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5
Cleaning
• Drain the cold water basin with the strainer in place.
• Open the hot water basin covers and remove any dirt or debris from the hot water
basins.
• Clean and inspect the fan deck.
• Remove dirt and debris from the fan guard(s).
• Inspect and clean all spray nozzles.
• Clean and inspect the mechanical components, such as the fan and motor.
• Flush the cold water basin to remove any accumulated dirt and debris.
• Remove, clean, and replace the cold water basin strainer.
Inspection
• Conduct external inspection of the equipment. Check for leaks, corrosion, and any
structural damage.
• Conduct internal inspection of the equipment. Check for anything unusual such as
structural or mechanical component damage.
• Inspect piping and connections.
• Thoroughly inspect the fan for any damage.
• Verify proper fan tip clearance. Refer to Fan “Inspection & Maintenance” on
page 10
.
• At seasonal start-up or after prolonged shutdown, check the motor insulation with an
insulation tester prior to the motor start-up.
• Check and adjust the belt tension or check gear drive oil levels.
• Check that the float operated make-up valve is operating freely.
Start-Up
Prior to seasonal start-up, lubricate the motor base adjusting screw (see
Figures 4a and
4b
on
page 12
) and the fan shaft bearings (see
page 17
). At initial start-up, bearings are
factory lubricated prior to shipment. However, if the unit has been idle for more than three
months, re-lubricate the bearings (see
page 17
). For towers with the optional gear drive
system, refer to
page 13
.
• Apply RUST VETO
®
to steel shafts.
• Fill the cold water basin with fresh water to the overflow level via the make-up valve.
• Set the make-up valve float so the water shuts off at the operating level (see
Table 1
,
page 9
).
• For units with the optional EASY CONNECT
®
Piping Arrangement, verify the drain plug
is installed.
• Check that the float-operated make-up valve is operating freely. Closely monitor the
water level and adjust as necessary during the first 24 hours of operation.
• For the top inlets only, adjust the flow balancing valves to equalize flow to the hot
water basin(s). This valve may be provided by others or optionally supplied by BAC.
• Series 3000 Cooling Towers equipped with the optional EASY CONNECT
®
Piping
Arrangement do not require balancing the flow to the hot water basins.
• For multicell arrangements, balance the flow between the cells to obtain even water
distribution.
Unit Operation and
Storage
Start-Up Procedure
General
Cleaning
Inspection
Start-Up
ATTENTION:
Check to ensure the
controls for the fan motor are set
to allow a maximum of six on-off
cycles per hour to prevent motor
overload.