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Operation & maintenance manual, Drum filter HDF 12/16/20/24 -series

If necessary clean the chemical ramp’s nozzles as set out below:

1. Remove the nozzle by turning it a 1/4 turn anticlockwise (see Figure 8.6).

2. Clean the nozzle with compressed air or a plastic brush. Never use a wire brush, metal pins or

similar as these can damage the nozzle.

3. Refit the nozzle.

Figure 8.6 Nozzles on chemical ramp

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Содержание HDF 12 Series

Страница 1: ...Drumfilter HDF 12 16 20 24 series Operation and maintenance manual Revised 2019 03 19...

Страница 2: ...y stop 7 2 6 Electrical safety 7 2 7 Safety instructions 7 3 1 Overview 9 3 2 Identifying the filter 11 4 RECEPTION AND HANDLING 12 4 1 Reception 12 4 2 Storage 12 4 3 Lifting the equipment 12 5 GENER...

Страница 3: ...otation washing 18 6 2 3 Operating mode AUTO automatic level control 18 6 2 4 Adjusting the level sensor 18 6 2 5 Adjusting delay time 18 6 2 6 Setting the level relay 18 6 3 Backwash system 19 6 4 Re...

Страница 4: ...ing the drive chain for wear 29 8 5 2 Checking drive chain tension 29 8 5 3 Adjusting drive chain tension 30 8 5 4 Replacing the drive chain 31 8 6 Drive chain drive with chain type H78 32 8 6 1 Check...

Страница 5: ...manual If this information is ignored it may result in serious per sonal injury and or damage to equipment The manual must always be available to personnel working with the equipment It is important...

Страница 6: ...ly be performed by authorised personnel Adequate lighting should be used when working and operating the filter 2 1 Warning symbols Warning symbols are used in this manual to draw attention to potentia...

Страница 7: ...electrician and in accordance with local regulations Also see Appendix D The fil ter tank or the frame must be connected to ground Also see section 5 4 The main power switch emergency stop must be fi...

Страница 8: ...on and in front of the support wheels Always make sure these are secured and correctly fitted The aerosols from the backwash water may contain harmful substances Measured noise levels from the filter...

Страница 9: ...9 Operation maintenance manual Drum filter HDF 12 16 20 24 series 3 HYDROTECH DRUM FILTER 12 16 20 SERIES 3 1 Overview Figure 3 1 HDF12 16 20 24 series components filter with stand...

Страница 10: ...10 Operation maintenance manual Drum filter HDF 12 16 20 24 series Figure 3 2 HDF12 16 20 24 filter with tank...

Страница 11: ...Identifying the filter The filter type serial number and year of manufacture are stated on the identification plate The filter type and serial number are also stated on the front of this manual Figur...

Страница 12: ...if stored outdoors Heat and UV radiation can damage the filter elements If the filters are delivered in plastic covered wooden crates a special type of corrosion may occur if stored outdoors especiall...

Страница 13: ...res above 5 C and air temperatures above 10 C At lower water and air temperatures filter in stallation should be indoors 5 1 2 Foundations The filter must be installed on a flat surface with sufficien...

Страница 14: ...ctrical work 5 5 Checking drum rotation Start drum rotation and check that the drum rotates in the same direction as the rotation arrow on the drive unit cover 5 6 Pipe connections Nominal pipe dimens...

Страница 15: ...ement and allow unfiltered water to run into the filter tank chamber A greater difference in water level between the inside and outside of the filter drum than 450 mm will damage the filter 6 When the...

Страница 16: ...ND mode 2 Automatic level control AUTO mode Turn the mode selector to select the operating mode see E in Figure 6 1 Figure 6 1 Hydrotech control cabinet type PFC option A DRUM DRIVE TRIPPED LED that i...

Страница 17: ...between the water level inside and out side the drum is 250 mm during normal operation see Figure 6 3 The recommen ded level difference is 100 200 mm If an even flow after the filter is required the...

Страница 18: ...lacement depends on the turbulence of the water surface see Figure 6 4 NB Prior to service read section 2 7 Safety instruc tions 6 2 5 Adjusting delay time A time relay logic module is used to delay t...

Страница 19: ...system pressure for backwashing must be set to 7 9 bar Newly connected pipe systems for external wash water should be flushed before they are con nected to the filter Check that the nozzles are not b...

Страница 20: ...2 Solid particles are separated from the water by the filter fabric that is mounted on the outside of the filter elements while the clean water passes through the fabric to the outside of the drum 3...

Страница 21: ...in power switch to the OFF 0 position and the mode selector to the 0 OFF position If the used backwash water supp ly unit is not from Hydrotech ensure that the supply of backwash water is turned off 2...

Страница 22: ...vers and lock them in place 10 Start operation again as in section 6 1 Check measures for restart It is important that the nozzle nuts see Figure 8 2 are refitted correctly after the nozzles have been...

Страница 23: ...Drum filter HDF 12 16 20 24 series Figure 8 4 1 Lechler nozzle components A Top nozzle attachment B Rubber seal C Top Nozzle nut self cleaning optional Bottom Standard nozzle D Bottom nozzle attachme...

Страница 24: ...1 Turn the main power switch to the OFF 0 position and lock it with a padlock 2 Drain the wash water filter by removing the cover at the bottom of the filter 3 Remove the lower part of the filter 4 R...

Страница 25: ...affixed to the filter NB Prior to service read section 2 7 Safety instructions HDF24 series filter The drum s centre s shaft is equipped with ball bearings that must be lubricated The support wheels...

Страница 26: ...er medium are diluted hydrochloric acid HCl diluted sodium hypochlorite NaClO and diluted sodium hydroxide NaOH The use of other types of cleaning agents may cause damage to the equipment The cleaning...

Страница 27: ...l ramp s nozzles as set out below 1 Remove the nozzle by turning it a 1 4 turn anticlockwise see Figure 8 6 2 Clean the nozzle with compressed air or a plastic brush Never use a wire brush metal pins...

Страница 28: ...t the new filter element under the tensioning strap as far as possible carefully adjusting it horizontally 7 Press down the tensioning strap and filter element alig ning the holes in the tensioning st...

Страница 29: ...locked in the OFF 0 position with a padlock 8 5 2 Checking drive chain tension Wear to the centre shaft s bearings or to the drive chain affects the chain tension Check the drive chain tension as foll...

Страница 30: ...is attained see section 8 5 2 Check ing drive chain tension So that the worm gear can be kept horizontal the two screws should be adju sted one at a time and a little at a time Use a spirit level to e...

Страница 31: ...e worm gear in place See 1 in Figure 8 9 Figure 8 10 3 Lower the worm gear using the nuts 2 in Figure 8 9 Figure 8 10 4 Remove the chain lock and chain 5 Fit the new chain and a new chain lock 6 Adjus...

Страница 32: ...h is locked in the OFF 0 position with a padlock 8 6 2 Checking drive chain tension Wear to the centre shaft s bearings or to the drive chain affects the chain tension Check the drive chain tension as...

Страница 33: ...see Figure 8 12 3 Loosen the nut that locks the adjustment screw 4 Adjust the drive chain tension with the adjusting screw 5 Tighten the four nuts that hold the worm gear in place 6 Tighten the nut th...

Страница 34: ...ew chain and lock it with a pin 7 Adjust the drive chain tension according to section 8 6 3 Adjusting drive chain tension 8 Start operation again as set out in section 6 1 The chain tension of a new c...

Страница 35: ...ons First turn the main power switch to the OFF 0 position and then lock it with a padlock before performing any work on the filter Every week or at another interval based on expe rience from the appl...

Страница 36: ...Follow the gear box manufactorers recommenda tion Hydrotechs recommendation is to do this using a suction hose due to space restrictions NB Prior to service read section 2 7 Safety instructions See A...

Страница 37: ...be on when the relay is powered C Replace the defective level relay D The FILL EMPTY selector is in the FILL position D Set the selector to the EMPTY po sition 2 The filter does not stop after the tim...

Страница 38: ...nformation about lubrication Symbol displaying moving parts Neg ligence to comply with safety regula tions may lead to injury This symbol is placed where certain attention is needed when handling the...

Страница 39: ...echnomaps veoliawatertechnologies com hydrotech en Click on Manuals technical information in the list on the left side Select the product you want more information about and it will open a Pdf in a ne...

Страница 40: ...AB A Veolia Solutions Technologies Company Mejselgatan 6 235 32 Vellinge Sverige Telefon 46 0 40 42 95 30 Fax 46 0 40 42 95 31 E mail mailbox hydrotech se Hemsida www hydrotech se Copyright All rights...

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