Carrier AquaForce PUREtec 30XW-VZE 451 Installation, Operation And Maintenance Instructions

2711 - STANDARD MAINTENANCEAir conditioning equipment must be maintained by professionaltechnicians, whilst routine checks can be carried out locally byspecialised technicians. See the standard EN 378-4.Simple preventive maintenance will allow you to get the bestperformance from your HVAC unit:- improved cooling performance- reduced power consumption- prevention of accidental component failure- prevention of major time consuming and costly interventions- protection of the environmentThere are five maintenance levels for HVAC units, as defined bythe AFNOR X60-010 standard.11.1 - Level 1 maintenanceSee note below.Simple procedure can be carried out by the user:- Visual inspection for oil traces (sign of a refrigerant leak)- Check for removed protection devices, and badly closeddoors/covers- Check the unit alarm report when the unit does not work (seereport in the SmartVuTM control manual).General visual inspection for any signs of deterioration.11.2 - Level 2 maintenanceThis level requires specific know-how in the electrical, hydraulicand mechanical fields. It is possible that these skills are availablelocally: existence of a maintenance service, industrial site,specialised subcontractor.In these cases, the following maintenance operations arerecommended.Carry out all level 1 operations, then:- At least once a year tighten the power circuit electricalconnections (see tightening torques table).- Check and re-tighten all control/command connections, ifrequired (see tightening torques table).- Check the differential switches for correct operation every 6months.- Remove the dust and clean the interior of the control boxes,if required. Check the filter condition.- Check the presence and the condition of the electricalprotection devices.- Replace the fuses every 3 years or every 15000 hours (age-hardening).- Check the water connections.- Purge the water circuit (see chapter 7 “Water connections”)- Clean the water filter (see chapter 7 “Water connections”).- Check the unit operating parameters and compare them withprevious values.- Keep and maintain a maintenance sheet, attached to eachHVAC unit.All these operations require strict observation of adequate safetymeasures: individual protection garments, compliance with allindustry regulations, compliance with applicable local regulationsand using common sense.11.3 - Level 3 (or higher) maintenanceThe maintenance at this level requires specific skills/ approval/tools and know-how and only the manufacturer, his representativeor authorised agent are permitted to carry out these operations.These maintenance operations concern for example:- A major component replacement (compressor, evaporator)- Any intervention on the refrigerant circuit (handlingrefrigerant)- Changing of parameters set at the factory (application change)- Removal or dismantling of the HVAC unit- Any intervention due to a missed established maintenanceoperation- Any intervention covered by the warrantyNOTE: Any deviation or non-observation of these maintenancecriteria will render the guarantee conditions for the HVAC unitnul and void, and the manufacturer, Carrier France, will nolonger be held responsible11.4 - Tightening of the electrical connections11.4.1 - Tightening torques for the main electricalconnectionsScrew type Designationin the unitTorquevalue, N·mCustomer connectionScrew-nut M12 at phase decks L1/L2/L3 50Nut on earth terminal PE 81Downstream power connections in the control boxScrew M10 at downstream maindisconnect deck (QS10)* L1/L2/L3 50Earth terminal M10 50Power connections in the variator GS-M10 nut on the phase pin 19-40M10 nut on the earth pin 19-40Compressor phase connection terminalsM12 1/2/3/4/5/6on EC- 23M16 1/2/3/4/5/6on EC- 30Compressor earth connection Gnd on EC- 25Control disconnect connectionsUpstream and downstream screws atterminals QF 2ATTENTION: The tightening of the connections at thecompressor terminals requires special precautions. Pleaserefer to the chapter below.