Pressure restriction
The maximum working pressure must not exceed the value in the approved performance
curve for the pump. A closed valve or a clogged pipe can rapidly build up the pressure. A
motor protector or a relief valve on the discharge line is always recommended.
NOTICE:
Never operate the pump with the discharge line blocked, or the discharge valve closed.
Fasteners
• Only use fasteners of the correct size and material.
• Replace all corroded or damaged fasteners.
• Make sure that all the fasteners are correctly tightened and that there are no missing
fasteners.
4.1.2 Install the pump
These requirements and instructions only apply when the installation is made according
to the dimensional drawing.
1. Run the cable so that it has no sharp bends. Make sure that it is not pinched, and
cannot be sucked into the pump inlet.
2. Install the pump according to the instructions for the installation type.
Where applicable, the installation instructions are included in the mechanical
accessories.
3. Connect the motor cable and the starter and monitoring equipment according to the
separate instructions.
4.1.2.1 F-installation
F Free standing semipermanent, wet well arrangement where the pump is placed on a
firm surface.
The pump is intended to operate completely or partially submerged in the pumped
liquid.
4 Installation
18 Flygt 3069 Installation, Operation, and Maintenance Manual
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