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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

Table of Contents

Other manuals for BUSCH RA 0305 D

Preview: Installation And Operating Instructions
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Preview: Instruction Manual Supplement
Instruction Manual Supplement12 pages

Questions and Answers

  • M
    Megan LiuSep 8, 2025
    Why BUSCH RA 0305 D does not reach the usual pressure?
    • I
      ikiddSep 8, 2025
      If your BUSCH Water Pump isn't reaching the usual pressure on the suction connection, check these potential causes: The oil level might be too low, so top up the oil. The inlet screen (IS) could be partially clogged, so clean the inlet screen (IS). If your pump has an inlet filter cartridge (optional), it might be clogged, so replace the inlet filter cartridge. If none of these resolve the issue, internal parts may be worn or damaged, so repair the machine or contact Busch.
  • J
    Jessica Martinez DDSSep 7, 2025
    What to do if my BUSCH RA 0305 D runs too hot?
    • C
      Candice SalazarSep 7, 2025
      If your BUSCH Water Pump is running too hot, several factors could be the cause. Insufficient cooling may be the issue, so remove any dust and dirt from the machine. Also, the ambient temperature might be too high, so observe the permitted ambient temperature. Low oil level can also cause overheating, so top up the oil. Lastly, partially clogged exhaust filters (EF) could be the problem, in which case replace the exhaust filters (EF).
  • M
    Mr. Richard SullivanAug 22, 2025
    Why is the oil in my BUSCH RA 0305 D black?
    • S
      Sonya PerezAug 22, 2025
      If the oil in your BUSCH Water Pump is black, it could be due to oil change intervals being too long, in which case you should contact Busch to flush the machine. Another possibility is a defective inlet filter (optional), which should be replaced. Also, check if the machine is running too hot.
  • A
    Amy FarleySep 4, 2025
    Why does my BUSCH Water Pump emit fumes or oil droplets?
    • T
      tayloraprilSep 4, 2025
      If your BUSCH Water Pump is emitting fumes or oil droplets through the gas discharge, it could be because the exhaust filters (EF) are partially clogged and need replacement. Also, ensure that the exhaust filter (EF) with o-ring is correctly positioned. If the problem persists, the float valve (FV) might not be working correctly; in this case, check the float valve and the oil return line, and contact Busch for repair if necessary.
  • 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.
  • S
    swilliamsSep 2, 2025
    Why is my BUSCH RA 0305 D consuming oil abnormally?
    • F
      Fernando DunnSep 2, 2025
      Abnormal oil consumption in your BUSCH Water Pump can stem from a few causes. Check for oil leaks and consider replacing the seals. A malfunctioning float valve (FV) can also lead to this issue, so inspect the float valve and the oil return line. Finally, ensure the machine isn't running at atmospheric pressure for extended periods; it should operate under vacuum.
  • S
    Sabrina FloresAug 31, 2025
    What to do if my BUSCH RA 0305 D Water Pump does not reach the usual pressure?
    • J
      John HendersonAug 31, 2025
      If your BUSCH Water Pump isn't reaching its usual suction pressure, start by checking the oil level and top it up if it's low. The inlet screen (IS) might be partially clogged, so clean it. If your pump has an optional inlet filter cartridge, it might be clogged and need replacement. If these steps don't resolve the issue, internal parts may be damaged, requiring professional repair by contacting Busch.
  • T
    Terri RiosAug 30, 2025
    Why is my BUSCH RA 0305 D running too hot?
    • R
      Richard LozanoAug 30, 2025
      If your BUSCH Water Pump is running too hot, several factors could be responsible. Insufficient cooling may be the issue, so try removing dust from the machine. Also, check if the ambient temperature is too high and ensure it's within the recommended range. Low oil level can also cause overheating, so top up the oil if necessary. Finally, a partially clogged exhaust filter (EF) can cause the pump to overheat, so replace the exhaust filter (EF).
  • M
    Michael PopeAug 29, 2025
    What to do if my BUSCH RA 0305 D does not start?
    • K
      Kristine RiceAug 29, 2025
      If your BUSCH Water Pump doesn't start, it could be due to several reasons. First, check if the motor is receiving the correct voltage. If the voltage is correct, the motor might be defective and need replacement. Another possible cause is a defective coupling (CPL), which would also require replacement.
  • 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.

Summary

Safety

Product Description

2.5 Explanation of ATEX Classification

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.

5.3 Earth Connection

5.4 Filling Oil

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

5.6 Electrical Connection

5.6.1 Wiring Diagram Three-Phase Motor

5.7 Electrical Connection of the Monitoring Devices

5.8 Flowchart

Commissioning

Maintenance

7.1 Maintenance Schedule

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

7.2 Oil Level Inspection

7.3 Oil and Oil Filter Change

7.4 Exhaust Filter Change

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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