7
!
2.3.5
Maintenance,
service
and
faults
•
The UPS system operates with hazardous
!
!
voltages. Repairs may be carried out only
!
!
by qualified maintenance personnel.
!
•
Caution - risk of electric shock. Even after
!
!
the unit is disconnected from the mains
!
!
(building wiring outlet), components inside
!
!
the UPS system are still connected to the
!
!
battery and electrically live and dangerous.
!
•
Before carrying out any kind of service and/
!
!
or maintenance, disconnect the batteries
!
!
and verify that no current is present and no
!
!
hazardous voltage exists in the terminals
!
!
of high capability capacitor such as BUS-
!
!
capacitors.
!
•
Only persons are adequately familiar
!
!
with batteries and with the required
!
!
precautionary measures may replace
!
!
batteries and supervise operations.
!
!
Unauthorized persons must be kept well
!
!
away from the batteries.
!
•
Caution - risk of electric shock. The battery
!
!
circuit is not isolated from the input
!
!
voltage. Hazardous voltages may occur
!
!
between the battery terminals and the
!
!
ground. Before touching, please verify that
!
!
no voltage is present!
!
•
Batteries
may
cause
electric
shock
and
have
!
!
a
high
short-circuit
current.
Please
take
the
!
!
precautionary
measures
specified
below
!
!
and
any
other
measures
necessary
when
!
!
working
with
batteries:
!
! !
Remove
wristwatches,
rings
and
other
!
! !
metal
objects
!
! !
Use
only
tools
with
insulated
grips
!
! !
and
handles.
!
•
When
changing
batteries,
install
the
same
!
!
number
and
same
type
of
batteries.
!
•
Do
not
attempt
to
dispose
of
batteries
by
!
!
burning
them.
This
could
cause
battery
!
!
explosion.
!
•
Do
not
open
or
destroy
batteries.
Escaping
!
!
electrolyte
can
cause
injury
to
the
skin
and
!
!
eyes.
It
is
toxic.
!
•
Please
replace
the
fuse
only
with
the
same
!
!
type
and
amperage
in
order
to
avoid
fire
!
!
hazards.
!
•
Do
not
dismantle
the
UPS
system.
!
Important
Safety
Warning
!
WE
RECOMMEND
THAT
INSTALLATION
!
AND
SERVICING
OF
THE
SWITCHBOARD
!
SHOULD
ONLY
BE
CARRIED
OUT
BY
!
SUITABLY
QUALIFIED
PERSONNEL
WITH
THE
!
NECESSARY
TRAINING.
!
•
Do
not
open
the
switchboard
!
•
Do
not
remove
the
switchboard
from
the
!
!
Micro
Data
Centre
without
contacting
!
!
Zellabox
first.
!
•
Power-down
procedure:
!
- Switch
off
each
component
first
before
!
!
switching
off
mains
plug.
!
-
In
order
to
power
down
one component
at a
time
simply
switch off
relative
plug
before
working on respective
component.
Note
–
there
is no
need
to
switch
off
entire
switchboard.
!
!
-
Caution
–
ensure
you
are
switching
off
!
!
the
correct
component
before
working
!
!
on
that
component.
!
Zellabox
!
Safety
Instructions
!
2.4
Switchboard
!
Summary of Contents for Cubb
Page 1: ...1 Zellabox User Manual...
