secrets  to  longer  lamp  life

Excessive Starts
Avoid excessive cold starts. When a lamp is first started, the internal pressure is low. The electrodes during this time are emitting poorly, throwing or spitting off tungsten into the lamp. This causes points of contamination which can cause premature failure of the lamp. Lamps should typically be started in high power to reduce the length of time they are in the starting mode. Excessive starts cause premature darkening of the ends, resulting in a drop in output, as this darkening eventually migrates into the body of the lamp. For this reason, whenever possible, gather all of the work to be done and perform it on one lamp start.

Check Reflectors and Cooling System
Check to see that your reflectors are clean and free of distortion from the lamp’s radiated heat. Periodic cleaning and/or replacement of reflectors may be necessary to maintain maximum efficiency of both the lamp and equipment. Accumulated dirt on the blower blades blocks air flow and reduces cooling. Lamps running too hot can sag or expand causing a drop in the running voltage and wattage and a reduction in output. Cleaning the blades improves cooling which can discourage a lamp from sagging. Sometimes lamps sag unnoticeably, so it is always a good idea to rotate them periodically.

Install Lamps with Care
To lengthen a lamps life, follow the O.E.M.’s installation instructions carefully. For example, avoid finger oil on the lamp body by using a paper towel or glove. The use of an alcohol wipe is also recommended to assure clean surfaces. It is important to insure that the electrical connections are tight and not corroded. In the case with spring loaded sockets, (such as Hanovia type), it is imperative that the sockets are in good shape with proper spring tension and clean contact surfaces. Lamps that are held rigid in their mounts should not be held so tight as to restrict movement as the reflectors expand, contract and warp during operation. More attention may be needed for lamps that do not have leads for their electrical connection. With lamps in which the electrical connection is made through the mounting clamp, this area should be tight and clean. In this case, most manufacturers accommodate some flexibility with the mount. Obviously, spring clip type mounts must have good tension. Most lamps in this category are small, exposure type, and expansion is not as much of a factor.