For health and safety reasons, the unit must be earthed correctly!

The PROTECT 1. may only be operated with or connected to a three-phase power system with protective grounding using a mains connection cable with PE conductor that has been tested according to German standards (VDE).

Risk of burning!

The battery has powerful short-circuit currents. Incorrect connection or isolation faults can lead to melting of the plug connections, sparking potential and severe burns!

The unit has a warning signal that sounds when the battery voltage of PROTECT 1. is exhausted or when the UPS is not working in its normal mode (see also chapter 8 "Signalling”, page 47 and the following).

Observe the following safety instructions to ensure permanent operational safety of and safe work with the UPS and the battery modules (special accessories):

♦Do not dismantle the UPS!

(The UPS does not contain any parts that require regular maintenance. Bear in mind that the warranty will be invalidated if the unit is opened!)

♦Do not install the unit in direct sunshine or in close proximity of heaters!

♦The unit is designed to be installed inside in heated rooms. Never install the housing in the vicinity of water or in an excessively damp environment!

♦Condensation may occur if the UPS is brought from a cold environment into the room where it is to be installed. The UPS must be absolutely dry prior to start- up. As a result, leave it to acclimate for at least two hours.

♦Never connect the mains input and the UPS output!

17