Frayed wire

May cause shorting; use tape to secure frayed ends


Sound of arcing, lights flicker


Table 14.5 Problems and solutions: lights, windows, and reflective surfaces.

Component Problem

Initial Maintenance Action

Light Illuminate unused space

Flickers (fluorescents) Too little light Ballasts buzz Smoking

Wall Dirty or greasy

Painted with dark paint Floor Hard to keep clean

Window Dirty

Remove light and store for later use elsewhere Replace quickly

Increase lighting to acceptable levels Adjust voltage or change ballast types

Replace ballast; check contacts and electrical wiring; do not use until condition is remedied Clean

On next painting use brighter paint Examine possibility of changing floor surface

Clean, if used for light; otherwise, consider boarding over to prevent solar gain and heat loss a leak of 1 cup/min of water that has been heated from 55°F to 180°F uses about 30 million Btu/yr. This is approximately equivalent to 30,000 ft3 of natural gas.

Part of the description of this system should include hot-water temperatures throughout the facility. Hot-water temperatures should be kept at a low level unless there is some good reason for keeping them high. It is also unlikely that water needs to be kept hot during weekends. A further area for improved maintenance is in the insulation of hot-water tanks and lines. If a line or tank is hot to the touch, it should probably be insulated, both for the energy saved and for safety. Adding 1 in. of insulation to a water main carrying 150°F water can save as much as $1.60 per foot per year, depending upon the fuel used as a heat source. Heat-transfer surfaces should also be examined—any fins or radiators that are plugged up with debris or dirt are causing the hot-water heater to consume more energy. Table 14.6 gives some additional troubleshooting suggestions for the initial maintenance.

Air Compressors and the Air Distribution System

Compressed air usually serves one of three functions: as a control medium, for cleaning, or as a source of energy for tools or machines. As a control medium, it serves to regulate various parts of heating, ventilating, and air-conditioning systems. In cleaning, compressed air can be used to dry materials or blow away various kinds of dirt. And it can be a convenient source of energy for tools or for various kinds of hydraulic equipment. All three uses are affected badly by line leaks and by poor compressor performance. When a pneumatic control system for building temperature develops leaks, the usual result is that only hot air comes into a room. Thus this kind of leak creates two kinds of energy waste: excess running of the compressor and excess heating. If the air is used for cleaning, the affect of a moderate leak

Table 14.6 Problems and solutions: hot-water distribution system.



Initial Maintenance Action



Fix; replace with spring-actuated units

0 0

Post a comment