Nidec Digistart D3 User Manual

Nidec Digistart D3 User Manual Manual pdf 111 page image

Digistart D3: User Guide 111Issue: G12 MaintenanceNOTEThe Digistart D3 is not user serviceable. The unit should only be serviced by authorised service personnel.Unauthorised tampering with the unit will void the product warranty.• Before carrying out any work, disconnect and lock the starter's power supply and wait 2 minutes to ensurethat the capacitors have discharged.• When the starter trips, fatal residual voltages may remain at the output terminals and in the starter.• During maintenance operations performed with the starter switched on, the operator must stand on aninsulated surface which is not connected to ground.• During work on a motor or its power supply cables, ensure that the power supply of the correspondingstarter is disconnected and locked.• Protective covers must remain in place during tests.There are very few maintenance and repair operations for the user to perform on Digistart D3 soft starters. Regularservicing operations and simple methods for checking that the starter is operating correctly are described below.12.1 CarePrinted circuits and internal components do not normally require any maintenance. Contact your local distributor orthe nearest approved repair company in the event of a problem.CAUTIONDo not dismantle the printed circuits while the starter is still under warranty. Unauthorised tampering withthe unit will void the product warranty.Do not touch the integrated circuits or the microprocessor either with your fingers or with materials which are chargedor live. Ground yourself, as well as the workbench or the soldering iron, while performing any work on the circuits.From time to time, check that the power circuits are correctly tightened.12.2 Measuring the motor currentThe current drawn by the motor and the starter input current can be measured approximately using a conventionalmoving coil ammeter.12.3 Measuring the input and output powerThe starter input and output power can be measured using an electrodynamic instrument.12.4 Exchanging productsCAUTIONProducts must be returned in their original packaging or, if this is not possible, in similar packaging, toprevent their being damaged. Otherwise, replacement under warranty could be refused.

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