KAESER CSD 102, Руководство по обслуживанию

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Design and Function
4 --- 24
Fig. 6 Internal heat recovery
1 Plate heat exchanger
4.3 Operating States and Control Modes
4.3.1 Operating states
There are three operating states:
LOAD: the inlet valve is open. The airend delivers compressed air to the system.
The compressor motor runs under full load.
IDLING: The inlet valve is closed. The minimum pressure/check valve shuts off the oil
separator from the air system. The oil separator tank is vented.
A small volume of air circulates through the bleed hole in the inlet valve, through the
airend and back to the inlet valve via the venting valve.
The compressor motor runs without load and draws little current.
STANDSTILL: The inlet valve is closed. The minimum pressure/check valve shuts off
the oil separator from the air system. The oil separator tank is vented.
The compresor motor is stopped.
PARTIAL LOAD (option C1): The proportional controller continuously varies the degree
of opening of the inlet valve, and thereby the delivery rate of the compressor, in re-
sponse and in proportion to the air demand. The airend delivers compressed air to the
system.
The load and power consumption of the drive motor rises and falls with the air de-
mand.
The regulating valve is factory set. Consult with KAESER Service before changing.
4.3.2 Tasks of the controller
Using the selected control mode, the controller switches the compressor between its vari-
ous operational states in order to maintain system pressure between the set minimum and
maximum values.
According to the individual compressed air demand one of the various control modes avail-
able will provide the optimum duty cycle for the machine.
4.3.3 Control Modes
The controller can operate in the following modes:
DUAL
VARIO
QUADRO
DUAL
In the DUAL control mode, the compressor is switched back and forth between full load
and idle to maintain system pressure between the set minimum and maximum values.