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1.3 - Installation safety considerations
After the unit has been received, and before it is started up,
it must be inspected for damage. Check that the refrigerant
circuits are intact, especially that no components or pipes have
shifted or been damaged (e.g. following a shock). If in doubt,
carry out a leak tightness check.
Pressure equipment and components
These products include pressure equipment or components
manufactured by the unit manufacturer or by other
manufacturers. We recommend that you contact your
professional body to find out which regulations affect you as
the operator or owner of pressure equipment or components
(declaration, re-qualification, re-testing, etc.).
The characteristics of this equipment/these components are
given on the name plate or in the regulatory documentation
supplied with the products.
These units comply with the European Pressure Equipment
Directive.
The units are intended to be stored and operated in an
environment where the ambient temperature does not drop
below the minimum allowable temperature indicated on the
nameplate.
Do not introduce significant static or dynamic pressure with
regard to the operating pressures used during operation or for
tests in the refrigerant circuit or in the heat exchange circuits.
NOTE:
Monitoring during operation, re-qualification, re-testing and
re-testing dispensation:
•
Follow regulations on the monitoring of pressure equipment.
•
The user or operator is usually requested to create and
maintain a monitoring and maintenance log.
•
In the absence of any regulations, or in addition to the
regulations, follow the guidance in EN 378.
•
Follow the local professional recommendations, whenever
they exist.
•
Regularly monitor the surface of the components to detect
cavernous corrosion. To do this check an uninsulated part
of the pressure vessel or at a joint in the insulation.
Regularly check for the presence of any impurities (e.g.
sand, grit) in the heat-transfer fluids. These impurities can
cause wear and/or pitting corrosion.
Filter the heat-transfer fluid and carry out internal
inspections as described in EN 378
The reports of the periodical checks by the user or the
operator must be included in the monitoring and
maintenance log.
Repair:
Any repair or modification, including replacement of
removable parts:
•
Must comply with local regulations and must be
performed by qualified operators in accordance with
qualified processes, including changing a wiring harness
conductor,
•
Must be approved by the original manufacturer. Repairs
and modifications which involve a permanent assembly
(welding, soldering, expansion of tubes, etc.) must be
performed by qualified operators following operating
procedures,
•
All modifications and repairs must be listed in the
monitoring and maintenance register,
•
Never attempt to repair or modify a plate heat exchanger.
Recycling:
The pressure equipment can be recycled in whole or in part.
After use they may contain refrigerant vapours and oil residue.
Some parts are painted.
1.4 - Maintenance safety considerations
The manufacturer recommends the following template for the
maintenance log (the table below is only given as a guide and
does not engage the manufacturer's liability).
Intervention
Name of the
Applicable national
Verification
commissioning engineer
regulations
Organisation
Date Nature
(1)
(1) Maintenance, repairs, regular verifications (EN 378), leakage, etc.
Any technician carrying out work on the electrical or
refrigerating section must be authorised, with the relevant
qualifications and certifications, including for brazing
operations and for operation of the shut-off valve. He/she must
have been trained and be familiar with the equipment and the
installation.
The manual valves must only be manipulated when the
machine is off. Do not forget to refit protective caps to prevent
leaks.
Technicians working on the units must be equipped as follows:
Operations
Personal protection
Maintenance,
Welding
equipment (PPE)
(1)
Handling
service
or strong
operations
brazing
(2)
Protective gloves, eye
protection, safety shoe,
X
X
X
protective clothing.
Ear protection.
X
X
Filtering respirator.
X
(1) We recommend following the instructions in EN 378-3.
(2) Performed in the presence of A1 refrigerant according to EN 378-1.
Never work on a unit that is still energised.
Never work on any of the electrical components until the
general power supply to the unit has been isolated and locked
out.
Page 7
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