Electrical Connection; Start-Up; Operation; Automatic Operation - Grundfos Fire NKF Montage- Und Betriebsanleitung

Aligning pump and engine
1. Unscrew axial and radial bolts from the coupling and push
shaft sleeve on the shaft in the direction of the pump.
2. Loosen the screws of the pump base.
3. Insert shims or foil sheets under the pump base.
4. Retighten the screws of the pump base.
5. Push shaft sleeve on the shaft in the direction of the engine
and refasten axial and radial bolts. Always insert the axial
bolts first. Bolts can be re-used a maximum of 3 times.
After that use new self-securing bolts. The bolts must never be
fastened with threadlocker, as this can damage the rubber
compound.
6. Re-check the alignment.
Fig. 23 Axial and radial fixation of the shaft sleeve

5.2 Electrical connection

Warning
Before starting, check that the voltage specified
on the nameplate of the control cabinet
corresponds to the available mains voltage.
The electrical connection should only be carried
out by qualified personnel in accordance with
local specifications and regulations.
• The connection to the mains supply must be fitted with a fuse
of the correct size, in accordance with the regional regulations,
and connected to the terminal block X1, terminals 1, 2 and 3 in
the control cabinet. See wiring diagram.
• Connect both external pressure switches to the terminal block
X11, terminals 3 and 4 and terminals 5 and 6 (see wiring
diagram) in the control cabinet.
• Two blind motors can be connected to terminal block X4,
terminals 5 to 7 and terminals 8 to 9 in the control cabinet.
(See wiring diagram).
• For remote monitoring, specific signals can be channelled
through terminal block X16.

6. Start-up

Warning
Start-up may only be carried out by authorised
and qualified personnel.
The control cabinet of the controller must remain
closed during start-up. Danger of electric shock!
Procedure:
1. Check oil level. See 9.3.1 Oil level.
2. Check cooling liquid level. See 9.3.2 Cooling system.
To prevent damage to the engine, it is essential
to check the levels of oil and cooling liquid in the
engine prior to start-up. If the oil level is too low,
Caution
refill with oil. If the level of cooling liquid is too
low, refill with cooling liquid. See section
9.3 Routine engine checks.
3. Check V-belt tension. See section 9.3.6 V-belt.
4. Fill the fuel tank with diesel. See section 9.3.3 Fuel system.
5. Set the pressure values on the pressure switches.
See operating instructions of the pressure switch. The "system
pressure - 0.5 bar" can be used as a standard value for
settings.
6. Switch on the pump unit by switching the fuses F1, F4, F5, F8,
F9, F6 and F7 in the control cabinet (fig. 5 or fig. 7, pos. 26)
(position ON). Wait until the PLC is running and the indicator
light H4 "Processor on" is flashing.
7. Open the fuel tap (fig. 5 or fig. 7, pos. 7).
8. Open the isolating valve on the suction side of the pump.
Close the isolating valve on the discharge side of the pump.
Open the isolating valve to the test pipe.
9. Start the pump manually. See section 7.2 Manual operation.
If the engine does not start, check the error
messages and instructions on the display.
Note
Other causes, see section 10. Fault finding chart.
10.Slowly open the isolating valve on the discharge side.
11.When the pump reaches operating pressure, open the
isolating valve sufficiently to reach the duty point.
12.Compare the oil pressure, temperature and speed with the
nominal values. See section 4.4.3 Engine.
13.Stop the pump manually. See section 7.2 Manual operation.
The pump unit is now operational and in automatic mode.
In connection with the start-up, a final test run must be carried
out, according to VdS. To do this, activate the automatic start-up
command by lowering the pressure in the discharge pipe with a
closed fuel tap. Every starting cycle consists of a 15-second
starting phase followed by a 15-second pause. After six failed
start attempts, a start failure warning must be activated. When
the fuel tap has been opened and the fault indication has been
removed by pressing the button S4, the pump should start
properly.

7. Operation

7.1 Automatic operation

Once the pump unit has been installed and started up according
to the instructions, no further preparation is necessary. The pump
unit works automatically and switches itself on according to use,
as soon as water is taken from the sprinkler system and the
pressure switch therefore detects a pressure drop.
The unit can be switched off via button S3. Emergency shut-down
is possible by pulling the STOP-lever on the injection pump.
See fig. 24. Alternatively, close the fuel tap on the tank.
See fig. 5 or fig. 7, pos. 7.
Fig. 24 Emergency shut-down
If the controller outputs of the pump unit are connected to a
building management system, the operation can be monitored
remotely.
If started up due to a false alarm, the pump should not operate for
more than 48 hours. If the pump has run for more than 48 hours
after a false alarm, always dismantle the pump and inspect it for
signs of wear or damage. If necessary, replace any defective
components.
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