Lighting maintenance

Do a good job in the maintenance and management of lighting facilities to improve the utilization of lighting and electricity saving has an important role.

1 make full use of natural light source of natural light is the best and most people visual reaction of the economy, we must choose the correct forms of lighting, the lighting area and is required to determine the appropriate position, in order to make full use of natural light, form a good lighting environment.

2 to strengthen the lighting facilities maintenance efficiency light source with prolonging the ignition time decreases, decrease with the voltage drop, but also because of light pollution and make the flux decreases and the light curve change window to reduce the pollution of natural lighting.

Therefore, to strengthen the maintenance and management of lighting facilities to save lighting electricity plays an important role.

The luminous flux of the lamp is reduced, as shown in Figure 9 - 17. To maintain the lighting from the following aspects:

(1) periodic cleaning of lamps and cleaning cycles in different environments, see Table 9 - 14.

Cleaning cycle of different polluted environment

Environmental pollution characteristics

For example, production car and asked the workplace

Lighting device cleaning times (times / month)

Clean

The car assembly instruments, ask for electrical components, assembly workshop, laboratory, office, room design

1

General

Mechanical processing workshop, workshop and other mechanical devices

1

Serious pollution

Russian t workshop, casting workshop etc.

2

Outdoor

Road, etc

1

(2) replace the bulb regularly. The luminous efficiency of the bulb is not constant, after a certain period of time, the luminous efficiency is significantly reduced, therefore, the bulb should be regularly replaced, the replacement cycle can refer to table 9 - 15.

Bulb replacement cycle

Lamp type

Replacement time (H)

Lamp type

Replacement time (H)

Incandescent lamp

1000

Metal halide lamp

7000

Mercury lamp

10000

High-pressure sodium lamp

10000

High-pressure sodium lamp

10000

Low pressure sodium lamp

7000

(3) to ensure the operation of the rated voltage of the electro-optic source. The supply voltage has great influence on the parameters of the lamp. High voltage will reduce the life of the lamp, the voltage will reduce the power of the lamp, luminous flux, luminous efficiency, reduce the intensity of illumination. For example, 400W fluorescent high pressure mercury lamp, the voltage decreased by 10%, power decreased by nearly 20%, the illumination decreased by more than 20%. Therefore, the lighting power supply voltage is not greater than 5% of the fluctuation of the soil, even if the illumination requirements are not strictly limited to the place of not less than 10%.