Carrier 19PV550, Installation, Operation And Maintenance Instructions

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1 - INTRODUCTION
These pipes must be installed in a way that ensures that
people and property are not exposed to refrigerant leaks.
These fluids may be diffused in the air, but far away from any
building air intake, or they must be discharged in a quantity
that is appropriate for a suitably absorbing environment.
It is recommended to install an indicating device to show if
part of the refrigerant has leaked from the valve.
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 a nuisance tripping or leaks,
replace or re-calibrate the valve.
Periodic check of the relief valves: See paragraph 1.3
“Maintenance safety considerations”.
Provide a drain in the discharge circuit, close to each relief
valve, to avoid an accumulation of condensate or rain water.
Ensure good ventilation, as accumulation of refrigerant in an
enclosed space can displace oxygen and cause asphyxiation
or explosions.
Inhalation of high concentrations of vapour is harmful and
may cause heart irregularities, unconsciousness, or death.
Vapour is heavier than air and reduces the amount of oxygen
available for breathing. These products cause eye and skin
irritation. Decomposition products are hazardous.
1.2 - Equipment and components under pressure
The units are intended to be stored and operate in an environment
where the ambient temperature must not be less than the lowest
allowable temperature indicated on the nameplate. See section
“11.2 - Pressure vessels”.
1.3 - Maintenance safety considerations
The manufacturer recommends the following drafting for a logbook
(the table below should not be considered as reference and does
not involve manufacturer responsibility):
Intervention
Name of the
commissioning
engineer
Applicable
national
regulations
Verification
Organism
Date Nature
(1)
(1) Maintenance, repairs, regular verifications (EN 378), leakage, etc.
Engineers working on the electric or refrigeration components
must be authorized, trained and fully qualified to do so.
All refrigerant circuit repairs 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.
The insulation must be removed and heat generation must be
limited by using a wet cloth.
Any manipulation (opening or closing) of a shut-off valve
must be carried out by a qualified and authorised engineer.
These procedures must be carried out with the unit shut-
down.
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.)
Equip the engineers that work on the unit as follows:
Personal protection
equipment (PPE)
(1)
Operations
Handling Maintenance,
service
Welding or
brazing
(2)
Protective gloves,
eye protection,
safety shoe,
protective clothing.
X X X
Ear protection. X X
Filtering respirator. X
(1) We recommend to follow the instructions in EN 378-3.
(2) Performed in the presence of A1 refrigerant according to EN 378-1.
Never work on a unit that is still energized.
CAUTION:
The 19PV units are fitted with electrical circuit not disconnected
by the main disconnect switch(es).
Never work on any of the electrical components, until the
general power supply to the unit has been cut at field
installation or using the main supply and the excepted
disconnect switches in the control box.
CAUTION:
A motor mechanism module is integrated to insure the
automatic main supply disconnect switch closure. If any
maintenance operations are carried out on the unit, lock all
the power supply circuit(s) in the open position.
If the work is interrupted, always ensure that all circuits are
still deenergized before resuming the work.
CAUTION:
Even if the unit has been stopped 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.
CAUTION:
The frequency variator drive integrated in the compressor(s)
used in 19PV units are equipped with capacitor batteries. A
delay of twenty (20) minutes after disconnecting the power,
corresponding to the discharge time, must be observed
before to remove the compressor(s) input cover.
Operating checks:
Important information regarding the refrigerant used:
• This product contains fluorinated greenhouse gas
covered by the Kyoto protocol.
Fluid type: R-134A
Global Warming Potential (GWP): 1430
CAUTION:
1. Prevent the release of fluorinated gas from the unit. Ensure
that fluorinated gas is never released to the atmosphere
during installation, maintenance or disposal. If a leak of
fluorinated gas is detected, ensure the leak is stopped
and repaired as quickly as possible.
2. Only a qualified service technician is allowed to access
this product and to correct the fault.
3. Any handling of fluorinated gas contained in this product
(e.g. removing the charge or topping up the gas) must
comply with the F-Gas Directive (EC) No. 517/2014
concerning certain fluorinated greenhouse gases and any
other applicable local legislation.
4. The gas recovery for recycling, regeneration or destruction
is at customer charge.
5. The deliberate gas release is strictly not allowed.
6. Contact your local dealer or installer if you have any
questions.