Novatek-electro MCK-108, Operating Manual

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MCK-108 NOVATEK-ELECTRO
In the automated drainage mode , if the emergency level has been reached, the electric motors of the pumps
are activated simultaneously.
3.2.3 Emergency conditions
3.2.3.1 Protection of the pump electric motor from the inadmissibly low liquid level in the well
Protection works if the DR sensor is activated.
If the liquid level in the well falls lower than the DR sensor:
- the pump electric motor is deactivated;
- the LED
DR starts to glow red;
- the functional relay activates the alarm (at operation with one electric motor).
If the liquid level reaches the
DR sensor and the AR time elapses, the pump electric motor will be activated.
If the DR sensor is off, the LED DR goes out.
3.2.3.2 Emergency shutdown of the pump electric motor on tripping of the EL emergency level sensor.
If the EL sensor is activated, on the liquid level reaching the EL sensor:
- in the automated filling mode the work of the pump electric motor is forbidden (when working with two
pumps the work of both pumps electric motors is forbidden);
- in the automated drainage mode the pump electric motor is activated (when working with two pumps the
work of both pumps electric motors is allowed) ;
- the LED EL starts to glow red;
- when working with one pump electric motor, the functional relay activates the alarm.
If the liquid level falls lower than the
EL sensor:
- the pump electric motor is activated (when working with two pumps the work of both pumps electric motors is
allowed);
- the LED EL goes out;
- the functional relay deactivates the alarm.
If the
EL sensor is off, the LED EL goes out.
3.2.3.3 Failures of the (pressure) level sensors are specified in Table 4
Table 4
Name of Failure Cause Indication
Failure of the lower level
sensor (
LL )
If the UL or EL sensor has tripped (except for
the operation mode with the pressure sensor),
the
LL sensor shall indicate the absence of
liquid.
Or if the
UL or EL sensor has tripped (in the
operation mode with the pressure sensor), the
LL sensor shall indicate a closed condition.
The LED LL blinks red
Failure of the upper level
sensor (
UL )
If the EL sensor has tripped, the UL sensor
shall indicate the absence of liquid.
The LED UL blinks red
At failure of the UL sensor, MCK-108 will continue operating, using the emergency level sensor as an UL
sensor.
3.2.3.4 EEPROM Failure
When EEPROM failure, calibration of resistance of liquid off and MCK-108 is locked, giving the following error
message
– in turn and with 1 Hz frequency
EL , UL , LL , DR LEDs starts to glow and upside-down. Then the cycle is
repeated.
ATTENTION! In case of EEPROM failure the MCK-108 needs to be laid off and sent for repair.
3 MAINTENANCE
3.1 SAFETY PRECAUTIONS
THE TERMINALS AND THE PRODUCT INTERNAL ELEMENTS CONTAINS POTENTIALLY LETHAL
VOLTAGE.
DURING MAINTENANCE IT IS NECESSARY TO DISABLE THE PRODUCT AND CONNECTED
DEVICES FROM THE MAINS.
3.2 Maintenance of the product must be performed by qualified service personnel.
3.3. Recommended frequency of maintenance is every six months.
3.4. MAINTENANCE PROCEDURE :
1) Check the connection reliability of the wires, if necessary, clamp with the force specified in Table 1;