Zehnder Rittling FF-200 Installation, Operation And Maintenance Manual

Zehnder Rittling FF-200 Installation, Operation And Maintenance Manual Manual pdf 37 page image

35Exposed unit touch-upand repaintingExposed cabinet units will be furnishedwith an epoxy powder coated paintfinish. Small scratches in the finishmay be repaired with touch-up spraypaint available from the factory.Proper safety procedures shouldbe followed regarding ventilationand personal safety equipmentwhen using spray paint. Follow themanufacturer’s directions for theproducts being used.To repaint the factory powder coatfinish, prepare the surface by lightlysanding with #280 grit sand paper or#000 or #0000 fine steel wool. Thesurface may also be wiped with aliquid surface etch cleaning product.These items should be availableat most paint product stores. Itshould be noted that the more caretaken during this process, the moreeffective it will be.After this preparation is finished,the factory finish should provideexcellent adhesion for a variety ofair dried top coats. Enamel will givea more durable, higher gloss finish,while latex will not adhere as welland will give a dull, softer finish.Top coats involving an exothermicchemical process between twocomponents such as epoxies andurethanes should be avoided.All standard colors including primercan be painted over. If the installingcontractor chooses not to paint overthe primer color, the factory cannotmatch primer color on future orders,potentially causing color matchissues in the field.Factory touch-up spray paint mayrequire a number of light coats toisolate the factory finish from thequick drying touch-up paint.Start-up generalBefore beginning any start-up, the start-up personnelshould take the time tofamiliarize themselves withthe unit, options, accessoriesand control sequence to fullyunderstand how the unit shouldoperate properly under normalconditions. All personnel shouldhave a good working knowledgeof general start-up procedures.The building must be completelyfinished before attempting tostart-up the equipment, includingdoors, windows and insulation.All internal doors and wallsshould be in place. In somecases, the internal decorationsand furniture may influenceoverall system performance.The entire building should beas complete as possible beforebeginning any system balancing.The initial step is to visuallyinspect all of the equipment,plenums, connecting ductworkand piping. Ensure that allsystems are properly installedand supported and that allconstruction debris or foreignobjects have been removed fromthe equipment.Each unit should be checked for:n Free blower wheel operationn Loose wiresn Loose or missing accesspanels or doorsn Filter installed, clean and of theproper size and typen Drain pan free of debrisn Proper ductwork is attachedn Supply and return grilles are inplace and secureExcept as required during start-up and balancing, no fan coilsshould be operated without allthe proper ductwork attached,supply and return grilles in placeand all the access doors andpanels secured in place.Failure to do so could result indamage to the equipment orbuilding and furnishings and willvoid the manufacturer’s warranty.