(2) Disassemble screws on Grille Cover (fan side, Fig. 30) check that the screws that secure the fan
are not loose. If loose, tighten the screws. (Fig. 31-A)
Or use
a “T” socket wrench to tighten the nuts.
(Fig. 31-B)
Fig. 30
Fig. 31-A
Fig. 31-B
X-400AT * /P-400AT *, X-430AT * /P-430AT *
X-200AT * /P-200AT *
X-600*AT */P-600*AT *, X-630AT * /P-630AT *
X-230AT * /P-230AT *
(3) Check that the fan is not damaged. If damaged, replace the fan.
Verification method: Compare to another normal blower that there is no significant difference in the
noise and vibration.
Grille Cover
(Fan Side)