Installation - Operation - Maintenance manual (IOM) • AIR COOLED CHILLERS & SPLIT UNITS - 0105-E • 62 •
N°
Event
Effect
Risk
Actions to Eliminate the Risk
Information to minimise the
Occurrence of a risk
8A
Unit exposed to extremely
corrosive materials.
Modification of the mechanical
and chemical properties of certain
materials with a risk or corrosion
rupture, pipe bursting, leaks and
cracks.
Partial or complete destruction of
the circuit, liquid/gas/metal parts
could be thrown out of the unit
Protect the units against these types of
products
Indications in the technical IOM
supplied
9A
Unit exposed to explosive
materials.
Risk of explosion or pipe bursting.
Partial or complete destruction of
the circuit, liquid/gas/metal parts
could be thrown out of the unit
Protect the units against these types of
products
Indications in the technical IOM
supplied
10A
Inappropriate Heat Transfer
Fluid
Corrosion, excessive heat
Partial or complete destruction of
the circuit. Leaks
Usual fluids are Water or Water with
Glycol.
Indications in the technical IOM
supplied
11A
Inappropriate refrigerant fluid in
the circuit
Corrosion, excessive heat,
combustion or explosion
Partial or complete destruction of
the circuit, liquid/gas/metal parts
could be thrown out of the unit
Only use the fluid specified on the
unit’s nameplate.
Indications of the refrigerant fluid
on the unit nameplate
12A
Inappropriate oil in the
compressor
Corrosion, excessive heat,
Partial or complete destruction of
the circuit. Leaks
Authorized oils: Refer to the
compressor nameplate or the
documentation.
Indication on the compressor
nameplate or the manufacturer
documentation.
13A
Working on a part under
pressure
Risk of explosion or part bursting
away from the machine.
Liquid/gas/metal parts could be
thrown out of the unit
Isolate the section of the circuit to be
worked on and recover the refrigerant
before any work.
Always wear protection goggles and
gloves.
Indications in the technical IOM
supplied
14A
Brazing or un-brazing parts
from the circuit
Strains, cracks, pipe
bursting
Partial or complete destruction of
the circuit, liquid/gas/metal parts
could be thrown out of the unit
Parts to be brazed using best
engineering practices. Use brazing
materials approved by Lennox. Ensure
the circuit is leak free before refilling
with refrigerant.
Indications in the technical IOM
supplied
15A
Unit exposed to inductive
interferences
Corrosions, cracks
leaks
Ensure the unit is earthed properly
Indications in the technical IOM
supplied
16A
Unit exposed to internal or
external vibrations
Strains, cracks, explosions
Partial or complete destruction of
the circuit, liquid/gas/metal parts
could be thrown out of the unit
Inspect the unit regularly
Indications in the technical IOM
supplied
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