Diaphragm Breakage; Operation With Loose Dosing Head Screws - Grundfos DME Serie Instrucciones De Instalación Y Funcionamiento

1.6 Diaphragm breakage

If the diaphragm leaks or is broken, dosing liquid
escapes from the drain opening (fig. 1) on the dosing
head. Observe section 8.4 Diaphragm
Warning
Danger of explosion, if dosing liquid has
entered the pump housing!
Operation with damaged diaphragm can
lead to dosing liquid entering the pump
housing.
In case of diaphragm breakage,
immediately separate the pump from the
power supply!
Make sure the pump cannot be put back
into operation by accident!
Dismantle the dosing head without
connecting the pump to the power supply
and make sure no dosing liquid has
entered the pump housing. Proceed as
described in section
diaphragm and
To avoid any danger resulting from diaphragm
breakage, observe the following:
• Perform regular maintenance.
See section 8.1 Regular
• Never operate the pump with blocked or soiled
drain opening.
– If the drain opening is blocked or soiled,
proceed as described in section
8.3.2 Dismantling the diaphragm and
• 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.
breakage.
8.3.2 Dismantling the
valves.
maintenance.
valves.
1.7 Operation with loose dosing head
screws
Warning
Danger of explosion, if dosing liquid has
entered the pump housing!
Operation with damaged or loose dosing
head screws can lead to dosing liquid
entering the pump housing.
If the pump was operated with damaged or
loose dosing head screws, immediately
separate the pump from the power supply!
Make sure the pump cannot be put back
into operation by accident!
Dismantle the dosing head without
connecting the pump to the power supply
and make sure no dosing liquid has
entered the pump housing. Proceed as
described in section
diaphragm and
8.3.2 Dismantling the
valves.
7