Laboratory vacuum pump PC 620 select

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Overview

• VACUU·SELECT vacuum controller with graphical user interface for application-based process control
• Predefined applications and an editor for custom sequences
• Designed for laboratory vacuum tasks including most high‑boiling solvents
• Simultaneous operation of two independent vacuum applications with electronic control

Product summary
This chemical vacuum pumping unit provides a compact, ready‑to‑use solution for operating two independent vacuum processes from a single pump. The unit is built on the MD 4C NT three‑stage chemical diaphragm pump and is suitable for applications involving high‑boiling solvents. Each vacuum port includes an electrically actuated solenoid valve for precise electronic vacuum control and a check valve to prevent cross contamination. The integrated VACUU·SELECT controller offers an application‑based GUI with predefined processes, manual set‑point control, an application editor and the ability to run two vacuum sequences independently. The glass inlet separator with protective coating retains particles and droplets. An exhaust vapor condenser enables near‑complete solvent recovery when connected to a chilled water line or recirculating chiller. The unit is supplied fully assembled and ready for use.

Technical data
Max. pumping speed 50 Hz: 3.4 m3/h
Max. pumping speed 60 Hz: 2.2 cfm
Ultimate vacuum: 1.5 mbar / 1.1 torr
Ultimate vacuum with gas ballast: 3 mbar / 2.2 torr
Number of heads: 4
Number of stages: 3
Vacuum controller: VACUU·SELECT
Operating temperature range: 10 °C to 40 °C
Storage temperature range: -10 °C to 60 °C
Max. back pressure (abs.): 1.1 bar
Inlet connection: 2 x hose nozzle DN 8-10 mm
Outlet connection: Hose nozzle DN 8-10 mm
Coolant connection: 2 x hose nozzle DN 6-8 mm
Rated motor power: 0.25 kW
Rated speed (50/60 Hz): 1500 / 1800 min-1
Protection class (IEC 60529): IP 20
Dimensions (L x W x H): 435 x 243 x 457 mm
Weight: 21.7 kg
Noise (sound pressure level) at 50 Hz: 45 dBA
ATEX conformity: II 3/- G Ex h IIC T3 Gc X (internal atmosphere only)
Interfaces: Ethernet (RJ45) Modbus TCP / USB Type A (data transfer, software update) / RS-232 (adapter required)
Items supplied: Pumping unit completely mounted, ready for use, with manual.

Characteristics / technical specifications

• Simultaneous operation of two independent vacuum applications via two vacuum ports with independent solenoid valves
• Electronic vacuum control via VACUU·SELECT with predefined applications and editable process sequences
• Glass inlet separator with protective coating to retain particles and droplets
• Exhaust vapor condenser for high solvent recovery when used with chilled water or recirculating chiller
• Oil‑free, chemically resistant MD 4C NT diaphragm pump base
• Hose connections: inlet/outlet DN 8–10 mm; coolant DN 6–8 mm
• Compact dimensions; delivered fully assembled and ready for operation