iTD uni-cart Mode D'emploi page 40

The control procedure for the manual self-test is as follows:
•
An insulation error is simulated, the yellow LED (signals exceeding dielectric resistance) glows,
•
a warn signal (2.4 kHz) is activated. Both signals stop after approx. 5 s.
Following this, a temperature error is simulated. The yellow LED (signals exceeding
temperature) glows, a warn signal (2.4 kHz pulse tone) is activated. Both signals stop after
approx. 5 s.
An error situation is recognized as follows:
•
In case of an insulation error, the yellow LED (signals exceeding dielectric resistance) glows
permanently, the warn signal with 2.4 kHz is activated permanently. The warn signal can be
deactivated through the reset-button for fault release. The LED glows until the error is
•
eliminated.
If the earth-leakage-guard is turned "OFF" in the meantime and the error is not eliminated,
when turning the ELG back "ON" the above described procedure begins anew.
With the occurrence of an isolation error the acoustic and optical alarm stays activated (even
if the isolation error is corrected on its own) until deactivated through the fault release:
First activation of the fault release: acoustic alarm is deactivated
Second activation of the fault release: optical alarm is deactivated
•
In case of a temperature error, the yellow LED (signals exceeding temperature) glows
permanently and the warn signal with 2.4 kHz is activated intermittent. The warn signal can be
deactivated through the reset-button for fault release. The LED glows until the error is
eliminated. If the earth-leakage-guard is turned "OFF" in the meantime and the error is not
eliminated, when turning the earth-leakage guard back ON the above described procedure
•
begins anew.
Should an insulation error and a temperature error occur simultaneously, the dielectric
resistance fault has priority (acoustic).
Self test for the Earth-Leakage Guard
In addition to the manual self-test, during operation the earth-leakage-guard repeats the self-test in
a time cycle of 8 hours and each time the unit is turned "ON".
From outside, you will not notice the self-test, the time period for this process is approx. 1.5
seconds. In case of fault, the green LED (power on control) blinks in a frequency of 0.5 Hz and
with the same frequency an acoustic alarm is activated. The fault signal can not be deactivated
through the reset-button.
3.6.4 Trouble shooting
Do not attempt to repair on your own. Warranty will be invalid if unauthorized repair has been
carried out. Due to safety reasons repair and maintenance may only be done by the manufacturer.
Please note:
For further technical data and information, please refer to the separate and comprehensive
instructions for use, enclosed with the product, isolating transformer and insulating monitor.
Operating manual uni-cart, pro-cart, duo-cart, compact-cart, classic-cart and endo-cart 03/2011
Electrical safety
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