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The rotors do not turn, and cannot be turned
either way by hand:

Failure of the motor

Repair or change motor

The rotors do not turn, and cannot be turned
by hand either way:

Rotors are jammed, stuck or seized

Free the rotors

Check for signs of overheating
(discolouration) and contact Busch Service for
a service/ dismantling for repair

Foreign substances in the pump

Dismantle pump to clean and repair

Abnormal sounds or vibrations:

STOP BLOWER IMMEDIATELY !!

Excessive wear of bearings

Change bearings

Too little gear oil in the pump, or oil in the
pump is worn

Top up with oil/ Change gear oil

Resonance of piping

Provide support for the piping or use flexible
connections

**Abnormal increase of discharge pressure

Refer to cause marked with **

Leakage

Find and stop leaks

Synchronising the rotors

Have the vacuum pump repaired (Busch
service)

Foreign particles in the gear housing

Have the vacuum pump repaired (Busch
service)

Failure of non-return valve

Change non-return valve

Abnormal heat

Abnormal increase of discharge pressure

Refer to causes marked with **

Rotational speed of blower and/ or motor too
low (when using a frequency converter)

Check the minimal admissible rotational speed
and correct

Too much gear oil in the housing

Fill in oil only to the target circle of the oil
sight glass, while the blower is switched off

Ambient temperature too high

Increase ventilation of the machine room/
increase rotational speed (ventilation) of
motor

Blockage of the suction inlet or filter

Clean suction inlet, and clean or change filter

Excessive wear of rotors and consequently
increase of rotor tolerances

Install filter and dismantle blower for repair

Have the vacuum pump repaired (Busch
service)

**Abnormal increase of discharge pressure

Blockage of discharge pipe

Clean discharge pipe

Blockage of system piping

Clean system piping

Primary pump failure

Have the vacuum pump repaired (Busch
service)

Oil leaks

Too much oil in the pump

Fill up oil only to the target circle of the oil
sight glass, while the blower is switched off

Worn or broken mechanical seals
(oil-lubricated single mechanical seals) do not
apply to WY pumps

Change mechanical seals

Ambient conditions and vacuum combined
with pressure operation and high dP

Fit an oil separator, ensure adequate
ventilation

Pump has been tilted or is not level

Install the pump on a horizontal surface

Oil level in the seal housing fluctuates
abnormally (Applies to pumps equipped with
a drop oiler)

Worn or broken mechanical seals

Change mechanical seals

Troubleshooting

Page 19

Содержание WY 4500 C

Страница 1: ...Installation and Operating Instructions Vacuum pumps WY 4500 C Ateliers Busch S A Zone industrielle 2906 Chevenez Switzerland 0870565696 170707 Original instructions Subject to change without notice ...

Страница 2: ...he bearings 10 Checking the magnetic plug from the rear lubrication circuit of the motor bearing 10 Filling in fresh oil for the gears and the bearings 11 Overhaul 11 Removal from Service 11 Temporary Removal from Service 11 Recommissioning 11 Dismantling and Disposal 12 Exploded drawing 13 Spare parts 14 Gasket kit 14 Full service kit 14 Oil 15 Oil type 15 Technical Data 16 Troubleshooting 17 EU ...

Страница 3: ...ses after the vacuum pump has been switched off The vacuum pump is intended for installation in a potentially non explosive environment Max permissible number of startings per hour 6 The vacuum pump is thermally suitable for continuous operation The vacuum pump is capable of holding end pressure Principle of operation The Roots vacuum pumps operate according to the approved principle of the Roots ...

Страница 4: ...evertheless residual risks may remain These operating instructions and the pump itself inform about potential hazards where appropriate Safety instructions can be detected through the keywords DANGER WARNING and CAUTION as follows DANGER Disregard of this safety instruction will always lead to accidents with fatal or serious injuries WARNING Disregard of this safety instruction may lead to acciden...

Страница 5: ...r cardboard foam evaporate a substance that condenses in molecular thickness on the packed good and by its electrochemical properties effectively suppresses corrosion on metallic surfaces However VCI products may attack the surfaces of plastics and elastomers Seek advice from your local packaging dealer VCI packaging ensures good protection against corrosion for a few years even in the most extrem...

Страница 6: ...p in the suction line so that condensates can be drained from the suction line l Make sure that the suction line does not contain foreign matter e g welding slag Discharge connection CAUTION Do not put hands into the outlet aperture Risk of body damage The following guidelines for the discharge line do not apply if the drawn air is discharged into the environment directly at the vacuum pump l Make...

Страница 7: ...nnection 15 kW CAUTION When connecting up the wires into the terminal box please make sure the tightening torque of 3 Nm is adhered to and check with a calibrated torque wrench Nuts M6 Three phase motor connection Star star connection Low voltage Star connection High voltage Thermoswitch connection CAUTION Operation in the wrong direction of rotation can destroy the vacuum pump within a very short...

Страница 8: ...hat the oil level at the gears and bearings is in the target circle of the oil sight glasses l Make sure that the seals of the filler plugs OFP 250 260 are not damaged and positioned correctly Replace seals if damaged l Refit the oil filler plugs OFP 250 260 l Switch on the vacuum pump In case the suction line is equipped with a shut off valve u Close the shut off valve In case the suction line is...

Страница 9: ...tally be switched on again Any dismantling of the pump must be executed by qualified personnel only Before dismantling the end user of the vacuum pump must fill in a Certificate about Absence of Danger which will inform about possible risks and dangers and corresponding measures Without this document duly filled in and signed by an authorised person the pump cannot be dismantled CAUTION During ope...

Страница 10: ...e less than 500 operating hours Extremely short life times indicate malfunctions see Troubleshooting or unsuitable operating conditions If there is no experience available regarding the oil life under the prevailing operation conditions it is recommended to have an oil analysis carried out every 500 operating hours and establish the oil change interval accordingly thereafter Oil Change WARNING Dra...

Страница 11: ...commended that any dismantling of the vacuum pump going beyond the scope of description in this manual should be carried out by specially trained Busch service personnel only CAUTION Risk for the operating safety after improper work on the vacuum pump Risk of explosion Approval for operation of the pump will be void Any dismantling of the vacuum pump going beyond the scope of what is described in ...

Страница 12: ...nation must be documented in a declaration of decontamination Declaration of Decontamination which can be downloaded from www buschvacuum com Used oil and condensates must be disposed of separately in compliance with applicable environmental regulations l Drain the oil u Dispose of the used oil in compliance with applicable regulations l Make sure that all materials and components that must be tre...

Страница 13: ...Exploded drawing Page 13 Exploded drawing ...

Страница 14: ... 633 223 O ring 1 0486 000 633 241 O ring 1 0486 000 647 243 O ring 1 0486 000 647 245 O ring 1 0486 000 647 247 O ring 1 0486 000 647 256 O ring 4 0486 000 647 384 O ring 1 0486 000 686 523 O ring 2 0486 565 397 556 O ring 1 0486 000 761 603 O ring 4 0486 000 711 611 Sealing ring 1 0482 545 177 Full service kit These full service kits contain all relevant gasket kits as well as the wear and tear ...

Страница 15: ...nto contact with the oil must be cleaned Make sure that the bearings are lubricated prior to reassembly l Make sure that the oil type corresponds to specifications Busch YLC 250 B n art 0831 000 054 0 5 l 1 kg WARNING The use of chemically contaminated or polluted oil can lead to hazardous pump conditions which could cause personal injury Oil quantity The quantity of oil specified in the following...

Страница 16: ...al displacement 50 Hz 60 Hz m3 h 4500 5400 Max differential pressure according to DIN 28426 50 Hz 60 Hz hPa mbar 30 30 Nominal motor rating 50 Hz 60 Hz kW 15 15 Nominal motor speed 50 Hz 60 Hz min 1 3000 3600 Weight approx kg 600 Technical Data Page 16 ...

Страница 17: ...Reaching operational pressure takes too long In case an inlet filter is installed on the suction side The filter on the suction flange is partially clogged Clean or change the filter Partial clogging or blockage in suction or discharge lines Remove foreign particles Suction or discharge lines too long or too small diameter Use larger diameter lines Internal parts worn or damaged Have the vacuum pu...

Страница 18: ...Check the proper connection of the wires against the wiring diagram Tighten or change the connections Wrong oil quantity unsuitable oil type Use one of the recommended oils in the correct quantity see Oil Oil change see Maintenance Foreign particles in the vacuum pump Seized bearings Have the vacuum pump repaired Busch service The vacuum pump is very noisy Defective bearings Have the vacuum pump r...

Страница 19: ...le rotational speed and correct Too much gear oil in the housing Fill in oil only to the target circle of the oil sight glass while the blower is switched off Ambient temperature too high Increase ventilation of the machine room increase rotational speed ventilation of motor Blockage of the suction inlet or filter Clean suction inlet and clean or change filter Excessive wear of rotors and conseque...

Страница 20: ......

Страница 21: ...and following the standards Standard Title of the standard EN ISO 12100 2010 Safety of machinery Basic concepts general principles of design EN ISO 13857 2008 Safety of machinery Safety distances to prevent hazard zones being reached by the upper and lower limbs EN 1012 1 2010 EN 1012 2 1996 A1 2009 Compressors and vacuum pumps Safety requirements Part 1 and 2 EN ISO 2151 2008 Acoustics Noise test...

Страница 22: ...Note ...

Страница 23: ...Note ...

Страница 24: ... Majang myun Icheon si Gyunggi do 467 813 Republic of Korea Phone 82 31 645 2700 Fax 82 31 631 2898 e mail busch busch co kr Malaysia Busch Malaysia Sdn Bhd 4 6 Jalan Taboh 33 22 Seksyen 33 Shah Alam Technology Park 40400 Shah Alam Selangor Darul Ehsan Phone 60 3 5122 2128 Fax 60 3 5122 2108 e mail busch busch com my Mexico Busch Vacuum Mexico S de R L de C V Tlaquepaque 4865 Los Altos Monterrey N...

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