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1 - INTRODUCTION
Operating checks:
Important information regarding the refrigerant used:
This product contains fluorinated greenhouse gas covered
by the Kyoto protocol.
Fluid type: R407C
Global Warming Potential (GWP): 1774
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
No Check
leakage detection
System WITH
No Check
leakage detection
Refrigerant charge/
circuit (CO
< 5 Tons
2
equivalent)
R134A
Charge <
(GWP
3,5 kg
1430)
R407C
Charge <
(GWP
Refrigerant
2,8 kg
1774)
charge/
Circuit (kg)
R410A
Charge <
(GWP
2,4 kg
2088)
HFO's :
R1234ze
(1) From 01/01/2017, units must be equipped with a leakage detection system
12 Months
6 Months 3 Months
24 Months 12 Months 6 Months
50 ≤
Charge >
5 ≤ charge
charge <
500
< 50 Tons
500 Tons
Tons
3,5 ≤
34,9 ≤
Charge >
charge <
charge <
349,7 kg
34,9 kg
349,7 kg
2,8 ≤
28,2 ≤
Charge >
charge <
charge <
281,9 kg
28,2 kg
281,9 kg
2,4 ≤
23,9 ≤
charge >
charge <
charge <
239,5 kg
23,9 kg
239,5 kg
No requirement
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.
Protection device checks:
- If no national regulations exist, check the protection
devices on site in accordance with standard EN378: once
a year for the high-pressure switches, every five years for
external relief valve.
The company or organisation that conducts a pressure switch test
shall establish and implement a detailed procedure to fix :
- Safety measures
- Measuring equipment calibration
- Validating operation of protective devices
- Test protocols
- Recommissioning of the equipment..
Consult Carrier Service for this type of test. Carrier mentions here
only the principle of a test without removing the pressure switch:
- Verify and and record the set-points of pressure switches
and relief devices (valves and possible rupture discs)
- Be ready to switch-off the main disconnect switch of the power
- supply if the pressure switch does not trigger (avoid
overpressure or excess gas in case of valves on the high-
pressure side with the recovery condensers)
- 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).
(1)
If the machine operates in a corrosive environment, inspect
the protection devices more frequently. Regularly carry out
leak tests and immediately repair any leaks.
Ensure regularly that the vibration levels remain acceptable
and close to those at the initial unit start-up. Before opening
a refrigerant circuit, transfer the refrigerant to bottles
specifically provided for this purpose and consult the
pressure gauges.
Change the refrigerant after an equipment failure, following
a procedure such as the one described in NF E29-795 or carry
out a refrigerant analysis in a specialist laboratory.
If the refrigerant circuit remains open for longer than a day
after an intervention (such as a component replacement), the
openings must be plugged and the circuit must be charged
with nitrogen (inertia principle). The objective is to prevent
penetration of atmospheric humidity and the corrosion on
the unprotected internal steel walls.
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