IDC2 EVAPORATIVE CONDENSERS
OPERATION
140.940-IOM (DEC 13)
Page 12
NOTICE
After 24 hours of operation under thermal load, perform
the following services:
ü
Check the unit for any unusual noise or vibrations.
ü
Check the operating water level in the cold water basins.
ü
Adjust makeup valve if necessary.
ü
Check the belt tension and readjust if necessary.
ü
Inspect the spray nozzles and heat transfer section.
ExTENDED SHUTDOWN
WARNING
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.
Perform the following services whenever the unit is shut
down in excess of three days:
•
If the unit is mounted on vibration isolators or isolation rails
(by others), refer to the manufacturer’s guidelines before
loading/unloading weight from the unit.
•
Drain the cold water basin and all the piping that will be
exposed to freezing temperatures. Heat trace and insulate
all exposed piping.
•
Clean all the debris, such as leaves and dirt, from the interior
and exterior of the unit.
•
Leave the cold water basin drain open so rain and melting
snow will drain from the unit.
•
Clean the basin strainer and reinstall.
•
Cover the fan discharge to keep out dirt and debris.
•
Lubricate the fan shaft bearings, motor base, and motor base
adjusting screw.
•
Close the shutoff valve in the makeup water line (supplied
by others) and drain all exposed makeup water piping. Heat
trace and insulate all exposed piping.
•
Inspect the protective finish on the unit. Clean and refinish
as required. Refer to “Corrosion Protection” in the Common
Operation & Maintenance Manual for more details.
•
Secure the fan motor starting device in the “OFF” position
to ensure personal safety in the case of future inspection or
service.
