User manual

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Semi-Annually: If equipped, check the belt tension and condition.
If equipped with dampers, lubricate jack shaft bearings and tiebar linkage with
silicone lubricant. If dampers are equipped with pneumatic or electric actua-
tors, the manufacturer's recommended maintenance procedures should be
observed. If dampers are exposed to heavy dust-laden air, occasional flushing
of the bearings with water is recommended.
Clean and disinfect cooling tower with biocides. Systems with biofouling, high
general bacterial counts, or positive cultures of legionella may require additional
cleaning. Refer to “Fluid Cooler Cleaning” section—page 21. Consult your
water treatment expert as to prudent biological evaluation testing.
Geareducer models used on MH Fluid Coolers are designed for
5-year oil change intervals. To maintain five-year change intervals,
use only oil designed specifically for these Geareducers. If, after
five years, turbine-type mineral oil is used, the oil must be changed
semiannually. Refer to the Geareducer User Manual for oil recom-
mendations and further instructions.
Annually: Relubricate motor(s) according to the manufacturer’s instructions.
See instructions on the next page for towers with the motor located outside
the plenum option.
Check to see that all bolts are tight in the fan and mechanical equipment
region, including the fan cylinder and fan guard. Refer to Component User
Manuals for torque values.
Inspect the fluid cooler thoroughly, making maximum use of instructions given
in the separate user manuals. Check structural bolted connections and tighten
as required. Make preventive maintenance repairs as necessary.
Check to see that all bolts are tight in the fan and mechanical equipment
region, including the fan cylinder and fan guard. Refer to Component User
Manuals for torque values.
Every 5 Years: If equipped, change Geareducer oil. Refer to the Geareducer
User Manual for instructions.
Maintenance
Note