MTA DEOO3 Manual De Instrucciones Y Mantenimiento página 26

Enolish
4.2.3.
Lifting
and
transport precautions
Prevent dangerous situations for
arising
when using
a
hoist
to
lift heavy loads
Make sure
that all chains, hooks, shackles and slings are in good condition and are
of
lhe correct cepacity.
They must be
tested and approved according lo local safety regulations.
Cables, chains or ropes musl never
be
applied direclly to eyebolts.
Always use a properly positioned shackle or hook.
Anange the lif,ing cables so that there are no sharp bends.
Use a
spreader
bar
to avoid
slde
loads on hooks
and
eyebolts
Vvhile a load is being lifted, keep clear of the area beneath and around it.
Keep lifiing acceleralion and speed
within sate limits and never leave a load hanging on a
hoist
for longer than
is
necessary.
The
mo\red in
the
consult lhe
linal
of this
4.2.4.
Precautions during installation and operation
For conneclions to
the mains power supply, please
see chapler 7.
Piping
or other parts with lemperalures in excess of
60"C (140'F)
and which may be accidentally touched by personnel during normal operation
musl be guarded or
insulated.
All piping must be painted
or
dearly
marked in accordance with locel safety
r€ulations.
Never remore or tamper
with
the salety devices, guards or insulation material
frned lo the unit or auxiliary equipment.
All electrical conneciions
must
comply wilh local regulations.
The
unit
and auxiliary €quipment must be
earthen and pmtecled
by fuses against short-circuits and o\rerloading.
\Mren mains power is swilched on, lethal vohages are present
in
the elec{rical circuits and the greatest
ot
care must
be
taken whenever il is necessary
lo
do
any
work
on
the electrical system.
Oo not
open
any
eledrical panels while voltage
is
applied unless this is
necessary
for measurements, tests or adjustments.
This
job
should
only b€ canied out by a qualitled eleclrician equipped with the proper tools
and wearing appropriate personal protection equipment
againsl
electrical
hazsrds.
4.2.5.
Maintenance and repair
precautions
Vvhen
disposing of parB
and waste material of any kind take care not to
pollute drains
or waler-course.
Do not burn any
waste which could cause air pollution.
Prolecl the environmenl
by using
approved storago methods
ll
replacement parts are needed always
use
original spares.
Keep a written record
c,f
all maintenanc€ and repair work caried
out on
the
unit
and auxiliary equipment
Th6 frequency
and
the nalure
d
the work required over a
certain period
may
give
,ise
to adverse operating conditions which should be correcled.
Use only refrigerant
gas
specified on the data
plato of lhe unlt.
Make sure that all operating and maintenance instruciions are stric{y followed and that the
comdete
unit, with all accessories and safety devices, is kepl in good working
order.
Regularly check the accuracy
of
pressure
and
temperature gauges.
Redace them when acceptable tolerances arg exceeded.
Keep lhe machine
dean
at all limes.
Ouring maintenanc€ and
repair
work, protecl crmponents and exposed openings
by
covering them with clean cloths
Precautions must
b6
taken when carrying oul welding or other repair operations which generale
heat, flames or sparks.
Always
proled
nearby components with non-flammable material.
Never carry
out
welding or other repair operations which generate
heat
dose to
a
component containing oil
Before carrying out th€sa operations th6 systems musl first bo
thoroughly purged and deaned, prererably
by steam cleaning.
Never
weld or otherwiso modify a pressure vessel.
To pret/enl increases
in
working temperatures and pressures, inspecl and
clean
the
heat
transfer surfaces
(e.g
condenser cooler ,ins) at regular intervals
Prepare a suitable dcaning schedulc for each
unit.
Do not damage safety \relves
and other pressure
relief
deMcrs
Do
nol dog
these component8 with painl, oil
oa
accumulated
dirt.
Never
us6
a light sour@ such
as
a
naked
f,am6 to insped the inside
of
the unit.
Before dismantling any
part of the unil ensure that
all
heavy movable parts are secured.
Afrer completing a repair, make sure
no
tools, loose parts or
rags
are left
inside
the machine.
Check the direction of
rotation of eleclric motors (three.phase fans) when starting up the
unit for lhe tirst
lime and aner any work on the electrical connedions or switch
geal.
Pd back all guards aner carrying out repair or mainlenance work.
Do not use
flammablo llquld to clean components while the unit
i3
working.
lf non-llammable chlorinated hydrocarbon fluids are used
ior deaning, safety precautions must
b€
iaken against the release
of
loxic vapours.
Beforo removing any panels or dismantling any part of the unit, carry
out
lhe follo\fling operations:
O
Disconned the power caHe
of
the unil
from
the mains eleddcity supply.
O
Lock the main switch, if present,
in
the "OFF" position wilh a padlock.
tr
Atlach
a
warning label
to
the main ssitch (if
present) reading: 'WORK lN PROGRESS -
DO
NOT SWTCH ON'.
tr
Do not
s
rilch
on
the mains elecldcity supdy or attempt to starl thc unil
if a
waming label
is
attached.
A
The
weights of the units
are
shown on thelr data plates
and
on the top side of the packaging.
4