PAF Series flow rates
filtration degrees
water for cleaning
min. operating pressure
up to 50 m続/h (220 US gpm)
500-10 micron
less than 1% of the total flow
1.5 bar (22 psi)
Innovative self-cleaning high quality plastic filter for large variety of applications
features: Unique Electric drive mechanisms Automatic flushing according to pressure differential and/or according to time Option for continuous flushing Low power consumption No interruption of downstream flow during flushing Electronically-monitored cleaning with flexible control options Applications: Water supply systems, cooling water, waste water treatment
How the PAF Filters Work General Timex’s PAF Series consists of easy-to-operate 2” and 3” automatic filters constructed of high quality plastic and driven by electrical or electronic self-cleaning mechanism. The various types of PAF screens designed to cover a range of 500-10 micron filtration degree and flow rates of up to 50 m³/h (220 US gpm).
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The Filtering Process
(2)
(7)
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The water enters the inner area of the screen-cylinder (1) through the filter’s Inlet Pipe (2) and flows throughout the screen-mesh to the filter’s Outlet Pipe (3). The dirt particles are trapped on the inner screen surface and form a “filtration cake” that causes a differential pressure across the screen.
The Self-Cleaning Process During the self-cleaning process, while filtered water continues to flow, the filter’s Exhaust Valve (4) is opened and the Drive Unit (5) spirals the Suction Scanner (6) back and forth. The spiral rotation of the suction scanner nozzles across the inner surface of the screen “vacuums” the filtration cake out the exhaust valve.
The Control System The control system consists of: Timex Electronic Flushing Controller (7), a 3-way Solenoid Valve (8) that controls the filter’s exhaust valve and a Pressure Differential Switch (9) that senses the pressure differential across the screen and sends a signal to the controller when it reaches a pre-set value (usually 0.5 bar/7 psi). (5)
The controller begins a self-cleaning cycle under any of the following conditions: 1. Receiving a signal from the Pressure Differential Switch 2. Time interval parameter set at the controller by the user
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3. Manual Start function at the controller’s keyboard (1)
“PAF” Models
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Timex’s “PAF” product-line consists of electric filters with 220/110 VAC drive unit: 2” PAF 500 for flow rates of up to 25 m³/h (110 US gpm) 2” PAF 750 for flow rates of up to 25 m³/h (110 US gpm) and higher dirt loads 3” PAF 750 for flow rates of up to 50 m³/h (220 US gpm) (4)
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Pressure Loss Graphs
2” PAF-500
PSI 14.0
270 (10.6")
BAR 1.0 0.8 0.6
7.0 0.4
5.0 4.0 3.0
0.2
2.0 1.4
0.1 0.08 0.06
913 (35.9")
0.7 0.5 0.4 0.3
0.04
0.02
0.2
520 (20.5")
M3/Hr US GPM
2.0 6
10
4.0
6.0
20
20
10 40
60
100
50 200
100 400
2” PAF-750 270 (10.6") PSI 14.0
BAR 1.0 0.8 0.6
7.0 0.4
5.0 4.0 3.0
0.2
1034.7 (40.7")
2.0 1.4
0.1 0.08 0.06
0.7
641.7 (25.3")
0.5 0.4
Dim. In mm (inch) *Approx. length required for maintenance
0.3
0.04
0.02
0.2 M3/Hr US GPM
2.0 6
10
4.0 20
6.0
20
10 40
60
100
50 200
100 400
3” PAF-750
Pressure Loss Graphs PSI 14.0
280 (11")
0.6 7.0 0.4
5.0 4.0
391.9 (15.4")
BAR 1.0 0.8
3.0
0.2
2.0 1.4
0.1 0.08 0.06
0.7 0.5 0.4 0.3
0.04
0.02
661.8 (26")
0.2 M3/Hr US GPM
4.0
6.0
20
20
10 40
60
100
50 200
100
200
400 600 1000
3” PAF-750, Flanges PSI 14.0
BAR 1.0 0.8 0.6
7.0 0.4
5.0 4.0
*(1120) (44.1")
3.0
0.2
2.0 1.4
0.06 0.7 0.5 0.4
671 (26.4")
0.3
1074 (42.3")
0.1 0.08
0.04
0.02
0.2 M3/Hr US GPM
Dim. In mm (inch) *Approx. length required for maintenance
4.0 20
6.0
20
10 40
60
100
50 200
100
200
400 600 1000
Technical Specifications Filter Type
2” PAF 500
2” PAF 750
3” PAF 750
Maximum flow rate*
25 m3/h (110 US gpm)
25 m3/h (110 US gpm)
45 m3/h (198 US gpm)
Inlet/Outlet diameter
2”/50 mm
2”/50 mm
3”/80 mm or 3” Flanged
General Data
Standard filtration degrees
500, 300, 200, 130, 100, 80, 50, 25, 10 micron
Min. working pressure
1.5 bar (22 psi) Can be lower if pressure is increased for flushing
Max. working pressure
8 bar (116 psi)
Max. working temperature
60°C (140 °F)
Electrical Supply
110/220 VAC 11.6 kg (25.6 lb)
Weight (empty)
12.4 kg (27.3 lb)
13.0 kg (28.7 lb)
* Consult Timex for optimum flow depending on filtration degree & water quality. Flushing Data Minimum flow for flushing (at 1.5 bar - 22 psi) Reject water volume per flush cycle
4 m3/h (18 US gpm)
5.7 m3/h (25 US gpm)
5.7 m3/h (25 US gpm)
18 liter (4.7 US gallon)
25 liter (6.6 US gallon)
25 liter (6.6 US gallon)
16 seconds
Flushing cycle time
40 mm (1½”)
Exhaust valve Flushing criteria
Differential pressure of 0.5 bar (7psi), time intervals and manual operation
Screen Data 500 cm² (77.5 in²)
Filter area Screen types
750 cm² (116 in²)
St. St. 316 weave wire screen with Polycarbonate construction, SMO-254
Control and Electricity Rated operation voltage
220 V - Single phase 110 upon request
Electric motor
15 Watt 50 / 60 Hz, Gear output 48 / 58 R.P.M.
Current consumption
0.18 A
Control voltage
Electric PAF - 24 VAC
Construction Materials Filter housing and lid
750 cm² (116 in²)
PA+GF
Cleaning mechanism
PVC, Delarin
Exhaust valve
Plastic, Natural rubber
Seals
NBR
Control
Brass, Stainless steel, PE, PP
industry
municipal
irrigation
Automotive, Aviation, Ballast treatment, Electronics, Food & Beverage; Mining, Oil & Gas, Petrochemical, Power Generation, Pulp & Paper
Potable Water, Waste Water, Desalination, Brackish Water, High rise buildings, Pre-filtration to Membranes
Agriculture, Golf & Turf, Aquaculture, Green Houses
Factory Istanbul Yolu 26.km. Yurtorta Sanayi Sitesi Saray / Kazan / ANKARA / TURKEY Tel: +0 312 815 52 46-47, Fax: 0 312 815 52 48 E-mail: fabrika@timex.com.tr Head Office METU Technocity Silikon Bldg. Office 34 ANKARA / TURKEY Tel: 0 312 210 10 40 , Fax: 0 312 210 10 61 E-mail: info@timex.com.tr www.timex.com.tr