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10.1 RESIDUAL RISKS
This paragraph sets forth any residual risks which cannot be eliminated by the manufacturer in the design stage.
Risk due to:
Precautions/Corrections
There is always the risk of the unit falling or tipping over during handling. Follow the instructions in the "Handling"
Handing
section and take all of the precautions foreseen according to local regulations.
Unsuitable installation can cause water leaks, gas leaks, electric shocks, fire hazards, malfunctioning or damage of the
unit. Only qualified technical personnel can perform installation.
Installation
Place the unit in an appropriate area and without the risk of flammable gas leaks. Make the installation zone inacces-
sible to third parties.
Fix the electrical panel properly. Infiltration may cause shocks and short circuits resulting in personal injury/ property
Dust/water in the elec-
damage or damage to the unit.
tric panel
Pay special attention to the earthing connection.
During maintenance, which must always be carried out by authorised personnel, make sure that the disconnector is
Maintenance
off and that no one can accidentally modify the disconnection measures of the appliance from the unit by means of
specific warnings and an adequate padlock.
Contact with the fan can cause injury and/or death. Do not access the unit or remove the protections while the fan is
Fan
running.
Refrigerant gas leakage Wear suitable PPE as a gas leakage could cause injury and intoxication. Carefully read the "Safety data sheet of the re-
frigerant" included in the manual. Do not make use of heat sources near the circuit before it is completely discharged.
These can cause personal harm and property damage and risk a short circuit. We recommend positioning the shut-off
Water leaks
valves.
• All personnel working on the refrigeration circuit must be able to present a certificate of competence, issued by an organization with indus-
trial accreditation. This certificate confirms, through industry standard procedure, their competence in the safe management of refrigerants.
• Maintenance operations can only be carried out in compliance with the manufacturer's specifications. If maintenance and repair operations
require assistance from additional staff, the person qualified for the management of flammable refrigerants must constantly supervise the
work.
• Before starting any operation on devices with flammable refrigerant, safety checks must be performed in order to minimize the risk of igni-
tion. Take the following measures before working on the cooling circuit:
Measure
General working environment
• Inform the following persons of the type of work to be carried out:
–All
–All persons in the vicinity of the system.Delimitare l'area attorno alla pom-
1
pa di calore.
• Mark out the area around the heat pump.
• Survey the immediate surroundings of the heat pump for flam- mable mate-
rials and sources of ignition.
Checking for the presence of refrigerant
• In order to recognise a flammable atmosphere in time:Before, during and
2
after the work, check the surrounding area for any escaping refrigerant, us-
ing an explosion-proof refrigerant detector suitable for R32.This refrigerant
detector must not generate any sparks and must be suitably sealed.
Fire extinguisher
Un A CO2 or powder extinguisher must be at hand in the following ca- ses:
3
• Refrigerant is being topped-up.
• Welding or brazing/soldering work is being carried out.
Sources of ignition
• When carrying out work on a refrigerant circuit that contains or previously
contained flammable refrigerant, never use sources of ignition that could
ignite the refrigerant. Remove all possible sources of ignition, including ciga-
rettes, from the area where installation, repair, dismantling or disposal work
4
is taking place that may result in refrigerant escaping.
• Before starting work, survey the immediate surroundings of the heat pump
for flammable materials and sources of ignition: Remove all flammable ma-
terials and sources of ignition.
• Display no smoking signs.
Ventilating the work location
• Carry out repairs outdoors, or provide adequate ventilation for the work
location before interfering with the refrigerant circuit or commencing any
welding or brazing/soldering work.
5
• The ventilation must be maintained for the entire duration of the work. The
ventilation should dilute any refrigerant that may es- cape and should ideally
discharge it to atmosphere.
32
maintenance
Picco R32
Completed
personnel
Air/Water heat pumps with axial fans
Notes
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