For clarifier drive units, which are almost always located
outdoors, condensation presents a dangerous problem for the lubrication system. Most
units of current design have a condensate bailing system to remove water from the
gear housing by displacement. These units should be checked often for proper
operation, particularly during seasons of wide air temperature fluctuation.
Pumps incorporate many types of seals and gaskets
advice can be obtained. A file containing data on general properties of materials used
can help in the choice of lubricant.
Grease Fittings. The same grease gun fitting should be provided on all
lubrication points requiring the same grease. This practice reduces the number of
grease guns required, keeps the use of improper lubricants to a minimum, and
Identifying Lubricant Items. The product symbol and identifying color
should be marked on lubricant containers and grease guns, and at or near all oil cups
and grease fittings, to assure the choice of the proper lubricant for that location.
Additional information on lubricants can be found in the publications listed
in pars. 2.2.55 and 2.2.56.
Combustion Engines. Very few water system operators actually repair
gasoline- or diesel-powered engines. However, a number of inspections and routine
procedures are needed to ensure that these engines are well maintained. A checklist
of these procedures can be found in par. 2.1.4.
Chemical Storage and Feeders
General. Different chemical feeders work on very different principles.
Each water treatment facility will require several chemical feeders to accurately control
chemical application to the process. Some general information is provided in this
section and in Section 5 under process headings that require use of chemical feeders.
Always read and follow the manufacturer's instructions for mechanical equipment.
Clean the dust-removal and the vapor-removal equipment during
every shift. Make sure that dust and moisture do not reach the chemical feeding
mechanism and cause caking or corrosion. Remove clinkers or grit not removed by