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BUSCH RA 0305 D - User Manual

BUSCH RA 0305 D
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Instruction Manual
R5 ATEX
Oil-Lubricated Rotary Vane Vacuum Pumps
RA 0165 D, RA 0205 D, RA 0255 D, RA 0305 D
0870570604/-0011_en / Original instructions / Modifications reserved 12/03/2021
Ateliers Busch S.A.
Zone industrielle, 2906 Chevenez
Switzerland

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Questions and Answers

  • M
    Mike SchultzSep 23, 2025
    What causes a BUSCH RA 0305 D Water Pump to fume or expel oil?
    • C
      Cathy WilliamsSep 23, 2025
      If your BUSCH Water Pump is fuming or expelling oil droplets through the gas discharge, the exhaust filters (EF) might be partially clogged and need replacement. Ensure that the exhaust filter (EF) with o-ring is fitted correctly. Another possible cause is a malfunctioning float valve (FV); inspect it and the oil pipe for any blockages, and clear them if necessary.
  • G
    Gabrielle WoodAug 23, 2025
    Why is the oil in my BUSCH RA 0305 D emulsified?
    • D
      Dale HicksAug 25, 2025
      If the oil in your BUSCH Water Pump is emulsified, it might be because the machine sucked in liquids or significant amounts of vapor, in which case you should contact Busch to flush the machine. Also, clean the filter of the gas ballast valve (GB). Consider modifying the operational mode.
  • S
    Shawn RodgersAug 25, 2025
    Why BUSCH Water Pump fumes or expels oil?
    • D
      danielalvarezAug 26, 2025
      If your BUSCH Water Pump is fuming or expelling oil droplets, it could be due to: partially clogged exhaust filters (EF) – replace them; an exhaust filter (EF) with o-ring not fitted properly – ensure correct positioning; or a malfunctioning float valve (FV) – contact Busch for repair.
  • K
    kalvaradoAug 26, 2025
    Why BUSCH RA 0305 D Water Pump has abnormal oil consumption?
    • B
      Bernard ParkerAug 27, 2025
      Abnormal oil consumption in your BUSCH Water Pump can stem from a few issues: oil leaks (contact Busch to replace seals), a malfunctioning float valve (FV) (contact Busch to check and repair the float valve and oil return line), or running the machine at atmospheric pressure for an extended period (ensure the machine operates under vacuum).
  • R
    Rachel HolmesAug 27, 2025
    What does it mean if the oil in my BUSCH Water Pump is emulsified?
    • P
      Patrick GrahamAug 27, 2025
      If the oil in your BUSCH Water Pump is emulsified, it's likely that the machine has sucked in liquids or significant amounts of vapor.
  • J
    Jonathan GraySep 16, 2025
    What to do if BUSCH RA 0305 D Water Pump doesn't reach usual pressure?
    • Z
      Zachary CookSep 16, 2025
      If your BUSCH Water Pump isn't reaching the usual pressure, consider these potential causes: * The oil level might be too low (top up oil). * The inlet screen (IS) could be partially clogged (clean the inlet). * The inlet filter cartridge (optional) might be partially clogged (replace the inlet cartridge). * Internal parts may be damaged; in this case, contact Busch for repair.
  • J
    Jo DavisSep 13, 2025
    Why BUSCH RA 0305 D Water Pump does not start?
    • J
      Jacqueline HunterSep 13, 2025
      Your BUSCH Water Pump might not start due to several reasons: the motor may not be receiving the correct voltage (check the voltage), the motor itself could be defective (replace the motor), or the coupling (CPL) might be defective (replace the coupling).
  • R
    Robert BryantSep 15, 2025
    What to do if BUSCH Water Pump runs too hot?
    • D
      Debra McgeeSep 15, 2025
      If your BUSCH Water Pump is running too hot, it could be due to several reasons: insufficient cooling (remove dust and dirt from the machine), the ambient temperature might be too high (observe the permitted ambient temperature), the oil level might be too low (top up oil), or the exhaust filters (EF) could be partially clogged (replace the exhaust filters).
  • D
    Drew MurphySep 5, 2025
    Why my BUSCH RA 0305 D does not start?
    • M
      Michele BrownSep 6, 2025
      If your BUSCH Water Pump doesn't start, it could be due to several reasons. First, the motor might not be getting the correct voltage, in this case check the power. Alternatively, the motor itself could be defective and need replacement. Finally, a defective coupling (CPL) could also be the culprit, so replace the coupling (CPL).
  • J
    Juan JacksonSep 3, 2025
    Why is my BUSCH Water Pump running very noisily?
    • C
      Christopher MartinezSep 3, 2025
      If your BUSCH Water Pump is operating with excessive noise, it could be due to a worn coupling (CPL), which would need replacement. Alternatively, stuck vanes or defective bearings might be the cause, in which case you should contact Busch for machine repair.

Summary

Safety

Product Description

2.6 Safety concept

Outlines the safety concept based on preventing sparks and excessive temperatures.

2.6.1 ATEX Classifications and Associated Accessories

Defines obligatory accessories required for different ATEX classifications.

Installation

5.1 Installation Conditions

Specifies environmental and physical requirements for safe and effective machine installation.

5.2 Connecting Lines; Pipes

Details safety precautions and requirements for connecting suction and discharge lines.

5.4 Filling Oil

Provides guidance on selecting the correct oil type and capacity for the machine.

Commissioning

Maintenance

7.1 Maintenance Schedule

Outlines recommended maintenance tasks and intervals for normal and harsh operating conditions.

Troubleshooting

BUSCH RA 0305 D Specifications

General IconGeneral
Pumping speed50 Hz: 290 m³/h | 60 Hz: 350 m³/h
Ultimate pressure0.1 hPa (mbar)
Motor rating50 Hz: 7.5 kW | 60 Hz: 9.0 kW
Weight330 kg
TypeRotary vane pump
Frequency50 Hz

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