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D5-MANS
Mar ’19
- 17 -
Maintenance Procedures (cont’d)
Adjusting the Drive Belts
This unit is equipped with a Belt Tensioning Device that constantly maintains the proper drive tension for the Belt.
The loosening and tightening of the Drive Belt is done by way of moving the Belt Tensioning Roller up or down on
the belt, respectively.
To loosen the belt tension, simply turn the Hand Wheel
counter-clockwise. This will allow the Belt Tensioning
Roller to lift off of the Belt.
To tighten the belt tension, simply turn the Hand Wheel
clockwise. This will compress the Tension Spring and
push the Belt Tensioning Roller down further onto the
Belt.
Note: The Belts (new) should be tensioned as
follows:
HP
Deflection
Frequency
New
After Run
5
10mm
deflection
with 40N at
centre span
(.39” with
9 Lb Force)
96 Hz
93 Hz
Spring
Belt
Hand
Wheel
Roller
Using a Frequency Analyzer
After the belts have been installed it is recommended that
the belt tension be set to a frequency listed in the above
table. To obtain the correct frequency the use of a
Frequency Analyzer ‘
FA-9000
’ is recommended.
1.
Place the belts over the air end and motor pulleys.
2.
Place the Roller onto the belt as shown above.
3.
Turn the Hand Wheel clock-wise to tighten the spring
and push the Roller onto the Belt.
4.
Check the frequency of the Belt with the Frequency
Analyzer:
a.
Place the microphone of the Frequency
Analyzer close to the Belt
b.
Push the ‘On’ button
c.
Pluck the belt
d.
The Frequency Analyzer will make a tone
and the frequency will displayed on the
screen
5.
Adjust the Spring as required repeating steps 3 & 4.
Summary of Contents for D5
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