Barco FLM series Service Manual page 34

3. Troubleshooting
Situation
Interruption of the liquid cooling
circuit.
The liquid cooling circuit of the light
processor is mistakenly excluded
from the main liquid cooling circuit.
Water cooling pump electrical
disconnected.
Blocked high density filter of the
heat exchanger.
No or insufficient liquid inside the
cooling circuit. The pump is sucking
air and sounds noisier then normal.
Malfunction pump of the water
cooling circuit. You don't feel any
vibrations when touching the pump
after activating the "Refill mode" via
the user interface:
Service > Refill mode >
Yes
Note: to exit the "Refill mode" you
have to switch off the projector.
P
Image 3-13
P Pump liquid cooling circuit.
C Electrical connection pump.
R Rotor of pump.
Error 7666 : "Green block temp short"
This error may be preceded by a warning. This error can only appear on the FLM HD series.
32
Solution
Check if the loop of the liquid cooling circuit is closed.
Reconnect the cooling circuit of the light processor with the pump and heat exchanger.
Check if the wire unit (ref C image 3-13) of the pump is properly connected.
Replace the blocked high density filter with a new one.
Fill the cooling circuit with liquid and expel all air. Pressurize the circuit. See "FLM
liquid cooling circuit", page 153.
• Check the electrical resistance of the pump's winding. Replace the pump if infinite.
See "Cooling pump replacement", page 197.
• Drain the liquid cooling circuit, open the pump and check if the pump is not blocked.
If so, remove the rotor (ref R image 3-13) and clean the bearings of the pump. See
"Maintaining the cooling pump", page 190.
C
R
R59770072 FLM SERIES 19/03/2007