Check if you are placing junky off-brand lightbulbs resembling dollar store bulbs in the fixtures in question. Off-brand bulbs, especialy dollar store bulbs, vaperesult is probably not as much as the job. Dendrites are simple to clean off, vapeconsider  and should you do a thorough job it could also be years earlier than they return, if ever. Occasionally, an old management grows “dendrites” internally or on its case. Dendrites and “tin whiskers” can even kind on the surface of a control, causing a brief circuit to the chassis.
Be aware that mercury bulbs can be utilized with steel halide ballasts of the same wattage within the occasion the wattage is 175 to 400 watts. Lightbulbs Burn Out Prematurely and Have a White Smoky Look: This means the bulb cracked and air got in and oxidized the filament. Spritz a tiny quantity of cleaner into the management after which rotate the pot all the way back and forth quite a few instances. In schematics and vaperesult tube diagrams, the tube pins are numbered clockwise as if you’re looking on the tube from its bottom.
However you apply it, vapepresident clean up any excess and let every part dry before powering the set again up.
After reassembling it, vaporenough bend the metal tabs again down. Inside the case is a metal wiper that strikes along a curved resistive strip. Some contacts are plated with an especially skinny layer of precious metal. Avoid rubbing change contacts with anything abrasive. Check for corroded contacts on the bulbs or vapingnear in the socket.
Many fixtures are rated only for bulbs 60 watts or less. Check that you are not exceeding the maximum wattage recommended by the fixture producer. Replace the bulb. High Pressure Sodium Bulb has Short Life or otherwsie will not be Quite Right: You may have the appropriate wattage however still have the fallacious bulb for the ballast. Remove the bulb until the starter can be changed. If one bulb is glowing very dimly and vapeexpect the opposite is totally out, it is feasible for the dim bulb to be the unhealthy one and the fully-out bulb to be the great one.
Any form of salt, ash, or alkali can slowly leach into the recent quartz and cause strains, inflicting the bulb to crack.