MIL-HDBK-1164
b)
While the slaker is out of service each week, clean grit out of each
compartment. Wipe off the outside of the slaker with an oily rag. (The thin film of oil
prevents the adherence of moisture or lime solution and thus protects paint.) Clean the
vapor-removal system and check the mechanism for proper functioning. Clean all
appurtenances.
c)
Each month, check agitators, stirrers, and heat exchangers;
replace any impellers on baffles in front of the heat exchanger that show appreciable
wear. Inspect and repair, or replace as necessary, all wiring defects or metal
deteriorations. Tighten bolts, eliminate vibration, tighten belts, and paint the equipment
where necessary. Every 1,000 to 1,500 hours, lubricate the support bearing-drive with
grease (do not use oil).
d)
Overhaul lime slakers each year. Drain and clean the slaker and
dust-removal system. Check the slaker bottom and sides for wear and repair them as
necessary. Paint the exterior and inside top edges of the slaker lids to protect them
from corrosion. Check the for leaks and scale in the heat exchanger. Clean the
thermometers and check their accuracy. Clean and lubricate all bearings. Repair
controls, floats, piping, screens, valves, and vapor-removal equipment. Paint all
equipment where necessary.
11.8.3
Gas Chlorinators. The operator should be familiar with the equipment to
be maintained. An instruction book is furnished with every chlorinator; consult it for
specific steps to follow in servicing. Should the book be lost, the manufacturer can
supply a duplicate (as long as the model and serial numbers are included with the
request for replacement). Follow the manufacturer's suggestions for O&M. This
paragraph offers general maintenance procedures that apply to all gas chlorinators. A
troubleshooting chart for solution-feed, vacuum-operated gas chlorinators is included
as Table 42. General maintenance procedures for chlorination equipment are
summarized in Table 43.
a)
Inspect Chlorinator for Leaks. Examine the chlorinator and all
piping for chlorine or water leaks each day. All chlorine leaks are serious because they
increase rapidly in size and cause extensive corrosion and damage. Red discoloration
at gas header connections means that a leak is corroding the fittings. Use an
ammonia-water bottle to locate the chlorine gas leak. Do not pour ammonia water on
the suspected leak. Rather, waft the open bottle near the suspected leak. If chlorine
vapor is present, a dense white cloud will appear. Use litharge and glycerine cement
or Teflon tape in making all metal-threaded pipe connections. Do not use grease or oil.
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