| 摘要 |
A fluid change system (10) for use in changing fluid, i.e. motor oil from machinery has a portable "suitcase" unit (12) and a recharge unit (14) for recharging the suitcase unit. The suitcase unit has a used fluid tank (22), a new fluid tank (20), and a compressed air tank (18) and a four way control valve (56). Recharge ports (58, 60, 62, 64, 66) allow for recharge of the suitcase unit through which the new fluid tank is refilled with new fluid and recharged with pressurized inert gas, the used fluid tank is emptied and placed under vacuum, and the compressed air tank is refilled with compressed air. A venturi (84) allows extra vacuum to be placed on the used fluid tank by a user. A computer (212) controls the recharge sequence.
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