Wilo Pump MAXO-D 1.25 x 3 – 30

Allow the pump to cool down before commencing any work

Close shut-off device or drain unit

Follow the manufacturer’s instructions and safety data sheets for possible additives in the system

Dismantle the two-part thermal insulation from the pump housing of single pumps

Loosen screws of the fixing plate

Avoid flow in the pump during dismantling/installation work

Close the existing shut-off valves in front of and behind the pump

Drain the system if no shut-off valves are fitted

Ensure no objects are placed in the contact area of the motor

Ensure correct assignment of pump/electronic module during replacement

Disassembling the Electronic Module

Loosen handle grip of the Wilo-Connector using a screwdriver and pull out socket

Allow the pump to cool down before commencing any work

Close shut-off device or drain unit

Follow the manufacturer’s instructions and safety data sheets for possible additives in the system

Dismantle the two-part thermal insulation from the pump housing of single pumps

Loosen screws of the fixing plate

Lift the sensor into the groove with a flat screwdriver if required

Avoid flow in the pump during dismantling/installation work

Close the existing shut-off valves in front of and behind the pump

Drain the system if no shut-off valves are fitted

Remove sensor cable carefully from the electronic module

O-ring Installation and Leak Test

Insert the O-ring between the motor head and pump housing

Install the O-ring without torsion in the edge of the bearing plate facing toward the impeller

Ensure generator or turbine is not operating during pump flow

Close the existing shut-off valves in front of and behind the pump

Drain the system if no shut-off valves are fitted

Ensure no objects are placed in the contact area of the motor

Ensure correct assignment of pump/electronic module during replacement

Disassembling the Electronic Module

Loosen handle grip of the Wilo-Connector using a screwdriver and pull out socket