del-0776a4 specification for approval =============================================== customer description dc blower part no. rev. delta model no. BFB1212EH-TP34 rev. 00 sample issue no. sample issue date. nov 12, 09 please send one copy of this specification back after you signed approval for produc- tion pre-arrangement. approved by : _____________________________ date : _____________________________ delta electronics (thailand) public company limited. 111 moo 9 wellgrow industrial estate bangna-trad road, tambon bangwua, amphur bangpakong, chachoengsao 24180 thailand tel. +66-(0)-38522455, fax. +66-(0)-38522477
doc. no: fmbg-es form 001 rev. 01 date: june 24, 2009 application notice 1. delta will not guarantee the performance of the products if the application condition falls outside the parameters se t forth in the specification. 2. a written request should be submitted to delta prior to approval if deviation from this specification is required. 3. please exercise caution when handling fans . damage may be caused when pressure is applied to the impeller, if the fans are hand led by the lead wires, or if the fan was hard-dropped to the production floor. 4. except as pertains to some special designs, there is no guarantee that the products will be free from any such safety problems or failures as caused by the introduction of powder, droplets of water or encr oachment of insect into the hub. 5. the above-mentioned conditions are representa tive of some unique examples and viewed as the first point of referenc e prior to all other information. 6. i t is very important to establish the correct polarity before connec ting the fan to the power source. positive (+ ) and negative (-). damage may be caused to the fans if connection is with reverse polarity, if there is no foolproof method to protect against such error specifically mentioned in this spec. 7. delta fans without special protection are not suitable where any corrosive fluids are introduced to their environment. 8. please ensure all fans are stored according to the storage temperature limits specified. do not store fans in a high humidity environment. we highly recommend performance testing is conducted before shipping, if the fa ns have been stored over 6 months. 9. not all fans are provided with the lock rotor protection fe ature. if you impair the rotation of the impeller for the fans that do not have th is function, the performance of those fans will lead to failure. 10. please be cautious when mounting the fa n. incorrect mountin g of fans may cause excess resonance, vibr ation and subsequent noise. 11. it is important to consider safety when testing the fans. a suitable fan guard should be fitted to the fan to gu ard against any potentia l for personal injury. 12. except where specifically stated, all tests are carried out at room (ambient) temperature and relative humidity conditions of 25 o c, 65% rh. the test va lue is only for fan performance itself. 13. be certain to connect an ?4.7f or grea ter? capacitor to the fan externally when the application calls for using multiple fans in parallel, to a void any unstable power.
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