nVent Hoffman CUVN03602 Manuel D'utilisation Et D'entretien page 27

Leakages or damages in
the refrigerant piping due
Near the unit, by a wrong transport of
on refrigerant the unit. High pressure
pipes switch defective; fire. Con-
sequent explosion of the
refrigerant circuit.
Condensation on the
refrigerant pipes if not
Near refrigerant
insulated. Damages on the
fittings
refrigerant pipes, wrong
installation of the joints.
Hot compo- Leakages in the refriger-
nents of the unit ant piping, contact with
accessible from surface at high or low
outside (con- temperature, presence
denser, refriger- of electrical heater into
ant lines) the unit(optional) or on
the damper
Near the unit Leakages in the refrig-
erant piping and the
evaporator; incorrect
installation of the piping
connection
Near the unit Short circuit; wrong
(electrical box, dimensioning of the
supply cables) cables or of the general
breaker.
In contact with Electrical connection
the unit against regulations
and missing ground
connection.
Electrical box Powered line even if the
switches of the unit is
on OFF. Supply cables
under voltage, compo-
nents not working or
damaged.
Electrical box Electrical arc and
electromagnetic phe-
nomenon on the start
up of the unit. Presence
of other units in the
proximities. Overload of
the electrical cabinet.
Components becoming
conductive in case the
insulation is damaged.
Near the unit Risk of thunder near
the unit
Near the unit Condensate water,
cumulate of dirt or
substances which could
create chemical or
mechanical strains
Electrical box Powered line even if the
switches of the unit is
on OFF. Supply cables
under voltage, compo-
nents not working or
damaged.
EN/02.2019 ELDON – all rights reserved
Check high pressure
components and refrig-
Cuts, collisions,
erant pipes after the
drilling, push,
transport of the unit.
explosion.
Personnel trained and
authorized.
Electrocu- Insulate the piping. Peri-
tion, slipping, odical check of the refrig-
corrosion erant pipes. Wear PPE.
Fire, burns, Check the fixed barrier
chemi- guards of the unit. Ban
cal effect, the use of any materi-
asphyxia, als or component,
freezing, loss which could create
of mobility or an explosive environ-
conscious- ment. Trained and
ness authorized personnel.
Wear PPE
Freezing, Periodic control. The
slipping and operator needs to
corrosion avoid direct contact
with refrigerant piping.
Trained and author-
ized personnel. Wear
PPE.
Electrocution, Check the fixing of
fire, form- cables in the termi-
ing of acid nals: select adequate-
vapours. ly supply cables and
main switch. Wear
PPE.
Electrocution Remain electrically
insulated from the
ground. Wear PPE.
Electrocu- Check that the power
tion, burns, supply of the electrical
chemical box has been insu-
effect, electro lated. Remain electri-
shock, pro- cally insulated from
jections of the ground. Check
melted par- the integrity of the
ticle, effect components inside
on medical the electrical box
implants. Personnel trained and
authorized. Wear PPE.
Electrocu- Remain electrically
tion, burns, insulated from the
chemical ground. Check the
effect, electro integrity of the com-
shock, pro- ponents inside the
jections of electrical box. Wait the
melted par- condenser to unload
ticle, effect before to enter in con-
on medical tact with the live com-
implants. ponents. Personnel
trained and author-
ized. Wear PPE.
Electrocution, Be sure the installa-
burns, electro tion site is restricted to
shock, fire trained and authorized
personnel. The instal-
lation site needs to be
certificated against
lightings. Earthing
arranged on the frame
of the unit.
Corrosion, Periodic control of the
slipping, fall, discharges. Check
explosion, the safety devices of
burns, the refrigerant piping.
Respect the sched-
uled maintenance.
Personnel trained and
authorized. Wear PPE.
Electrocution, Check the insulation
burns, elec- of the power supply
tro shock, from the electrical
projections panel. Be sure that the
of melted main switch will not
particle. be re-activated during
maintenance. Check
the integrity of the
components inside
the electrical box.
C U V N - C U O N - T R A N S L AT E D I NS T R UC T I O NS
Internal hot Contact with hot
components surfaces.
(compressor,
condenser,
refrigerant lines)
• Dismantling
Area Danger
Near the unit Fire in the com-
partment where
the unit is installed
Near the unit Defective elastic
carrying belts used
to remove the pal-
let under the unit
Under the Defective lifting
unit system of the unit
that causes its fall.
Under the Fall of loose com-
unit ponents of the unit
Near the unit Unstable or unsuit-
able support of the
unit which causes
its overturn.
Near the unit Leakages in the
refrigerant circuit;
the system of
refrigerant recov-
ery is defective.
Consequent explo-
sive rupture of the
refrigerant circuit.
Near the unit Leakages of oil
during recovery.
Near the Disconnecting the
refrigerant pipes still under
fittings pressure
Electrical box Powered line even
if the switch of the
machine is on OFF.
• Toxic substances: the gas contained in this unit is of
ecological type and is called R134a (Tetrafluoroeth-
ane). It is present in reduced quantities and the refrig-
erant circuit is completely sealed. During testing, all
leaks exceeding 3 grams per year are checked and
removed. The refrigerant gas manufacturer declares
that gas concentrations less than 1/1000 are harm-
less. If the unit is not installed in ventilated or of ade-
quate size rooms and a rapid loss of refrigerant is
detected, it is recommended to remove the opera-
tors and ventilate the room.
Managers must be informed on potential risks exist-
ing in the system and control the electrical equipment
personnel. This control consists in locating possible risk
conditions and investigate the problems encountered
by personnel during maintenance. Each defective
component must be repaired or replaced immediately.
The manager must insist on the use of safety measures
Burns Wear PPE.
Risk Preventive measures
Burning, explosion Be sure the installa-
tion site is restricted to
trained personnel.
Contusions, trau-
Keep away from dan-
mas , cuts, bump, gerous area during the
collision, shearing handling of the unit.
Personnel trained and
authorized. Wear PPE.
Contusions, trau- Keep away from danger-
mas, entrapment, ous area during handling
bump, dragging, of the unit. Wear PPE.
crushing, collision
Contusions, trau- Keep away from danger-
mas, entrapment, ous area during handling
bump, dragging, of the unit. Personnel
crushing, collision trained and authorized.
Wear PPE.
Contusions, trau- Be sure that the unit has
mas, entrapment, an adequate support in
bump, dragging, relation with its weight,
crushing, collision it's stable and levelled.
Personnel trained and
authorized. Wear PPE.
Burns, forming of Personnel trained and
acid vapours in authorized. Wear PPE.
presence of flames
Contact of the oil Personnel trained and
with skin or eyes authorized. Wear PPE.
Burns, forming of Recovery of gas before
acid vapours in disconnecting the pipes.
presence of flames Personnel trained and
authorized. Wear PPE.
Electrocution Check the insulation of
the power supply from
the electrical panel. Be
sure that the main switch
will not be re-activated
during maintenance.
EN
27