Persons must not work in the installation
area when the atmosphere is explosive.
DANGER
Electric shock
Death or serious personal injury
‐ It must be possible to lock the main
switch in position 0. Type and
requirements as specified in EN
60204-1.
DANGER
Electric shock
Death or serious personal injury
‐ Make sure there is at least 3 m free
cable above the maximum liquid level.
Make all maintenance and service work
when the pump is placed outside the pit.
4.1 Mechanical installation
Make sure the pit bottom is even before
installing the product.
DANGER
Electric shock
Death or serious personal injury
‐ Switch off the power supply and lock
the main switch in position 0.
‐ Switch off any external voltage
connected to the product before
working on it.
CAUTION
Hot surface
Minor or moderate personal injury
‐ Make sure that the pump has cooled
down before touching it.
DANGER
Electric shock
Death or serious personal injury
‐ Before installing the pump and starting
it up for the first time, check the power
cable for visible defects to avoid short
circuits.
CAUTION
Biological hazard
Minor or moderate personal injury
‐ Flush the pump thoroughly with clean
water and rinse the pump parts after
dismantling. Pits may contain sewage
or wastewater with toxic and/or
contagious substances.
‐ Wear appropriate personal protective
equipment and clothing.
‐ Observe the local hygiene regulations
in force.
Fit the extra nameplate supplied with the pump at the
installation site or keep it in the cover of this manual.
Observe all safety regulations at the installation site.
Check the oil level in the oil chamber before installing
the pump.
The pumps are suitable for different installation types.
The pump must be installed in a vertical
position, in both auto-coupling or free-
standing submerged installation.
SEG.50 (high-flow) pumps have a cast DN 50 outlet
flange. All other pumps have a cast DN 40 outlet
flange.
The pumps are designed for intermittent
operation. When completely submerged in
the pumped liquid, the pumps can also
operate continuously (S1).
Always use Grundfos accessories to avoid
malfunctions due to incorrect installation.
Only use the lifting bracket for lifting the
pump. Do not use it to hold the pump
during operation.
CAUTION
Crushing hazard
Minor or moderate personal injury
‐ Do not put your hands or any tool into
the pump inlet or outlet port after the
pump is connected to the power supply
unless it is switched off by removing
the fuses or switching off the main
switch.
‐ Make sure that the power supply
cannot be switched on unintentionally.
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