6
CAUTION: If refrigerant circuit service valves are installed, ensure
the protective caps are fitted in order to avoid leakages.
OPERATING CHECKS:
• IMPORTANT INFORMATION REGARDING THE
REFRIGERANT USED:
This product contains fluorinated greenhouse gas covered by
the Kyoto protocol.
Refrigerant type: R-410A
Global Warming Potential (GWP): 2088
CAUTION:
1.
Any intervention on the refrigerant circuit of this product should
be performed in accordance with the applicable legislation.
In the EU, the regulation is called F-Gas, N°517/2014.
2. Ensure that the refrigerant is never released to the atmosphere
during installation, maintenance or equipment disposal.
3. The deliberate gas release into the atmosphere is not allowed.
4. If a refrigerant leak is detected, ensure that it is stopped and
repaired as quickly as possible.
5.
Only a qualified and certified personnel can perform installation
operations, maintenance, refrigerant circuit leak test as well
as the equipment disposal and the refrigerant recovering.
6. The gas recovery for recycling, regeneration or destruction is
at customer charge.
7.
Periodic leak tests have to be carried out by the customer or by
third parties. The EU regulation set the periodicity here after:
System WITHOUT leakage
detection
No
verification
12 months 6 months
3 months
System WITH leakage
detection
No
verification
24 months 12 months
6 months
Refrigerant charge/circuit
(CO
2
equivalent)
< 5 tonnes
5 ≤ charge <
50 tonnes
50 ≤ charge <
500 tonnes
Charge >
500 tonnes*
Refrigerant
charge/circuit
(kg)
R134A
(GWP 1430)
Charge <
3.5 kg
3.5 ≤ charge
< 34.9 kg
34.9 ≤ charge
< 349.7 kg
Charge >
349.7 kg
R407C
(GWP 1774)
Charge <
2.8 kg
2.8 ≤ charge
< 28.2 kg
28.2 ≤ charge
< 281.9 kg
Charge >
281.9 kg
R410A
(GWP 2088)
Charge <
2.4 kg
2.4 ≤ charge
< 23.9 kg
23.9 ≤ charge
< 239.5 kg
Charge >
239.5 kg
HFO:
R1234ze
No requirement
* From 01/01/2017, units must be equipped with a leakage detection system.
8. A logbook must be established for equipments subject to
periodic leak tests. It should contain the quantity and the
type of fluid present within the installation (added and
recovered), the quantity of recycled fluid, regenerated or
destroyed, the date and output of the leak test, the designation
of the operator and its belonging company, etc.
9. Contact your local dealer or installer if you have any
questions.
PROTECTIVE DEVICE CHECKS:
• If no national regulations exist, check the protective devices
on site in accordance with standard EN378: once a year
for the high pressure switches, every five years for external
relief valves.
The company or organisation that conducts a pressure switch
test must establish and implement detailed procedures for:
-
Safety measures,
-
Measuring equipment,
-
Values and tolerances for cut-off and discharge devices,
-
Test stages,
-
Recommissioning of the equipment.
Please contact Carrier Service for this type of test. The test
principle set out here by Carrier does not involve removal of the
pressure switch:
-
Verify and record the nominal values for activation of the
pressure switches and external relief devices (pressure
relief valves or rupture discs),
-
Be ready to switch off the main disconnect switch of
the power supply if the pressure switch does not trigger
(avoid over-pressure or excess gas if there are valves
on the high pressure side on the recovery air
exchangers, for example),
-
Connect a pressure gauge protected against pulsations
(filled with oil with maximum pointer if mechanical),
preferably calibrated (the values displayed on the user
interface may be inaccurate in an instant reading
because of the scanning delay applied in the control)
-
Complete an HP Test as provided by the software
(refer to the Control IOM for details).
CAUTION: If the test results in the replacement of the pressure
switch, it is necessary to recover the refrigerant charge; these
pressure switches are not installed on Schrader type automatic
valves.
Visually inspect the protective devices (relief valves, pressure
switches) at least once a year.
If the machine operates in a corrosive atmosphere, inspect the
devices more frequently.
Check regularly for leaks and, if detected, have these repaired
immediately.
Regularly check that the vibration levels remain acceptable and
close to those at the initial machine start-up.
Before opening a refrigerant circuit, drain and consult the
pressure indicators.
After an equipment failure, replace the refrigerant in accordance
with a procedure such as that described in NF E29-795, or have
a refrigerant analysis carried out at a specialist laboratory.
If the refrigerant circuit remains open after an intervention
(such as a component replacement, etc.):
•
Seal the openings if the duration is less than a day;
•
If more than one day, charge the circuit with a dry, inert
gas (e.g. nitrogen)
The objective is to prevent penetration of atmospheric humidity
and the resulting corrosion of the unprotected internal steel
walls.
1.5 - Repair safety considerations
All parts of the system must be maintained by the personnel
responsible for such maintenance, in order to avoid any damage
or accidents. Faults and leaks must be repaired immediately. An
authorised technician must remedy the fault immediately. After
each repair of the unit, check the operation of all protective
devices and record operating readings for all parameters.
Comply with the regulations and recommendations given in the
safety standards for refrigerant systems and machines, such as:
EN 378, ISO 5149, etc.
If a leak occurs or if the refrigerant becomes contaminated (e.g.