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

2.6 Diaphragm breakage

If the diaphragm leaks or is broken, dosing liquid
escapes from the drain opening (fig. 1) on the dosing
head. Observe section
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
9.4.1 Dosing liquid in the pump
housing.
To avoid any danger resulting from diaphragm
breakage, observe the following:
• Perform regular maintenance. See section
9.1 Regular maintenance.
• 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 recognize 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.
6
9.4 Diaphragm breakage.
9.6 Repairs.
2.7 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
9.4.1 Dosing liquid in the pump
housing.