Endura AZ30 series integral probe and remote transmitterCombustion oxygen monitor 1 SafetyCOI/AZ30E–EN Rev. D 71.9 Safety RecommendationsFor safe operation, it is imperative that these service instructions be read before use and that the safetyrecommendations mentioned herein be scrupulously respected. If danger warnings are not heeded to,serious material or bodily injury could occur.1.10 Service and RepairsOther than the serviceable items listed in OI/AZ30P–EN, none of the instrument's components can beserviced by the user. Only personnel from ABB or its approved representative(s) is (are) authorized toattempt repairs to the system and only components formally approved by the manufacturer should beused. Any attempt at repairing the instrument in contravention of these principles could cause damage tothe instrument and corporal injury to the person carrying out the repair. It renders the warranty null and voidand could compromise the hazardous area certification, correct working of the instrument, electricalintegrity and CE compliance of the instrument.If you have any problems with installation, starting, or using the instrument please contact the company thatsold it to you. If this is not possible, or if the results of this approach are not satisfactory, please contact themanufacturer's Customer Service.1.11 Potential Safety HazardsThe following potential safety hazards are associated with operating the system: Electrical (line voltage) – see Section 2.2, page 9 Hot surfaces – see Section 2.2, page 9 Probe weight – see Probe User Guide (OI/AZ30P–EN) Battery backupThis product employs an IEC 60086-1 Type C battery Varta type CR 2025 Li-Manganese-dioxide /Organic Electrolyte cell, 3V 165mAh or equivalent.The battery cell is used as backup for a real-time clock with a minimum life expectancy of 10 years innormal use.The battery is one of the components covered by the hazardous area certification of this product andmust be replaced only with the same specification cell (or direct equivalent) and must be fittedcorrectly.If the battery needs replacing please contact ABB. Use in oxygen-enriched atmospheresThe Endura AZ30 oxygen systems must be used only for measuring non-oxygen enriched gasses(not more than 21 % oxygen [air]) at pressure no greater than 1.1 bar absolute (44 in. WG).Warning. The installation of the instrument should be performed exclusively by personnel specializedand authorized to work on electrical installations, in accordance with relevant local regulations.