30
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
Handling
There is always the risk of the unit falling or tipping over during handling. Follow the instructions in the
“Handling” section and take all of the precautions foreseen according to local regulations.
Installation
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.
Place the unit in an appropriate area and without the risk of flammable gas leaks. Make the installation zone
inaccessible to third parties.
Dust/Water in the
electric panel
Fasten the panel of the electrical switchgear correctly. Any infiltrations can cause shocks and short-circuits
causing personal harm and damage to property or to the unit itself.
Pay special attention to the earthing connection.
Maintenance
During maintenance, which must always be carried out by authorised personnel, make sure that the
disconnector is 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.
Fan
Contact with the fan can cause injury and/or death. Do not access the unit or remove the protections while
the fan is running.
Refrigerant gas
leakage
Wear suitable PPE as a gas leakage could cause injury and intoxication. Carefully read the “Safety data sheet
of the refrigerant” included in the manual. Do not make use of heat sources near the circuit before it is
completely discharged.
Water leaks
These can cause personal harm and property damage and risk a short circuit. We recommend positioning
the shut-off valves.
■
All personnel working on the refrigeration circuit must be able to present a certificate of competence, issued by an
organization with industrial 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 ignition. Take the following measures before working on the cooling circuit:
Measure
Completed
Notes
1
General working environment
■
Inform the following persons of the type of work to be carried
out:
–
All maintenance personnel
–
All persons in the vicinity of the system.
■
Cordon off the area around the heat pump.
■
Survey the immediate surroundings of the heat pump for flam-
mable materials and sources of ignition:
Remove all flammable materials and sources of ignition.
2
Checking for the presence of refrigerant
■
In order to recognise a flammable atmosphere in time:
Before, during and after the work, check the surrounding area
for any escaping refrigerant, using an explosion-proof refrigerant
detector suitable for R32.
This refrigerant detector must not generate any sparks and must
be suitably sealed.
3
Fire extinguisher
A CO
2
or powder extinguisher must be at hand in the following ca-
ses:
■
Refrigerant is being topped-up.
■
Welding or brazing/soldering work is being carried out.
