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Maintenance
Procedures
CONDUIT™ DISTRIBUTION SYSTEM:
The CONDUIT™ Distribution System must be kept clean
to provide design flow. Check to see if the nozzles are
producing uniform water distribution over the wet deck
surface (Figure 2). When maintenance is required the
conduit assembly can be removed for ease of cleaning.
Simply unscrew the conduit assembly by turning it
counter-clockwise, approximately 3 turns. Clean the
conduit of loose debris and remove any deposits. Clean
any clogged nozzles. If necessary, the nozzle and rubber
grommet can be removed for cleaning. Remove any dirt
or debris that may clog the conduits/nozzles quarterly.
Conduit™ Distribution System
Figure 2
OPTIONAL BALANCE-CLEAN
(Balance Clean
®
Chamber – Series 3000 Cooling Towers Only)
The water to be cooled enters the tower through a single
connection and passes through the BALANCE-CLEAN
Chamber. The device is equipped with an internal strainer.
Located at the bottom of the BALANCE-CLEAN
Chamber is a capped cleanout connection. This can be
used to periodically purge the BALANCE-CLEAN
Chamber of dirt and debris collected by the strainer.
The strainer should be cleaned periodically as shown
in the Recommended Maintenance Schedule. This is
accomplished by un-bolting and temporarily removing
the chamber bottom plate and inspecting the strainer for
dirt and debris.
OPTIONAL EASY-CLEAN™ CHAMBER:
(EASY-CLEAN™ Chamber – Series 1500 Cooling Towers Only)
The water to be cooled enters the tower through a single
connection and passes through the EASY-CLEAN™
®
CHAMBER:
®
®
®
Chamber. The device is equipped with an internal strainer.
Located at the bottom of the EASY-CLEAN™ Chamber is
a capped clean-out connection. This can be used to
periodically purge the EASY-CLEAN™ Chamber of dirt and
debris collected by the strainer. The strainer should be
cleaned periodically as shown in the Recommended
Maintenance Schedule. This is accomplished by un-
bolting and temporarily removing the chamber bottom
plate and inspecting the strainer for dirt and debris.
COLD WATER BASIN AND SUCTION STRAINERS:
Optional Balance Clean Chamber
Figure 3
As the water circulating though the tower is cooled, it
collects in the cold water basin and passes through the
strainers into the system. The operating water level is
controlled by the make-up valve and should be maintained
at the operating water level shown in Table 2.
The operating water level in the cold-water basin will vary
somewhat with system thermal load (evaporation rate),
the bleed rate employed and the make-up water supply
pressure. Because the typical winter load is less than the
summer load, the winter evaporation rate is frequently
less than the summer evaporation rate. With this reduced
evaporation rate in winter, the water level in the cold water
basin will increase unless the float is re-adjusted. The
operating water level should be checked monthly and
the float re-adjusted as necessary to maintain the
recommended operating level.
The water level in the basin of equipment designed for
remote sump operation is a function of the circulating
water flow rate, water outlet connection size, quantity and
location, and outlet piping size and configuration. The
remote sump unit is supplied without a water make-up
assembly and the sump operating level during operation
is not adjustable.
The cold water basin should be inspected regularly. Any
trash or debris which may have accumulated in the basin or
on the strainers should be removed and, if necessary, the
float adjusted to maintain the design operating level.
5
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