Vaisala Optimus OPT100 - Stopping Measurement; Turning off DGA Monitor for Maintenance; Verifying Safety after Repair

• Some repairs can only be performed by a Vaisala representative.
• If OPT100 DGA Monitor is sent to Vaisala for repairs, use sucient packing material to
ensure safe shipping. Pay special attention to the connections at the bottom of the main
cabinet. If both DGA monitor and OPTPSU power supply unit are sent, pack them in
separate boxes. Label "fragile".
• For any components included inside the OPT100 DGA Monitor or the OPTPSU power
supply unit, use only spare parts supplied by Vaisala.
4.6.1 Stopping measurement
1. Connect to the DGA monitor user interface and log in as an Admin user.
2. Stop the measurement mode by selecting Control > Stop Measuring.
3. Wait for DGA monitor to enter Standby mode. Depending on the stage in the
measurement cycle, stopping may take up to 60 min.
4.6.2 Turning o DGA monitor for maintenance
1. Switch the DGA monitor to standby mode.
2. Turn o OPTPSU power to the DGA monitor:
a. Turn o OPTPSU power from the external disconnection device.
b. Lock the disconnection device in the o position, if possible.
c. Attach a warning label to the disconnection device that clearly states why the power
is turned o.
3. Turn o power inside the power supply unit:
a. Open the power supply unit cabinet.
b. Turn o switch S1.
c. Turn o circuit breaker F1.
4.6.3 Verifying safety after repair
Go through the following verification steps after performing repairs on the DGA monitor.
1. If you have replaced or altered any mechanical parts of the DGA monitor cabinet or
mounting accessories, verify that:
• Cabinet can be opened and closed normally.
• Cabinet tightness is maintained.
• All attachment points are intact.
OPT100 User Guide M211858EN-U
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