Rev. B 06-2019
41
MTEC.6710.GB-B-1 Operation and maintenance manual HMA/Z series English
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with temperature control
7. MAINTENANCE OF THE UNIT
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Maintenance can:
•
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• Prevent failures
• Increase the equipment life
Starting from 01/01/2016 the new European Regulation 517_2014, “Obligations concerning the containment, use,
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by all operators:
(a) Keeping the equipment records
(b) Correct installation, maintenance and repair of equipment
(c) Leakage control
(d) Refrigerant recovery and disposal management
(e) Presentation to the Ministry of the Environment of the annual declaration concerning the atmospheric emis-
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It is advisable to maintain a record book for the unit which details all operations performed on the unit as this will
facilitate troubleshooting.
Maintenance must be performed in compliance with all requirements of the previous paragraphs.
Use personal protective equipment required by regulations as compressor casings and discharge pipes are at high
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If the unit is not to be used during the winter period, the water contained in the pipes may freeze and cause serious
damage. In this event, fully drain the water from the pipes, checking that all parts of the circuit are empty including
any internal or external traps and siphons.
If it is necessary to replace a component of the machine, both for ordinary and extraordinary maintenance, this
component must have the same or higher characteristics than those present. The same or higher performances or
thicknesses are meant for the characteristics, which do not compromise the safety, the use, the handling, the storage,
the pressures and the temperatures of use of the machine provided by the manufacturer.
The taps in the machine must always be in open position before starting. If it is necessary to disconnect the refrigera-
tion circuit by closing the taps, it is necessary to take precautions to prevent the unit from starting up, even acciden-
tally, and to indicate that the taps have been properly closed with special signs, both on the tap and in the electrical
panel. In any case, the taps must remain closed as less as possible.
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