Knut Posted February 16, 2004 Share Posted February 16, 2004 Hi I have some problems with our ELite Servospot 250+ wich are similar to Robe Spot 250 XT. One of them seem to be defect - when it runs about 15min´s it´s turning of showing heat in it´s display. I have checked the vents and the Optic related (IR diode) but there is no NTC in it nor another temperature related things... If anyone has an idea Regards Knut Link to comment Share on other sites More sharing options...
Knut Posted February 18, 2004 Author Share Posted February 18, 2004 Hi seemed that I expect too much from you...has nobody any ideas whats wrong with our fixtures ? TIASebastian Knut Link to comment Share on other sites More sharing options...
ziggyP Posted February 18, 2004 Share Posted February 18, 2004 I don't know the ELite Servospot 250+. is it electronic or inductive ballast for the lamp ?. both types usually have thermal cutouts. The electronic type you can probably see the thermal device. The inductive type can have a thermal trip inside of the windings and can be very difficult to see. if you check continuity just after the lamp cuts off that will tell you. not much info but hope it helps. ziggy Link to comment Share on other sites More sharing options...
Bryson Posted February 18, 2004 Share Posted February 18, 2004 I'm assuming you've checked that any fans that it has (I don't know that model) are still running and clear of dust and muck. I'm also assuming that the place they're running in isn't especially hot for any reason. If so, sounds like it must be either the sensor or the electronics that interpret the signals from the sensor. Are they still in warranty? Call the manufacturer, either way, and explain the problem, they'll have the part you need, and if you're in warranty, they should send you it for free. Link to comment Share on other sites More sharing options...
Knut Posted February 19, 2004 Author Share Posted February 19, 2004 I'm assuming you've checked that any fans that it has (I don't know that model) are still running and clear of dust and muck. I'm also assuming that the place they're running in isn't especially hot for any reason. If so, sounds like it must be either the sensor or the electronics that interpret the signals from the sensor. Are they still in warranty? Call the manufacturer, either way, and explain the problem, they'll have the part you need, and if you're in warranty, they should send you it for free.Hi, they aren´t in warranty - they are luckey two years old but the other 5 still running correctly. I am afraid that the manufacturer ELite is bust. The Spots have a inductive ballast for the lamp and there isn´t any muck in the case a fans are changed. Link to comment Share on other sites More sharing options...
Ike Posted February 19, 2004 Share Posted February 19, 2004 Have the fans on the working ones been replaced also and how are they supplied? I only ask as some systems monitor the load of the fan and will flag up an error if this changes (ie if the fan gets jammed or is changed for a different model). Ike Link to comment Share on other sites More sharing options...
tartrazine Posted February 19, 2004 Share Posted February 19, 2004 I have some Robe Beam 250XT which sound similar. It is possible to set them so that the fan is always off, for silent running, but they do cut off after a while as they of course overheat. Is the one of yours set like this perhaps? Is the fan actually running at all? Nick Link to comment Share on other sites More sharing options...
Knut Posted February 20, 2004 Author Share Posted February 20, 2004 Have the fans on the working ones been replaced also and how are they supplied? I only ask as some systems monitor the load of the fan and will flag up an error if this changes (ie if the fan gets jammed or is changed for a different model). No there was no necessity to change fans on the others - I orderd same fans as in the others ...Sometimes fans have a speed/temperature hook up you mentioned ours have none. I have some Robe Beam 250XT which sound similar. It is possible to set them so that the fan is always off, for silent running, but they do cut off after a while as they of course overheat. Is the one of yours set like this perhaps? Is the fan actually running at all? First Your right Robe Beam 250 XT is the same except zoom functions of Robe Beam2nd. No the Fan is set to "always on" Fanspeed normally is adjustable by DMX6 but we don´t need this function because rock isn´t that noise sensitve. Thanks for your tips. Link to comment Share on other sites More sharing options...
mr.purple Posted September 16, 2004 Share Posted September 16, 2004 I have had similar problems with the Robe spot 250s overheating some of my observations may be usefull to others looking at this thread. 1. It is esential that the whole of the cooling path is kept clean ....you need to take off the covers and blow out the lamp chamber. 2. Check your supply voltage four of the units which were playing up were in a club in Hull whose supply voltage was 246 volts....change the tappings to the 250 volt setting rather than the 230 volt setting. 3. An obscure one this....a set of heads were overheating and it was found to be that they spent a majority of their time upside down with the cooling fan underneath......reprogramming the lights so the fan was uppermost solved the problem. 4. It has also been suggested that for persistent problems an MSD200 can be swopped for an MSD 250 and runs cooler...I cant vouch for this as I havent tried it. Id be interested in your thoughts on the overheating matters Link to comment Share on other sites More sharing options...
Guest lightnix Posted September 17, 2004 Share Posted September 17, 2004 The advice about keeping the cooling path clean cannot be emphasised enough, so... keep the cooling path clean. Regularly clean the muck out of the fans, filter covers and any internal "ducting" type things. This especially important if the working environment contains a high level of smoke / haze. ....a set of heads were overheating and it was found to be that they spent a majority of their time upside down with the cooling fan underneath......reprogramming the lights so the fan was uppermost solved the problem.I've come across this one before, although not very often. It's still worth bearing in mind, though. As ziggyP already suggested: if all else fails, try replacing the temperature sensor; they do wear out eventually. Be sure to get the right one and don't be tempted to "upgrade" it to a higher temperature version. Link to comment Share on other sites More sharing options...
vinny baby Posted September 19, 2004 Share Posted September 19, 2004 Im glad someone brought this up. See other reply I am currently in talks with ROBE, and the problem is being addressed vince Link to comment Share on other sites More sharing options...
Stu Posted September 19, 2004 Share Posted September 19, 2004 If you think some of the cooling fans are running slower than they should be, then it might be an idea to get a can of compressed air into the fans and try to blow out whatever it is in there slowing it all down. Either that or cotton buds (etc) round the fans to pick up anything that is sticky. Stu Link to comment Share on other sites More sharing options...
vinny baby Posted September 23, 2004 Share Posted September 23, 2004 I have spoke to the service engineer at ROBE uk, (Martin). he says that most prblems have been occuring with fixtures that are flown, and installed, where cleaning isnt as regular as it should be. The biggest problem, is down to the user, not setting the FANS to full speed on the fixtures. ROBE fixtures have fan speed settings, to limit noise from the fixtures. The factory setting on all fixtures is set to AUTO, This however dose not meen that the fan increases speed as the fixture gets hotter. When the fixture gets to full temperture, the fan changes to full speed to give a rapid cooling effect, when the temperture lowers to the correct ambience the fan slows down again. In most cases the fan can not cool the fixture fast enough, and therefore the lamp will go out. ROBE recommend if noise is not an issue, read the manual and navigate the menu options, and turn the fans to FULL SPEED. You will then fingers crossed have no more problems. Somebody from ROBE uk, will be joining the forum, in the next couple of weeks, to give advise, and learn from those using the fixtures, on how they are getting on, and what the talk is on the block. Hope thats cleared some overheating issues. Vince Link to comment Share on other sites More sharing options...
Bryson Posted September 23, 2004 Share Posted September 23, 2004 If you think some of the cooling fans are running slower than they should be, then it might be an idea to get a can of compressed air into the fans and try to blow out whatever it is in there slowing it all down. (snip)<{POST_SNAPBACK}> Yes...but be careful doing this. If you make the fan go round you can force a back voltage down the line that supplies the fan and damage the fixture. Hold the fan stationary while blowing it out. (snip)The biggest problem, is down to the user, not setting the FANS to full speed on the fixtures. ROBE fixtures have fan speed settings, to limit noise from the fixtures. The factory setting on all fixtures is set to AUTO, This however dose not meen that the fan increases speed as the fixture gets hotter. When the fixture gets to full temperture, the fan changes to full speed to give a rapid cooling effect, when the temperture lowers to the correct ambience the fan slows down again. In most cases the fan can not cool the fixture fast enough, and therefore the lamp will go out. (snip)<{POST_SNAPBACK}> Surely this means that the Auto function just plain doesn't work very well? Link to comment Share on other sites More sharing options...
vinny baby Posted September 24, 2004 Share Posted September 24, 2004 Surely this means that the Auto function just plain doesn't work very well? Is does work, but if the outside room temperture is to high the fixture will only suck hot air over the lamp. it is reccomended that if your not using the fixture de-strike the lamp, so the fixtures stay cool. also it reccomended that only philips lamps are used, and 1.5mtr is kept clear all aound the fixture Link to comment Share on other sites More sharing options...
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