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7
• Clean and flush the cold water basin with the basin strainer in place.
• Leave the cold water basin drain open so rain and melting snow will drain from the
tower.
• Clean the basin strainer and re-install.
• Cover the fan discharge to keep out dirt and debris.
• Except for the PT2-0412, lubricate the fan shaft bearings, motor base, and motor
base adjusting screw.
• Apply RUST VETO
®
to steel shafts and bushings.
• Inspect the protective finish on the unit. Clean and refinish as required. Refer to
“Corrosion Protection” on
page 18
for more details.
• Lock out the fan motor starting device in the “OFF” position to ensure personal safety
in case of future inspection or service.
• Verify combined inlet shield retainers are compressed to engage the combined inlet
shields (CIS). This will prevent the CIS from separating from the unit during high
winds.
Prolonged Outdoor Storage
Perform the following services whenever the unit will be shutdown and stored in excess
of
three months
. Conduct the “Extended Shutdown” procedure on
page 6
if the unit is
installed.
Water Distribution System
• Ensure the cold water basin is fully drained and the drain is open to minimize
stagnant buildup in the basin.
Motors and Drives
BAC standard motors are designed for storage at ambient temperatures of -20ºF to 104ºF
(-28.9ºC to 40ºC). Prolonged periods of exposure above or below these specified conditions
could degrade components of the motor and cause malfunction or premature failure.
• Motors should be removed and stored inside whenever possible. When indoor storage
is not possible, the motors must be covered with a breathable tarp. Do not use plastic
or plastic film. This cover should extend below the motor and be secured; however,
it should not tightly wrap the motor. This will allow the captive air space to breathe,
minimizing formation of condensation.
• Care must also be taken to protect the motor from flooding or from harmful chemical
vapors.
• The storage area should be free from ambient vibration. Excessive vibration can cause
bearing damage.
• Precautions should be taken to prevent rodents, snakes, birds, or other small animals
from nesting inside the motors. In areas where they are prevalent, precautions must
Unit Operation and
Storage
Start-Up Procedure
Start-Up
Extended Shutdown
Prolonged Outdoor Storage
Water Distribution System
Motors and Drives
NOTICE:
Covering the unit with
a clear plastic tarpaulin during
storage can trap heat inside the
unit and cause damage to the PVC
components.
