GE FHV5SGWW Service Manual

Contents

Freezer Model:FHV5SGWW/FHV7SGWW４６MAINTENANCE SERVICE AND TROUBLE SHOOTINGMaintenance Service and Trouble Shooting(1) In semi-sound eliminating room or in sound eliminating room withoutsound wave reflection.(2) Put freezer onto 5-10mm elastic cushion.(3) Freezer must be empty and running at least 30 minutes beforemeasuring. If normal stop happens, please make the measurement 3minutes after freezer starting again.(4) 4 measuring positions are required, they are 1m away from freezer atfront, back, front left, front right respectively. The height is 1/2 of freezer;the instrument is accurate sound level meter (A weighted).12.6.12 What’s the different between national noisestandard 52dB(A) and ministry of light industry standard42dB?Answer: The noise of 52dB(A) in national standard is the sound power level.Under the measuring conditions stipulated in national standard, measurethe freezer noise at four points, take the average of indicated reading atgreater noise situation, calculate the arithmetic average value of the fourpoints. This value is the average sound pressure level of noise, thecalculation formula is:Lw=(LPA-2)+10LgSwhere: LW—sound power level, dBLPA-average sound pressure level of measuring surface, dBS—the envelope area of measuring surface, m2PDF created with pdfFactory trial version www.pdffactory.com