English
7.3
Electrical connection
Safety
90
NOTE:
If the plastic plug is removed, protection class IP 55 is no longer
ensured.
NOTE:
In the case of insulated systems, only the pump housing may be insu-
lated, not the lantern, drive and differential pressure sensor.
An insulating material which does not contain ammonia compounds
must be used when insulating the pump, in order to prevent stress cor-
rosion cracking of the union nuts If this is not possible, direct contact
with the brass screw connections must be avoided. Stainless steel
screwed connections are available for this as an accessory. As an alter-
native, corrosion protection tape (e.g. insulating tape) can also be used.
DANGER! Risk of fatal injury!
An improper electrical connection can result in a fatal electrical
shock.
• Have the electrical connection established by an electrician
approved by the local electricity supplier only and in accordance
with local regulations.
• Observe the installation and operating instructions for the acces-
sories!
DANGER! Risk of fatal injury!
Contact voltage hazardous to human life.
Work on the electronic module may only be started once 5 minutes
have passed, due to the dangerous residual contact voltage
(capacitors).
• Before working on the pump, disconnect the power supply and
wait for 5 minutes.
• Check whether all connections (including potential-free contacts)
are voltage-free.
• Never use an object to poke around the openings on the electronic
module and never insert anything into the terminal box!
DANGER! Risk of fatal injury!
For generator operation or turbine operation of the pump (rotor
drive), there may be a dangerous contact voltage at the module's
contacts.
• Close the shut-off device upstream and downstream of the pump.
WARNING! Risk of mains overload!
An inadequate mains design can lead to system failures and cable
fires due to mains overload.
• When designing the mains, with regard to the cable cross-sections
and fuses, give special consideration to the fact that short-term
simultaneous operation of all pumps is possible in multi-pump
operation.
Salmson 01/2017