5 years - Sill Lighting

Maintenance InstructionsThe illuminance for a room/propertymust satisfy the obligatory entriesaccording to 12464-1 over the entireperiod of usage; this corresponds tothe maintenance value. The electricalplanner is responsible for optimallydetermining the maintenance factordependent upon the lighting systemand the spatial conditions used andensuring this with amaintenance schedule.Maintenance FactorMF = LLMF x LSF x LMF x RMFLLMF - Lamp lumen maintenancefactorLSF - Lamp lifetime factorLMF - Lamp maintenance factorRMF - Room maintenance factorThe necessary illuminance of a newsystem results when the maintenancevalue is divided by the maintenancefactor. An optimal lighting system isdistinguished by a relatively high maintenancefactor and results in savingsin investment costs, in energy consumptionand in CO 2 emissions. It alsoensures a high level of lighting comfortover the entire service life.What possibilities do consultants andusers have to positively influence themaintenance factor:- RMF Room maintenance factorbright rooms cleaned at regularintervals, or painted in such a waythat they have a high reflectioncoefficient over a long period arethe basis for a high room surfacemaintenance factor.- LSF Lamp durability factorwhen defining the immediatereplacement of defective lamps,the maximum value of 1 can beused for this factor.- LLMF Lamp lumen maintenancefactor takes into account the declineof the brightness because of theaging of the lamp or of the LEDmodule.Through the optimal choice of thelights with the appropriate lamps, theconsultant can decisively influencethis value. The selection of illuminantswith a long service life and a lowdecline in brightness reduces thecosts for the procurement ofreplacements and the effort involvedin changing the lamps.- LMF Lamp maintenance factordepending upon the design of a lightand the environmental influences inthe property, contamination canoccur in the course of use, whichresults in reduction of the brightness.The user is responsible forimplementation:- Cleaning of the lights in a de-energisedand cool state with a soft cloth andpH-neutral cleaning agents. Especiallythe cleaning of coverings for theradiation of the indirect light proportion,cleaning of all reflectors, where theyare accessible, in the same way andcleaning of panes and coverings forthe radiation of the direct lightproportion.By selecting lights that can becleaned with low effort and a shortercleaning interval than the usual 3years, a higher luminaire maintenancefactor can be achieved, which has apositive influence on investment andenergy costs, and which results in ahigher degree of environmental compatibilityof the lighting system.The following reference values applyfor lighting systems for which the consultantcan not adequately determinethe potential influence factors concerninga reduction of the illuminance:- Clean room / propertyMaintenance factor 0.8- Normal room / propertyMaintenance factor 0.67- Very dirty room / propertyMaintenance factor 0.5A maintenance factor of 0.5 meansthat an illumination twice that ofEN 12464-1 must be established as anew value for the usage of the recommendedillumination.Note:When creating lighting systems withLED lamps, the planner should determinethe most precise run time of thelamps possible and take the planneduseful life of the system into account;in this way a real value for the lamplumen factor can be defined, whichcan be significantly higher than thevalue of 0.7, which, with reference tothe useful life of 50,000 h, wouldotherwise be used.Luminaire maintenance factorCleaning interval after 1 year after 2 years after 3 yearsAmbience C S P C S P C S PLamp type 0.90 0.86 0.83 0.84 0.8 0.75 0.79 0.74 0.68Above opened reflector 0.80 0.69 0.59 0.74 0.61 0.52 0.74 0.61 0.52Closed reflector 0.88 0.82 0.77 0.83 0.77 0.71 0.79 0.73 0.65Dustproof reflector 0.94 0.90 0.86 0.91 0.86 0.81 0.90 0.84 0.79Indirect luminaire 0.86 0.81 0.74 0.77 0.66 0.57 0.70 0.55 0.45Room maintenance factor,average room sizeCleaning interval after 1 year after 2 years after 3 yearsAmbience C S P C S P C S PType of illuminationdirect 0.98 0.96 0.95 0.96 0.95 0.94 0.96 0.95 0.94direct / indirect 0.92 0.88 0.85 0.89 0.85 0.11 0.86 0.82 0.78indirect 0.88 0.82 0.77 0.84 0.77 0.70 0.78 0.72 0.64Lamp lumen maintenance factorOperating time 1000 h 2000 h 6000 h 10000h 16000 h 20000 h 30000 h 40000 h 50000 hLampLow-voltage Tungsten Halogen 0.98 0.95 x x x x x x xHigh-voltage Tungsten Halogen 0.95 0.91 x x x x x x xTC-TELI 0.97 0.92 0.85 0.83 x x x x xT16 lamp 0.98 0.96 0.94 0.92 0.89 0.88 x x xHIT lamp 0.98 0.97 0.92 0.80 x x x x xLED module 0.99 0.99 0.96 0.92 0.9 0.85 0.80 0.75 0.7Definitions: C - clean room / Object, S - standard room / Object, P - polluted room / Objectwww.wila.com 159