Electrical Connection - salmson SIL Serie Instalacion Y Puesta En Servicio

English
r ≈ 2,5 * (d-2s)
5 x DN
Fig. 44: Settling section before and after
the pump
Final check
7.2

Electrical connection

Safety
Preparation/notes
48
NOTE:
A settling section must be provided before and after the pump, in the
form of a straight pipe. The length of this settling section should be at
least 5 x DN of the pump flange (Fig. 44). This measure serves to avoid
flow cavitation.
• Only connect the pipes after the conclusion of all welding and solder-
ing work as well as the cleaning/flushing of the system. Dirt can cause
the pump to fail.
• Remove the flange covers at the suction and pressure ports of the
pump before attaching the piping.
Check the alignment of the unit again as described in chapter 7.1
"Installation" on page 44.
• Tighten the foundation bolts if necessary.
• Check all connections for correctness and function.
• It must be possible to turn the coupling/shaft by hand.
Do not allow the coupling/shaft to turn:
• Release the coupling and re-tighten.
In case this measure is not successful:
• Remove the motor (see chapter 9.2.3 "Changing the motor" on
page 56).
• Clean the motor centring and flange.
• Reinstall the motor.
DANGER! Risk of fatal injury!
Incorrect electrical connections can cause fatal electric shocks.
• Have the electrical connection set up by an electrician approved
by the local electricity supplier only and in accordance with local
regulations.
• Observe the installation and operating instructions for the
accessories!
DANGER! Risk of fatal injury!
Contact voltage hazardous to human life.
Work on the terminal box may only be started once 5 minutes have
passed, due to the dangerous residual contact voltage (capacitors).
• Before working on the pump, disconnect the supply voltage 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 terminal
box or motor and never insert anything into the module or motor!
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 used cable cross-
sections and fuses, pay special attention to the fact that, in multi-
pump operation, it is possible that all pumps operate at the same
time for short periods.
• The electrical connection must be made in accordance with
VDE 0730/part 1 via a fixed mains connection cable, which is provided
with a plug device or an all-pole switch with a contact opening width
of at least 3 mm.
• In order to ensure drip protection and strain relief on the threaded
cable connection, cables are to be used which have a sufficient outer
diameter and are to be screwed sufficiently tightly.
Salmson 11/2017