ALUP Kompressoren SCK 21, Maintenance And Operating Instructions

13

Options

Tropical version (T) *

The tropical version is suitable for installation in ambient temperatures
of up to 45 °C. Please refer to the separate attached sheet

Special voltage / Frequency 60 Hz *

If your compressor is operated with a non-standard 400 V or with a
frequency of 60 Hz, please refer to the separate, attached description.

Direction of rotation control *

The direction of rotation control prevents damage resulting from the
incorrect polarity of the electrical voltage (phase confusion). The
direction of rotation control causes the automatic shut-down of the
compressor.

The controller shuts down the motor if the pressure switch mounted
on the compressor stage trips. Please see the attached circuit dia-
gram for further details.

Additional heating system *

The additional electric heating system is housed in the compressor’s
oil tank. The oil heating system cuts in automatically as soon as the
temperature falls below the factory set nominal temperature in the
oil tank, which is measured by a temperature sensor.

This prevents the condensation of the air’s humidity in the compressed
air. The additional heating system is required on systems that cut in
and out frequently and temporarily and therefore do not reach the
required operating temperature.

Floating error signal *

An error on the compressor can be forwarded by means of a floating
contact. For example the error message can be connected to a central
controller or a contactor. Please see the attached circuit diagram for
details of the connection terminals.

Floating operating signal *

An operating signal showing whether the main compressor motor is
running, can be connected to the central controller, for example, using
a floating contact or can also be used, for example, to control blowers
of refrigeration driers. Please refer to the attached circuit diagram for
connection details.

Remote On/Off *

The compressed can be switched on and off using a floating contact.
Please refer to the attached circuit diagram for further details.

Proportional controller *

The proportional controller makes it possible to adjust the delivery
rate to the actual consumption of compressed air. To achieve this the
air delivery rate is throttle in the intake controller by narrowing the
cross-section.

Soiling indicator, intake filter *

If the intake filter becomes soiled this is shown on the display. The
filter element must then be replaced. The filter soiling is measured by
a differential pressure sensor over the intake filter.

Soiling indicator, oil filter *

If the oil filter becomes soiled this is shown on the display. The oil
filter cartridge must then be replaced. The filter soiling is measured by
a differential pressure sensor over the oil filter.

Soiling indicator, oil separator cartridge *

If the oil separator becomes soiled, this is shown by the controller on
the display. The oil separator cartridge must then be replaced. The
fine separator soiling is measured by a differential pressure sensor
over the oil filter.

Heat recovery system *

If you system is fitted with a heat recovery system or is prepared for a
heat recovery system, please refer to the separate attached description.

* The above options are not included in the standard version. These
instructions must only be observed if your compressor is fitted with
the appropriate option.