Dry claw vacuum pumps from Atlas Copco

Atlas Copco offers the DZS 600 VSD+ and DZS 1200 VSD+ dry, oil-free claw pumps, described as powerful, energy-efficient, and cost-saving.

“The DZS VSD+ are simple and modular in design,” said product manager Ahmed Elshaffie. They consist of the pump and gear chambers, which are separated by seals. Their energy-efficient and low-wear operation stems from a special coating on the wetted parts and rotors, combined with a simple operating principle. Two claws rotate without contact in opposite directions in the pump housing. This action draws air into the pump chamber, compresses it and expels it again under pressure. In the gear chamber, two gear wheels synchronize the claw rotation. The non-return valve in the inlet flange prevents air from flowing back into the vacuum chamber when the pump is switched off. The pumps are driven directly by a flange-mounted motor via a coupling.

Little installation space required
With their integrated VSD+ inverter drive with pressure setpoint control, the vacuum pumps can be operated at high rotor speeds. The motor speed adapts to the process load in an energy-efficient manner. “The DZS 600 VSD+ and DZS 1200 VSD+ models can run continuously at their ultimate vacuum level without overheating,” said Elshaffie. Another important advantage is their variable use, as the compact pumps take up very little installation space in rough vacuum applications.

Real-time access to important parameters
Using the Atlas Copco VSD+ app for iOS and Android devices, operators can control and monitor the DZS VSD+ series via their smartphone and thus access relevant parameters in real time at any time.

The same app makes it easier to commission the series by setting the target pressure, start/stop delay and stop level. All users have to do is start the pump, connect the VSD+ app via Bluetooth and enter the desired parameters.

“We have been using the robust, reliable claw technology in vacuum technology and other areas for many years,” says Elshaffie.

With the DZS 600 VSD+ and DZS 1200 VSD+ models, Atlas Copco therefore offers a simple, reliable pump that can support customers in their processes for a long time without interruption.

Key features of the DZS VSD+ models at a glance

_* Vacuum relief valve: Prevents overheating in the ultimate vacuum over a long running time
_* Inlet non-return valve: Isolates the pump from the process when switching off
_* The silencer reduces the noise generated by the pump in the working environment
_* An integrated VSD+ inverter drive regulates the pressure setpoint
_* The PEEKCOAT coating protects process-wetted parts and rotor
_* Control at the touch of a button via the Atlas Copco VSD+ app.