Huber MPC RotaCool, Руководство по эксплуатации

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Introduction
OPERATION MANUAL Chapter 1
RotaCool®
V2.3.0en/04.08.21//1.30
16
1.4.1.2 Temperature control unit with natural refrigerants (NR)
Over 8 g refrigerant per m³ room air
DEATH OR SERIOUS INJURY DUE TO EXPLOSION

Observe the rating plate (amount of natural refrigerant contained) and the room size (maxi-
mum room concentration of natural refrigerant in case of leakage) when installing the temper-
ature control unit.

Over 8 g refrigerant per m³ room air: A gas warning sensor must be fitted and functioning.

The gas warning sensor must be calibrated and maintained at regular intervals (between 6 and
12 months).

The temperature control unit is not approved for operation
in an ATEX zone
.
Huber products with natural refrigerants work with numerous proven, safe and highly-sustainable
technologies. The relevant standards and regulations for temperature control units with natural
refrigerants contain a number of stipulations, the importance of complying with which is set out
below. Please additionally: → Page 14, section
»Proper operation«
.
Huber temperature control units are constructed to be permanently sealed and are carefully
checked for leak tightness. Temperature control units with more than 150 g natural refrigerant are
equipped with an additional gas warning sensor.
For the filling capacity of the temperature control unit, refer to the data sheet. → From page 50,
section
»Annex«
. Or to the rating plate on the back of the temperature control unit. Please also
consider: → Page 23, section
»Ambient conditions«
and → Page 25, section
»Installation condi-
tions« .
Class of
application
field
Application field
Example of the installation
location
Max.
quantity of
refrigerant
AND
Max. permissible
quantity above
ground level (GL)
A General
Publicly accessible area in a
public building
8 g/m
3
ambient air
1.5 kg
B Monitored Laboratories 2.5 kg
C
Access only for
authorized
persons
Production equipment 10.0 kg
Temperature control units with more than 1 kg refrigerant must not be installed below ground level (GL).
Temperature control units with up to 150 g natural refrigerant
▪
The temperature control unit has been constructed to the requirements of EU and EFTA coun-
tries.
▪ Use the table as guidance for classifying the application field. Respect the max. refrigerant quanti-
ty stated therein.
Temperature control units with more than 150 g natural refrigerant
▪
The temperature control unit has been constructed to the requirements of EU and EFTA coun-
tries.
▪ Use the table as guidance for classifying the application field. Respect the max. refrigerant quanti-
ty or the permissible highest quantity above ground level (GL) stated therein.
▪ For more information about the pre-installed gas detection sensor:
- The built-in gas detection sensor enables a
safety shutdown at 20% of the lower explosive
limit via a power disconnect relay that is to be installed by the responsible body
. The
temperature control unit is thus switched off early and safely in case of fault.
- A 24 V DC external power supply must be available for the pre-installed gas warning sen-
sor. The alarm output of the gas warning sensor uses a 4 - 20 mA signal. Please refer to the
data sheet of the gas warning sensor for further technical information. A separate pro-
cessing unit is available as an accessory for the control of the power disconnect relay. The
processing unit provides a potential-free switching contact and simultaneously provides
the power supply and analysis of the gas warning sensor. Both variants require the respon-
Classifying the applica-
tion field