Installation - Operation - Maintenance manual (IOM)
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AIR COOLED CHILLERS & SPLIT UNITS - 0105-E
• 61 •
RISK ANALYSIS AND HAZARDOUS SITUATIONS ACCORDING TO 97/23/CE DIRECTIVE
N°
Event
Effect
Risk
Actions to Eliminate the Risk
Information to minimise the
Occurrence of a risk
1A
Violent Chocks, Static or
Dynamic Loads applied
Appearance of cracks, distortions,
possibility of rupture
Leaks, liquid or gas projections,
Metal parts projections.
Only handling the units using the
chassis and lifting rings if available.
Handling procedure shown in the
IOM supplied with the unit.
2A
Unit not installed properly or
leveled to the ground
Unusual stress in the frame
leading to possible and strains
vibrations and cracks
Leaks
Level the machine during
commissioning. In the case where the
unit is installed on anti-vibration
mountings, all supporting points must
be used and the block hardness must
be selected according to the type of
units being installed.
Indications on general mechanical
drawings in the technical guide
and the IOM supplied with the
unit.
3A
Unsuited hydraulic or
refrigeration pipe-work
Unusual stress on the pipe-work
leading to possible and strains
vibrations and cracks
Leaks
Proper support and fitting of the pipe-
work on site.
Indications in the technical IOM
supplied with the unit.
4A
Outdoor temperature below
freezing
Strains, vibrations and cracks,
pipe bursting.
Partial or complete destruction of
the circuit, liquid/gas could be
thrown out of the unit
Provide anti-frost protection (ei: Water
treated with Glycol, or trace heaters
along the pipe-work)
Indications in the technical IOM
supplied with the unit.
5A
Circuits exposed to an unusual
heat source.
Modification of the mechanical
properties of certain materials with
a risk or rupture or pipe bursting,
leaks or cracks appearing.
Partial or complete destruction of
the circuit, liquid/gas could be
thrown out of the unit
Recommended minimum and
maximum outdoor temperature–20°C
to 50°C during operation.
–30°C to 65°C during storage
Do not expose any part of the machine
to a naked flame
Indications of the Min and Max
outdoor temperature on the unit
nameplate
6A
Unusual increase in the
temperature of the Chilled
water return to the evaporator
or the hot return water to the
condenser
Increase of the refrigerant
pressure in the heat exchanger
with a risk of exceeding the
working pressure leading to
possible strains, vibrations, cracks
and pipe or vessel bursting.
Partial or complete destruction of
the circuit, liquid/gas/metal parts
could be thrown out of the unit
Maximum chilled water return
temperature: 45°C
Maximum hot return water
temperature: 50°C
Install a temperature limitation device
Indications in the technical IOM
supplied with the unit.
7A
Possibility of a unit being hit by
lightning
Extreme heat, explosion, cracks.
Partial or complete destruction of
the circuit, liquid/gas/metal parts
could be thrown out of the unit
Provide an appropriate protection
against lightning.
Indications in the technical IOM
supplied
