Electrical Connection - Wilo TOP-Z Serie Instrucciones De Instalación Y Funcionamiento

• Install appropriate flat gaskets between pump and counter flanges.
• Tighten the flange bolts crosswise in two steps to the prescribed tightening
torque (see Table 7.1.2).
• Step 1: 0.5 x permissible tightening torque
• Step 2: 1.0 x permissible tightening torque
• Check the flange connections for leaks.
• Single pump:
Fit the two half-shells of the thermal insulation before commissioning and push
them together so that the guide pins engage in the opposite holes.

7.2 Electrical connection

DANGER! Risk of fatal injury!
Improper electrical connections pose a risk of fatal injury due to electric
shock.
• Only allow the electrical connection and all associated activities to be con-
ducted by an electrician approved by the local power supply company and in
accordance with the local, applicable regulations.
• Before working on the pump, all poles of the power supply must be discon-
nected. Because voltages hazardous to persons persist for some time (in
condensers), no work may be commenced on the module until 5 minutes
have elapsed (applies only to 1~ systems). Check to ensure that all connec-
tions (including potential-free contacts) are voltage-free.
• If the module/terminal box is damaged, do not operate the pump.
• If the setting and operating elements on the module/terminal box are unduly
removed, there is a danger of electric shock by touching the electrical com-
ponents located inside.
CAUTION! Risk of damage to property!
An incorrect electrical connection can cause damage to property.
If the wrong voltage is applied, the motor can be damaged!
• The current type and voltage of the mains connection must correspond to the
specifications on the rating plate.
• The electrical connection must be established via a fixed connection line
equipped with a connector device or an all-pole switch with a contact opening
width of at least 3 mm.
• Mains-side fuse protection: 10 A, slow-blow.
• The pumps can also be used without restriction in existing installations with and
without residual-current-operated protection switches. When dimensioning
the residual-current-operated protection switch, consider the number of
pumps connected and their motor currents.
• When pumps are used in systems with water temperatures above 90°C, a suit-
able heat-resistant supply cable must be used.
Installation and operating instructions Wilo-TOP-Z
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