background image

Product Description

Use

The vacuum pump is intended for

the suction

of

air and other dry, non-aggressive, non-toxic and non-explosive
gases

Conveying media with a lower or higher density than air leads to an in-
creased thermal and/or mechanical load on the vacuum pump and is
permissible only after prior consultation with Busch.

In case the vacuum pump is equipped with a gas ballast (optional) wa-
ter vapour within the gas flow can be tolerated within certain limits
(

 

page 8: Conveying Condensable Vapours). The conveyance of

other vapours shall be agreed upon with Busch.

The vacuum pump is intended for the placement in a non-potentially
explosive environment.

Version with oil return line to the suction connection (RC 0006 C/E):

The vacuum pump is thermally suitable for continuous operation
(100 percent duty).

Version with oil return valve (RB 0006 C/E):

The vacuum pump is thermally suitable for continuous operation (ob-
serve the notes with regard to the oil recirculation:

 

page 3: Oil Cir-

culation;

 

page 8: Oil Return).

The vacuum pump is ultimate pressure proof.

Principle of Operation

The vacuum pump works on the rotating vane principle.

A circular rotor is positioned centrically on the shaft of the vacuum
pump (i.e. drive motor shaft).

The rotor rotates in an also circular, fixed cylinder, the centreline of
which is offset from the centreline of the rotor such that the rotor and
the inner wall of the cylinder almost touch along a line. Vanes, sliding
in slots in the rotor, separate the space between the rotor and the cyl-
inder into chambers. At any time gas is sucked in and at almost any
time ejected. Therefore the vacuum pump works almost pulsation free.

In order to avoid the suction of solids, the vacuum pump is equipped
with a screen in the suction connection.

In order to avoid reverse rotation after switching off, the vacuum
pump is equipped with a non-return valve.

Note

: This valve shall not be used as a non-return valve or shut-off

valve to the vacuum system and is no reliable means to prevent suction
of oil into the vacuum system while the vacuum pump is shut down.

In case the vacuum pump is equipped with a gas ballast (optional):

Through the gas ballast a small amount of ambient air is sucked into
the pump chamber and compressed together with the process gas. This
counteracts the accumulation of condensates from the process gas in-
side the vacuum pump (

 

page 8: Conveying Condensable Vapours).

The gas ballast line is equipped with a paper filter.

Oil Circulation

The vacuum pump requires oil to seal the gaps, to lubricate the vanes
and to carry away compression heat.

The oil reservoir is located on the pressure side of the vacuum pump
(i.e. high pressure) at the bottom of the bottom chamber of the oil
separator (f).

The feed openings are located on the suction side of the vacuum pump
(i.e. low pressure).

Forced by the pressure difference between pressure side and suction
side oil is being drawn from the oil separator (f) through the oil supply
lines and injected on the suction side.

Together with the sucked gas the injected oil gets conveyed through
the vacuum pump and ejected into the oil separator (f) as oil mist. Oil
that separates before the exhaust filter accumulates at the bottom of
the bottom chamber of the oil separator (f).

Oil that is separated by the exhaust filter accumulates at the bottom of
the upper chamber of the oil separator (f).

The flow resistance of the exhaust filters causes the inside of the ex-
haust filters (which is connected to the bottom chamber of the oil sep-
arator) to be on a higher pressure level than the outside of the exhaust
filters (i.e. the upper chamber of the oil separator). Because of the
higher pressure in the bottom chamber it is not possible to let oil that
drips off the exhaust filters simply flow down to the bottom chamber.

Version with oil return line to the suction connection (RC 0006 C/E):

Therefore the oil that accumulates in the upper chamber is sucked
through the oil return line right to the suction connection.

Version with oil return valve (RB 0006 C/E):

At continuous operation this would cause the entire supply of oil to ac-
cumulate at the bottom of the upper chamber, expel oil droplets
through the gas discharge/pressure connection and let the vacuum
pump run dry. Therefore the vacuum pump must be shut down at the
latest after 0.5 hours of continuous operation, depending on the oper-
ating conditions even after a shorter period, for at least approx. 5 min-
utes (

 

page 7: Operation Notes). After turning off the vacuum pump

the pressure difference between the inside and the outside of the ex-
haust filter(s) collapses, hence the two chambers of the oil separator
assume an equal pressure level, the oil return valve between the two
chambers opens and the accumulated oil in the upper chamber can run
down to the bottom chamber.

Cooling

The vacuum pump is cooled by

radiation of heat from the surface of the vacuum pump incl. oil
separator (f)

RB/RC 0006 C/E

Product Description

0870152229

page 3

a

Directional arrow

b

Oil fill plug

c

Suction connections

d

Gas discharge

e

Nameplate

f

Oil separator

g

Oil sight glass

Summary of Contents for R5 RB 0006 C

Page 1: ...Installation and Operating Instructions Vacuum Pumps R5 RB RC 0006 C E 0870152229 0001 28 10 2021 Original instructions ...

Page 2: ... and Disposal 11 Troubleshooting 12 Spare Parts Kits 17 Accessories 17 Oil 17 EU Declaration of Conformity 18 RB RC 0006 C E Preface 0870152229 page 2 Preface Congratulations on your purchase of the Busch vacuum pump With watchful observation of the field s requirements innovation and steady development Busch delivers modern vacuum and pressure solutions worldwide These operating instructions cont...

Page 3: ...ith a paper filter Oil Circulation The vacuum pump requires oil to seal the gaps to lubricate the vanes and to carry away compression heat The oil reservoir is located on the pressure side of the vacuum pump i e high pressure at the bottom of the bottom chamber of the oil separator f The feed openings are located on the suction side of the vacuum pump i e low pressure Forced by the pressure differ...

Page 4: ...west possible level only gen uine Busch exhaust filters shall be used The oil in the process gas is separated to the greatest possible extent but not perfectly CAUTION_a The gas conveyed by the vacuum pump contains remainders of oil Aspiration of process gas over extended periods can be harmful The room into which the process gas is discharged must be suffi ciently vented Note The possibly sensibl...

Page 5: ...the vacuum pump is installed in a colder environment than al lowed with the oil used Fit the vacuum pump with a temperature switch and control the vacuum pump such that it will start automatically when the oil sump temperature falls below the allowed temperature ambient pressure atmospheric Make sure that the environmental conditions comply with the pro tection class of the drive motor according t...

Page 6: ...discharge Electrical Connection Controls Make sure that the stipulations acc to the EMC Directive 2004 108 EC and Low Voltage Directive 2006 95 EC as well as the EN standards electrical and occupational safety directives and the local or national regulations respectively are complied with this is the responsibility of the designer of the machinery into which the vacuum pump is to be incorporated p...

Page 7: ...h on the vacuum pump In case the suction line is equipped with a shut off valve Close the shut off valve In case the suction line is not equipped with a shut off valve Cover the suction connection c with a piece of rubber mat Let the vacuum pump run for a few minutes Shut down the vacuum pump and wait a few minutes Check that the level is between the MIN and the MAX markings of the sight glass g I...

Page 8: ...s start Open the shut off valve in the suction line At the process end Close the shut off valve in the suction line Operate the vacuum pump for another approx half an hour Maintenance DANGER_age32 In case the vacuum pump conveyed gas that was contaminated with foreign materials which are dangerous to health harmful ma terial can reside in filters Danger to health during inspection cleaning or repl...

Page 9: ... oil indicates contamination with foreign material Oil that is either contaminated with foreign material or burnt must be changed page 9 Oil Change In case the oil appears to be contaminated with water or other conden sates despite proper use of the gas ballast Replace the filter Oil Life The oil life depends very much on the operating conditions A clean and dry air stream and operating temperatur...

Page 10: ...is running Check that the drive motor current drawn is in the usual range Version with oil return valve RB 0006 C E Note The discharged gas will also contain oil if the vacuum pump is operated without interruption for too long a period page 7 Opera tion Notes Check that the discharged gas is free from oil Assessment If the drive motor draws too much current and or the pump flow rate has dropped th...

Page 11: ...Risk of vane breakage if the vacuum pump is started with the drive motor After longer periods of standstill the vacuum pump shall be turned by hand After longer periods of standstill Make sure that the vacuum pump is locked against inadvertent start up Remove the cover around the fan of the drive motor Slowly rotate the fan wheel by hand several revolutions in the intended direction of rotation se...

Page 12: ...e most common cause Change the oil page 8 Maintenance No or not enough oil in the reservoir Top up oil page 8 Maintenance The exhaust filter is partially clogged Replace the exhaust filter page 8 Maintenance The screen in the suction connection c is par tially clogged Clean the screen If cleaning is required too frequently install a filter upstream In case a filter is installed on the suction conn...

Page 13: ...Repair the vacuum pump Busch service The drive motor is defective Replace the drive motor Busch service The vacuum pump is blocked Solid foreign matter has entered the vacuum pump Repair the vacuum pump Busch service Make sure the suction line is equipped with a screen If necessary additionally provide a filter Corrosion in the vacuum pump from remain ing condensate Repair the vacuum pump Busch se...

Page 14: ...extended period of time Perform oil change incl flushing page 8 Maintenance The exhaust filter is clogged and appears black from burnt oil Flush the vacuum pump Replace the exhaust filter Fill in new oil page 8 Maintenance In case the oil life is too short use oil with better heat resistance page 17 Oil or ret rofit cooling Foreign objects in the vacuum pump Broken vanes Stuck bearings Repair the ...

Page 15: ...s without interruption oil can collect in the upper chamber of the oil separator f to an extent that it gets expelled together with the discharged gas Regularly shut down the vacuum pump for short periods of time Check that the oil return valve functions properly and lets oil run from the upper into the bottom chamber of the oil separator f as soon as the vacuum pump is shut down page 3 Oil Circul...

Page 16: ...he exhaust filter Fill in new oil page 8 Maintenance Make sure the proper oil is used for changing and topping up The oil foams Mixing of incompatible oils Flush the vacuum pump Replace the exhaust filter Fill in new oil page 8 Maintenance Make sure the proper oil is used for topping up Troubleshooting page 16 RB RC 0006 C E 0870152229 ...

Page 17: ...n Australia Busch Australia Pty Ltd 30 Lakeside Drive Broadmeadows Vic 3047 Tel 03 93 55 06 00 Fax 03 93 55 06 99 Your point of contact for service and spare parts in New Zealand Busch New Zealand Ltd Unit D Arrenway Drive Albany Auckland 1311 P O Box 302696 North Harbour Auckland 1330 Tel 0 9 414 7782 Fax 0 9 414 7783 Find the list of Busch companies all over the world by the time of the publicat...

Page 18: ...have been used to fulfil those provisions Standard Title of the Standard EN ISO 12100 2010 Safety of machinery Basic concepts general principles of design EN ISO 13857 2019 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 Part 2 EN ISO 2151 2008 A...

Page 19: ...machinery Basic concepts general principles of design Risk assess ment and risk reduction BS EN ISO 13857 2019 Safety of machinery Safety distances to prevent hazard zones being reached by the upper and lower limbs BS EN 1012 1 2010 BS EN 1012 2 1996 A1 2009 Compressors and vacuum pumps Safety requirements Air compressors and vacuum pumps BS EN ISO 2151 2008 Acoustics Noise test code for compresso...

Page 20: ......

Page 21: ... Italy info busch it Japan info busch co jp Korea busch busch co kr Malaysia busch busch com my Mexico info busch com mx Netherlands info busch nl New Zealand sales busch co nz Norway post busch no Peru info busch com pe Poland busch busch com pl Portugal busch busch pt Romania office buschromania ro Russia info busch ru Singapore sales busch com sg South Africa info busch co za Spain contacto bus...

Reviews: