OCEM 3 Series Use And Maintenance Manual page 7

Always proceed with the utmost attention. Safe intervention procedures indicated aim to protect the operator against
possible risks and to preserve the fixture from any damages.
SAFE INTERVENTION ON THE FIXTURE POWERED BY SERIES CIRCUIT
Operate in this way:
● Switch off the constant current regulator
● Disconnect the supply plug from the related socket of the secondary of the isolation
transformer
● Disconnect the plug of the monitoring circuit (if present) from the related socket of the
secondary of the dedicated isolation transformer
Carry out all the operations on the fixture and complete the intervention. At the end, proceed
to restore the operating condition:
● Reconnect the supply plug to related socket of the secondary of the isolation transformer
● Reconnect the plug of the monitoring circuit (if present) to the related socket of the
secondary of the dedicated isolation transformer
● Restart the constant current regulator
RESIDUAL ENERGIES
Always wait for the discharging time (at least 5 min) before operating on the equipments.
Check the complete de-energization of the equipments before accessing the potentially active
parts. The failure to comply all the precautions indicated implies life danger and serious
injury to persons.
GROUND CONNECTION
The body/envelope of the fixture must be connected to the earth potential before the
commissioning of the fixture.
Check that the protective conductor yellow-green is connected to the terminal predisposed
on the fixture.
In case of isolation transformer with secondary ground connected it is advisable to ground
connect the fixture at the point where the secondary of the dedicated isolation transformer
is connected to the ground.
IN CASE OF MULFUNCTION OF THE EQUIPMENTS
Do not leave the devices who have expressed evidence of deterioration or of malfunction.
Disconnect the energy sources and proceed as soon as possible to repair/replacement of
devices.
UT-MT-0972_1.0_19-09-2022 (EN)
Use and Maintenance Manual
LED PAPI 66
7