Compressor And Refrigeration System Requirements; General Operation Requirements - Bitzer ORBIT 6 Operating Instructions Manual

tions according to the UL standard or in units according
to EN/IEC60335 standards.
Information
When using a flammable refrigerant:
Affix the warning sign "Warning: flammable ma-
terials" (W021 according to ISO7010) well vis-
ibly to the compressor. An adhesive label show-
ing this warning sign is enclosed with the Oper-
ating Instructions.
The combustion of refrigerant in the compressor's ter-
minal box can only happen when several very rare er-
rors occur simultaneously. The probability of this event
occurring is extremely low. Combustion of fluorine-
based refrigerants can release lethal amounts of toxic
gases.
DANGER
Life-threatening exhaust gases and residues of
combustion!
Sufficiently ventilate the machinery room for at
least 2 hours.
Never inhale combustion products.
Use appropriate, acid-resistant gloves.
In case of suspected burnt refrigerant in the terminal
box of the compressor:
Do not enter the place of installation and ventilate it for
at least 2 hours. Do not enter the place of installation
until the combustion gases have completely escaped.
Never inhale combustion products. The potentially toxic
and corrosive exhaust air must be released into the at-
mosphere. It is necessary to use suitable, acid-resistant
gloves. Do not touch moist residues, but allow them to
dry, because they may contain dissolved toxic sub-
stances. Have trained staff clean the parts concerned
or, if the parts are corroded, dispose of them properly.
3.3.1 Compressor and refrigeration system
requirements
The specifications are established in standards (e.g.
EN378). In view of the high requirements and product
liability, it is generally recommended to carry out the
risk assessment in cooperation with a notified body.
Depending on the design and the refrigerant charge, an
assessment according to EU Framework Directives
2014/34/EU and 1999/92/EC (ATEX 137) may be ne-
cessary.
ESB-130-8
DANGER
Fire hazard in the event of refrigerant leakage
and in the presence of an ignition source!
Avoid open fire and ignition sources in the en-
gine room and in the hazardous zone!
▶ Pay attention to the ignition point in air of the refri-
gerant used, see also EN378-1.
▶ Vent engine room according to EN378 or install an
extraction device.
▶ To open the pipelines, use only pipe cutters and no
open flame!
▶ Install components from which refrigerant may leak
(e.g. low and high pressure limiter or low and high
pressure cut-out) only outside the switch cabinet!
If the following safety regulations and adaptations are
observed, the standard compressors can be run with
refrigerants mentioned above of the A2L safety group.
• Observe the max. refrigerant charge according to the
installation place and the installation zone! See
EN378-1 and local regulations.
• No operation in the vacuum range! Install safety
devices for protection against insufficient and ex-
cessive pressure and make sure that they are de-
signed in accordance with the requirements of the
safety regulations (e.g. EN378-2).
• Avoid air penetration in the system – also during and
after maintenance work!
3.3.2

General operation requirements

Operation of the system and personal protection are
usually subject to national regulations on product
safety, operational reliability and accident prevention.
This requires separate agreements to be made
between the system manufacturer and the end user.
Implementation of the required risk assessment for in-
stallation and operation of the system is the responsibil-
ity of the end user. To this end, cooperation with a noti-
fied body is recommended.
To open the pipes, use only pipe cutters; do not use an
open flame.
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