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BUSCH RA 0255 D - User Manual

BUSCH RA 0255 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

  • J
    Jane JacksonSep 23, 2025
    What causes a BUSCH RA 0255 D Water Pump to fume or expel oil?
    • A
      Amanda CampbellSep 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.
  • R
    Richard KingAug 23, 2025
    Why is the oil in my BUSCH RA 0255 D emulsified?
    • N
      Nathaniel FrankAug 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.
  • V
    Vincent BatesAug 25, 2025
    Why BUSCH RA 0255 D Water Pump fumes or expels oil?
    • D
      david16Aug 25, 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.
  • M
    martinezadamAug 26, 2025
    Why BUSCH RA 0255 D has abnormal oil consumption?
    • L
      Lauren HamptonAug 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).
  • C
    Christopher LutzAug 27, 2025
    What does it mean if the oil in my BUSCH Water Pump is emulsified?
    • O
      owoodAug 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.
  • Y
    ydiazSep 16, 2025
    What to do if BUSCH Water Pump doesn't reach usual pressure?
    • K
      kristinabaileySep 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.
  • S
    Steven GraySep 13, 2025
    Why BUSCH RA 0255 D does not start?
    • S
      Steven MartinSep 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).
  • D
    Desiree TownsendSep 14, 2025
    What to do if BUSCH RA 0255 D Water Pump runs too hot?
    • T
      Travis NorrisSep 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).
  • B
    brenda94Sep 5, 2025
    Why my BUSCH RA 0255 D Water Pump does not start?
    • A
      angela10Sep 5, 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).
  • L
    Lori KennedySep 3, 2025
    Why is my BUSCH Water Pump running very noisily?
    • A
      Angela YoungSep 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

2.5 Explanation of ATEX Classification

Details ATEX marking components and their meaning for explosive atmospheres.

2.6 Safety concept

Outlines the safety strategy focusing on preventing sparks and excessive temperatures.

2.6.1 ATEX Classifications and Associated Accessories

Defines required accessories based on specific ATEX classification types.

Installation

5.1 Installation Conditions

Specifies environmental and physical requirements for safe machine installation.

5.6 Electrical Connection

Covers electrical installation, safety, and connection of the motor.

5.7 Electrical Connection of the Monitoring Devices

Explains the connection of monitoring sensors like temperature and pressure switches.

Commissioning

Maintenance

Overhaul

Decommissioning

Troubleshooting

Technical Data

Oil

BUSCH RA 0255 D Specifications

General IconGeneral
BrandBUSCH
ModelRA 0255 D
CategoryWater Pump
LanguageEnglish

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