Grundfos 99844392, Инструкция по установке и эксплуатации

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The user interface of the EPC 300 control unit (D) shows the
following signal lights and operating buttons:
Manual START button
Manual STOP button
TEST LEDs button
When pressed, all the LEDs light up and a dedicated
signalling output is activated.
P1 and P2 buttons
For starting the test of the independent pressure
switches
Additionally, the control unit also shows the following signals:
•
power not available or wrong sequence phase connection, LED
• pump on demand, LED
• pump running, LED
• no voltage to the motor (permanently-on light), automatic
operating mode disabled (flashing light), LED
• start failure, LED.
9.1.2.1 Manual operating mode of electric pump
1. Set the key selector to TEST.
2. Start the motor by pressing the manual START button.
3. Perform the necessary tests.
4. Stop the motor by pressing the manual STOP button.
Related information
9.2 Operating modes
9.1.2.2 Automatic operating mode of electric pump
1. Set the key selector to AUT.
If the pressure of the firefighting system decreases below the set
threshold, the pressure switches provide the input for starting the
pump. The pump can be stopped by positioning the key
selector to TEST and pressing the manual STOP button.
Related information
9.2 Operating modes
9.1.2.3 Testing the pressure switches for electric pump
Two pressure switches for each main pump are required on the fire-
fighting main pump sets, as specified in the EN 12845 standard.
The operation of every single pressure switch must be checked
regularly, and for this reason the control panels are equipped with a
device that allows the check of the proper operation for every single
pressure switch.
1. Set the key selector on TEST.
2. Press button P1.
3. Open the valve in order to make the system pressure
drop down.
• The panel will start the pump through P1 (pressure switch 1).
4. Close the water valve, and wait for the system to
reach the nominal pressure.
5. Switch off the pump by pressing the STOP button.
6. Press button P2, and repeat the above procedures to verify the
correct operation of pressure switch 2.
Related information
10.2.6 Checking the performance of the pump set
9.1.2.4 Testing the light signal
1. Press the LEDS TEST button.
• All the warning lights will light up, showing their correct
operation.
Related information
10.2.6 Checking the performance of the pump set
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