Zeta NPAD Installation Manual

Also see for NPAD: User manual, maintenance guide & log book

Zeta NPAD Installation Manual Manual pdf 20 page image

PREMIER AD INSTALLATION MANUAL. Software:31/3/04 & LC6Approved Document No: GLT.MAN-105 PAGE 20Issue : 1.02 Authorised: GH Date: 15/03/200411. GENERAL FAULT FINDING11.1 COMMON FAULT.This is a general indicator which lights whenever a fault is present. It doesn’t refer to aspecific fault.11.2 ZONE FAULTSThere are several reasons for the zone fault LED to light.1. There is a break, or short circuit to devices in that zone,2. A device has been removed from that zone3. A device in that zone is communicating a fault condition to the panel with its analogue value. Avalue less than 8 is usually a fault condition. (This could be a zone monitor reporting a fault in itsexternal PSU for example.)The LCD screen should give further information about thefault. It may give the loop, address & label of the devicecausing a problem. If it reports a loop fault, then this indicatesa break (or short) in the loop cable. (note that if Spursare used, the panel may not detect the brake, but will stillreport the device missing)Entering the device status menu & viewing the addresswhich shows a fault will also help identify the problem.If the device is present, but gives a fault value (less than 8),then there is a problem with that device or one of its add oncomponents (eg power supply)If the device is missing (NONE*), then :-Check the device has not been removedCheck that there is power to the baseCheck that its address hasn’t been changed (compare to system set-up chart)Check that the base contacts are clean and free from dirt & corrosionIf possible, try a replacement head (remembering to set the correct address)11.3 SUPPLY FAULTSa. BATTERY FAULTLoss of Battery power – Remedyi. Check battery fuse FS2.ii. Check that battery connections are secure.b. CHARGER FAULTLoss of Mains power – Remedyi. Check mains fuse (Conn 6).ii. Check that main power is present.iii. Check charger fuse FS1.c. LOW BATTERYLow Battery voltage detected – Remedyi. Check battery voltage. (should be around 26-27V)ii. Check that 2 x 12v batteries are connected in SERIES) to give 24Viii. Check that charger fuse FS1 is okOther possible causes of supply faults are:-Wrong Charging Voltage.The charging voltage should be 28.3V off load at 22-24 oC. If it has been altered, reset usingpotentiometer VR1Overcharged Batteries.Remove the batteries and measure the voltage. If it is reading over 27.4 then the batteriesare overcharged. Try to run the panel on batteries only for half an hour or so to try todischarge the batteries. If this doesn’t solve the problem, replacement batteries will berequired.[01] *** FAULT ***====================Lp:1 Ad:001 Zn:01Device Type: ZMU *Value:04 No Devs:1====================Loop:1 Address:001*** FAULT ***Charger or Battery