Overview

The document is a technical data sheet for the G-BH series side channel blowers, specifically model 2BH1 640, published in August 2013. These pumps can operate continuously as both vacuum pumps and compressors across their full performance range.

Specifications

• Operation Modes: Vacuum and compressor operation.
• Performance Conditions: Based on air at 15 °C and atmospheric pressure of 1013 mbar ±10%, with suction and ambient temperatures up to 25 °C.
• Motors: Standard motors have IP55 protection and insulation class F. Motors are UL and CSA approved.
• Voltage and Frequency: Motors available for various mains voltages and frequencies (50 Hz and 60 Hz), with tolerances of ±2% frequency, ±10% voltage for fixed voltage motors, and ±5% for voltage range motors. Single-phase machines have ±5% voltage tolerance.
• Power Ratings: Motor power ranges from approximately 4.0 kW to 13.6 kW depending on model and voltage.
• Sound Pressure Level: Measured according to EN ISO 3744 at 1 m distance, typical levels range around 74 to 90 dB(A), with a tolerance of ±3 dB(A).
• Compliance: Conforms to EU directives 2006/42/EC (Machinery) and 2006/95/EC (Low Voltage), and EN 60034-1 standards for rotating electrical machines.

Performance Curves and Parameters

The data sheet includes performance curves showing total pressure difference (mbar) versus suction capacity (m³/h) for both vacuum and compressor modes at 50 Hz and 60 Hz. Key points include:

• Maximum differential pressure up to approximately 750 mbar.
• Suction capacities up to around 400 m³/h.
• Temperature rise of conveyed air is indicated but specific values depend on operating conditions.

Ordering and Selection Data

• Various motor types and voltages are available to match customer requirements.
• Relief valves can be supplied to limit differential pressure.
• Performance may vary if IE2 motors are used; refer to specific data sheets for those variants.

Installation and Operation Notes

• The pumps are suitable for continuous operation over the entire performance curve.
• Frequency converter operation is supported with motor insulation suitable for converter input voltages up to 460 V.
• Changes to performance data and weights may occur without prior notice.

Manufacturer Information

Gardner Denver Deutschland GmbH, with contact details and website provided. The Elmo Rietschle brand is noted as the source for vacuum and pressure solutions.