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7.1. BASIC MAINTENANCE GUIDE
Batteries, fans and capacitors must be replaced at the end of their useful lifetime.
Inside the UPS there are dangerous voltages and metallic parts at very high
temperatures, even though the UPS may be shut down. Any direct contact can
cause electrocution and burns. All the operating, apart from battery fuse
replacement, must be done by authorized technical staff.
Some internal parts of the UPS (terminals, EMC filters and measurement circuits)
are still under voltage during maintenance bypass operations. To cancel all the
voltages, the mains and bypass circuit breakers on the panel that feeds the UPS
and the fuse holders of the external battery cabinet have to be turned “OFF” /
“0”. The internal batteries must also be isolated from the system. Together with
this, the 3-pole circuit breakers for measuring the battery voltage located within
the upper part of the equipment is released.
7.1.1. BATTERY FUSES
There is significant risk if an attempt to switch either the battery switch or fuse box
switch (“ON” or “I”) before the message “Battery Switch Connect” appears in the
display, an arc may result and the switch destroyed.
Replace defective battery fuses only with fuses of the same type rating.
7.1.2. BATTERIES
Battery life depends largely on how the batteries are used (partial or full discharge,
number of cycles) and on the ambient temperature.
With the use of batteries in an unsuitable condition or in incorrect numbers there
is a risk of fire or explosion.
Do not dispose of batteries in fire, they may explode. Do not open or damage
batteries, battery acid is toxic and can cause chemical burns to skin and eyes.
7. MAINTENANCE, WARRANTY AND SERVICE