Arkal B Series User manual

S-3
Screen Filters KB Series
Disc Screen Hydrocyclone Media
Features
<Installed in angle position
<Supplied in 2"- 8" inlet / outlet connections
<Low backwash water consumption
Technical Data
Model B-2 B-3 B-4 B-6 B-8 B-2 B-3 B-4 B-6 B-8
Metric US
Connection
diameter mm 50 90 110 160 225 inch 2 3 4 6 8
Screen area cm
2
1100 1100 1630 4120 5240 inch
2
170 170 253 639 812
Flush flow rate at
min. pressure m
3
/h 66620 20 gpm 26 26 26 88 88
Pressure range bar 2-10 psi 29-145
Max.
temp.
0
C65
0
F149
Control voltage 9 V DC or 220 V/ 24 V AC 9 V DC or 110 V/ 24 V AC
Maximum Filtration Flow ate / Water Quality
Model B-2 B-3 B-4 B-6 B-8 B-2 B-3 B-4 B-6 B-8
Filtration Grade Water
Quality m
3
/h gpm
400 µ Good 25 40 80 130 200 110 176 352 572 880
Average 25 40 80 130 200 110 176 352 572 880
Poor 25 40 80 130 200 110 176 352 572 880
200 µ Good 25 40 80 130 200 110 176 352 572 880
Average 20 35 70 90 170 88 154 308 396 748
Poor 15 25 40 70 130 66 110 176 308 572
150-100 µ Good 25 40 80 130 200 110 176 352 572 880
Average 15 25 40 70 150 66 110 176 308 660
Poor 10 20 35 60 120 44 88 154 264 528
80-50 µ Good 10 20 35 60 120 44 88 154 264 528
Average 8 18 25 50 90 35 79 110 220 396
Poor 6 15 20 40 60 26 66 88 176 264
Compact, self-flushing screen filter

www.arkal-filters.com
S-4
Head Loss Chart at, Clean State
B filtration units can be
supplied in:
Polyester coated steel or
Stainless steel
BB SSeerriieess
Compact, self-flushing screen filter
Dimensions and Weights
Model B-2 B-3 B-4 B-6 B-8 B-2 B-3 B-4 B-6 B-8
Dmm 50 80 100 165 225 inch 23468
Hmm 480 495 495 1025 1330 inch 25 25 35 43 47
Wmm 471.5 471.5 471.5 459 470 inch 19 19 19 18 18.5
Approximate
shipping weight kg 24 25 28 76 130 lbs 53 55 61 167 286

ARKAL SCREEN LINE
B - SERIES
Compact Self-Cleaning Screen Filter
SERVICE & MAINTENANCE MANUAL

SERIES-B
-1-
Table of Contents
Subject Page No.
Introduction ................................................................................................... 2
Safety Instructions .......................................................................................... 3
Description & Operation ................................................................................. 4
Technical Data ............................................................................................... 6
Pressure Loss At 120 Micron ......................................................................... 7
Initial Installation & Operation ......................................................................... 8
Maintenance & Periodical Checks .................................................................. 10
9V Battery Removal & Installation ........................................................ 10
Control Card Removal & Installation ..................................................... 11
Solenoid Removal & Installation ........................................................... 12
Differential Pressure Indicator Removal & Installation .......................... 14
Hydraulic Piston Removal & Installation ............................................... 16
Screen Removal & Installation ............................................................. 18
Periodical Checks ................................................................................ 20
Troubleshooting ............................................................................................. 22
IPB ................................................................................................................. 25
Appendixes .................................................................................................... 27
Appendix 1 - AC Controller ................................................................... 27
Appendix 2 - Control Loops Schematic Drawing DC ............................. 30
Appendix 3 - Control Loops Schematic Drawing AC.............................. 30
Appendix 4 – Warranty.......................................................................... 31
ALL RIGHTS RESERVED, THIS MANUAL AND THE INFORMATION CONTAINED ARE NOT
ALLOWED TO BE USED WITHOUT WRITTEN PERMISSION FROM ARKAL FILTRATION SYSTEMS

SERIES-B
-2-
Introduction
General
Arkal Filtration Systems congratulates you on purchasing the new B SERIES
self-cleaning filter. This filter now joins the wide family of filters produced and
supplied by Arkal for agriculture, municipal water and sewage systems, and all types
of industrial applications. All products manufactured by Arkal are easy to install, use
and service and don’t require special skills to operate them.
For operation and maintenance of the filter please follow the instructions in this manual.

SERIES-B
-3-
Safety Instructions
1. Prior to installation or handling of the filter, read carefully the installation and operation
instructions carefully.
2. Confirm filter draining prior to service.
3. Take precautions while lifting, transporting or installing the filter.
4. Installation of the filter should be performed so as to avoid direct water splashing on any
of the filter parts and especially on the electronic control unit.
5. Confirm that filter weight, when full, meets the support construction requirements.
6. Prior to installation confirm that line pressure matches filter’s operational pressure.
7. During installation, use standard flanges and connections only.
8. Check that all filter flange bolts are properly secured.
9. Please note, the filter enters a flushing mode automatically, without prior warning.
10. Use original parts only when servicing the filter.
11. Arkal cannot accept responsibility for any changes or modifications to the equipment.

SERIES-B
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Description & Operation
Filter Assembly General Description (Figure 1)
The B SERIES self-cleaning filter enables high quality filtration from grades of 50-400 micron
from various types of water sources such as sewage, reservoirs, rivers, lakes, and wells.
The B SERIES filter contains the following parts:
1. Inlet 7. Dirt collector
2. Fine screen 8. Suction nozzle
3. Electronic control unit 9. Hydraulic motor
4. Hydraulic flushing valve 10. Differential pressure indicator
5. Hydraulic piston 11. Solenoid valve
6. Hydraulic motor chamber 12. Outlet
Figure 1: Filter Assembly
10
456
7
11
3
1
2
12
8
9

SERIES-B
-5-
Filter Operation General Description (Figure 1)
Water enters the filter through the “Inlet” (1). The water then reaches the fine screen (2),
which purifies the flow by separating smaller particles from the water. As more water
flows through, impurities build up on the fine screen.
As impurities on the screen accumulate, a pressure imbalance is built up between the
internal section of the fine Screen (2) and its external section.
When the difference in pressure (∆P) reaches the preset value on the electronic control unit
(3), a series of events is triggered while water continues to flow to the system units. The
flushing valve (4) opens, pressure is released from the hydraulic piston (5), and water
flows outside. Pressure in the hydraulic motor chamber (6) and the dirt collector (7) is
significantly lowered, and the dirt collector nozzles (8) begin a suction process. The water
flows through the hydraulic motor (9), which rotates the dirt collector (7) around its axis.
The pressure released from the piston and the high pressure inside the filter, cause linear
movement of the dirt collector. The combination of the linear movement and rotation
significantly cleans the whole internal screen surface. The flushing cycle takes
5 seconds. The flushing valve (4) closes at the end of the cycle and the increased
water pressure returns the system to its initial position. The filter is now ready for the
next cycle, with clean and filtered water flowing through the “Outlet” (12).
General Description of the Electronic Control System (Figure 1)
The electrical system controls the cleaning process through the differential pressure indicator (10),
that closes a circuit and triggers the electronic control unit (3) that controls the opening and the
closing of the flushing valve (4) via the solenoid valve (11). The flushing cycle, which
takes a total of 5 seconds, resumes its operation whenever the difference in
pressure reaches the preset pressure value set on the differential pressure indicator. If
the difference in pressure remains unchanged after one cycle, another cycle will start after a delay
of 25 seconds.
Figure 1: Filter Assembly
10
456
7
11
3
12
12
8
9

SERIES-B
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Technical Data
Standard Features
• Minimum operating pressure: 2 bar (29 psi)
• Maximum operating pressure: 10 bar (145 psi)
• Clean filter pressure loss: 0.1 bar (1.45 psi)
• Maximum water temperature: 65°C (149°F)
• Filtration range: 50-400 micron
• Control voltage: 12V DC, 24V DC
• Flush water consumption (at minimum working pressure): 7 liters (2.11 gallons)
• Filter housing materials: carbon steel coated with baked on epoxy
• Available connections: M = Threaded socket V = Vic. F = Flange
General Technical Data
Model
Number
Conn.
Size ØD
Screen
Area
* Max. Flow
Rate
** Flushing
Flow Rate ØD1 X Y H Weight
(inch) (cm
2
) (m
3
/h) (m
3
/h) (inch) (mm) (mm) (mm) (Kg)
AK B2 2 1100 30 6 10 177 174 480 24
AK B2-S 2 1630 30 6 10 177 174 625 26
AK B3 3 1100 40 6 10 192 188 495 25
AK B3-S 3 1630 50 6 10 192 188 640 27
AK B4 4 1630 80 6 10 220 210 650 28
B = Compact S = Filter with large filtration area
* Flow rate data are for high quality water at filtration grade of 120 micron.
** Flushing flow rate data are for minimum operational pressure (2 bar / 29 psi).
Filtration Grade Conversion Table
Micron 50 80 100 120 150 200 400
Mesh 300 200 150 120 100 80 40

SERIES-B
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Pressure Loss At 120 Micron
3
44 88 132 176 264
352440
220 308 396 880 1320 4400 14.5
11.6
8.7
5.8
4.35
2.91
1.45
0.73
0.58
0.3
0.145
P (PSI)
GPM
M /H
10 20 30 40 60 80 100 200 300 1000
50 70 90
P (BAR)
1
0.8
0.6
0.4
0.3
0.2
0.05
0.04
0.02
0.01
0.1

SERIES-B
-8-
Initial Installation & Operation
General
The filter assembly is protectively packed with all parts assembled.
Installation (Figure 2)
1. Remove the filter assembly from the carton.
2. Connect the filter assembly to the inlet line and outlet line.
3. Connect a drain pipe to the hydraulic flushing valve outlet opening (at least 40 mm
diameter and not more than 5 m long) Confirm that water runs freely out of the drainpipe.
4. Check that all connections are properly secured.
5. Check that all nuts and bolts on filter periphery are properly tightened and secured.
6. Connect the battery located in the control unit box as explained in the “Initial Operation ” (See
Figure 3 Page 9).
Figure 2: Initial Filter Installation
Outlet Line
LP
Inlet Line
Solenoid
Opereting
Handle
Differential Pressure
Indicator
Control Unit
Hydraulic
Piston
Hydraulic Flushing
Valve
HP

SERIES-B
-9-
Initial Operation
1. Gradually open the inlet valve (make sure that the outlet valve, if installed, is open).
WARNING
Take precaution while operating the filter as the filter may enter a flushing
mode automatically, without prior warning.
2. Check the filter assembly and its connections for leaks.
3. Perform a flushing cycle by disconnecting the low pressure tube from the differential pressure
indicator (closing of the electrical circuit) – re-connect it immediately as flushing starts.
4. Verify that the hydraulic flushing valve closes after 5 seconds.
5. Verify that the hydraulic piston fully extends during backflush.
6. When the filter is clean, verify that the differential pressure between inlet and outlet does not
exceed 0.1 bar.
7. Check that the differential pressure indicator is set to 7 psi or 0.5 bar.
8. Perform an additional flushing cycle manually by operating the handle (turn clockwise 90°)
located on the solenoid valve (See Figure 3).
Figure 3: Battery Removal & Installation
Operating
Handle

SERIES-B
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Maintenance & Periodical Checks
9V Battery Removal & Installation (Figure 3)
The 9V battery enables the electronic control unit's operation. The battery can last for 3000
flushing cycles, but should be replaced every six months. Use ONLY ALKALINE type battery.
1. Remove the 4 screws attaching the electronic control unit cover.
2. Disconnect and remove the used battery.
3. Connect a new battery according to the correct polarity.
4. Secure the electronic control unit cover with the 4 screws.
WARNING
Take precautions while operating the filter as the filter may enter a flushing
mode automatically, without prior warning.
5. For AC controlled filter, refer to Appendix 1.
6. Perform a flushing cycle by disconnecting the low pressure tube from the differential pressure
indicator (closing of the electrical circuit) – re-connect it immediately as flushing starts.
7. Verify that the hydraulic flushing valve closes after 5 seconds.
8. Perform an additional flushing cycle manually, by operating the handle (turn clockwise 90°)
located on the solenoid (See Figure 3).
Figure 3: Battery Removal & Installation
Operating
Handle

SERIES-B
-11-
Control Card Removal & Installation (Figure 4)
The electronic control unit contains the control card, which enables the filter's
self-cleaning process.
1. Remove the 4 screws attaching the electronic control unit cover.
2. Disconnect and remove the 9V battery.
3. Pull out the defective control card.
4. Disconnect the electrical wiring from the control card terminals (white, red and black wires
for solenoid, two wires for differential pressure indicator).
5. Connect the electrical wiring to the new control card terminals (white (+), red (o) and black (c)
wires for the solenoid, two wires (D & P) for the differential pressure indicator).
6. Insert the new control card.
7. Connect the 9V battery according to the correct polarity.
8. Secure the electronic control unit cover with the 4 screws.
WARNING
Take precautions while operating the filter as the filter may enter a flushing
mode automatically, without prior warning.
9. For AC controlled filter, refer to Appendix 1.
10. Perform a flushing cycle by disconnecting the low pressure tube from the differential pressure
indicator (closing of the electrical circuit) – re-connect it immediately as flushing starts.
11. Verify that the hydraulic flushing valve closes after 5 seconds.
12. Perform an additional flushing cycle manually, by operating the handle (turn clockwise
90°) located on the solenoid (See Figure 4).
Figure 4: Control Card Removal & Installation
+
O
C
D
P
White
Black
Red
Differential
Pressure
Indicator
Electric Control
Unit Cover
Operating
Handle

SERIES-B
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Solenoid Removal & Installation (Figure 5)
The solenoid hydraulically controls the flushing valve's operation.
1. Remove the 4 screws attaching the electronic control unit cover, disconnect and remove the
9V battery.
2. Disconnect the solenoid control tubes.
3. Remove the fittings from the damaged solenoid.
4. Disconnect the electrical wiring from the control card terminals (white (+), red (o) and
black (c) wires).
5. Remove the nut from the solenoid lower section.
6. Pull the solenoid out of the control assembly.
7. Insert a new solenoid into the control assembly.
8. Install the nut on the solenoid lower section.
9. Install the fittings on the ports of the new solenoid.
10. Connect the electrical wiring to the control card terminals (white, red and black wires)
(See Figure 5).
11. Connect the solenoid control tubes.
12. Connect the 9V battery according to the correct polarity and secure the electronic control unit
cover with the 4 screws.
WARNING
Take precautions while operating the filter as the filter may enter a flushing
mode automatically, without prior warning.
13. For AC controlled filter, refer to Appendix 1.
14. Perform a flushing cycle by disconnecting the low pressure tube from the differential pressure
indicator (closing of the electrical circuit) – re-connect it immediately as flushing starts.
15. Verify that the hydraulic flushing valve closes after 5 seconds.
16. Perform an additional flushing cycle manually, by operating the handle (turn clockwise 90°)
located on the solenoid (See Figure 3).

SERIES-B
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Figure 5: Solenoid Removal & Installation
Control Card
White
Black
Red
Control Tube
Drain
+
D
C
D
P

SERIES-B
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Differential Pressure Indicator Removal & Installation (Figure 6)
The differential pressure indicator supplies data to the electronic control unit which controls the
filter's self-cleaning process.
1. Disconnect the two control tubes from the differential pressure indicator.
2. Remove the 4 screws attaching the electronic control unit cover, disconnect and
remove the 9V battery.
3. Disconnect the electrical wiring from the control card terminals.
4. Remove the two nuts located at the bottom of the electronic control unit assembly.
5. Pull the differential pressure indicator out of the control assembly.
6. Insert a new differential pressure indicator into the control assembly.
7. Install the two nuts at the bottom of the electronic control unit assembly.
8. Connect the two control tubes to the differential pressure indicator (note that the high pressure
and the low pressure are connected to the right fittings).
9. Connect the electrical wiring to terminals D & P on the control card (See Figure 6).
10. Connect the 9V battery according to the correct polarity and secure the electronic control unit
cover with the 4 screws.
WARNING
Take precautions while operating the filter as the filter may enter a flushing
mode automatically, without prior warning.
11. For AC controlled filter, refer to Appendix 1.
12. Perform a flushing cycle by disconnecting the low pressure tube from the differential pressure
indicator (closing of the electrical circuit) – re-connect it immediately as flushing start.
13. Verify that the hydraulic flushing valve closes after 5 seconds.
14. Perform an additional flushing cycle manually, by operating the handle (turn clockwise 90°)
located on the solenoid (See Figure 3).

SERIES-B
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Figure 6: Differential Pressure Indicator Removal & Installation
Hige Pressure
Line (HP)
Low Pressure
Line (LP)
Control Card
+
O
C
D
P

SERIES-B
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Hydraulic Piston Removal & Installation (Figure 7)
The hydraulic piston enables the linear movement of the dirt collector.
1. Close the inlet and the outlet line valves.
2. Verify that the filter is drained prior to service.
3. Disconnect the control tube from the piston assembly’s upper section.
4. Carefully unscrew and remove the piston assembly’s.
5. Remove the seal from the old piston assembly lower section.
6. Position the seal into the new piston assembly.
7. Carefully install the new piston assembly into the filter assembly.
8. Connect the control tube to the piston assembly’s upper section.
9. Open the inlet and the outlet line valves.
10. Check for leaks.
WARNING
Take precautions while operating the filter as the filter may enter a flushing
mode automatically, without prior warning.
11. For AC controlled filter, refer to Appendix 1.
12. Perform a flushing cycle by disconnecting the low pressure tube from the differential pressure
indicator (closing of the electrical circuit) – re-connect it immediately as flushing starts.
13. Verify that the hydraulic flushing valve closes after 5 seconds.
14. Perform an additional flushing cycle manually, by operating the handle (turn clockwise 90°)
located on the solenoid (See Figure 3).

SERIES-B
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Figure 7: Piston Removal & Installation
Control Tube
Hydraulic Piston