18
Maintenance
Seasonal Shutdown Instructions
When the system is to be shut down for an extended period of time, it is
recommended that the entire system (cooling tower, system piping, heat
exchangers, etc.) be drained. Leave the basin drain open.
During shutdown, clean the tower and make any necessary repairs. Apply
protective coating as required to all metal parts. Pay particular attention
to bearing housing supports.
Bearing Housing
• At shutdown, check the oil level in the oil cup.
• At start of new operating season, operate until the oil is warm—drain
and refill. Use SAE 0 (ISO 100) weight oil.
• Bearing housing must be refilled at the point where the oil line from
the oil reservoir cup connects to the bearing housing. Attach oil line
and fill line and oil cup. Fan guard will have to be removed to change
oil. Each month check the oil level at the oil cup.
Electric Motor
Clean and lubricate motor at close of each operating season. Refer to
motor manufacturer’s recommendations.
Do not start motor before determining that there will be no interfer-
ence with free rotation of the fan drive.
The motor should be run for three hours at least once a month to dry out
windings and relubricate bearing surfaces. Refer to
Electric Motors on
Cooling Towers
, Manual 92-1475.
At start of new operating season, make sure bearings are adequately
lubricated before returning motor to service.
Prolonged Shutdown
If shutdown period is longer than seasonal, contact your Marley Sales
Representative for additional information.
Whenever you order parts or correspond with us about your tower,
please include the tower serial number located on the tower's name
plate.
Note
Warning
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