Why output fades quietly
Maintenance on a commercial logo projector is mostly about noticing. Because the loss is gradual, the comparison that matters is against how it looked on day one, not against how it looked last week. Take a reference photo at install and repeat it annually under the same conditions.
How to clean without damaging coatings
Frequency depends on the site, not the product. A commercial logo projector in a clean lobby needs attention once a year; one in a kitchen, a workshop or beside a road needs it quarterly. Set the interval from the environment and write it into the site calendar.
Gobo inspection and replacement
The gobo is the part that carries the image and the part most often blamed for a fault that is elsewhere. Check it against a light before assuming the optics have failed: a hairline crack or a patch of degraded coating shows up clearly when you tilt it. Keep the reference code so reorders are exact.
- Inspect against a light at an angle for cracks and crazing
- Look for marks that show in the image but not on the glass
- Replace rather than clean a degraded coated gobo
- Record the reference code for exact reorders
The half-yearly inspection
Heat and water are the two things that kill a commercial logo projector early. Check that ventilation paths are clear, that seals are still seated, and that the cable entry is intact. If the unit is in an enclosed void, measure the air temperature around it — the LED life figure assumes it is not cooking.
Seasonal and event checks
Seasonal checks are about duty cycle, not optics. Run it for the length of the event, at the hour it will run, and confirm it does not cut out. Clean the optics at the same time and you will start the season at full output.
- Run a full duty cycle at the working hour
- Check for thermal cut-out after an hour or two
- Clean the optics before the season starts
- Confirm the timer and switch settings
Spares worth holding
Keep the small things: a spare gobo, the handset, and the artwork reference number. A commercial logo projector is not a device that fails often, and when it does, the cause is usually one of those three — all of which are cheap to hold and expensive to wait for.
- A spare gobo, cut from the same artwork file
- A spare control handset or remote
- The artwork reference and reorder contact
- The install record with throw and settings
