Power Supply User Manual

42
The manual bypass enables maintenance and service
personnel to perform work on the PROTECT 1. without
having to switch off the load circuit.
If the current supply fails while the manual
bypass is active, a total failure of the load supply
results. For this
reason, it should be switched
back to normal operating mode as soon as
possible.
6.1.5 Unit overload
The load on the UPS should never exceed the specified rated
load of the unit. If a unit overload occurs nevertheless (from
105% of the specified unit rated load) then the Fault LED lights
up and an acoustic signal sounds (twice per second). The
connected loads continue to be supplied for a certain length of
time depending on the level of the overload. However, the
connected load must be reduced without delay.
Non-observance of the "unit overload" condition may cause
the total loss of all UPS functions!
Also avoid short-term unit overloads, which may, for example,
occur when connecting a laser printer or laser fax machine.
Do not connect any household appliances or machine tools to
the UPS.
Never connect or switch on any additional loads
to the UPS if there is a mains failure, i.e. if the
UPS is working in emergency power mode!
As a rule, if there has never been an overload during normal
mode, there will not be one in battery mode either.
When the Fault LED lights up in connection with
a continuous acoustic signal, this is an indication
of a deactivating fault. Follow the instructions on
page 49.