OIL HOLDING AMOUNT ADJUSTING SYSTEM AND OIL HOLDING AMOUNT ADJUSTING METHOD

PROBLEM TO BE SOLVED: To provide an oil holding amount adjusting system and method capable of accurately determining necessity of oil supply into an oil circulation system and balancing oil holding amounts between oil holding tanks.SOLUTION: Oil amount levels of respective oil holding tanks are measured, the total amounts of oil holding amounts of total oil holding tanks are calculated based on the measured oil amount levels, it is determined whether an oil amount level of at least one oil holding tank of the measured oil amount levels of the respective oil holding tanks is lower than an oil amount level lower limit threshold, it is determined whether the total amounts of the oil holding amounts are lower than a total amount lower limit threshold when the oil amount level of the oil holding tank is lower than the oil amount level lower limit threshold, a warning is issued when the total amount of the oil holding amounts are lower than the total amount lower limit threshold, and oil is transferred to the oil holding tank whose oil amount level is lower than the oil amount level lower limit threshold from the other oil holding tank, when the total amounts of the oil holding amounts is higher than the total amount lower limit threshold.