The stirrer propellers in the preparation chambers are started and
stopped automatically.
CAUTION
Automatic startup
Minor or moderate personal injury
‐
Switch off the main switch before removing the cover
from the inspection opening of a preparation chamber.
‐
Make sure all inspection openings are closed and
locked during operation.
After power failure, the system automatically reverts to the
operating state it was in when the power failure occurred.
Components can start unexpectedly.
CAUTION
Automatic startup
Minor or moderate personal injury
‐
In case of power failure, switch off the main switch
before starting any work on the system.
3. Storage and handling
3.1 Storage
•
Observe the permissible ambient conditions.
•
The storage location must be protected from rain, humidity,
condensation, direct sunlight and dust.
•
The system must be drained completely.
•
The system must be cleaned from dry material and liquid
concentrate.
•
The maximum storage time is 2 years from delivery.
Related information
5.1 Ambient conditions for Polydos 412E systems
3.2 Unpacking
•
Mount as soon as possible after unpacking.
•
Observe the permissible ambient conditions.
•
Do not step on the system. The system is not designed to carry
the weight of a person.
Related information
5.1 Ambient conditions for Polydos 412E systems
3.3 Transport
WARNING
Overhead load
Death or serious personal injury
‐
Do not walk or stand under or close to a suspended
load.
•
The system must only be transported by trained persons.
•
Wear personal protective equipment (helmet, safety shoes,
protective gloves).
•
Observe the permissible ambient conditions.
•
The system must be drained completely.
•
Do not step on the system. The system is not designed to carry
the weight of a person.
•
Use appropriate lifting and transporting devices.
•
Make sure the freight does not sustain any point load during
transport.
•
Avoid strong impact loads.
•
Before lifting check the centre of gravity of the freight.
•
Use all lifting eyes and make sure to distribute the weight
evenly. Keep the direction of the lifting force as vertical as
possible to avoid bending the lifting eyes. Use a traverse for
lifting. The length of the traverse must exceed the distance
between the facing lifting eyes by 100-200 mm.
TM071272
Fig.
Lifting eyes
•
If using forklifts, place the system on an appropriate pallet to
support the system frame.
•
If using forklifts, use forks that are long enough to cover the
entire depth of the freight.
•
Secure the system during transport to prevent it from tilting and
moving.
Related information
5.1 Ambient conditions for Polydos 412E systems
4. Product description
4.1 Intended use
The Polydos 412E is a fully automatic system for the continuous
preparation of polyelectrolyte solution in a defined concentration.
Solutions for further dilution as well as ready-to-use solutions can
be prepared from dry material or from liquid concentrate.
The system is suitable for many applications, such as:
•
Drinking-water treatment
•
Wastewater treatment
•
Sludge treatment
•
Process-water and circulation-water treatment
•
Pulp and paper
•
Power plants.
Improper use
Applications not described in the intended use section are not
permitted. Grundfos accepts no liability for any damage resulting
from improper use.
Unauthorised structural modifications to the system may
result in serious personal injury and damage to
equipment.
Do not dismantle, modify, bridge, remove, bypass or
disable components, including safety equipment.
•
The system must not be used if it is damaged.
•
The system must not be used after improper repair.
•
The system must not be used after unauthorised modification.
•
The system must not be used in potentially explosive areas.
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English (GB)
