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Preface
1.7
Specialist terms and meaning
Term
Central vacuum unit
Machine
Vacuum pump
Motor
Frequency converter
Control unit
Suction capacity
Final pressure (abs.)
Setpoint pressure
PID control
Operating pressure
Noise emission
1.8
Copyright
Passing on or copying this document, using and providing information on its contents is prohibited unless
expressly permitted. Contraventions will lead to claims for damages.
1.9
Terms of guarantee
The manufacturer's guarantee will no longer apply in the following cases:
• Not intended use
• Non-observance of these instructions and the operating instructions of the frequency converter
• Operation by insufficiently qualified staff
• Using spare parts that have not been approved by Gardner Denver Schopfheim GmbH
• Unauthorised modifications to the machine or the accessories supplied by Gardner Denver Schopfheim
GmbH
6
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www.gd-elmorietschle.com © Gardner Denver Schopfheim GmbH
Prematic AG, Märwilerstrasse 43, 9556 Affeltrangen www.prematic.ch
Explanation
Combination of pump, motor, frequency converter and control unit
(self-controlled system)
Pump and motor combination ready for connection
Machine for creating underpressure (vacuum)
Pump drive motor
The frequency converter allows an infinitely variable control of pumping
speed
The control unit allows the transfer of the speed control to enable the
pump to keep the desired operating pressure. If necessary, with this the
pump can be operated between standstill and a maximum speed.
Vacuum pump volume flow related to the condition in the inlet connection
The maximum vacuum that a pump reaches when the inlet opening is
closed, indicated as absolute pressure
It is the setpoint value for the control unit, the desired operating pressure.
Proportional-Integral-Differential control circuit with feedback which al-
lows continuous control
Vacuum or the inlet pressure range, at which the pump operates in con-
tinuous operation.
The permanent vacuum or inlet pressure is ≥ than the final vacuum and <
than the atmospheric pressure.
Noise emitted at a specific loading state indicated as a numeric value,
sound pressure level dB(A) as per EN ISO 3744.
Tel. 071 918 60 60, Mail: v-g@prematic.ch
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