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17

Commercial Filter Manual  | 

BACKWASHING INSTRUCTIONS

Note, this manual does not cover every possible instalment, valving option or customised design. 

Only  trained  and  suitably  qualified  persons  who  understand  the  design  should  operate  the 

equipment. If the system is not operated as it has been designed, excessive flow or pressure build 

up could damage equipment or cause personal injury.

WITHOUT AIR SCOUR

1. 

Shut OFF the pump prior to making any valve position changes

2.  Move influent butterfly valve to the OFF position before moving any other valves

3.  Move the Multiport valve or butterfly valve manifold to the BACKWASH position

4.  When the backwash water in the waste line sight glass appears clear, switch OFF the pump

5.  Move the Multiport valve or Valve Battery to the RINSE position

6.  Switch ON the pump

7. 

When the backwash water in the waste line sight glass appears clear, switch OFF the pump

8.  Move the Multiportvalve or Valve Battery to the FILTER position

9.  Switch ON the pump for normal operation

WITH AIR SCOUR (No Multiport valve)

1. 

Switch OFF the pump and close the isolation valves

2.  Release the filter’s pressure through the easy reach air relief until the Pressure Gauge needle 

drops to zero (0)

3.  Ensure the 2”Air Relief Valve is operational

4.  Move Valve Battery to the BACKWASH position

5.  Open the air blower valve

6.  Switch ON the air blower (for 2-3 minutes)

7. 

Switch OFF air blower and close the air blower valve

8.  Switch ON the pump

9.  When the backwash water in the waste line sight glass appears clear, switch OFF the pump

10.  Move Valve Battery to the RINSE position

11.  Switch ON the pump

12.  When the backwash water in the waste line sight glass appears clear, switch OFF the pump

13.  Move the Valve Battery to the FILTER position

14.  Switch ON the pump for normal operation

Содержание Commercial filter

Страница 1: ...duct Once the product has been installed this manual must be given to the owner operator of this equipment This equipment must be installed and serviced by a qualified technician Improper installation can create hazards which could result in property damage serious injury or death Improper installation will void the warranty WARNING COMMERCIAL FILTER ...

Страница 2: ... MOUNT MODELS 10 WET TESTING 10 ADDING MEDIA 10 LID INSTALLATION 11 DUAL YOKE LID TYPE 11 LOCK RING TYPE 12 INSTALLATION OF MULTIPORT VALVE 13 MULTIPORT VALVE OPERATION 13 BUTTERFLY VALVE MANIFOLD OPERATION 14 FILTER POSITION 14 BACKWASH POSITION 14 RINSE POSITION 14 INITIAL STARTUP 15 BACKWASHING 16 CONDITIONS FOR BACKWASHING 16 IMPORTANCE OF BACKWASHING 16 BACKWASHING INSTRUCTIONS 17 WITHOUT AIR...

Страница 3: ...ment parts and accessories 4 The user should make sure that the installation is carried out by qualified authorised persons and that these persons have first carefully read the following instructions 5 The operating safety of the filter is only guaranteed if the installation and operation instructions are correctly followed 6 In the event of defective operation or fault contact Waterco or its near...

Страница 4: ...maximum rated pressure And 10 bar 145 psi maximum rated pressure in some models Whilst Waterco designs and manufactures Commercial Vessels to a superior quality when designing a system allowances should be made for pressure surges such as Pressure spikes at shut off Pressure build up from dirty media Other unforeseen pressure spikes Maximum clean operating pressure should be at least 40 below maxi...

Страница 5: ...ribution of the water is achieved throughout the filter tank which results in low levels of turbulence and minimal differential pressure losses Water flow paths are parallel and vertical at the surface of the filter media bed resulting in flow capabilities up to 49m3 m2 hr or 20 US gpm ft2 velocity without creating channeling within the media bed depending on media type Water is passed through med...

Страница 6: ...nto the collection laterals or nozzle plate up through the filter bed Wastewater is then collected through the distribution header and exits through the top port This reversal of flow will cause the filter bed to lift and expand also called fluidisation The fluidisation of the media bed allows the collected solids to be released and discharged to waste The hydraulic balance created through the dis...

Страница 7: ...ly 50m3 m2 hr or 3 5 CFM ft2 depending on method and provides a more efficient backwash method saving up to 25 water per backwash The time taken to backwash various types of media will vary depending on 1 If the backwash is air scour assisted 2 The debris density or content of collected material 3 The media type 4 The backwash velocity 5 If flocculants are used As a general guide backwashing using...

Страница 8: ...06 Commercial Filter Manual INSTALLATION LIFTING ...

Страница 9: ...een plant pipework and the vessel flange to facilitate any movement 8 Always use sufficient pipe supports to eliminate stress on bulkhead ports or flanges The piping should be supported independent of the filter 9 Check that the incoming water pressure is within the filter s recommended working pressure 10 A pressure limiting device should be installed to prevent maximum operating pressure being e...

Страница 10: ...ssels with bulkhead ports are suitable for use with Waterco Multiport Valves 50mm 2 65mm 2 5 80mm 3 or 100mm 4 options are available For vessels supplied with flange or bulkhead ports which do not have a Multiport valve the following valve configurations may be used ...

Страница 11: ... nut b Replace the Drain Plug Cap with the adaptor c Connect pipework to the adaptor 18 For SPDD or MPD series vessels ONLY a release the drain plug body assembly taking care not to touch the bulkhead lock nut b remove the drain plug body and lateral and end cap media protection c replace drain plug body with Waterco half union Diagram B either 40mm or 50mm depending on model d connect pipework to...

Страница 12: ...g transit the tank or fittings may have been damaged ADDING MEDIA 1 A coarse 2 5mm gravel under bed may be used around the lateral collector assembly or 100mm over nozzles plates 2 Before filling the media perform a visual check of the laterals Look for broken or loose laterals Replace if necessary 3 Ensure all flanges are secured and pipework is glued 4 Fill the vessel to one third 1 3 of capacit...

Страница 13: ...ommercial Filter Manual LID INSTALLATION NOTE Lubricant should be silicon based and not petrochemical based DUAL YOKE LID TYPE See assemblies section page 20 for further detail Lid with ARV Lid without ARV ...

Страница 14: ...and O ring thoroughly before inserting O ring to the lid 2 Place the lid with O ring installed in position gently pushing into place 3 Place the lock ring over the lid and firmly hand tighten 4 Do not over tighten See assemblies section page 20 for further detail Neck Ring Type ...

Страница 15: ...m the bottom of the filter vessel through the Multiport Valve and back through the piping system 2 Backwash Position for cleaning the filter media Water flow is reversed by the Multiport Valve through the filter bed so that water flow is directed to the bottom of the filter vessel and up through the filter bed flushing the previously trapped dirt and debris out the waste line 3 Rinse Position for ...

Страница 16: ...lter Manual BUTTERFLY VALVE MANIFOLD OPERATION 1 CLOSED FILTER POSITION 2 OPEN 4 CLOSED 3 CLOSED 5 OPEN 1 OPEN BACKWASH POSITION 2 CLOSED 4 CLOSED 3 OPEN 5 CLOSED 1 CLOSED RINSE POSITION 2 OPEN 4 OPEN 3 CLOSED 5 CLOSED ...

Страница 17: ...p run until water is clear through waste line may take up to 3 minutes 9 Perform a rinse cycle for 2 3 minutes 10 Repeat steps 7 9 until the backwash water is as clean as the influent water quality The initial backwashing of the filter is recommended to remove any impurities or fine particles from the filter media 11 Set the vessel to filter and run the pump 12 Record the pressure gauge reading an...

Страница 18: ...ng through the system 3 When the pressure is between 50 to 70 kPa or 7 to 10 psi higher than the start up pressure 4 If the differential pressure required to trigger a backwash is not achieved a backwash should be performed at regular intervals to prevent media solidifying or channelling 5 If the filter is connected to mains water pressure rise is not an accurate indicator as mains pressure tends ...

Страница 19: ...ch ON the pump 7 When the backwash water in the waste line sight glass appears clear switch OFF the pump 8 Move the Multiportvalve or Valve Battery to the FILTER position 9 Switch ON the pump for normal operation WITH AIR SCOUR No Multiport valve 1 Switch OFF the pump and close the isolation valves 2 Release the filter s pressure through the easy reach air relief until the Pressure Gauge needle dr...

Страница 20: ...al will vary depending on water quality 5 Replace the pressure gauge if faulty readings are observed 6 Maintain the 2 Air Relief Valve and or replace if there is any doubt about is operation MEDIA REMOVAL 1 Ensure that the pump or water supply is OFF and that all isolation vales are in the CLOSED position 2 OPEN the air release valve to remove any positive or negative pressure within the vessel 3 ...

Страница 21: ...the lateral manhole Always ensure new Orings are on site prior to removal of top or lateral manholes To remove the lateral manhole 1 Loosen nuts evenly in an oppositely opposed pattern one half 1 2 turn at a time 2 Remove the cover this may take a small amount of leverage to break the seal to O ring 3 Remove the O ring LATERAL MANHOLE ...

Страница 22: ...20 Commercial Filter Manual LID ASSEMBLY LID WITH YOKES With 2 ARV NECK RING STYLE Lid with yokes Lid with yokes Neck Ring Type ...

Страница 23: ...21 Commercial Filter Manual LATERAL NOZZLE ASSEMBLIES STANDARD LATERAL AIR SCOUR LATERAL Air Scour Distribution Lateral Distribution HORIZONTAL VESSEL Lateral Distribution Horizontal Vessel ...

Страница 24: ...22 Commercial Filter Manual NOZZLE PLATE BULKHEAD ASSEMBLY Refer to Sight Glass assembly replacement instructions ...

Страница 25: ...ss assembly replacement instructions Item Description 1 Flange stud ring 2 Gasket flange 3 PVC flange 4 Flange clamp ring 5 Washer 6 Hex nut Flange size No of hex nut Thread diameter Recommend tightening torgue for hex nut bolt with lubricant copperslip N m 3 4 BSW 100 4 8 BSW 100 6 8 BSW 165 8 8 BSW 165 10 12 BSW 240 Flange Exploded view ...

Страница 26: ...le all 4 nut take out the damage flange Clean filter wall Should have silicon old silicon mark Wipe with acetone Apply new silicon layer Silicon layer should cover the bolt hole between bolt Put the gasket Item 2 Put new flange glued supply by WFE Put washer nut Tighten with torque wrench to 50 Nm ...

Страница 27: ...RISING Proper winterising procedures should always be taken in order to protect your filter in cold climates temperatures below freezing point 1 Switch OFF the Pump Close the Inlet Outlet Isolation valves 2 Open the air release valve and move the MPV handle to the winterise position between Filter and Waste This will allow air to through to all ports 3 Remove any drain plugs from the filter 4 Drai...

Страница 28: ...CES OVERSEAS Waterco Europe Limited Sittingbourne Kent UK Tel 44 0 1795 521 733 Waterco USA Augusta USA Tel 1 706 793 7291 Waterco Canada Longueuil Qc Canada Tel 1 450 748 1421 Waterco NZ Limited Auckland New Zealand Tel 64 9 525 7570 Waterco C Limited Guangzhou China Tel 8620 3222 2180 Waterco Far East Sdn Bhd Selangor Malaysia Tel 60 3 6145 6000 PT Waterco Indonesia Jakarta Indonesia Tel 62 21 4...

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