Grundfos DMX 221 Manual Del Usuario página 5

English (GB) Safety instructions
Original safety instructions
These safety instructions give a quick overview of the
safety precautions to be taken in connection with any
work on this product. Observe these safety
instructions during handling, installation, operation,
maintenance, service and repair of this product.
These safety instructions are a supplementary
document, and all safety instructions will appear
again in the relevant sections of the installation and
operating instructions. Keep these safety instructions
at the installation site for future reference.
Installation requirements
WARNING
Chemical hazard
Death or serious personal injury
‐
Observe the material safety data sheet
of the dosing medium.
‐
Collect and dispose of all chemicals in
a way that is not harmful to persons or
the environment.
Design your dosing system with monitoring and
control functions to safeguard the entire system.
Dosing head connections
WARNING
Chemical hazard
Death or serious personal injury
‐
For pumps with an integral relief valve,
connect an overflow line to C.
Safety instructions and requirements for
electrical connection
DANGER
Electric shock
Death or serious personal injury
‐
All electrical connections must be
carried out by qualified persons.
‐
Do not open the pump housing.
‐
Switch off the power supply before
making any electrical connections.
WARNING
Chemical hazard
Death or serious personal injury
‐
Make sure the pump has been
correctly installed and is ready to be
started before you switch on the power
supply.
Safety instructions and requirements for startup
WARNING
Chemical hazard
Death or serious personal injury
‐
Observe the material safety data sheet
of the dosing medium.
‐
Wear protective clothing when working
on the dosing head, connections or
lines.
‐
Collect and dispose of all chemicals in
a way that is not harmful to persons or
the environment.
‐
Make sure the pump has been
correctly installed and is ready to be
started before you switch on the power
supply.
WARNING
Chemical hazard
Death or serious personal injury
‐
Tighten the dosing head screws after
initial startup and every time the dosing
head has been opened. After 6-10
operating hours or two days, retighten
the dosing head screws using a torque
wrench.
• The vent plug must be open while the pump is
running.
• Only adjust the stroke length while the pump is
running.
Deaerating the pump during operation
WARNING
Chemical hazard
Death or serious personal injury
‐
Wear protective clothing when working
on the dosing head, connections or
lines.
‐
Before relieving the pressure from the
outlet side, make sure escaping dosing
medium cannot cause any harm to
persons or equipment.
‐
Collect and dispose of all chemicals in
a way that is not harmful to persons or
the environment.
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