Doc. No: FMBG-ES Form 001 Rev. 0001 Date: June 24, 2009
Application Noti ce
1. Delta will not guarantee the performance of the products if the application condition
falls outside the parameters set 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 handl ed by the lead wires, or if the fan was
hard-dropped to the production fl oor.
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 e ncroachment of insect into the hub.
5. The above-mentioned conditions are repre sentative of some unique examples and viewed
as the first point of refere nce prior t o all other information.
6. It is very important to esta blish the correct polarity before connecting the fan to the
power source. Positive (+) and Negative (- ). Damage may be caused to the fans if
connection is with reverse polarity, if t here 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 t he storage temperature li mits specified.
Do n ot store fans in a high humidity en viron ment . We hi ghly reco mmen d performanc e
testing is conducted before s hipping, if the fans have been store d over 6 months.
9. Not all fans are provi ded with the L ock Rotor Protection feature. If you impair the
rotation of the impeller for the fans that do not have this function, the performance
of those fans will lead t o failure.
10. Please be cautious whe n mounting the fan. Incorrect mounti ng of fa ns may ca use
exce ss res onance, vibr ation and subseq uent noise .
11. It is important to consider safety when testing the fans. A suitable fan guard should be
fitted to the fan to guard against any potential for personal injury.
12. Except where specifically state d, all tests are carried out at room (ambient) temperat ure
and relative humidity conditions of 25
o
C, 65% RH. The test value is only for fan
performance itself.
13. Be certain to connect an “ 4.7µF or greater” capacit or to the fan externally when
the application calls for using multiple fans in paral lel, to avoid any unsta ble power.
