Grundfos Fire NKF, Installation And Operating Instructions Manual

Page: 24 / 388

English (GB)
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13. Operation
The most important operating and alarm indications are shown
via indicator lights and/or the display of the controller.
See installation and operating instructions for the controller.
If the controller has outputs for connection to a building
management system, the pump set can be monitored remotely.
To remove any faults, see section
16. Fault finding
.
The following four operating modes are possible:
Automatic operation
Once the pump set has been installed and started up according to
the instructions, no further operation is necessary. The pump set
works automatically and switches itself on as soon as water is
taken from the sprinkler system and the pressure switch thus
detects a pressure drop.
The pump set can only be stopped manually via the controller.
Manual operation
The pump set can also be started and stopped manually for a
functional test, for restarting or after service work.
Emergency operation
If the diesel engine does not start up in automatic operation after
six start attempts, the automatic operation is blocked. It is
possible to start the pump set manually via the controller.
Test run
The function of the pump set must be tested during a test run.
See the standard applying to the pump set.
14. Shutdown
1. Close the isolating valve on the discharge side.
2. Close the isolating valve on the suction side.
3. Switch off the power supply via the controller.
The pump must be drained when stopped for long periods.
Unscrew drain plug E. See fig. 29.
Fit the plug when starting the pump and tighten it to 25 Nm (1/2")
or 30 Nm (3/8").
Fig. 29
Position of drain plug E
The pump must be protected against corrosion as described in
section
5.1.2 Storage
. In addition, give the pump shaft a few
squirts of silicone oil when the coupling is dismantled.
Turn the shaft by hand from time to time to prevent the pump from
seizing up.
Additional procedure for pump set with diesel engine
1. Close the fuel valve on the fuel tank.
2. Disconnect the positive pole first and then the negative pole of
the batteries.
We recommend to drain the fuel into a suitable container.
Note
Observe the safety instructions in section
12. Start-up and its subsections, as well as in the
installation and operating instructions for the
individual components.
Note
See also installation and operating instructions
for the controller and diesel engine.
Note
The pump set will not be shut down in case of
disruptions.
Caution
Do not leave the pump room during manual
operation. Observe all operating and fault
indications as the pump set will not stop
automatically in case of fault (e.g. too high
cooling water temperature or too low oil
pressure).
Note
This function is only available for pump sets with
diesel engine.
Caution
Do not leave the pump room during manual
operation. Observe all operating and fault
indications as the pump set will not stop
automatically in case of fault (e.g. too high
cooling water temperature or too low oil
pressure).
Note
This section applies to complete pump set.
See also installation and operating instructions
for the controller and diesel engine.
Note
Shut down is only possible when the pump is not
running. If the pump is running, stop it via the
controller.
Warning
Make sure that the escaping water does not
cause injury to persons or damage to the
equipment.
TM
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935
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