Immersion Cooling Facts
The ReFlex coolant system is designed to be service free. The proprietary hydrocarbon coolant
does not evaporate, should not need refilling and has an operational life of >10 years.
DO NOT ADD COOLANT TO THE R15. Please contact Cineo Service if you are concerned about a
loss of coolant, contamination of the coolant or need replacement coolant.
The R15 coolant (like most fluids) will absorb dissolved air if left unused for a longer period of
time. Air can also be introduced during transport when the system is agitated and exposed to
large swings in temperature and altitude. Seeing some bubbles in the LED Tower is normal after
an R15 unit has been stored or transported. The R15 is designed to remove this dissolved gas over
time for this, using an internal auto-degassing system.
If there is a higher than desired quantity of bubbles after transport or long storage period,
degassing can be done prior to rigging; however, this is not a necessary process. Follow these
steps:
• Turn on light and set DIM to 30-50% - light and pump must be on to generate heat and
circulate the coolant thru the Auto-degassing system.
• Ideally allow R15 to run for 1 or more hours. Optimal de-gassing can take up to 8 hours
depending on how long the unit was stored or how much air was introduced during
transport.
• Again – degassing is NOT required prior to using an R15. However, after full degassing
users will notice virtually all micro-bubbles are gone and the pump sound is slightly
reduced.
For maximum LED reliability and performance, the temperature of the LEDs in the R15 are carefully
managed and monitored. The R15 has 4 thermal sensors and 2 independent thermal management
and protection circuits:
1. Fail Safe - Thermal Relay and LED Shut Off
If the LED array exceeds 95c, this relay immediately cuts off the power to ALL the LEDs
while leaving the control panel and rest of the R15 operational (fans and coolant pump) so
you can review what the error might be. Causes of a thermal shut off could be:
a. R15 is being operated in an environment that exceeds its 40C max operating temp
b. Pump is not functioning properly
c. Fans are not functioning properly
d. Coolant level is insufficient
If the R15 performs a thermal relay shut off and the cause is not identified, we recommend
turning off the unit until you have contacted Cineo service. It will reset itself after it cools,
but repeated thermal shutoffs would indicate the unit is not operating properly and could
be damaged thru continued operation.
2. Digital Thermal Sensors
Additionally, the R15 has 5 internal digital temperature sensors that monitor and control
the thermal system operation. The R15 uses these sensors to reduce the fan speed when
temperature allows to minimize fan noise.
Output from these sensors can be viewed in the TOOLS menu, as well as the actual fan
speed and pump speeds.
