Baltimore Aircoil Company Cooling Tower 3371C

Inspect general condition of the unit and check unit for unusual noise or vibration.

When operating in ambient temperatures below freezing, the unit should be inspected more frequently.

Ensure all controls for capacity and freeze protection are set properly and functioning normally.

Prevent excessively high water levels and possible overflow of the cold water basin due to over pumping, clogged strainers, or make-up valve malfunction.

Resolve any icing conditions that may damage the unit or the supports, impair the system performance, or create a safety hazard.

Inspect air intake louvers/Combined inlet shields

Check and adjust water level in cold water basin

DANGER: Do not perform any service on or near the fans, motors, and drives, or inside the unit without first ensuring that the fans and pumps are disconnected, locked out, and tagged out.

Check oil level weekly with the unit idle. On units supplied with an external sight gauge, check the oil level of the external sight gauge and the sight gauge on the gear drive to ensure that the proper amount of oil is in the gear drive.

If equipped with an external oil line and site gauge, check weekly to make sure the breather hole at the top of the sight gauge is open.

Sign off on the weekly gear drive oil check

Warning: Ensure that the fans and pumps are disconnected, locked out, and tagged out before performing any service.

Are the two pillow block ball bearings supporting the fan shaft present?

Is each bearing equipped with a lubrication fitting and a slinger/locking collar to keep out moisture?

Select the type of grease used for lubrication

Was the lubrication done with a manual grease gun or BAC’s optional Automatic Bearing Greaser?

Was high-pressure grease gun avoided to prevent rupturing the bearing seals?

Sign off on the fan shaft bearings lubrication

Inspect and clean as necessary:

· Inspect general condition of the unit and check unit for unusual noise or vibration

· Inspect cold and hot water basins

· Flush water distribution system/Inspect spray nozzles

· Inspect air intake louvers/Combined inlet shields

· Check and adjust water level in cold water basin

· Check operation of make-up valve

DANGER: Do not perform any service on or near the fans, motors, and drives, or inside the unit without first ensuring that the fans and pumps are disconnected, locked out, and tagged out.

Check the drive alignment annually to ensure maximum belt life.

Place a straight edge across the driver and the driven sheaves as shown in Figure 4a for standard drives and in Figure 4b for the BALTIGUARD™ Fan System or the BALTIGUARD PLUS™ Fan System.

The straight edge should contact all four points as shown in Figure 4a indicating that the drives are properly aligned.

There should be no more than 1/16” deviation from the four points of contact.

In case of realignment, loosen the motor sheave, and align it with the fan sheave. Allow 1/4” for draw-up as the bushing screw is retightened.

Check optional basin heater and stand alone BAC heater control panel