Baltimore Aircoil Company Cooling Tower 3272C

Inspect and clean as necessary:

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. Refer to “Cold Weather Operation” on page 28 for more details.

Carry out frequent visual inspections and routine maintenance services during operation in subfreezing weather.

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.

Drain the oil at operating temperature through the drain plug.

Refill the gear drive through the oil fill elbow with the recommended type and amount of lubricant.

Upload a photo of the refilled gear drive.

Sign off on the oil replacement procedure.

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

Inspect and clean as necessary:

Loosen the lock nut on the motor base adjusting screw.

Turn the motor base adjusting screw clockwise to tension the belt or counterclockwise to relieve belt tension.

Rotate the drives several times by hand to evenly distribute the tension throughout the belt.

Retighten the locking nut on the motor base adjusting screw when the belt is properly tensioned.

Lubricate motor base adjusting screw

Lock nut on the motor base adjusting screw loosened

Direction of motor base adjusting screw rotation

Drives rotated several times by hand to distribute tension

Locking nut on the motor base adjusting screw retightened

Sign off on the belt tension adjustment

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