另外有一台和這一樣的二手（具體不確定幾手）咖啡機，使用年限不詳（對方店關門結業，估計店幾經轉手，對方也不太確定機子年限），價格比新機便宜不少，因為自己外行，所以也不敢下手，在此也請教大大從哪些方面去判斷一個二手機是否狀態良好并值得購買？謝謝！
以下為這台機的網頁介紹，期待幫助，謝謝！
The Vibiemme Minimax: Minimum space requirement- Maximum ability
Boiler Setup Heat Exchange
Pump Type Rotary Pump
3 Way Valve 3 Way Valve
Group Control Electronic
PID Control No PID
Hot Water Tap Hot Water Tap
Gauge Type Pressure Gauge
Country of Manufacture Made in Italy
Best Seller N/A
The Minimax offers a quality package at an excellent price with a very small footprint for a two group machine.(53 centimetres wide by 53.5 centimters deep with adjustable feet positions for narrow benchtops)
The Minimax is available in manual push button( Pulsante) or full auto dosage (Electronica) configurations.
The Minimax has a 9 litre boiler, and a 2700 watt heating element.
The Minimax is an excellent machine for environments where maximum production is only for short periods through out the day or where coffee is a moderately popular add on to the main sale.
Although it may be small in size and designed with moderate production in mind it is built with the same components and to the same standard as the the bigger models in the Vibiemme range.
。。二手機價格只要新機的40%，但是不知道怎麼判斷二手機狀況是好是壞，請教大大咖啡機哪裡比較容易維修？如果鍋爐內已長滿水垢，自己是否有辦法清潔？要從哪些方面去判斷二手機器狀態是否良好？謝謝！
