Final Control Settings; Maintaining Control Parameter Records - Daikin SWP Series Installation Manual

Drive Belt Adjustment
General Rules of Tensioning
• The ideal tension is the lowest tension at which the belt
will not slip under peak load conditions .
• Check tension frequently during the first 24–48 hours of
operation .
• Overtensioning shortens belt and bearing life .
• Keep belts free from foreign material that can cause
slippage .
• Make V-drive inspections on a periodic basis . Adjust the
tension if the belt is slipping . Do not apply belt dressing .
This can damage the belt and cause early failure .
Tension Measurement Procedure
1 . Measure the belt span . See
2 . Place the belt tension checker squarely on one belt at
the center of the belt span . Apply force to the checker,
perpendicular to the belt span, until the belt deflection
equals belt span distance divided by 64 . Determine force
applied while in this position .
3 . Compare this force to the values on the drive kit label
located on the fan housing .
When new belts are installed, the initial tension drops . After 48
hours of operation, check the tightness of all setscrews on the
fan hub and bearing sleeves and retighten belts .
NOTE: If after all tension adjustments the belts slip or squeal
when starting, increase tension slightly . Replace the
belts if they are worn or glazed .
Figure 30: Drive Belt Adjustment
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Figure 30 .
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Final Control Settings

When all of the Start Up procedures are completed, set the
individual control parameters for operation, as follows:
• Unit switch S7 to AUTO
• Heating/Cooling control parameters, as required
• Alarm limits, as required
• Night setback parameters, as required
• Duct static pressure and building static pressure,
as required
• Economizer control parameters, as required
• Control timers . as required
• Date and time, as required
• Operating schedule, as required
• Holiday schedule, as required
Maintaining Control
Parameter Records
After the unit is checked, tested, and started and the final
control parameters are set, record the final settings and keep
them on file. Update this file whenever changes are made to
the control parameters . This facilitates any required analysis
and troubleshooting of the system operation .
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