9. Servicing the product
DANGER
Electric shock
Death or serious personal injury
‐ Switch off the power supply to the
product including the power supply for
the signal relays. Wait at least 5
minutes before you make any
connections in the terminal box.Make
sure that the power supply cannot be
switched on accidentally.
DANGER
Magnetic field
Death or serious personal injury
‐ Persons with pacemaker must not
handle the motor or rotor.
WARNING
Pressurised system
Death or serious personal injury
‐ Depressurise the system before you
start any work on the product. The
pumped liquid may be scalding hot and
under high pressure.
‐ Drain the system or close the isolating
valves on either side of the pump.
WARNING
Biological hazard
Death or serious personal injury
‐ When servicing the product, only use
Grundfos original spare parts.
Products in normal operation must be inspected once
a year.
Do the following:
1. Inspect the tank.
2. Check the precharge pressure.
Related information
4.2 Adjusting the diaphragm tank pressure
9.1
Cable requirements
WARNING
Electric shock
Death or serious personal injury
‐ Comply with local regulations as to
cable cross-sections.
9.2 Megging
Megging of an installation incorporating
MGE motors is not allowed, as the built-in
electronics may be damaged.
10. Taking the product out of operation
WARNING
Electric shock
Death or serious personal injury
‐ Switch off the power supply before you
start any work on the product. Make
sure that the power supply cannot be
switched on accidentally.
WARNING
Pressurised system
Death or serious personal injury
‐ Depressurise the system before you
start any work on the product. The
pumped liquid may be scalding hot and
under high pressure.
‐ Drain the system or close the isolating
valves on either side of the pump.
19
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