Marley Cooling Tower 3851

Is the blowdown system discharging water continuously during operation?

Enter the current concentration level of dissolved solids in the water.

Enter the current blowdown rate (percent of total water flow rate).

Verify the concentration levels are within acceptable range (2-4 concentrations)

Is the water treatment company maintaining a relatively constant level of concentrations?

Are water treatment chemicals being added outside the cold water basin?

Bearing Housing Oil Level Check

Check the oil level in the oil cup at shutdown.

Is the oil level in the oil cup adequate?

Fill to the proper level with SAE 30 (ISO 100) weight oil if necessary.

Operate the system until the oil is warm.

Refill with SAE 30 (ISO 100) weight oil.

Ensure mechanical equipment is inoperable during maintenance

Lock out electrical system disconnect switch

Use appropriate ladder for upper surface maintenance

Check float valve for proper operation

Check water level for proper setting

Basin and Suction Screen Maintenance

Wear proper personal protective equipment

Clean the cooling tower thoroughly

Is there any biofouling present?

Are there positive cultures of legionella?

Drain the entire system including cooling tower, system piping, and heat exchangers

Describe any necessary repairs made

Apply protective coating to all metal parts

Pay attention to bearing housing supports during maintenance

Is the shutdown period longer than seasonal?