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4. Mounting, installation and connection
4.1 Inspection before pump
installation
4.1.1 Check for free rotation of the impeller
Check the failure-free impeller running in this way:
1. Remove fan cover of motor.
2. Consider direction of rotation (arrow).
3. Rotate shaft slowly by hand via the fan.
The shaft must rotate easily. If the impeller rubs against the
pump casing (for example due to transport damage) it has
been damaged.
When the impeller rubs against the casing: Contact
Grundfos Service.
When the impeller runs failure free:
4. Re-fit fan cover of the motor.
4.2 Installation in the pipeline
W A R N I N G
!
Mechanical overload!
S
Death, bodily injury or damage to property.
Z
Do not use the pump or its connecting sleeves to support
the pipeline.
Z
In addition to the general rules of machine-building and
plant construction, also follow the instructions provided by
the manufacturer of the connecting elements used (e.g.,
flanges) when installing the pump in the pipeline or plant.
These specifications will contain data on torques,
maximum allowable angular offset and tools / auxiliary
materials to be used.
Z
It is absolutely necessary to avoid twisting the pump.
C A U T I O N
!
Mechanical overload due to foreign objects!
S
Damage to property.
Z
The suction and discharge ports are protected with plastic
sheets and the flushing and drain lines with plastic caps.
These must be removed before the pump is installed in
the system.
Overview
This section describes how to mount, adjust and install the pump.Consideration for connecting the pump to the
electric mains supply and how to improve the flow in order to avoid dry running of the shaft seals are described.
