en
Commissioning
26
WILO SE 2020-12
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Check that the supply voltage is present and corresponds to that indicated on the
pump’s rating plate.
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Check that the fuel is compatible with the motor in use and that the tank is com-
pletely full (the fuel level in the tank can be seen on the fuel gauge next to the tank).
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Check that the connections to the pipes are made correctly, without connections
between the tank and the motor.
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Ensure that the electric float cable of the tank is correctly connected to the diesel
pump’s switchgear.
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Check motor oil and coolant level
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If the motor is cooled with water via a radiator or heat exchanger, perform the spe-
cific procedures indicated in the operating instructions of the motor.
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For topping up, use the oil and coolant recommended in the diesel motor operating
instructions enclosed with this installation and operating instructions. Follow the
commissioning procedures indicated in the chapter on the diesel pump switchgear.
CAUTION
Material damage due to overheating!
To avoid overheating that could damage the main pumps, always check that the wa-
ter flow through the recirculation circuit meets the requirements of the pump data
sheet. In case of problems with the recirculation circuit, or if the minimum level used
to check the starting and operation of the pumps is not guaranteed, open other cir-
cuits (e.g. flow meter, leak test valve of the shut-off valve, drain valve, etc.).
CAUTION
The diesel motor may start at maximum speed!
Leave the pump running for 20 minutes to check whether the motor speed is com-
patible with the specification on the system’s rating plate.
CAUTION
Material damage due to…
Make sure that none of the following conditions are met. If they are present, stop
the pump immediately and rectify the cause of the malfunction before restarting it
(see also chapter Faults, causes and remedies):
• rotating parts in contact with fixed parts
• unusual vibrations and noises
• loose bolts
• high temperature on the motor housing
• current differences between phases
• leaks from mechanical seal
• vibration, noise and excessive temperatures may be due to misalignment of the
motor/pump coupling
7.3.3
Commissioning of the jockey
pump
Manual start
Follow the commissioning instructions in the section related to the jockey pump
switchgear.
CAUTION
Incorrect volume flow can result in a fault!
Perform flow rate adjustment for the jockey pump using the gate valve at the inlet
to the manifold to ensure that the jockey pump delivers less flow than is required by
a single sprinkler dispenser. For jockey pump settings, see the characteristic curves
for the various pump types shown in the relevant catalogue. If there are problems
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