English
- 21 -
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
Connect ballast to power supply and test earth (LED "PE" has to be on).
6.5
Re-energizing system:
Ensure ON/OFF Switch is in "OFF" position.
Set ON/OFF switch to "ON". Switch should now illuminate. - WAIT-
After approx. 5 seconds lamp should ignite.
6.6
If lamp does not strike, the safety circuit may be broken - check if lens door
is fully shut, the lens safety switch is activated and the on/off switch
is in “ON”
position.
6.7
Is there a good power supply to the ballast?
6.8
Is the ballast main circuit breaker in
“ON” position?
6.9
Change in brightness caused by CCL function switching off.
The CCL function (compensation of cables losses) increases the power
consumption of the electronic ballast. When using long head to ballast cables,
this could lead to release of protective devices in the used power supply. To
prevent the associated loss of light, the CCL function is disabled automatically if
the following limits of input current are exceeded:
In 115 V voltage range, the threshold is 47 A, in the 230 V range it is 30 A.
The CCL function remains disabled until the ballast is switched off in order to
avoid repeated fluctuations of brightness.
6.10
If a ballast / head to ballast cable / lamphead does not work then all three
units should be considered faulty.
Do not try a suspected lamphead with another ballast - you may end up with
two faulty ballasts!
To check if a ballast is good, run it with a known good lamphead and known
good head to ballast cable.
6.11
If a ballast cuts out after running a few minutes there are a number of
possible failures:
The lamp itself may be faulty or at the end of its life.
The thermal cut-out in the ballast may have activated (LED "
TEMP
" on front
plate is lit) due to extreme ambient temperature or exposure to direct
sunlight in hot summer conditions.
The free inflow and outflow of the cooling
air might also be restricted. After eliminating the cause for overheating and
the ballast has cooled down again, it will strike the lamp again automatically.
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 105
– 125 V resp. 185 – 245 V. 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.
Earth leakage of lampheads or head to ballast cables will also cause the
protection circuit to be activated. Test the ballast with a known good
lamphead. 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
lamphead and head to ballast cable to the ARRI-service location for
examination.
