安全指导 - Grundfos DMX 221 Manual Del Usuario

Adjusting the zero point
Opening and reactivating the integral relief valve
WARNING
Chemical hazard
Death or serious personal injury
‐
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.
Setting the opening pressure of the integral relief
valve
WARNING
Chemical hazard
Death or serious personal injury
‐
Do not set the opening pressure higher
than the maximum counterpressure of
the pump.
‐
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.
Safety of the system in case of a failure in the
dosing pump
WARNING
Chemical hazard
Death or serious personal injury
‐
Check on a monthly basis that dosing
medium is not leaking out of the pump.
• In case of a diaphragm leakage, dosing medium
may leak out of the hole in the intermediate
flange between the pump and the dosing head.
The parts inside the housing are protected from
the dosing medium for a short time (depending
on the type of medium) by the housing sealing.
• Check monthly if medium is leaking out of the
intermediate flange. In case of a diaphragm
leakage, immediately stop the operation of the
pump and close the isolating valves on the inlet
side and outlet side.
• For maximum safety, we recommend the pump
version with diaphragm leakage sensor.
6
Taking the product out of operation
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.
‐
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.
DANGER
Electric shock
Death or serious personal injury
‐
Electrical disconnection must be
carried out by qualified persons.
‐
Do not open the pump housing.
‐
Switch off the power supply before
making any electrical connections.
Safety instructions for maintaining the dosing
diaphragm or the valves
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.
‐
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.
DANGER
Electric shock
Death or serious personal injury
‐
Only qualified persons are allowed to
service the pump.
‐
Do not open the pump housing.