Wilo Pump TOP-S40/7

7.1.3 Insulation of the pump in cooling/air-conditioning systems

Verify that the two half-shells of the thermal insulation are correctly fitted

Check that the guide pins are engaged in the opposite holes

For cooling/air-conditioning systems, verify the use of commercially-available diffusion-proof thermal insulation materials

Ensure all poles of the power supply are disconnected before working on the pump

Wait 5 minutes before commencing work on the module to allow hazardous voltages to dissipate (applies only to 1~ systems)

Verify that all connections (including potential-free contacts) are voltage-free

Is the module/terminal box undamaged?

Does the current type and voltage of the mains connection correspond to the specifications on the rating plate?

Ensure the electrical connection is established via a fixed connection line with a connector device or an all-pole switch with a contact opening width of at least 3 mm

Check for leaks after installation

Periodically verify all connections remain leak-free during operation

Describe any leakages of hazardous fluids and actions taken to remove them

Close the check valve on the pressure side

Protect electrical parts from any escaping water

Carefully open the venting screw using a suitable tool

Is the necessary inlet pressure present at the suction side of the pump?

Carefully push back the motor shaft with a screwdriver several times

Wait for 15 to 30 seconds before screwing the venting screw back in

Screw the venting screw back in

Motor Protection System Verification

Verify terminal box type and corresponding protection mechanism

Enter the maximum current setting for thermal tripping

Is the thermal tripping setting correct according to the rating plate?

Is the Wilo tripping unit SK 602(N)/SK 622(N) present?

Is the thermal winding contact (WSK) connected to a motor protection system?

Perform reset based on terminal box type