Danfoss DLX 4.6 Podręcznik Użytkownika Pobierz pdf (Strona 78)

78 User Guide DLX Series L00410623-1

8. MAINTENANCE

This chapter explains how to switch OFF and discharge the inverter safely. It also provides

an overview of important regular maintenance procedures to ensure trouble-free

operation of the DLX inverters. Finally, it is explained how to remove and return the

inverters.

8.1. Switch-Off

Always turn OFF and disconnect the inverter in the following order prior to maintenance

work or repairs:

DANGER

Never perform work on the inverter without disconnecting both the DC and AC

side because of deadly voltages present at the terminals.

DC Side

• Turn OFF the DC switch.

• Disconnect the connectors.

AC Side

• Turn OFF the AC circuit breaker(s).

• Let the DC capacitor bank discharge.

WARNING

Lethal voltages may be present inside the inverter after switch OFF, because of a

charged capacitor bank. It must be discharged for 1 hour before performing

service or maintenance work on the inverter.

8.2. Regular System Inspections

The DLX inverters are manufactured to operate trouble-free for several years. Performing

regular maintenance will ensure high efficiency and a long service life.

NOTICE

Only permit qualified persons to perform the work inside the inverter!

Maintenance work involving removal of the inverter covers must be performed by

qualified persons only, due to the requirements of the product warranty.

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Danfoss DLX 4.6 Podręcznik Użytkownika Strona 78