BUSCH COBRA NC 2000 B VR User Manual

BUSCH COBRA NC 2000 B VR

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Ateliers Busch S.A.

Zone industrielle, 2906 Chevenez

Switzerland

VACUUM APP

Get technical data,

instruction manuals,

service kits

2020.0

4.06 0870549537/A0004_en / Original instructions / Modications reserved

Dry Screw Vacuum Pumps

NC 2000 B VR (Vapour Recovery)

COBRA

Instruction Manual

Table of Contents

Questions and Answers:

L
Lindsay SantanaAug 6, 2025
Why is my BUSCH COBRA NC 2000 B VR not starting?
- D
  Deborah SheltonAug 6, 2025
  There are several reasons why your BUSCH Water Pump might not be starting: * The motor may not be getting the correct voltage, so check the power supply. * The rotors might be jammed or seized. In this case, repair the machine (contact Busch). * Solid foreign matter may have entered the machine. Remove the solid foreign matter or repair the machine (contact Busch). Consider installing an inlet filter if necessary. * The motor itself could be defective, requiring a replacement.
B
Beth WagnerAug 12, 2025
What to do if my BUSCH Water Pump runs too hot?
- C
  chelsea80Aug 12, 2025
  If your BUSCH Water Pump is running too hot, consider the following: * Ensure sufficient cooling by complying with the cooling liquid requirements. * Check that the ambient temperature is not too high, and observe the permitted ambient temperature. * Verify that the temperature of the process gases at the inlet is within the permitted range. * Check the oil level and top up if it is too low.
M
Matthew CarterAug 17, 2025
Why is my BUSCH Water Pump not reaching usual pressure?
- R
  Raymond DurhamAug 17, 2025
  If your BUSCH Water Pump isn't reaching the usual pressure on the suction connection, it could be due to: * Suction or discharge lines being too long or having too small a section diameter. Use larger diameter or shorter lines. Seek advice from your local Busch representative. * Process deposits on the pumping components. Try flushing the machine. * A partially clogged inlet screen or filter. Clean the inlet screen or replace the inlet filter cartridge. * The machine running in the wrong direction. Check the direction of rotation. * Worn or damaged internal parts. Repair the machine (contact Busch).
T
Thomas WallerAug 25, 2025
How to fix a noisy BUSCH COBRA NC 2000 B VR?
- B
  Brenda GriffinAug 25, 2025
  If your BUSCH Water Pump is running very noisily, it might be due to: * Wrong oil quantity or unsuitable oil type. Use one of the recommended oils in the correct quantity. * Defective gears, bearings or coupling element. Repair machine (contact Busch).
S
Samuel MooreAug 30, 2025
What causes black oil in my BUSCH COBRA NC 2000 B VR Water Pump?
- K
  karengravesAug 30, 2025
  Black oil in your BUSCH Water Pump can be caused by: * Oil change intervals being too long. Drain the old oil and fill with new oil. * The machine running too hot. See the troubleshooting steps for 'The machine runs too hot'.

BUSCH COBRA NC 2000 B VR Specifications

General

Brand	BUSCH
Model	COBRA NC 2000 B VR
Category	Water Pump
Language	English

Summary

1 Safety

2 Product Description

2.1 Operating Principle

Explains the one-stage, twin-screw pump mechanism and compression process.

2.2 Application

Details suitable gas types, ultimate pressure capabilities, and continuous operation suitability.

2.3 Start Controls

Notes that start controls are not included and must be provided externally.

2.4 Standard Features

Covers inherent features like cooling and sealing systems.

2.5 Optional Accessories

Lists optional components, focusing on resistance thermometers.

3 Transport

4 Storage

5 Installation

5.1 Installation Conditions

Specifies the required ambient and environmental conditions for proper installation.

5.2 Connecting Lines / Pipes

Guides on connecting suction, discharge, and cooling lines without causing stress.

5.2.1 Suction Connection

Details connection size and safety precautions for the suction inlet, including filtration.

5.2.2 Discharge Connection

Specifies connection size and guidelines for the discharge outlet, ensuring unobstructed flow.

6 Commissioning

6.1 Start-Up

Details the step-by-step process for safely starting the machine, including checks and adjustments.

6.2 Switch Off

Describes the correct procedure for shutting down the machine, including venting and closing lines.

6.3 Restart Procedure

Explains the steps required to restart the system after an emergency stop or shutdown.

7 Maintenance

7.1 Maintenance Schedule

Outlines recommended maintenance intervals and specific tasks for monthly and yearly checks.

7.2 Oil Level Inspection

Details how to check the oil level in the sight glasses on both sides of the machine.

8 Overhaul

9 Decommissioning

10 Spare Parts

11 Troubleshooting

12 Technical Data

14 EU Declaration of Conformity

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