A thermal sensor in the body of the
ColourCyc 250 LX
protects the fixture against over heating.
The sensor operates by removing power to the lamp should the operating temperature exceed the factory preset. This may be due
to several factors, including the lack of circulation around the unit, high ambient temperature, or the malfunction of an on-board fan.
The sensor will reset itself once the temperature has returned to an acceptable level, and will continue to monitor the internal tem-
perature of the unit.
The 2 fans are controlled by a servo-control system. The main PCB provides power to the fans and keeps track of the fan blade
speed. If a discrepancy exists between the fan speed and the expected fan speed, the lamp will be automatically turned off after 5
seconds of incompatible signals.
In the case of fan malfunction, after the lamp has turned off, the fan led will turn on to notify the user that there has been a fan fai-
lure. Should this occur, we recommend that you open up the projector housing and clean the fans thoroughly, as this is generally
the main cause of problems in this area.
Whilst every possible precaution has been taken to ensure the trouble-free operation of your
ColourCyc 250 LX
, the following
periodic maintenance is highly recommended. We recommend that the voltage to the unit be removed prior to any maintenance
procedure taking place.
Periodic cleaning
Even a fine layer of dust can reduce the luminous output substantially. Regularly clean all lenses, dichroic filters and the reflector
using a soft cotton cloth, dampened with a specialist lens cleaning solution.
Fans and air passages
The fans and air passages must be cleaned approximately every 6 weeks; the period for this periodic cleaning will depend, of cour-
se, upon the conditions in which the projector is operating. Suitable instruments for performing this type of maintenance are a brush
and a common vacuum cleaner or an air compressor.
The fans are located beside the lamp assembly.
Air intakes
The air intakes require regular cleaning to maximise the efficiency of the cooling system. These intakes should be cleaned approxi-
mately every 4 weeks; the period for this periodic cleaning will depend, of course, upon the conditions in which the projector is
operating. Suitable instruments for performing this type of maintenance are a brush and a common vacuum cleaner or an air com-
pressor. Should this not suffice, it may be advisable to soak the intakes in a detergent solution.
Filters and dichroics
For a thorough cleaning of the filters and dichroic lenses, it may be best to refer the unit to specialist personnel, as they are located
internally to the unit.
Periodic maintenance
Lamp
The lamp should be replaced if there is any observable damage or deformation due to heat. This will avoid the danger of the lamp
exploding.
Mechanicals
Periodically check all mechanical devices for wear and tear, replacing them if necessary. Periodically check the lubrication of all com-
ponents, particularly the parts subject to high temperatures. If necessary, lubricate with suitable lubricant, available from your coemar
distributor.
Electronic components
Check all electrical components for correct earthing and proper attachment of all connectors, refastening if necessary.
Replacing the fuse
The
ColourCyc 250 LX
is fitted with two fuses. To replace the fuse, it is necessary to remove the rear housing, as previously descri-
bed in this manual. The two fuses are located on the rear panel and the motor control circuit board. Use a multimeter to check the
fuse, replacing any faulty or damaged fuses with ones of equal value, dimensions and characteristics.
Attention
The housing may be opened as described in section 18
23. Maintenance
22. Servo-controlled fans
21. Thermal protection
28
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