Nautel V10 User's Installation And Operation Manual

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Nautel V10 User's Installation And Operation Manual Manual pdf 106 page image

Page 5-2 V10/V7.5/V5/V3.5 Installation and Operation ManualIssue 3.5 Section 5 System Level TroubleshootingTable 5-1: Scheduled Maintenance Checklist (Example)Date Commissioned: 01 Jan 06Maintenance Item Date Initials Comments01 Jan 06 A.B.C.01 Jul 06 A.B.C. Replaced batteryBattery level OK or batteryreplaced01 Jan 07 A.B.C. Replaced battery01 Jan 06 A.B.C.01 Jul 06 A.B.C.Hardware checked and tight01 Jan 07 A.B.C. Tightened hardware01 Jan 06 A.B.C.01 Jul 06 A.B.C.Filters cleaned or replaced01 Jan 07 A.B.C. Replaced filters01 Jan 06 A.B.C.01 Jul 06 A.B.C.Fans checked or replaced01 Jan 07 A.B.C. Replaced defective fan (B2)01 Jan 06 A.B.C.01 Jul 06 A.B.C.Transmitter cleaned01 Jan 07 A.B.C. Cleaned transmitter01 Jan 06 A.B.C. Commissioned01 Jul 06 A.B.C.Transmitter operating atdesired power with no alarms01 Jan 07 A.B.C. Fan Fail B2 (replaced)5.2.3 Battery ReplacementThe transmitter's control/display PWB(A43) contains a battery backup circuitthat provides a memory of alarmoccurrences during ac power failure.Replace the battery (3 V lithium, NautelPart # BBLT01, Vendor # CR2032) atleast once a year or whenever the frontpanel GUI displays a Backup BatteryLow message. Replace the battery with acvoltage applied to the transmitter.5.3 CORRECTIVE MAINTENANCECorrective maintenance procedures consistof identifying and correcting defects ordeficiencies that arise during operation ofthe transmitter. Local/remote alarm signalsare generated when a malfunction occurs.If the alarm condition is caused by amalfunction in the RF power stage, thetransmitter will attempt to remain on-air atreduced RF power. The nature of the faultand station policy dictates whether animmediate maintenance response isnecessary. There are three ways to carryout fault analysis and rectification – localon-air, remote on-air and off-air.5.3.1 On-Air TroubleshootingOn-air troubleshooting can be performedfrom a remote location or locally at thetransmitter site.5.3.1.1 Remote TroubleshootingRemote on-air troubleshooting consists ofmonitoring the transmitter's radiated signalusing an on-air monitor and observing thestatus of remote fault alarm indicators. Theinformation obtained from these sourcesshould enable an operator to decide ifresponse may be deferred to a moreconvenient time, if immediate correctiveaction must be taken, and/or whether thestandby transmitter must be enabled (if oneis available). Nautel recommends that thesignificance of remote indications and theappropriate responses be incorporated intoa station's standard operating procedures.Refer to paragraph 5.5 to determine thetroubleshooting action for a given fault.It is recommended thatyou review the EventsLog and maintain adetailed record of alarmoccurrences and criticalmeter readings.