Vaughan ROTAMIX SYSTEM Скачать руководство пользователя страница 12 | Manualshive

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Form V372, Rev. 12

- 9 -

12/18, ECN4334

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Содержание ROTAMIX SYSTEM

Страница 1: ...STALLATION OPERATION MAINTENANCE INSTRUCTIONS VAUGHAN CO INC 364 Monte Elma Road Montesano WA 98563 Phone 1 360 249 4042 Fax 1 360 249 6155 Toll Free Phone US only 1 888 249 CHOP 2467 Web Site www chopperpumps com Company E mail info chopperpumps com ...

Страница 2: ...Form V372 Rev 12 10 18 ECN4334 This manual is for all Vaughan Rotamix Systems NOTE The pump for your Rotamix System will require an additional IO M manual ...

Страница 3: ... A Receipt Inspection B Storage Considerations C Installation I Vaughan Foambuster II Roof Mounted Nozzles III System Venting D Nozzle Aiming Instructions 4 STARTUP INSTRUCTIONS Page 7 5 NORMAL OPERATION Page 12 A Digester Mixing B Sludge Tank Mixing C Blend Tank Mixing 7 SHUTDOWN INSTRUCTIONS Page 13 8 MAINTENANCE Page 13 A Routine Maintenance B Corrective Maintenance 9 TROUBLESHOOTING Page 14 10...

Страница 4: ...of low voltage poor ventilation overloaded lines etc These motors can restart automatically as the motor cools down DO NOT work on the pump or motor without first disconnecting and locking out the power supply Enter tanks or pits with extreme caution and only after an instrument check of the pit tank has been completed to verify the absence of dangerous gases and the presence of safe levels of oxy...

Страница 5: ...wn from the pump as a projectile All pumps must be run with suction and discharge piping in place or blind flanges installed on suction and discharge connections Blind flanges should be vented to avoid pressure build up Note that cast rotating parts could break if metal to metal contact occurs while the pump is running dry Shut pump off when adjusting fittings to avoid being sprayed with pumpage P...

Страница 6: ... the crating is damaged look for cracked fittings and clamps or damaged paint report damage to your carrier Vaughan Co can also work with you to provide replacement fittings as needed B STORAGE CONSIDERATIONS The epoxy paint on the nozzle assembly is susceptible to damage from prolonged UV exposure If nozzle assemblies are to be stored for more than two weeks prior to installation they must be eit...

Страница 7: ...ming particularly in activated sludge plants The Foambuster nozzle must be mounted above liquid level Only a few inches of distance is enough to allow the Foambuster to work Also the Foambuster needs about 4 ft of headroom above the height of the nozzle to allow the spray to cover as much of the tank surface as possible The Foambuster works best with a fixed cover Finally the Foambuster is designe...

Страница 8: ...st approach b You can use a solenoid controlled valve 2 is best controlled by a timer in your control panel which would open this valve prior to each startup of the pump Based on experimentation you can determine how long it takes to vent the gas from the system to completely fill the pump casing before the pump starts You can then set the timer to this setting Again run the piping either to a dra...

Страница 9: ...egree mark on the protractor See your Nozzle Layout drawing for the proper angles to set your nozzles Moving the lower nozzle will tend to move the protractor also Be sure to recheck the zero point before tightening the lower nozzle clamp STEP 4 To aim the upper nozzle tie the plumb bob string to the bolt on the nozzle clamp as shown Make sure that it hangs from the the center of the nozzle Loosen...

Страница 10: ...o mixing at allSee the pump IO M Manual for pump startup and operating instructions Vaughan Co requires the Startup Certification Checklist pages with the job specific Vaughan Rotamix tank drawing marked up with nozzle locations nozzle angles nozzle elevations and confirmation of all bolt torques to be sent to Vaughan Engineering If the job specific tank drawing is not available please contact Vau...

Страница 11: ...rmation of all bolt torques to be sent to Vaughan Engineering All verified dimensions should be indicated by a circle or check mark on that dimension Rotamix Drawing No _____________________________ Is drawing attached Yes ____ No ____ Is drawing marked up to show each verified nozzle location Yes ____ No ____ Is drawing marked up to show each verified nozzle angle Yes ____ No ____ SYSTEM DATA Tan...

Страница 12: ..._____ __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________ ___________________...

Страница 13: ...f maintaining continuous mixing during foaming or RVE events is that pockets of feed sludge are continuously mixed with the rest of the digestate spreading out gas generation over a maximum time period to minimize sudden bursts of liberated gas By maintaining continuous mixing at lower speeds the gas generation and therefore the foam generation is kept more under control Reduced energy mixing for ...

Страница 14: ...working order and that the nozzles are still properly aimed Whenever you check the nozzle system inspect the nozzle opening to make sure that the glass coating is still intact If the glass coating and ductile iron metal is worn away replace the nozzle For polyurethane nozzles measure the discharge diameter to make sure that it is no more than 15 larger than it was when new For example a new 2 00 d...

Страница 15: ...ump speed For example if 100 speed is at 60 Hz on your VFD do not run the VFD at less than 45 Hz Too slow of a speed reduces pump and system pressure and can result in nozzle plugging 2 Troubleshooting the nozzles A Historically about of 1 of Rotamix systems experience a plugged nozzle so while blockage can occur it s not a common problem Nozzle blockage may show up as reduced mixing within your d...

Страница 16: ...sentatives is required and can head off problems with installation of incorrect nozzle size D A worn nozzle may show up as increased mixing within your digester or storage tank Other symptoms of a worn nozzle could be higher than normal mixing pump electric motor power requirements higher amps and lower pump discharge pressure compared to your recorded readings at startup You may also hear pump ca...

Страница 17: ... VSR and this means that more gases of decomposition methane and carbon dioxide are generated We want high VSR for better digestion and we want more gas for cogeneration of electricity However generating too much gas in a digester over too little time can lead to foaming RVE issues and possible digester overflows Digester overflow means bad odors a big cleanup and complaints from residential neigh...

Страница 18: ... start If foaming occurs after startup of the mixing system and a Foambuster has not been installed with the system the recovery costs for installing a Foambuster are much higher D Poor mixing can result if the viscosity of the mixed sludge is too high This situation can occur when mixing very thick TWAS thickened waste activated sludge Once TWAS gets up to the range of 6 7 solids mixing may be di...

Страница 19: ...le parts are repaired or replaced by anyone other than Vaughan Co or its duly authorized representatives Vaughan Co assumes no liability for consequential damages of any kind and the purchaser by acceptance of delivery assumes all liability for the consequences of the use or misuse of Vaughan Co products by the purchaser its employees or others Vaughan Co will not be held responsible for travel ex...

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