PREBENA
Wilfried Bornemann GmbH & Co. KG
BEFESTIGUNGSTECHNIK
– FASTENING TECHNOLOGY
11
7.6
Compressor unit protection devices
The compressor is equipped with the following safety devices and control units that
contribute to the protection and control of the main components and functions. These
are as follows:
1
Safety valve, which is mounted to the compressed air tank (if present).
2
Safety valve, which is mounted to the oil collection tank.
3
Fuses FU 1-FU5 (5.5, 7.5, 22, 30 and 37 - KW) FU 1-FU8 (11 and 15 KW)
(
SeeAppendix E):
for the protection of all control and signal circuits.
4
Circuit breakers, which provides protection against short circuits in the power
supply.
5
Power monitoring, which provides protection against losses and asymmetric
phases, as well as false phase sequences.
6
Temperature relay (on the wiring board) to protect the compressor motor
against overload. The compressor is switched off when the temperature relay
is switched.
7
Programmable controller, which monitors temperature and pressure and
regulates the compressor automatically.
8
In the following cases, switching the compressor normally is not possible and
the electric circuit is separated:
- Voltage recovery after power failure;
-
Increase in oil temperature to above the permissible limit of +100 ° С
- Use of the temperature relay;
- Indication of excess pressure.
DANGER: THE COMPRESSOR WAS STOPPED IN THE CASE OF AN
EMERGENCY (ACTIVATION OF PROTECTION SYSTEM). FIND THE REASON
FOR THE FAILURE BEFORE RESETTING THE COMPRESSOR AND CHECK THE
THE FOLLOWING POINTS:
1 VOLTAGE, CHANGE IN THE THREE PHASES OF THE POWER SUPPLY.
CHECK PHASE VOLTAGE AND CONNECTIONS.
2 IN THE CASE OF ACTIVATED MOTOR THERMAL PROTECTION:
- ALLOW THE THERMAL PROTECTION TO AUTOMATICALLY RESET.
- PRESS THE "RESET" BUTTON.
- SWITCH THE COMPRESSOR ON.
3 IN THE CASE OF ACTIVATED COMPRESSOR THERMAL PROTECTION,
CHECK:
- IF OIL LEVEL AND SPECIFICATIONS ARE CORRECT.
- IF THE FAN / RADIATOR IS CLEAN.
- THE AMBIENT TEMPERATURE.
- THE FILTER LOAD.
-
IF THE TEMPERATURE DROPS TO 97°С, PRESS THE "RESET"
BUTTON AND SWITCH THE COMPRESSOR ON.
Summary of Contents for SK-15-10
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