6
The information on operating inspections given in annex
C of standard EN 378 can be used if no similar criteria
exist in the national regulations.
While working in the fan area, especially when grilles or
casings are removed, disconnect the fan power supply to
prevent their automatic restart.
Protection device checks:
•
If no national regulations exist, check the protection
devices on site in accordance with standard EN 378:
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 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 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 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).
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, purge 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.
Plug all openings whenever the refrigerant circuit is opened
for up to one day. For longer openings place a nitrogen
charge in the circuit.
Units with option 231 are equipped with capacitor
batteries with a discharge time of five (5) minutes after
disconnecting the power. After disconnecting the power to
the control box, wait five minutes before opening the
control box. Before any intervention, verify that there is no
voltage present at any accessible conducting parts of the
power circuit.
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
leakage detection
No
check
12 months
6 months
3 months
System WITH leakage
detection
No
check
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’s :
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.
Summary of Contents for Aquaforce 30XA Series
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