CAUTION
Pressurised system
Minor or moderate personal injury
‐ Before dismantling the pump, drain the system or close the isolating valve on either side of the
pump. The pumped liquid may be scalding hot and under high pressure.
If the power supply cable is damaged, it must be replaced by the manufacturer, the manufacturer's
service partner or a similarly qualified person.
Installing a communication interface module
WARNING
Electric shock
Death or serious personal injury
‐ Make sure that other pumps or sources do not force flow through the pump even if the pump is
stopped. This will cause the motor to act like a generator, resulting in voltage on the pump.
WARNING
Electric shock
Death or serious personal injury
‐ Switch off the power supply for at least 3 minutes before you start any work on the product. Make
sure that the power supply cannot be accidentally switched on.
‐ It must be possible to lock the main switch in position 0. Type and requirements as specified in
EN 60204-1, 5.3.2.
Technical data
Ambient temperature
0 to 40 °C.
Ambient temperatures below 0 °C require the following conditions:
• The media temperature is 5 °C.
• The media contains glycol.
• The pump runs continuously and does not stop.
• For twin-head pumps cascade operation every 24 hours is mandatory.
Ambient temperature during transport: -40 to +70 °C.
Liquid temperature
Continuously: -10 to +110 °C.
Stainless-steel pumps in domestic hot-water systems:
In domestic hot-water systems, we recommend that you keep the liquid temperature below 65 °C to eliminate
the risk of lime precipitation.
System pressure
The actual inlet pressure and the pump pressure against a closed valve must be lower than the
maximum permissible system pressure.
The maximum permissible system pressure is stated on the pump nameplate:
PN 6: 6 bar / 0.6 MPa
PN 10: 10 bar / 1.0 MPa
PN 12: 12 bar / 1.2 MPa
PN 16: 16 bar / 1.6 MPa.
Note: Not all variants are available in all markets.
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