Thank you Geoff for your reply. I have the Luxtel "Stryker Xenon Lamp Replacement Guide - X7000 & X8000" which I found very useful and was guided by until recently.
When the lamp was last changed the totaled hours was noted. The lamp was going to be changed again when the total got to that number plus 500. A lable was attached to the inside of the door shutter with the date, time, and and the noted totaled hour the timer said before the bulb was changed.
Unfortunately, we have now discovered that the counter will not go beyond 1000 hrs. Does anybody out there know how to reset the counter so that it continues to count after 1000 hours is reached, or simply reset the counter to zero so that it actually stays as zero? There is a reset button which when pressed does make the counter go to zero, but when the door was shut the counter went back to original number of hours.
Failing that we will try swapping housings between lightsources again. Only the last we tried this option it was not successful for us.
We have not as yet explored the final option of leaving the housing out of the unit for extended periods of time. We will try this and see what happens.
Roxanne
