, u$ n7 E3 T; E. r( {3 k2 V, EWhen the customer wants to buy a new compressor, he has to prepare the following questions. * B8 [+ ^ h. B7 @4 R9 U' a" T+ b3 Q* @" y
1. Which air quality he needs? 1 u; A8 h* T9 W8 [% ]$ Sit decides between oil-free and oil-lubricated machines 4 L4 a! N& @+ G7 _6 R* d* I. X9 ?( P# s1 F3 j7 G
2. Will it be a base load machine? a peak load machine? or both functions?7 u5 w! q' M/ L' z6 N: z! M
it decides between machines with or without frequency convertor 4 y: u5 g% }) C $ r- x a4 }) ?: [3. How many hours will the machine be running yearly? 3 h' G, l" ^: U* X5 ^& X! l' x
it decides whether it will be an energy-saving or normal machine?/ L7 }- P& Z M$ K7 P
: x7 y* `' Q: H# q! ?* r' c2 d0 ?4. What technical requirements should be fulfilled. like pressure, volumeflow, power supply / d! ?0 o4 m7 |1 C. \it decides which machine class from the manufacturers & }. A2 V8 v) O- \1 e5 ^) [% _+ a& o7 f0 ~" ~
5. Where will the machine be used?' ~9 q8 m2 o$ W9 \) b
it decides unit number and construction special requirements. e.g. in hopital --> 3 parallel units. in train --> compact units. on ship --> units mounted directly on board. and so on: z2 W, S7 Z) {. P7 \
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6. What is the budget for the new machine? 0 I* }. H) w/ B; ] r; \- U3 vit decides domestic manufacturer and foreign company / ~& p& w: V+ N. H ?3 [7 V( S! B7 T/ m3 |2 H
7. How close should the service sites be? $ t& A; `0 f1 g8 Dit decides some manufacturers with less service possibilities will not be considered $ C) P- x. p' t$ ]. _& H) [ k4 r6 F$ m8 A2 X
Last but not least, customer should consider, whether he is looking for a stand-alone machine or a system. Many manufacturers offer solutions with complete systems.作者: 水上漫步 时间: 2011-5-29 17:37
哎，好多都是重的