Insulation Of The Pump In Systems With Condensate Formation; Electrical Connection - Wilo Stratos PARA Série Notice De Montage Et De Mise En Service

7.1.2 Insulation of the pump in systems with condensate formation

The pumps of the Wilo-Stratos PARA series are suitable for use in air conditioning, cooling,
geothermal energy and other similar systems with fluid temperatures down to -10°C. Con-
densate can form on parts that come into contact with the fluid, such as pipes and pump
housings.
• A diffusion-proof insulation must be provided on-site for application in such systems
(e.g. Wilo Cooling Shell).
CAUTION! Risk of material damage!
If the diffusion-proof insulation is fitted on-site, the pump housing of the Stratos
PARA 1-8, 1-11, 1-12 pumps should only be insulated up to the motor's separation
joint. The condensate drain grooves must remain unobstructed to ensure that conden-
sate that develops in the motor can drain without problems (Fig. 3). Condensate that
accumulates in the motor can cause an electrical defect.
• Condensate cannot form on the inside of Stratos PARA 1-5, 1-7, 1-9, 1-11,5 pumps due
to the special design of the motor.
• To protect against corrosion, the pump housings of all Stratos PARA pumps are provided
with a cataphoretic coating.
7.2

Electrical connection

DANGER! Risk of fatal injury!
Improper electrical connections can lead to fatal electric shock.
• Only allow the electrical connection to be made by an electrician approved by the local
power supply company and in accordance with the local regulations in force.
• Before working on the pump, all poles of the supply voltage must be disconnected.
Work on the pump may only be started after 5 minutes have elapsed due to the dan-
gerous residual contact voltage.
• Check whether all connections (including potential-free contacts) are voltage-free.
• If the control module/cable is damaged, do not operate the pump.
• If setting and operating elements are improperly removed from the control module,
there is a danger of electric shock if interior electrical components are touched.
• The pump should neither be connected to an IT network nor to an uninterruptible
power supply.
CAUTION! Risk of material damage!
An incorrect electrical connection can cause material damage.
• If the wrong voltage is applied, the motor can be damaged!
• Control via triacs/semiconductor relay is not permitted!
• When conducting insulation tests with a high voltage generator, the pump must be
completely disconnected from the mains in the system's switchbox.
• The current type and voltage of the mains connection must correspond to the specifica-
tions on the rating plate.
DANGER! Danger of electric shock!
If the cable has been separated from the pump as a result of force, there is a risk of
personal injury by electric shock.
CAUTION! Risk of material damage!
Modifications to the connection cable can cause damage to property.
Installation and operating instructions Wilo-Stratos PARA/-Z
English
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