•The maximum operating inlet water temperature should not exceed 140° F.
CAUTION:
When stepping on top of the fill, distribute the body weight by means of two plywood plates as described earlier in these instructions.
Fan and Mechanical Drive System and Its Maintenance
Safety
Follow all safety instructions previously discussed.
Motor:
•The standard motor is a totally enclosed motor , Class F insulation, 1.15 minimum service factor, epoxy coating on outside frame, and is specifically designed for cooling tower duty to the exclusive specifications of Delta Cooling Towers.
•Should there be a problem with the motor, which may be covered under our standard warranty, the motor must only be inspected and serviced by an authorized motor manufactures warranty shop, and Delta Cooling Towers, Inc. must be notified, otherwise the warranty is void.
•If the motor bearings have grease fittings, follow the lubrication recommendations as outlined in instructions from motor manufacturer. The majority of motors do not require greasing.
Start-up Instructions
Complete all
•Clean any accumulated debris or packaging material from inside tower sump.
•Check to be sure that the fan motor is properly wired for correct rotation as viewed from the top of the fan. Reverse leads will cause incorrect rotation and reverse direction of airflow.
Note: Fan rotation should always agree with rotation labels. Standard fan rotation is clockwise, (C.W.) however;
•Check for free rotation of the fan and fan blade tip clearance.
•Fill the cooling tower sump or the cold water storage reservoir on gravity drain applications.
•Water recirculation pump should be primed and all piping below the tower sump filled with water. Check pump for proper shaft rotation.
•Start water recirculation pump and adjust flow to design. A flow metering device installed in the inlet is recommended but if not available, use the pressure differential across the pump in conjunction with the pump curve.
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