Carrier Aquaforce 30XA302 Installation, Operation And Maintenance Instructions

Also see for Aquaforce 30XA Series: Installation instructions Operation instructions User guide

Contents

49• Remove the dust and clean the interior of the controlboxes, if required.• Check the presence and the condition of the electricalprotection devices.• Check the correct operation of all heaters.• Replace the fuses every 3 years or every 15000 hours(age-hardening).• Replace the control box cooling fans used with option22 (with designation EF22_) every five years.• Check the height of the anti-vibration mountings(located between the compressor rails and the unitchassis) after 5 years of operation, and then each year.When the total minimum height of the mountings isless than 25 mm replace the mountings.• Check the water connections.• Purge the water circuit.• Clean the water filter.• Fully clean the condensers with a low-pressure jet anda bio-degradable cleaner (counter-current cleaning -see chapter 13.6.2 - “Level 2”).• Replace the stuffing box packing of the pump after10000 hours of operation.• Check the unit operating parameters and comparethem with previous values.• Keep and maintain a maintenance sheet, attached toeach HVAC unit.• Check the correct operation of the capacitor (powerfactor correction option 231).All these operations require strict observation of adequatesafety measures: Individual protection garments, compliancewith all industry regulations, compliance with applicablelocal regulations and using common sense.13.3 - Level 3 (or higher) maintenanceNOTE: Any deviation or non-observation of these mainte-nance criteria will render the guarantee conditions for theHVAC unit null and void, and the manufacturer, CarrierSCS will no longer be held responsible.The maintenance at this level requires specific skills/approval/tools and know-how and only the manufacturer,his representative or authorised agent are permitted tocarry out these operations. These maintenance operationsconcern for example:• A major component replacement (compressor,evapo-rator)• Any intervention on the refrigerant circuit (handlingrefrigerant)• Changing of parameters set at the factory (applicationchange)• Removal or dismantling of the HVAC unit• Any intervention due to a missed established mainte-nance operation• Any intervention covered by the warranty.13 - STANDARD MAINTENANCEAir conditioning equipment must be maintained by profes-sional technicians, whilst routine checks can be carried outlocally by specialised technicians. See the standardEN 378-4.Simple preventive maintenance will allow you to get thebest performance from your HVAC unit:• Improved cooling performance• Reduced power consumption• Prevention of accidental component failure• Prevention of major time-consuming and costlyinter-ventions• Protection of the environment.There are five maintenance levels for HVAC units, asdefined by the AFNOR X60-010 standard.13.1 - Level 1 maintenanceSee note “Any deviation or non-observation ...” in chapter13.3 - “Level 3 (or higher) maintenance”. Simpleprocedure can be carried out by the user:• Visual inspection for oil traces (sign of a refrigerantleak)• Air heat exchanger (condenser) cleaning - see chapter13.6.1 - “Level 1”.• Check for removed protection devices, and badlyclosed doors/covers• Check the unit alarm report when the unit does notwork. Refer to the 30XA/30XAS/30XW Touch Pilotcontrol manual for a more detailed explanation.General visual inspection for any signs of deterioration.13.2 - Level 2 maintenanceSee note “Any deviation or non-observation ...” in the extcolumn. This level requires specific know-how in theelectrical, hydronic and mechanical fields. It is possible thatthese skills are avail-able locally: Existence of amaintenance service, industrial site, specialisedsubcontractor. In these cases, the following maintenanceoperations are recommended.Carry out all level 1 operations, then:• At least once a year tighten the power circuitelectrical connections (see table 13.4).• Check and re-tighten all control/commandconnections, if required (see table 13.4).• Check the differential switches for correct operationevery 6 months (free-cooling option 118A).