Fisher FSL-850B-H-3F Installation And Operation Manual page 34

9) Information for fuse
FSL-850B-H-3F
FSOL-850B-3F
10) Adjust the tightness of the belt of the fan unit (Be Suit For 30KW)
The rotation of the fan is achieved by the transmission of the belt. The velocity and stability of the
fan is associated with the tightness of the belt and the tightness should be adjusted after a period of time.
For a new belt, the tightness should be adjusted for at least twice within 24 hours.
After one week running, the tightness of the belt should be adjusted again, we should routinely
check it every 1-2 months; also ensure the test results complying with Table 10.2.
The adjustment of the tightness of the belt is shown in Fig. 10.8. Loosen screws fixing motor on
the base, move motor along the direction of arrow as shown in the picture, then fix the screw again.
The tightness level of belt is tested by tensiometer as shown in Fig. 10.9, when
deviation length(Deviation=The total length beit/64) ,read the value on the meter, the value should be in
the category specified in Table 10.2.
Belt Section
SPA
SPZ
Fig.10.8 Adjust the tightness of the belt
Fuse
Indoor
Outdoor
Table.10.2 Tension range of the belt
Diameter of the small wheel (mm)
80~132
56~95
100~140
Fig. 10.9 Utilization of the belt tensiometer
30
Model
T5AL 250V
T3.15AL 250V
Tension (N)
Min
25
13
20
code
46010013
46010014
△ reaches the
Max
35
20
25