Specifications
5
These products incorporate equipment or components under
pressure, manufactured by Carrier or other manufacturers.
We recommend that you consult your appropriate national
trade association or the owner of the equipment or compo-
nents under pressure (declaration, re-qualification, retesting,
etc.). The characteristics of this equipment/these components
are given on the nameplate or in the required documentation,
supplied with the products.
These units comply with the European Pressure Equipment
Directive.
Engineers working on the electric or refrigeration compo-
nents must be authorized, trained and fully qualified to do so.
All refrigerant circuit work must be carried out by a trained
person, fully qualified to work on these units. He must have
been trained and be familiar with the equipment and the
installation. All welding operations must be carried out by
qualified specialists.
Aquasnap Puron units use high-pressure R-410A refrigerant
(the unit operating pressure is above 40 bar, the pressure
at 35°C air temperature is 50% higher than for R-22).
Special equipment must be used when working on the
refrigerant circuit (pressure gauge, charge transfer, etc.).
Any manipulation (opening or closing) of a shut-off valve
must be carried out by a qualified and authorised engineer,
observing applicable standards (e.g. during draining opera-
rations). The unit must be switched off during all operations.
NOTE: The unit must never be left shut down with the
liquid line valve closed, as liquid refrigerant can be trapped
between this valve and the expansion device. This valve is
situated on the liquid line before the filter drier box.
During any handling, maintenance and service operations
the engineers working on the unit must be equipped with
safety gloves, glasses, shoes and protective clothing.
Never work on a unit that is still energized. Never work
on any of the electrical components, until the general
power supply to the unit has been cut.
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.
It is recommended to install an indicating device to show
if part of the refrigerant has leaked from the valve. The
presence of oil at the outlet orifice is a useful indicator that
refrigerant has leaked. Keep this orifice clean to ensure that
any leaks are obvious. The calibration of a valve that has
leaked is generally lower than its original calibration. The
new calibration may affect the operating range. To avoid
nuisance tripping or leaks, replace or re-calibrate the valve.
OPERATING CHECKS:
• IMPORTANT INFORMATION REGARDING
THE REFRIGERANT USED:
This product contains fluorinated greenhouse gas
covered by the Kyoto protocol.
Refrigerant type: R410A
Global Warming Potential (GWP): 1975
Periodic inspections for refrigerant leaks may be
required depending on European or local legislation.
Please contact your local dealer for more information.
• During the life-time of the system, inspection and tests
must be carried out in accordance with national
regulations.
Safety device checks (annex C6 – EN378-2):
• The safety devices must be checked on site once a year
(high-pressure switches), and every five years for
external overpressure devices (safety valves).
• Check manual “30RB/RQ Pro-Dialog Plus control”
for a detailed explanation of the high-pressure switch
test method.
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.
Regularly carry out leak tests and immediately repair any
leaks.
Ensure regularly that the vibration levels remain accept-
able 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 equipment failures, following
a procedure such as the one described in NFE 29-795 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 result-
ing corrosion on the internal walls and on non-protected
steel surfaces.
All installation parts must be maintained by the personnel
in charge, in order to avoid deterioration and injury. Faults
and leaks must be repaired immediately. The authorized
technician must have the responsibility to repair the fault
immediately. Each time repairs have been carried out to the
unit, the operation of the safety devices must be re-checked.