MANAGEMENT SYSTEM AND METHOD FOR EXHAUST PURIFICATION APPARATUS

In a server (10), a standard setting section (11) establishes a standard amount of deposits and a standard amount of money of a maintenance charge in advance; a first calculating section (12) calculates the maintenance charge by multiplying the standard amount of money by a ratio of a deposition level at returning to a standard deposition level; a memory section (13) stores in memory an engine operating time, the number of regeneration sequences performed, and a reduction coefficient table; a second calculating section (14) establishes a reduction coefficient based on the reduction coefficient table and reduces the maintenance charge after reduction by multiplying the maintenance charge calculated by the first calculating section (12) by the reduction coefficient; and a third calculating section (15) calculates an amount of refund by subtracting the value of the maintenance charge from the value of a maintenance guarantee.