Wilo CronoLine-IL-E Notice De Montage Et De Mise En Service page 114

en
8 Electrical connection
114 Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoTwin-DL-E, Wilo-CronoBloc-BL-E • Ed.01/2024-02
CAUTION
If the rubber plug is removed, protection class IP55 is no longer ensured!
NOTICE
In the case of insulated systems only the pump housing may be insulated
as a rule, but not the lantern, drive or differential pressure sensor.
In case of very strong condensation and/or ice formation, any surfaces of the lantern which
are very wet with condensate can also be insulated additionally (direct insulation of indi-
vidual surfaces). Ensure that the condensate drains out of the hole in the lantern.
If service is necessary, the dismantling of the lantern must not be obstructed. The following
components must always be freely accessible:
• Air vent valve
• Coupling
• Coupling guard
Observe DIN EN 12828. When using insulation materials, pay attention to material compat-
ibility. Ammonia compounds can cause stress corrosion cracking on brass materials (e.g.
differential pressure sensor, air vent valve). Avoid direct contact with brass materials.
DANGER
Danger of death due to electrical current!
Improper conduct when carrying out electrical work can lead to death
due to electric shock!
• Electrical connection may only be carried out by a qualified electrician
and in accordance with the applicable regulations!
• Adhere to accident prevention regulations!
• Before beginning work on the product, make sure that the pump and
drive are electrically isolated.
• Make sure that no one can turn on the power supply again before
work is completed.
• Make sure that all energy sources can be isolated and locked. If the
pump was switched off by a safety device, it must be secured against
switching back on again until the error has been remedied.
• Electrical machines must always be earthed. Earthing must be appro-
priate for the drive and meet the relevant standards and regulations.
Earth terminals and fixation elements must be suitably dimensioned.
• Connection cables must never touch the piping, pump or motor
housing.
• If it is possible for persons to come into contact with the pump or the
pumped fluid, the earthed connection must also be fitted with a re-
sidual current circuit breaker.
• Observe the installation and operating instructions for the accessor-
ies!