Bacharach 450 Operating & Maintenance Instructions
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ECA 450 Parts & ServiceInstruction 0024-9400 73CO-HI Sensor Error – CO-HI sensor was exposed to flue gas during warm-up.CO-LO Sensor Error – CO sensor was exposed to flue gas during warm-up.Pressure Sens. Error – Pressure sensor is measuring a pressure that isoutside the of range of ±3 inches of water column during warm-up.SO2 Sensor Error – SO 2 sensor was exposed to flue gas during warm-up.Low Battery – Battery voltage is low. Only several minutes of operating timeremain.5.3 Error SymbolsThe following error symbols are shown in the Combustion Test Screen and ona printout to indicate: 1) combustion test data that cannot be calculated,2) sensors that are in over-range, or 3) sensors that were detected as being inerror during warm-up.“– – – –” appears in the number fields of combustion test data that cannot becalculated because the current measurements will not provide a meaningfulcalculation. For example, if the Oxygen level is greater than 16%, or the stacktemperature is greater than 2000 °F (1093 °C), or the ambient airtemperature is greater than 999.9 °F (537.8 °C), then the value for EFF(combustion efficiency) cannot be calculated.“x x x x” indicates an over-range condition, and appears in the number fieldsof sensors that are being exposed to gas levels that are beyond the analyzer’sdetection range. This symbol also appears in the number field of the HCsensor when there is not enough Oxygen present to measure the combustiblegas level.“ ” is displayed in the number fields of sensors that were reported asbeing in error during warm-up, and also in the number fields of data thatderive their values from the sensor in error. For example, if the NO or NO 2sensor was in error, then the NOx data field will also contain stars.* * * * |
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