English (GB)
8
2.10 Dosing chemicals
2.11 Diaphragm breakage
If the diaphragm leaks or is broken, dosing liquid escapes from
the drain opening (H) (fig.
) on the dosing head. Observe section
To avoid any danger resulting from diaphragm breakage, observe
the following:
• Perform regular maintenance.
See section
.
• Never operate the pump with blocked or soiled drain opening.
– If the drain opening is blocked or soiled, proceed as
described in section
• Never attach a hose to the drain opening. If a hose is attached
to the drain opening, it is impossible to recognise escaping
dosing liquid.
• Take suitable precautions to prevent harm to health and
damage to property from escaping dosing liquid.
• Never operate the pump with damaged or loose dosing head
screws.
3. Transport and intermediate storage
3.1 Transport
3.2 Delivery
The DDI 222 dosing pump is delivered in a cardboard box. Place
the pump in the packaging during transport and intermediate
storage.
3.3 Unpacking
Retain the packaging for future storage or return, or dispose of
the packaging in accordance with local regulations.
3.4 Intermediate storage
• Permissible storage temperature: -10 °C to +50 °C.
• Permissible air humidity: max. relative humidity:
92 % (non-condensing).
3.5 Return
Return the pump in its original packaging or equivalent.
The pump must be thoroughly cleaned before it is returned or
stored. It is essential that there are no traces of toxic or
hazardous media remaining on the pump.
Before returning the pump to Grundfos Water Treatment for
service, the
safety declaration
at the end of these instructions
must be filled in by authorised personnel and attached to the
pump in a visible position.
If Grundfos Water Treatment is requested to service the pump, it
must be ensured that the pump is free from substances that can
be injurious to health or toxic. If the pump has been used for such
substances, the pump must be cleaned before it is returned.
If proper cleaning is not possible, all relevant information about
the chemical must be provided.
If the above is not fulfilled, Grundfos Water Treatment can refuse
to accept the pump for service. Possible costs of returning the
pump are paid by the customer.
The safety declaration can be found at the end of these instructions.
Warning
Before switching the supply voltage back on, the
dosing lines must be connected in such a way that
any chemicals in the dosing head cannot spray out
and put people at risk.
The dosing medium is pressurised and can be
harmful to health and the environment.
Warning
When working with chemicals, the accident
prevention regulations applicable at the installation
site should be applied (e.g. wearing protective
clothing).
Observe the chemical manufacturer's safety data
sheets and safety instructions when handling
chemicals!
Warning
The pump must be equipped with a diaphragm
leakage detection when used for crystallising media.
Warning
Danger of explosion, if dosing liquid has entered the
pump housing!
When operating the pump with a damaged
diaphragm, dosing liquid can enter the pump
housing.
In case of diaphragm breakage, immediately
separate the pump from the power supply!
Make sure that the pump cannot be put back into
operation by accident!
Dismantle the dosing head without connecting the
pump to the power supply. Make sure that no dosing
liquid has entered the pump housing. Proceed as
described in section
.
Caution
Do not throw or drop the pump.
Caution
Grundfos accepts no liability for damage caused by
incorrect transportation or missing or unsuitable
packaging of the pump!
Caution
If a pump has been used for a medium which is
injurious to health or toxic, the pump will be classified
as contaminated.
Caution
The replacement of the power supply cable must be
carried out by an authorised Grundfos service
workshop.
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