Grundfos DMH 25X Manual Del Usuario página 5

Warning
Explosion-proof pumps with diaphragm leakage
detection are fitted with a contact pressure gauge in
explosion-proof version.
The pressure gauge must be earthed.
Connecting the earth cable.
Warning
Before connecting the power supply cable, check
that the rated voltage stated on the pump nameplate
corresponds to the local conditions!
Do not make any changes to the power supply cable
or plug!
Warning
The pump must be connected to an external clearly
labelled mains switch with a minimum contact gap of
3 mm in all poles.
Warning
The specified enclosure class can only be ensured if
the power supply cable is connected with the same
degree of protection.
Start-up/shutdown
Warning
When dosing dangerous media, observe the
corresponding safety precautions!
Wear protective clothing (gloves and goggles) when
working on the dosing head, connections or lines!
Before removing the dosing head, valves and lines,
empty any remaining medium in the dosing head into
a drip tray by carefully unscrewing the suction valve.
The pump housing must only be opened by
personnel authorised by Grundfos!
Repairs must only be carried out by authorised and
qualified personnel!
Warning
Risk of injury caused by squirting oil!
Oil may squirt from the oil deaeration when the pump
is running. Do not completely unscrew the oil
deaeration screw.
Wear protective clothing (gloves and goggles) when
working on the dosing head, connections or lines!
Warning
Always adjust the value with the discharge line
connected and with operating counter-pressure.
Warning
Do not allow any chemicals to leak from the pump.
Collect and dispose of all chemicals correctly!
Maintenance
Warning
When dosing dangerous media, observe the
corresponding safety precautions!
Wear protective clothing (gloves and goggles) when
working on the dosing head, connections or lines!
The pump housing must only be opened by
personnel authorised by Grundfos!
Repairs must only be carried out by authorised and
qualified personnel!
Switch off the pump and disconnect it from the power
supply before carrying out maintenance work and
repairs!
Before removing the dosing head, valves and lines,
empty any remaining medium in the dosing head into
a drip tray by carefully unscrewing the suction valve.
Warning
The dosing diaphragm should be replaced with each
gear oil change.
Fault finding chart
Warning
Actions that are taken to correct faults on the pump
and that are not described in this manual, must only
be carried out by personnel authorised by Grundfos!
Disposal
The crossed-out wheelie bin symbol on a product
means that it must be disposed of separately from
household waste. When a product marked with this
symbol reaches its end of life, take it to a collection
point designated by the local waste disposal
authorities. The separate collection and recycling of such
products will help protect the environment and human health.
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