Carrier VECTOR 1550 Series Operation & Service Manual

62-61753-213-9The microprocessor may be configured so that: the same settings apply to any set point, or the settings are different, depending on whether theset point is in the perishable range or in the frozenrange.3.6.2 Restart VoltageThe microprocessor will restart the unit when a presetminimum voltage is reached. The minimum voltagemay be configured from 12.0 to 12.8 Volts in 0.1Vincrements. The factory setting for this Configuration is12.2V.A lower voltage selection may result in a longer offcycle (based on battery voltage) and possibly overallshorter battery life. A higher voltage selection mayresult in a shorter off cycle (based on battery voltage)and possibly overall longer battery life.3.6.3 Charging AmpsThe microprocessor may be configured to monitorbattery charging amperage in addition to battery volt-age. The battery charging rate must be below the se-lected amp setting to allow the unit to cycle off.The Configuration may be set from 1.0 to 10.0 Amps in0.5 amp increments. A weak or defective battery mayindicate a suitable voltage charge while the alternatoris actually putting a high charging rate into it, then notbe sufficiently charged to restart the engine at the endof a Start-Stop Off Cycle.The factory setting for this Configuration is 5.0 amps.This is a general setting that may need to be adjustedfor the operating environment of the unit. Units operat-ed in colder ambient temperatures may require a lowersetting to force a higher charge in the battery prior toStart-Stop Off Cycle. Units operated in warmer ambi-ent temperatures may use a higher setting.As a battery ages, it is normal for it to require longerre-charging periods. If the running time is graduallyincreasing in Start-Stop operation due to the batteryrequiring a longer charging period, this run time maybe shortened by raising the amp setting. (This may bechecked by reviewing downloaded data and looking atthe amp reading during prolonged engine Start-StopOn Cycles.)