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English
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6. Trouble Shooting
6.1
Does supply voltage correspond with ballast required voltage? Dual voltage
Guide
ballasts are autoswitching.
6.2.
Ensure ballast wattage matches lamp power!
6.3
Ensure correct lamp is fitted!
6.4
Re-energizing system:
Ensure main switch is in "O" position.
Set mains switch to "I". - WAIT-
After approx. 2 seconds lamp should ignite.
6.5
If lamp does not strike, the safety circuit may be broken - check if lens door is fully
shut and the lens safety switch is activated.
6.6
Is there a good power supply to the ballast?
6.7
If a ballast / head to ballast cable / luminaire does not work then all three units
should be considered faulty.
Do not try a suspected luminaire with another ballast - you may end up with two faulty
ballasts!
To check if a ballast is good, run it with a known good luminaire and known good head
to ballast cable.
6.8
If a ballast cuts out after running a few minutes there are a number of possible
failures:
z
The lamp itself may be faulty or at the end of its life.
z
The thermal cut-out in the ballast may have activated (Red LED "TEMP" on front
plate is lit) due to extreme ambient temperature or exposure to direct sunlight in hot
summer conditions. After cooling down, the ballast will restrike the lamp
automatically. The LED "TEMP" stays lit to indicate a temperature problem. To
reset the LED the ballast must be disconnected from mains (pull out line plug or
switch off mains switch) for at least 15 seconds.
z
The ventilation might be restricted. In such a case the ballast can be used after it had
cooled down and the condition causing the overheating is removed.
z
If the power supply exceeds the limits or has spikes or drop-outs the ballast switches
off to protect itself. If running on a generator the output should be regulated
between 95 - 125V / 185 - 245V.
z
If a ballast has cut off due to a momentary supply drop-out switch the ballast "OFF"
and "ON" again. The ballast should start up as normal.
z
Earth leakage of luminaires or head to ballast cables will also cause the protection
circuit to be activated. Test the ballast with a known good luminaire. If cables are
suspect, they should be exchanged with known good cables.
If a ballast is found to be faulty ideally it should be returned together with the luminaire
and head to ballast cable to the ARRI-service location for examination.