Chapter
8
UPS
Maintenance
The
components
inside the UPS
cabinet
are
secured
to a sturdy metal
frame.
All
repairable
parts
and
assemblies
are
located
for easy removal, with very little
disassembly
.
This
design
allows
authorized
ser
vice
personnel
to
perform
routine
maintenance
and servicing
quic
kly
.
Yo u
must schedule
periodic
performance checks
of your UPS
system
to keep it running properly. R
egular
routine
checks
of
operation
and
system parameters enable
your
system
to function efficiently for many
trouble-
free y
ears.
8.1
Important Safety
Instructions
Remember
that your UPS
system
is
designed
to supply
power
EVEN
WHEN DISCONNECTED FROM THE
UTILITY
POWER. The UPS
module
interiors are
unsafe
until the DC
power source
is
disconnected
and
the
electrolytic capacitors
are
discharged.
After
disconnecting
the utility
power
and the DC
power, authorized
service personnel
should wait at least five
minutes
for
capacitor bleed-off before attempting
internal
access to
the UPS
module.
W
ARNING
•
Servicing and
maintenance
should be
performed
by qualified
service personnel
only
.
•
LETHAL VOLTAGE
PRESENT. This unit should not be
operated
with the
cabinet
doors open
or
protective panels removed.
Do not make any
assumptions
about the electrical
state
of
an
y
cabinet
in the UPS
sy
stem.
Each
battery
string is an
energy source
in itself. DO NOT
A
TTEMPT
TO ACCES S
ANY INTERNAL AREA
OF THE
BATTERY
S
TRING
YOURSELF. VOLTAGES ARE ALWAYS
PRESENT
IN
THE
BATTERY
STRING. If you
suspect
that
a
battery
string
needs service, contact
an Eaton
service
represent
ativ
e.
If the string
requires service contact
an Eaton
service
represent
ativ
e.
Observe these precautions when
working on or around
batteries:
• Remove watches,
rings, or other metal
objects.
•
Use tools with
insulated handles.
•
Wear rubber
gloves
and
boots.
•
Do not lay tools or metal parts on top of
bat
teries.
• Disconnect
the charging
source
prior to
connecting
or
disconnecting terminals.
• Determine
if the
battery
is
inadvertently grounded.
If it is,
remove
the
source
of the ground.
Contact
with
an
y
part of a
grounded battery
can result in electrical shock. The likelihood of such shock is
reduced
if
suc
h
grounds
are
removed
during installation and
maintenance.
•
When replacing
batteries,
use the
same number
of
sealed,
lead-acid
bat
teries.
•
Proper
disposal
of
batteries
is
required.
Refer to your local
codes
for
disposal
requirements.
•
Do not
dispose
of
batteries
in a fire.
Batteries
may
explode when exposed
to
flame.
•
Do not open or
mutilate batteries. Released electrolyte
is harmful to the skin and
eyes.
It may be
to
xic.
Eaton 93E MK2 UPS (10-40kVA, 380/400/415V) Installation and Operation
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