indicated. Use Pitot or electronic instrument to measure air quantities.
Set control devices to control at the points indicated. Lubricate bearings
and check the speed and direction of rotation of each fan. Check the
running current of each motor. Furnish water analysis and sufficient
chemicals to initially place the evaporative system in service. [Provide
same chemicals used at station's cooling towers.]
3.2.1
Evaporative Coolers Tests
Perform minimum 4-hour cooler efficiency tests of each cooler. Record test
data in typed tabulation form, no less than 2 days before the final tests
of entire systems indicating the following:
a.
Time, date, and duration of test
b.
Dry-bulb temperature entering and leaving the evaporizer coolers
c.
Wet-bulb temperature entering the evaporizer cooler
d.
Air quantity and static pressure
e.
Motor rpm - voltmeter and ammeter readings
f.
Air outlet velocity m/s fpm
g.
Evaporative cooler-make, model and size
3.2.2
Control Sequences
[As indicated] [Section 15901N SPACE TEMPERATURE CONTROL SYSTEMS].
3.3
SCHEDULE
Some metric measurements in this section are based on mathematical
conversion of inch-pound measurements, and not on metric measurements
commonly agreed on by the manufacturers or other parties. The inch-pound
and metric measurements shown are as follows:
Products
Inch-Pound
Metric
a.
[_____
_____
_____]
-- End of Section --
SECTION 15721N
Page 14
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