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NRG 26-61 - Installation & Operating Manual -
819874-00
Bringing into service
Checking the level display by raising or reducing the level
Incorrectly installed or bent level electrodes result in a loss of function that can
jeopardise plant safety.
Therefore, proceed as follows when bringing into service and when replacing the NRG
26-61 level electrode:
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Check the LW and HW limiter switchpoints by exceeding the upper or lower level at the
plant’s operating point.
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Never start up any plant without first checking that switchpoints are correct.
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The NRG 26-61 level electrode may only be repaired by the manufacturer, GESTRA AG.
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Only replace a faulty device with an identical device from GESTRA AG.
Checking the limiter switchpoints by initiating a test function
Check the AL.Lo and AL.Hi alarm limits of the limiter function by initiating the test function with the rotary
knob, see page 50, Test table.
In this case, the equipment must behave as if there were an alarm.
Lockout function
If the installation requires a lockout function, this must be implemented in the downstream
(safety) circuit. This circuit must conform to the requirements of EN 50156.
