Carrier 30XW Installation, Operation And Maintenance Instructions

Also see for 30XW: Operation instructions User guide Installation, operation and maintenance instructions

Contents

Carrier 30XW Installation, Operation And Maintenance Instructions Manual pdf 4 page image

41 - INTRODUCTIONThe 30XW Aquaforce units are designed to cool water forthe air conditioning of buildings and industrial procsses.Prior to the initial start-up of the 30XW units, the peopleinvolved in the on-site installation, start-up, operation, andmaintenance of this unit should be thoroughly familiar withthese instructions and the specific project data for theinstallation site.The 30XW liquid chillers are designed to provide a very highlevel of safety during installation, start-up, operation andmaintenance. They will provide safe and reliable servicewhen operated within their application range.They are designed for an operating life of 15 years byassuming a 75% utilisation factor; that is approximately100,000 operating hours.This manual provides the necessary information to fami-liarize yourself with the control system before performingstart-up procedures. The procedures in this manual arearranged in the sequence required for machine installation,start-up, operation and maintenance.Always ensure that all required safety measures are followed,including those in this document, such as: wearing protec-tive clothing (gloves, safety glasses and shoes) using appro-priate tools, employing qualified and skilled technicians(electricians, refrigeration engineers) and following localregulations.To find out, if these products comply with Europeandirectives (machine safety, low voltage, electromagneticcompatibility, equipment under pressure etc.) check thedeclarations of conformity for these products.1.1 - Installation safety considerationsAccess to the unit must be reserved to authorised personnel,qualified and trained in monitoring and maintenance. Theaccess limitation device must be installed by the customer(e.g. cut-off, enclosure).After the unit has been received, when it is ready to beinstalled or reinstalled, and before it is started up, it must beinspected for damage. Check that the refrigerant circuit(s)is (are) intact, especially that no components or pipes haveshifted (e.g. following a shock). If in doubt, carry out a leaktightness check and verify with the manufacturer that thecircuit integrity has not been impaired. If damage is detectedupon receipt, immediately file a claim with the shippingcompany.Carrier strongly recommends employing a specialisedcompany to unload the machine.It is compulsory to wear personal protection equipment.Do not remove the skid or the packaging until the unit isin its final position. These units can be moved with a forklift truck, as long as the forks are positioned in the rightplace and direction on the unit.The units can also be lifted with slings, using only thedesignated lifting points marked on the unit.Use slings or lifting beams with the correct capacity, andalways follow the lifting instructions on the certifieddrawings supplied with the unit. Do not tilt the unit morethan 15°.Safety is only guaranteed, if these instructions are carefullyfollowed. If this is not the case, there is a risk of materialdeterioration and injuries to personnel.Never cover any protection devices.This applies to the relief valves (if used) in the refrigerantor heat transfer medium circuits, the fuse plugs and thepressure switches.Ensure that the valves are correctly installed, beforeoperating the unit.Classification and controlIn accordance with the Pressure Equipment Directive andnational usage monitoring regulations in the EuropeanUnion the protection devices for these machines areclassified as follows:Safetyaccessories(1)Over pressure protection incase of an external fire(2)Refrigerant SideHigh pressure switch xExternal relief valve (3) xRupture disk xFuse plug xHeat transfert lfuid sideExternal relief valve (4) (4)(1) Classified for protection in normal service situations.(2) Classified for protection in abnormal service situations. These accessories aresized for fires with a thermal flow of 10kW/m². No combustible matter shouldbe placed within 6.5m of the unit.(3) The instantaneous over-pressure limitation of 10% of the operating pressuredoes not apply to this abnormal service situation.The control pressure can be higher than the service pressure. In this caseeither the design temperature or the high-pressure switch ensures that theservice pressure is not exceeded in normal service situations.(4) The selection of these discharge valves must be made by the personnelresponsible for completing the hydraulic installation.If the relief valves are installed on a change-over valve,this is equipped with a relief valve on each of the twooutlets. Only one of the two relief valves is in operation,the other one is isolated. Never leave the change-overvalve in the intermediate position, i.e. with both waysopen bring the actuator in abutment, front or backaccording to the outlet to isolate. If a relief valve isremoved for checking or replacement please ensure thatthere is always an active relief valve on each of thechange-over valves installed in the unit.All factory-installed relief valves are lead-sealed to preventany calibration change.The external relief valves and the fuses are designed andinstalled to ensure damage limitation in case of a fire.In accordance with the regulations applied for the design,the European directive on equipment under pressure and