Carrier 19PV550 Installation, Operation And Maintenance Instructions

Also see for 19PV550: Control manual

Carrier 19PV550 Installation, Operation And Maintenance Instructions Manual pdf 5 page image

51 - INTRODUCTIONThese pipes must be installed in a way that ensures thatpeople and property are not exposed to refrigerant leaks.These fluids may be diffused in the air, but far away from anybuilding air intake, or they must be discharged in a quantitythat is appropriate for a suitably absorbing environment.It is recommended to install an indicating device to show ifpart of the refrigerant has leaked from the valve.The calibration of a valve that has leaked is generally lowerthan its original calibration. The new calibration may affectthe 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 reliefvalve, to avoid an accumulation of condensate or rain water.Ensure good ventilation, as accumulation of refrigerant in anenclosed space can displace oxygen and cause asphyxiationor explosions.Inhalation of high concentrations of vapour is harmful andmay cause heart irregularities, unconsciousness, or death.Vapour is heavier than air and reduces the amount of oxygenavailable for breathing. These products cause eye and skinirritation. Decomposition products are hazardous.1.2 - Equipment and components under pressureThe units are intended to be stored and operate in an environmentwhere the ambient temperature must not be less than the lowestallowable temperature indicated on the nameplate. See section“11.2 - Pressure vessels”.1.3 - Maintenance safety considerationsThe manufacturer recommends the following drafting for a logbook(the table below should not be considered as reference and doesnot involve manufacturer responsibility):Intervention Name of thecommissioningengineerApplicablenationalregulationsVerificationOrganismDate Nature (1)(1) Maintenance, repairs, regular verifications (EN 378), leakage, etc.Engineers working on the electric or refrigeration componentsmust 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 trainedand be familiar with the equipment and the installation. All weldingoperations must be carried out by qualified specialists.The insulation must be removed and heat generation must belimited by using a wet cloth.Any manipulation (opening or closing) of a shut-off valvemust 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 liquidline valve closed, as liquid refrigerant can be trapped betweenthis valve and the expansion device. (This valve is situatedon the liquid line before the filter drier box.)Equip the engineers that work on the unit as follows:Personal protectionequipment (PPE)(1)OperationsHandling Maintenance,serviceWelding orbrazing(2)Protective gloves,eye protection,safety shoe,protective clothing.X X XEar protection. X XFiltering 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 disconnectedby the main disconnect switch(es).Never work on any of the electrical components, until thegeneral power supply to the unit has been cut at fieldinstallation or using the main supply and the excepteddisconnect switches in the control box.CAUTION:A motor mechanism module is integrated to insure theautomatic main supply disconnect switch closure. If anymaintenance operations are carried out on the unit, lock allthe power supply circuit(s) in the open position.If the work is interrupted, always ensure that all circuits arestill deenergized before resuming the work.CAUTION:Even if the unit has been stopped the power circuit remainsenergized, unless the unit or circuit disconnect switch isopen. Refer to the wiring diagram for further details. Attachappropriate safety labels.CAUTION:The frequency variator drive integrated in the compressor(s)used in 19PV units are equipped with capacitor batteries. Adelay of twenty (20) minutes after disconnecting the power,corresponding to the discharge time, must be observedbefore to remove the compressor(s) input cover.Operating checks:Important information regarding the refrigerant used:• This product contains fluorinated greenhouse gascovered by the Kyoto protocol.Fluid type: R-134AGlobal Warming Potential (GWP): 1430CAUTION:1. Prevent the release of fluorinated gas from the unit. Ensurethat fluorinated gas is never released to the atmosphereduring installation, maintenance or disposal. If a leak offluorinated gas is detected, ensure the leak is stoppedand repaired as quickly as possible.2. Only a qualified service technician is allowed to accessthis 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) mustcomply with the F-Gas Directive (EC) No. 517/2014concerning certain fluorinated greenhouse gases and anyother applicable local legislation.4. The gas recovery for recycling, regeneration or destructionis at customer charge.5. The deliberate gas release is strictly not allowed.6. Contact your local dealer or installer if you have anyquestions.