Carrier 30XW Installation, Operation And Maintenance Instructions page 6

If any maintenance operations are carried out on the unit,
lock the power supply circuit in the open position ahead
of the machine.
If the work is interrupted, always ensure that all circuits
are still deenergized before resuming the work.
ATTENTION: Even if the unit has been switched off, the
power circuit remains energized, unless the unit or circuit
disconnect switch is open. Refer to the wiring diagram for
further details. Attach appropriate safety labels.
Operating checks:
IMPORTANT INFORMATION REGARDING THE
REFRIGERANT USED:
• This product contains fluorinated greenhouse gas
covered by the Kyoto protocol
Fluid type: R134a
Global Warming Potential (GWP): 1430
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 leakage
No check
detection
Refrigerant charge/circuit
< 5 tons
(CO equivalent)
2
R134A Charge <
(GWP 1430) 3.5 kg
R407C Charge <
Refrigerant
(GWP 1774) 2.8 kg
charge/
Circuit (kg)
R410A Charge <
(GWP 2088) 2.4 kg
HFO's:
No requirement
R1234ze
* 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.
6
12 months 6 months 3 months
24 months 12 months 6 months
5 ≤ charge < 50 ≤ charge Charge >
50 tons < 500 tons 500 tons*
34.9 ≤
3.5 ≤ charge Charge >
charge <
< 34.9 kg 349.7 kg
349.7 kg
28.2 ≤
2.8 ≤ charge Charge >
charge <
< 28.2 kg 281.9 kg
281.9 kg
23.9 ≤
2.4 ≤ charge Charge >
charge <
< 23.9 kg 239.5 kg
239.5 kg
9. Contact your local dealer or installer if you have any
questions.
• During the life-time of the system, inspection and tests
must be carried out in accordance with national
regulations.
Protection device checks (EN 378):
The safety devices must be checked on site once a year for
safety devices (see chapter 11.3 - High-pressure safety
switch), and every five years for external overpressure
devices (external relief valves).
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 over-pressure or excess gas in
case of valves on the high-pressure side with the
recovery condensers)
- Connect a calibrated pressure gauge (the values
displayed on the user interface may be inaccurate
in an instant reading because of the scanning
delay applied in the control)
- Neutralise the HP soft value
- Cut the condenser water flow
- Check the cut-off value
- Reactivate HP soft value
- Reactivate manually HP switch.
CAUTION: If the test leads to replacing the pressure
switch, it is necessary to recover the refrigerant charge,
these pressure switches are not installed on automatic
valves (Schraeder type).
At least once a year thoroughly inspect the protection
devices (valves). If the machine operates in a corrosive
environment, inspect the protection devices more frequently.
Ensure regularly that the vibration levels remain accep-
table and close to those at the initial unit start-up.
Before opening a refrigerant circuit, purge and consult the
pressure gauges.
Change the refrigerant when there are equipment failures,
following a procedure such as the one described in
NF E29-795 or carry out a refrigerant analysis in a
specialist laboratory.