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These pages contain important safety information. Please read carefully before commencing any work on the
equipment to which the instructions refer.
It is assumed that installation, commissioning, service and maintenance activities must only be undertaken only by
competent personnel who have been trained for the activity. They should be familiar with this type of equipment
and the handling of refrigerants and their disposal.
1.
Safety recom m endations
When installing and using the unit please follow the recommendations listed here below.
•
Installation shall be carried out in strict compliance with the diagrams and instructions supplied by the
manufacturer.
•
Damages due to improper connections are excluded.
•
The electric system available where the unit is installed shall meet the relevant standards in force.
•
Maintenance shall be effected by trained personnel or by the manufacturer according to the provisions as per
EN378.
W ARN I NG
Use safety gloves to protect your hands from possible cuts.
The user is strongly recommended to contact the manufacturer before attempting any intervention on the unit and
any use not corresponding to the manufacturer's indications (in particular as for the field of application) and to
enquire about the possible dangers and contra-indications connected with an improper use of the machine.
The unit shall be used following these instructions and sticking to the destination of use indicated by the
•
supplier. Any incorrect use can result in damages to the unit and represents a serious danger for people's
health.
ATTENTI ON
The unit is not suitable for w orking in ex plosive environm ents.
Therefore the use of the unit in an ex plosion-dangerous atm osphere is absolutely forbidden.
When maintenance requires operations on the cooling circuit, drain the system and let it reach the
atmospheric pressure. Oil residuals left in the refrigerant receiver should be recovered and disposed of by
specialized firms, specially authorized by the national regulations in force.
ATTENTI ON
The unit is not suitable for w orking in salty environm ents. I n such a case protect condenser
and evaporator w ith appropriate m eans.
Only use refrigerant and oil as specified on the serial plate and this manual.
•
No modifications or changes in circuit or components (such as: welding on compressor body, on refrigerant
•
receiver wall or on refrigerant separator wall) are allowed.
Sight glasses, minimum level indicators and flanged couplings are secured to the receiver or the separator by
•
means of demountable fixing elements. As a rule, gaskets resist pressure, temperature and fluid stresses.
When fixing elements include gaskets (for example glass windows and flanges) however, reduced tightness
and bedding of gaskets can not be excluded due to their features; for this reason tighten them before and
possibly after starting. Driving torques can be different. On sight glasses (mounted on refrigerant receiver) use
a dynamometric wrench, otherwise the steel edge could be excessively loaded and cause glass breakage.
•
Any official registration necessary for pressure appliances and repeated tests shall by governed by the laws
and regulations in force in the Country where the unit is installed. Compliance with laws, regulations and with
the technical instructions specified above falls within the manager's responsibility.
•
The final user shall protect the unit from external fire dangers.
Copyright HPL March 2021
Page 7 of 172
P4114S Rev 03
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