diagenode BioAcc-cool, Operation Manual

Page: 15 / 60

Introduction
Chapter 1 OPERATION MANUAL
V1.1.0en/13.12.12
Errors and omissions excepted. Water Cooler
15
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 quan-
tity or the permissible highest quantity above ground level (GL) stated therein.
Further notes on the pre-installed gas sensor:
a) The integrated gas warning sensor permits a
safety cut-out at 20 % of the lower explosion
threshold via an isolation relay to be installed locally by the user . The temperature control
unit is therefore shut down safely and at an early stage in case of malfunction.
b) For the pre-installed gas warning sensor, you must hold ready an
external power supply of
24 V DC . The gas warning sensor alarm is output using a 4 - 20 mA signal. For further technical
details, please see the data sheet for the gas warning sensor.
Upon request, a separate evaluation unit is available as an accessory for controlling the
isolation relay. The evaluation unit provides a floating switch contact, while also supplying the
voltage and evaluating the gas warning sensor.
Dimensioning and installation by the user are required for both variants. The technical details
required for installation can be found on the data sheet of the gas warning sensor. The gas
warning system alarm can also be routed to a user's alarm control unit. The user is responsible
for this and for any further measures.
c) The user is responsible for
calibrating the gas warning sensor prior to initial start-up and for
maintaining the calibration and maintenance intervals in accordance with the manufacturer's
operating instructions. If no other information is available, we recommend calibration and
maintenance intervals of between 6 and 12 months. Shorter intervals can also be specified to
meet tougher safety requirements. Upon request, we would be happy to propose a specialist
company to carry out the calibration and maintenance work.
1.2.1.2 Temperature control units with 3 to 30 kg fluorinated greenhouse gases/natural refrigerant
F-Gas Directive (EC) No. 842/2006 of the European Parliament and of the Council of 17 May 2006 on
specific fluorinated greenhouse gases.
This directive concerns all systems that contain fluorinated refrigerants. The substances set out in
Directive (EC) No. 1005/ 2009 of the European Parliament and of the Council of 16 September 2009
that deplete the ozone layer are excepted (CFC/HCFC).
The Directive regulates the reduction of emissions, the use, the recovery and the destruction of spe-
cific fluorinated greenhouse gases, as well as the identification and disposal of products and equip-
ment containing these gases. Since 4 July 2007, users must check their stationary refrigeration sys-
tems for leaks on a regular basis and rectify any leaks within the shortest possible time.
Directive (EC) No. 303/2008 contains stipulations on the training and certification of companies and
personnel that are permitted to execute the specified activities.
Obligations of the user:
Annual inspection, for instance, for leaks from stationary refrigeration systems by certified per-
sonnel (e.g. service technicians of Peter Huber Kaeltemaschinenbau GmbH) for a fill quantity of
fluorinated greenhouses from
3 kg to 30 kg .
Obligation to keep records (maintenance and inspection) in the operation manual of the refrig-
eration system, specifying the type and quantity of used or recovered refrigerants, which the user
must retain for at least 5 years after they are produced and present to the competent authority
on demand.
Responsibility of plant users to recover F-gases using certified personnel.
Temperature control units with natural refrigerants (NR) are exempt from this Directive.
The refrigerant quantity is stated on the data sheet or rating plate of your temperature control
unit.