Rotary evaporator vacuum system MD 4C EX

laboratorydiaphragmmulti-stage

Overview

• outstanding chemical resistance and superior vapor tolerance
• flame-proof motor with integrated self-locking overload and excess-temperature protection for direct 230 V / 50 Hz single-phase supply (no additional overcurrent device required)
• overpressure safety relief valves internally and at outlet
• safety diaphragm technology with option for inert gas purge and diaphragm-breakage detection
• inlet separator AK and emission condenser EK for pump protection and solvent recovery

Chemistry vacuum system in action
ATEX chemistry vacuum systems are supplied ready to connect and are configured for applications with large amounts of condensable vapors. Typical uses include rotary evaporators and vacuum drying ovens in potentially explosive atmospheres. The inlet separator (AK) retains particles and liquid droplets to protect the pump. The emission condenser (EK) on the outlet is compact and highly efficient, enabling near-100% solvent recovery. A separate gas-ballast connection is included for use with inert purge gas.

Technical data and graphs (summary)
Max. pumping speed 50 Hz: 3.7 m3/h
Ultimate vacuum: 3 mbar / 2.3 torr
Ultimate vacuum with gas ballast: 10 mbar / 7.5 torr
Number of heads: 4
Number of stages: 3
Lower ambient temperature (operation): 10 °C
Upper ambient temperature (operation): 40 °C
Lower ambient temperature (storage): -10 °C
Upper ambient temperature (storage): 60 °C
Max. back pressure (abs.): 1.1 bar
Inlet connection: small flange KF DN 25
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 motor speed at 50/60 Hz: 1500 min-1
Protection class IEC 60529: IP 54
Dimensions (L x W x H): 600 mm x 365 mm x 420 mm
Weight: 37.4 kg
Noise (sound pressure level) at 50 Hz: 53 dBA
ATEX conformity: Pumping chamber (pumped gases): II 2G Ex h IIC T3 Gb X; Environment with inert purge gas: II 2G Ex h IIB T4 Gb X; Environment without inert purge gas: II 3G Ex h IIB T4 Gc X; Motor: II 2G Ex db IIB T4 Gb

Characteristics / technical specifications

• Model: MD 4C EX +AK+EK (chemistry vacuum system with AK inlet separator and EK emission condenser)
• Ultimate vacuum (no gas ballast): 3 mbar (2.3 torr)
• Ultimate vacuum (with gas ballast): 10 mbar (7.5 torr)
• Max. pumping speed (50 Hz): 3.7 m3/h
• Heads / stages: 4 heads, 3 stages
• Connections: Inlet KF DN 25; outlet hose nozzle DN 8-10 mm; coolant 2x DN 6-8 mm
• Rated motor power / speed: 0.25 kW / 1500 min-1 (50 Hz)
• Protection class: IP 54
• Operating temperature range: 10 °C to 40 °C; Storage: -10 °C to 60 °C
• Max. back pressure (abs.): 1.1 bar
• Dimensions (L x W x H): 600 x 365 x 420 mm; Weight: 37.4 kg
• Noise level (50 Hz): 53 dBA
• Items supplied: Pumping unit fully assembled with inlet separator AK and emission condenser EK, manual, 10 m cable without plug (glass-part shock protection by customer)