valve at the filter’s outlet.
5. An inlet isolation valve must be installed in situations where the pressure source cannot be shut down
for maintenance.
6. Ensure that the filter is mounted in the proper flow direction, as indicated by the arrows on the filter
housing.
7. Ensure that sufficient space is provided around the filter for maintenance.
3.3 - Drain line installation
A drain line should be attached to each flushing valve, as follows:
●The back pressure at the flush valve outlet should not exceed 3 meters (0.3 bar, 4.5 psi)
●Piping should be installed level or pitch down to avoid back-pressure.
●The open end of piping should be securely mounted to avoid fluttering during flushing cycle.

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4 - FIRST COMMISSIONING AND ROUTINE START-UP
NOTE: The differential pressure switch and timers have been preset to the proper settings. Do not adjust
prior to start-up.
4.1 - Filter initial pre-sets
1. The differential pressure switch is set to 5m (0.5 bar, 7 psi) maximum, do not adjust.
2. The flushing duration is set to:
3. Flushing interval (time between one flush to the next one) should be set according to water
conditions, the default is set at 2 hours.
4.2 - First commissioning
Check prior to to start-up the following. Adjust when required.
1. Check that the line pressure will always be at least 2 bar (20mWC) at the filter inlet during the
flushing cycle.
2. Check that there are no upstream pipeline restrictions.
3. Check that the filter is mounted in the correct flow orientation as indicated by the arrows on the
body.
4. Check that the flushing valve is mounted properly.
5. Check that the tubing connections are completed.
6. Check that power is available to the Filtron flushing controller.
7. Check that the flushing valve drain lines are installed.
8. Check that the upstream and downstream isolation valves are closed.
9. Check that adequate space is available around the filter for maintenance.
4.3 - Start-up
1. Slowly open the inlet valve to the filter allowing the filter to pressurize.
2. Check for any external leakage and eliminate.
3. Disconnect the control tube from the hydraulic piston and bleed it until all of the air is displaced by
water. Reconnect the control tube.
4. Slowly open the outlet valve of the filter (if installed).
5. Initiate a manual flushing; observe the inlet and motor chamber pressures (use three way valve and
manometer mounted on the control box). The motor chamber pressure should be between 0.8-1.5
bar below inlet pressure during the flushing cycle. Minimum inlet pressure during flushing cycle
should be 2 bar (30 psi) for all models.
6. Observe the differential pressure's build up across the filter. It is recommended to observe at least
one full cycle to ensure that the system is operating properly.
NOTE: At any given time pressing the manual flushing push button will cause one flush cycle. The flushing
cycle duration can be adjusted via the controller, it is recommended not to shorten or prolong the flushing
time for it will not clean the whole screen area or use an excessive amount of water.
Type Time (s) Type Time (s)
785290 1" 8 7851E94 4" 14
7851B91 1½" 12 7851964 4" 16
7851B92 2" 12 785196 6" 16
7851B93 3" 12 785198 8" 16

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5 - FILTRON FLUSHING CONTROLLER
General instructions:
The flush controller is made and designed to flush semi-automatic filters. After installation of the Filtron, it
can flush the filter at a preset time, pressure difference or on manual activation. The flushing controller
can, as an option, be modified for use with a pressure-maintenance/main valve and an alarm output.
Installation instructions:
Mount the flush controller in an easily accessible place. If the flush controller is exposed to more than
occasional water splashes, it needs to be protected against this with a cover or casing.
Programming the controller:
The controller is equipped with an LCD display and 4
keys as displayed below. When the unit is left
untouched for a minute the display is switched off and
the only life signal is given by a beep sound that can
be heard every 20 seconds. Holding down any of the
keys for a few seconds will bring the screen back to
life.
The screen consists of several fields, some of them are
editable and some of them are not. For inserting EDIT
MODE the ENTER key has to be pushed. The EDIT
MODE is indicated by blinking of the characters at the
currently editable field. Each time the ENTER key is
pushed again, the next editable field becomes under
focus and starts blinking. While in EDIT MODE the "+"
and "-" keys can be used for changing the value under
focus. Pushing the ENTER key again will set the
selected value to the current field and move the focus
to the next editable field which will start blinking. Once
entering this process of passing through the editable
fields, the user has no way back but by pushing the
ENTER key repeatedly, he passes through the chain of
editable fields until arriving back to the FLUSH TIME field, meeting no more blinking fields.
Notice: that before the first use of the unit, it may be necessary to pass through the configuration process
prior to defining the flushing program in order to adjust the features of controller to the specific
application. The configuration process is described below.
The series of editable fields:
The desired
flush time per
station
The desired flushing mode.
Contains either the flushing
interval or the letters "dp"
when the flushing is
triggered by dp only.
Flush time (A) Flush mode (B)
DP accumulations
(C)
Time-
accumulations (D)
Manual-
accumulations (E)

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(A) The flush time:
Defines the duration of the flushing time per station. The following options are selectable:
5-20 sec in steps of 1 sec
20-55 sec in steps of 5 sec
1-6 min in steps of 0.5 min
The DP setting:
As standard, the Filtron is supplied with an external electronic pressure difference switch. The DP setting
is determined on the external DP sensor, which is set as standard to 0.5bar. The flush request signal is
indicated in the form of a closed dry contact on the relevant input terminals.
The pressure difference of the external DP sensor may be set using the
screw on the side. One whole turn of 360° adjusts the pressure difference
by 0.1bar.
Turn anticlockwise to reduce the switching pressure.
Turn clockwise to increase the switching pressure.
(B) The Flush Mode:
The Flush Mode determines how the flush cycle is activated. The
selectable options are:
●OFF - no flushing will take place
●By time – In this case the flushing cycles will be repeated in a selected interval or will be triggered by
the DP signal depending on what happens first. No matter how was the flushing cycle started the
interval to the next cycle will start to be measured again after each ending of a flushing sequence. The
selectable intervals are the following: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60 minutes 2, 3, 4, 5, 6,
8, 12, 18, 24, 72, 120 hours
●dp – flushing will be triggered by DP only.
Note: When the keys ‘+’ and ‘-’ are pressed at the same time, in the field ‘Flush Mode’ the remaining time
until the next cycle is shown in alternating hours and minutes.
(C D E) Accumulations:
The unit independently accumulates and displays the number of flush cycles that are initiated by DP, on
time or manually.
For each of the accumulation fields, the ‘+’ or ‘-’ keys can be used to clear the accumulated value.
The configuration process:
Start the configuration process by holding the ENTER key pressed in for at least 3 seconds. The unit
detects how many plug-in boards (each with two outputs) are in use in the specific case.
How the outputs are assigned depends on the definitions that are set during the configuration process
described below. The following rules apply:
1. Backflush valves will be allocated starting from output 1 and up.
2. The last backflush valve can be canceled and then its allocated output will be left unused.
3. Alarm output, Delay-Valve and Main-Valve when defined, will be allocated in this order, right after the
last backflush valve (whether in use or not).

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Example:
In the case of three plug-in boards, six outputs can be used. In the absence of an alarm output, a delay
valve and a main valve, all the six outputs are assigned to back-flow valves.
If a main valve is defined, the first five outputs are assigned to back-flow valves and output no. 6 is
assigned to the main valve. Output no. 5 (for the last back-flow valve) can be disabled and then remains
unused. If a delay valve is also defined, this is assigned to output 5, immediately prior to the main valve.
The first four outputs are then available for back-flow valves and of these output 4 (for the last back-flow
valve) can be disabled. This output then remains unused. If an alarm output is also defined, this is assigned
immediately prior to the delay valve. In this case only the first three outputs are available for back-flow
valves. Output 3 can be disabled (disabling is possible in View Outputs using the manual key).
During the configuration process, the following functions are defined:
Main valve (pressure maintenance valve): Yes/No. If the answer is ‘Yes’, the Pre-Dwell delay between the
main valve opening and the opening of station no. 1 can be defined. The selectable delay steps are: 5 - 10
- 15 - 20 - 25 - 30 - 35 - 40 - 45 - 50 - 55 seconds - 1 - 1.5 - 2 - 2.5 - 3 - 3.5 - 4 - 4.5 - 5 - 5.5 - 6 minutes
Dwell time: The delay between stations can be set to 5 - 10 - 15 - 20 - 25 - 30 - 35 - 40 - 45 - 50 - 55 or 60
seconds.
DP delay: The delay during which the DP sensor reading is expected to remain stable for a reaction can be
set to 5 - 10 - 15 - 20 - 25 - 30 - 35 - 40 - 45 - 50 - 55 - 60 seconds.
Looping limit: The number of successive flush cycles activated by the DP sensor that can be conducted
before it is established that an endless loop problem has arisen. The options are: 1-10 or ‘no’, which means
that the loop problem is ignored.
Alarm: Yes/No. An output is assigned for alarm activation.
Delay Valve: Yes/No – an output is assigned to activation of the delay valve.
View Outputs: This is a special mode with which the list of outputs can be gone through to see how each
output is assigned. Use the ‘+’ key to change ‘no’ to ‘yes’ and confirm with ENTER. Then use the ‘+’ key
to step through the list. The ordinal number of the output is displayed in the bottom left corner. The function
that is assigned to the output is displayed in capital letters in the middle of the screen. The possible
number of outputs that can be used is always an even number, because it is calculated based on the
number of plug-in boards used (each with two outputs). If the number of outputs needed is an odd number,
however, the last valve that is assigned to flushing can be disabled using the manual key for manual
operations.
Pressure units: The units that are used for pressure measurements. Choice of bar or psi. This is not
applicable for an external pressure difference switch.
Calibration: Zero calibration of the built-in electronic DP sensor. Select ‘Calibration = Yes’ with the sensor
ports disconnected (disconnect high and low pressure hoses for calibration).
This is not applicable for an external pressure difference switch.
Version display: The last screen of the configuration contains information about the controller’s software
version. The versions consist of four figures, such as:
00
13
Reset: When adding or removing a plug-in board, always switch off the power. This also resets the
controller.

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Solving endless loops:
As explained above, endless looping problem will be declared when the number of consecutive flushing
cycles triggered by the DP sensor exceeds the "Looping limit" defined during configuration. The fact that
endless looping problem was detected will be indicated on the display and will cause the activation of the
Alarm output, additionally, the DP indication will no longer be considered as a trigger for flushing. The
following flushing cycles will be triggered by the interval count down only.
Low pressure:
When a closed contact indication is received at the low pressure input of the controller, the symbol
will start to appear blinking at the display. All activities will stop including the countdown to the next flushing
cycle. If the low pressure happened while a flushing sequence was in progress, when the low pressure
condition terminates the flushing sequence will start from the beginning rather than continue from the stop
point.
Manual activation:
A flushing sequence can be manually activated by the "MANUAL" key. When manually activated the icon
will appear on the display. The same key will be used for manually terminating a sequence in progress.
Adding and removing of plug-in units:
The number of connections on the Filtron may be altered with plug-in units. Before the configuration is
altered, the power must be removed from the unit.
The addition and removal of the plug-in units happens by sliding the bottom dark grey cover downwards.
Ensure that the plug-in units are all in the left-hand connectors, so when adding units, work from left to
right.
Slide the plug-in unit carefully part way into the connector until the plastic bracket at the bottom fits into
the hole and then slide the unit fully home.
Removal happens in the reverse order.
Technical data:
AC model:
Power supply: 220 or 110VAC 50 or 60Hz with built-in transformer to 24VAC.
Outputs: 24VAC solenoids.
DP sensor:
Standard: external dry contact DP sensor.
Option: built-in electronic analogue DP sensor.
Pressure sensor: dry contact pressure sensor (option)
Ambient temperature: 0-60°C.

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Wiring diagram, AC model:
The illustration below shows the wiring for the AC model of the controller.
Note:
1. The external DP sensor is standard and is intended for use when the unit does not feature a built-in
electronic DP sensor (option).
2. The unit is supplied with 24VAC, internally transformed from 220/110VAC.
3. Switch off the power before removing/adding a plug-in unit.
4.
220V configuration
24V AC
110V configuration
24V AC solenoids
Power supply
Pressure sensor (option)
DP sensor

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6 - HYDRAULIC SCHEME

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7 - SHUT DOWN & DRAINING PROCEDURES
7.1 - Shut down procedure
NOTE: Before filter shut down or draining, perform two cycles of manual flush, verify that head loss on the
filter does not exceed 0.1-0.2 bar (1-2 meters).
1. Close the isolating valve on the outlet of the filter if equipped.
2. Initiate a manual flushing by pressing "M" on the flushing controller.
3. Close the isolating valve on the inlet of the filter
4. Initiate an additional manual flushing cycle to relieve the pressure in the filter.
7.2 - Drainage procedure
Prior to accessing filter internals, it is necessary to drain the filter. Note that uncontrolled emptying of the
filter may result in excessive water spillage in the area around the filter.

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8 - PREVENTIVE MAINTENANCE & INSPECTIONS
General notes:
1. In case that there is a need to drain the filter completely, perform manual flush before draining the
filter.
2. (__) refers to the breakdown drawings of chapter 9.
3. Before installing seals and O-rings back to their places, apply silicone grease ‘DOW CORNING 4DC’
or equivalent grease (unless otherwise noted).
4. Do not tighten / untighten bolts while the filter is pressurized.
Following is a schedule of preventive maintenance and inspections based on average filtration duty, and
should be used as a guideline only. For best results, a maintenance schedule should be compiled based
on experience gained from using the filter. Maintenance kit (paint and grease) is attached to the filter.
8.1 - Daily
Repair any damage to the protective coating of the filter without delay. Prior to application of protective
paint, thoroughly clean the damaged spot with wire brush.
8.2 - Monthly
On units equipped with by-pass valve, the by-pass should be engaged at least once a month. This will
clean the valve seat of any accumulated dirt, as well as ensuring proper by-pass
operation.
8.3 - Quarterly
Depressurize the filter; disconnect the command pipes from the piston.
Dismantle the piston from the filter by unscrewing the piston out. Pull out piston
rod (4) lubricate the piston rod with Dow Corning 4DC or equivalent grease. Push
the piston rod back inside and install the piston back. Bleed the air from the
command pipes until all the air is displaced by water, connect the command
pipes back. Perform start-upprocedure for filter (see par. 4.3).
8.4 - Yearly
Every year lubricate the piston internal parts with lubrication grease. Depressurize the filter and
disconnect the command pipes from the piston. Dismantle the piston from the filter by unscrewing the
piston out.
1. Screw out the bolts (1), and pull the front flange (2) out.
NOTE: do not unscrew the rear bolts (3)
1
2
3

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2. Pull the piston bar with the whole assembly (4) out of the cylinder.
3. Apply a thin layer of Dow Corning 4DC or equivalent grease to following parts: (5), (6), (7) and (8).
4. Fill the inner slot (9) with Dow Corning 4DC or equivalent grease up to the slot edges.
5. Slide the piston (4) assembly into the cylinder; verify that leading strip (12) is placed in its slot. Slide
the front flange (2) on the cylinder.
6. Align the screw holes on the cylinder (10) with the screw threads on the front flange (11).
7. Screw the bolts (1), and gently tighten them.
8. Install the piston on the filter, and connect the command pipes back to the "TEE" fitting.
9. Check for water leakage during next operation and flushing process.
8.5 - Two years
Use our maintenance set for bi-annual maintenance and replace all seals.
24
10
11
12
5
8
6
7
9
24
Model
1"
Model
1½" / 2" / 3” / 4”
Model
4L" / 6" / 8"
Partcode set
4S78529099
Partcode set
4S7851B9199
Partcode set
4S78519699
4S801505 Cover seal
1
4S78519103 Cover seal
1
4S71500833
Cover seal
1
4S801504 Screen seal
1
4S7851B9160
Screen seal
2
4S7851B9163
O-ring rotor lagerring
1
4S71500804
Screen seal
2
4S78529070 Sealset cylinder
1
4S7851B9170
Sealset cylinder
1
4S78519370
Sealset cylinder
1
4S741000032
Rotorbearing
1
4S741000032
Rotorbearing
1
4S71501003
Rotorbearing
1
4S78529185 Rotor ring
1
4S7851B9185
Rotor ring
1
4S78519685
Rotor ring
1

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Instruction for filters (1½" – 8") dismantling and installing:
●Disconnect command pipes from the piston (7).
●Unscrew cover bolts (9) and remove the cover (8).
●Take out the collector assembly (4) by holding the hydraulic motor (4/2) and a slightly pulling upwards.
●Pull out the screen (3 or 3A).
●For replacing upper bearing (11);
●Separate the collector assembly (4) from the bearing base (10).
●Unscrew the hydraulic motor locking bolt (4/3) and pull out the hydraulic motor (4/2) from the
collector assembly (4)
●Separate the bearing base (10) from the collector assembly.
●Remove bearing stopper (5) and pull out the upper bearing (11).
●Install the new upper bearing into its place in the bearing base (10) and secure it with the bearing
stopper (5). Before installing the bearing stopper lubricate it with silicone grease "OKS 1110/0" or
equivalent grease.
●Install the bearing base (10) on the collector assembly (4), install back the hydraulic motor (4/2)
and secure it with the locking bolt (4/3).
●For replacing lower bearing (3/3);
●Take out the screen assembly (3 or 3A).
●The lower bearing is installed inside the fine screen handle (3/4). Press on the lower bearing from
outside (3/3) to pull it out.
●Insert the new bearing (3/3) into the fine screen handle (3/4) from the inside and press it until it fits
in place.
●Verify that the screen seals (3/2) are intact (or replace if necessary), lubricate the seals with silicone
grease "OKS 1110/0" or equivalent grease.
●Insert the screen (3 or 3A) assembled with the collector assembly (4) into the filter body and press
slightly the bearing base (10) to fit in place.
●Verify that the cover seal (2) is intact (or replace if necessary), lubricate the seal with silicone grease
"OKS 1110/0" or equivalent grease and place it in its groove in the filter body.
●Place cover (8), screw in cover bolts (9) and tighten the bolts.
●Connect command pipes back to the piston (7).
●Perform start up procedure and manual flush to the filter.
8.6 - Three years
Replace damaged seals and gaskets of the piston as necessary or every 3 years
8.7 - Instructions for cleaning the screen
It is recommended to take out the filter screen for cleaning and checking every one year or when head-loss
does not decrease after three repetitive flushing cycles due to differential pressure switch.
Gently clean the screen using a bristle brush, never use a steel brush.
NOTE: If a bristle brush does not remove particles from screen, immerse screens in an acid or alkaline
solution for some time, then rinse it thoroughly. Recommended solution: 1% - 2% Hydrochloric Acid (HCl),
or 5% Sodium Hydroxide (NaOH).
Chemicals manufacturer’s safety instructions should be read before the using chemicals.
Model
1"
Model
1½" 2" 3” 4”
Model
4L" 6" 8"
Partcode set
4S78529070
Partcode set
4S7851B9170
Partcode set
4S78519370

18 UDI 12/2019
Subject to modifications No liability accepted for errors or misprints
Manual
UdiMatic
9 - TROUBLE SHOOTING
Symptom Cause Remedy
Filter flushes often Extra soiled water Take measures upstream
Pressure loss increases rapidly
Insufficient cleaning:
1. Inlet pressure is too low
2. Outlet pressure is too low
1. Pump at higher pressure
2. Install a pressure-sustaining
valve
Discharge-pipe only runs 2-3
sec. (instead of 8-10 sec.) Rotor does not go up/down Check cylinder
Filter doesn’t flush at pressed
button Electrically and/or valve Test: disconnect hose
Filter does not flush on ∆P en/or
time Print settings / ∆P-switch Check power / settings
Flushing ends slowly In-line filter clogged Clean

19 UDI 12/2019
Subject to modifications No liability accepted for errors or misprints
Manual
UdiMatic
10 - SPARE PARTS
The following page depicts a typical filter assembly and indicates proper part description and location.
Please refer to these descriptions (paragraph 9.2) when ordering spare parts.
10.1 - Illustrated Parts Breakdown

20 UDI 12/2019
Subject to modifications No liability accepted for errors or misprints
Manual
UdiMatic
10.2 - Part list
# Description 1½" and 2" 3 " 4"
2 Cover gasket 4S78519103 4S78519103 4S78519103
3 Fine screen Ass. – (P.V.C) 4S7851B9116... E8510454 E8510461
3-A Fine screen Sintered – Ass. 4S7851B9106... 4S7851B9306... 4S7851E9406...
3/1 Fine screen – PVC body E8510256 E8510456 E8510466
3/1-A Fine screen Sintered E8510255 E8510455 E8510465
3/2 Screen Seal 4S7851B9160 4S7851B9160 4S7851B9160
3/3 Lower Bearing 4S741000032 4S741000032 4S741000032
3/4 Fine screen handle 4S78519161 4S78519161 4S78519161
4Dirt collector – Assembly 4S7851B9108 4S7851B9308 4S7851B9408
4/1 Dirt collector body 4S7851B9187 4S7851B9387 E8515417
4/2 Hydraulic motor E8510258 E8510258 E8510458
4/3
Hydraulic motor locking bolt
E8510407-BR E8510407-BR E8510407-BR
4/4 Suction nozzle 4S78519186 4S78519186 4S78519186
5 Bearing Stopper – "O" Ring 4S7851B9163 4S7851B9163 4S7851B9163
6 Flushing valve 2U20916G 2U20916G 2U20916G
7 Hydraulic piston 4S7851B9107 4S78519370 4S78519370
8 Cover E8510260 4S7851B9303 4S7851B9303
9 Bolt 4S78519109 4S78519109 4S78519109
10 Bearing base 4S78519184 4S78519184 4S78519184
11 Upper Bearing 4S78519185 4S78519185 4S78519185
12 Pressure control box Y8510201-MG Y8510201-MG Y8510201-MG
13 Pressure gauge 4S78519191 N6111025 N6111025
14 3 way valve selector PM202500 PM202500 PM202500
15 Solenoid valve AC 2U205400 2U205400 2U205400
Solenoid DC latch 2U208402 2U208402 2U208402
16 Pressure switch - NC 1U05010207 1U05010207 1U05010207
17 Mini Control Filter 2S2000046 2S2000046 2S2000046
18 Pressure control box side
cover Y8510204-MG Y8510204-MG Y8510204-MG
19 AC Controller 4S785191142 4S785191142 4S785191142
DC Controller N5312222 N5312222 N5312222