Digital Ground Resistance Tester Model 4620 and 4630 41Repair and CalibrationTo ensure that your instrument meets factory specifications, we recommendthat it be scheduled back to our factory Service Center at one-year intervalsfor recalibration, or as required by other standards or internal procedures.For instrument repair and calibration:You must contact our Service Center for a Customer Service AuthorizationNumber (CSA#). This will ensure that when your instrument arrives, it will betracked and processed promptly. Please write the CSA# on the outside of theshipping container. If the instrument is returned for calibration, we need toknow if you want a standard calibration, or a calibration traceable to N.I.S.T.(Includes calibration certificate plus recorded calibration data).Ship To: Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments15 Faraday DriveDover, NH 03820 USAPhone: (800) 945-2362 (Ext. 360)(603) 749-6434 (Ext. 360)Fax: (603) 742-2346 or (603) 749-6309E-mail: repair@aemc.com(Or contact your authorized distributor)Costs for repair, standard calibration, and calibration traceable to N.I.S.T. areavailable.NOTE: You must obtain a CSA# before returning any instrument.Technical and Sales AssistanceIf you are experiencing any technical problems, or require any assistance withthe proper operation or application of your instrument, please call, mail, fax ore-mail our technical support team:Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments200 Foxborough BoulevardFoxborough, MA 02035 USAPhone: (800) 343-1391(508) 698-2115Fax: (508) 698-2118E-mail: techsupport@aemc.comwww.aemc.comNOTE: Do not ship Instruments to our Foxborough, MA address.