Safety
5
© Lutz-Jesco GmbH 2021
Subject to technical changes.
210527
BA-22404-02-V03
Chlorine changeover unit
C 7520
Operating instructions
2 Safety
2.1 General warnings
The following warnings are intended to help you eliminate the dangers
that can arise while handling the device. Risk prevention measures al-
ways apply regardless of any specific action.
Safety instructions warning against risks arising from specific activities
or situations can be found in the respective sub-chapters.
DANGER
Danger to life from chlorine poisoning!
Chlorine is poisonous. In severe cases, breathing in chlorine may lead
to death. It irritates the eyes, the respiratory system and the skin.
ð
Use sufficient personal protective equipment.
ð
When carrying out any work on the system, use a respirator mask
with a Type B gas filter that complies with EN 14387.
ð
Always comply with the accident prevention regulations that apply
at the place of use.
ð
Get rid of leaks without delay. You must get rid of even very minor
leaks without delay. Together with the humidity, chlorine forms hy-
drochloric acid and corrosion results in rapidly increasing leakage.
ð
Use only chlorine-resistant seals.
ð
Only use seals once. Reusing them leads to leaks.
DANGER
Danger to life from missing safety device.
Chlorinators without gas warning devices are an increased safety risk,
since it is not possible to detect escaping chlorine gas in good time or
at all.
ð
Install a gas warning device.
WARNING!
Increased risk of accidents due to insufficient qualifica-
tion of personnel!
Chlorinators and their accessories must only be installed, operated and
maintained by personnel with sufficient qualifications. Insufficient qual-
ification will increase the risk of accidents.
ð
Ensure that all action is taken only by personnel with sufficient and
corresponding qualifications.
ð
Prevent access to the system for unauthorised persons.
PLEASE NOTE
Damage to the plant due to the formation of hydrochloric
acid
Chlorine gas is highly hygroscopic. This means that humidity enters the
system at any open connection on devices or pipes, which results in the
formation of hydrochloric acid and contamination. thus inevitably caus-
ing damage to the units.
ð
Keep all connections (including in the vacuum system and on all
devices not currently in use) closed at all times.
2.2 Information about chlorine
Chlorine is a hazardous substance. The chemical element chlorine is a
greenish-yellow, toxic gas with a pungent odour, which can be detected
in the air at concentrations below 1 ppm (= 1 ml/m³).
Chlorine is 2.7 times heavier than air and accumulates at ground level.
Chlorine is extremely toxic for water organisms. The reason for the toxici-
ty of chlorine is its extraordinary reactivity. It reacts with animal and veg-
etable tissue and thus destroys it.
Air with a chlorine gas content of 0.5 – 1% leads to a quick death in
mammals and humans, as it attacks the respiratory tract and the pulmo-
nary alveolus (formation of hydrogen chloride or hydrochloride acid).
PLEASE NOTE
Faults due to insufficient chlorine quality
Impurities in the chlorine gas form deposits in devices and valves and
can attack the components chemically. This can lead to malfunctions.
ð
Only use technically pure chlorine that meets the following require-
ments:
- Mass content of chlorine at least 99.5%
- Water content max. 20 mg/kg
Chlorine that complies with EN 937 meets these requirements.
2.3 Hazards due to non-compliance with the safety
instructions
Failure to follow the safety instructions may endanger not only persons,
but also the environment and the device.
The specific consequences can be:
n
Failure of important functions of the device and of the corresponding
system
n
Failure of required maintenance and repair methods
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Danger to persons
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Danger to the environment caused by substances leaking from the
system
