Carrier 19PV550 Installation, Operation And Maintenance Instructions

Also see for 19PV550: Control manual

Carrier 19PV550 Installation, Operation And Maintenance Instructions Manual pdf 29 page image

2913 - 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.13.1 - Level 1 maintenanceSee note below.Simple procedure can be carried out by the user:- Air heat exchanger (condenser) cleaning - see chapter“Condenser coil - level 1”- Check for removed protection devices, and badly closeddoors/covers- Check the unit alarm report when the unit does not work (seereport in the 19PV Touch'Pilot Control instruction manual ).General visual inspection for any signs of deterioration.13.2 - Level 2 maintenanceSee note below.This 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).- Replace the control box cooling fans (if used) every five years.- 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.- Replace compressor capacitors every 10 years (if energized)or 5 years (if de-energized).- Replace compressor soft start fan every 5 years.- 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.13.3 - Level 3 (or higher) maintenanceSee note below.The 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 (handling refrigerant)- Changing of parameters set at the factory (applicationchange)- 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, will no longer be heldresponsible.13.4 - Tightening of the electrical connections13.4.1 - Tightening torques for the main electricalconnectionsComponent Designationin the unitvalue(N·m)Screw on bus bar and PE, customer connectionM6 L1/L2/L3 9,6M8 L1/L2/L3 24M10 L1/L2/L3 49M12 L1/L2/L3 79,4Screw on Main supply disconnect switchQS10* 28Screw on Control supply disconnect switchQS10*A 1,7Screw on Line reactorLine reactor for TT300 - M8 Z* 24Line reactor for TT350 - M10 Z* 49Screw on EMC FilterPE ZC* 16 (+/- 1)Phases ZC* 15Screw on Fast acting fuse connectionFU* 38Screw on TT300 bar connectionL1/L2/L3 25Screw on PE panelsM8 PE 24Screw on Compressor connectionTT300 - Cap L1/L2/L3 31TT300 - M8 PE 21,7TT350 - M10 L1/L2/L3 21,7TT350 - M8 PE 21,7Control disconnect switch connectionUpstream and downstream screws at terminals QF10* &QM10** 2Power supply 24VDC unitUpstream and downstream screws at terminals VC* 0,5