Measures In The Event Of Faults; Operating Faults; Disconnecting The Meter; Triage - Landis+Gyr E470 Series User Manual

Measures in the event of faults

26 Measures in the event of faults
26.1

Operating faults

26.2

Disconnecting the meter

26.3

Triage

D000058620 en a – E470 Series 3 SMETS2 100 mm – ZCX310 – User Manual and Functional Description
Issue 1.2
If the LCD window is illegible or the data readout does not function, the
following points should be checked.
Is the mains voltage present? – Are the preliminary fuses intact?
Has the minimum or maximum recommended ambient temperature been
exceeded?
Is the LCD window clear of all debris? – Not misted over, painted over or
soiled in any way.
If none of the above are causing the fault the meter should be
disconnected, replaced if required and returned to the supplier triage
centre.
Remove preliminary fuses before continuing
The connecting conductors should not be Live when removing the meter.
Electrically Live parts are a life-threatening hazard. Preliminary fuses
should be removed and kept in a safe place until all work is complete,
where they cannot be replaced by anyone unnoticed.
Proceed as follows:

Remove the company seals on the terminal cover (if fitted).

Release the terminal cover screws and remove terminal cover.

Check with a suitable voltage testing device that the phase
connections are not live. If they are live then remove the preliminary
fuses and keep in a safe place until all work is complete, where they
cannot be replaced by anyone unnoticed.

Remove the signal inputs and outputs by releasing the auxiliary
terminal screws.

Remove the phase connections by releasing the main terminal screws.
Smart meters can be returned for many reasons including damage, a failed
installation or errors in the installation process to the energy supplier triage
centre. The steps detailed below should be performed to determine the
correct actions for returned meters:
Inspection:

Inspect the outer casework of the for signs of damage, loose
casework, missing parts and terminal and case fixtures.

Tighten the terminal screws and terminal cover screw. Shake the
meter gently to determine whether any components or items are loose
inside the meter.

Inspect the terminal entry apertures for signs of damage.

Check the meter main cover seals are intact, if these are damaged or
removed it could indicate a tamper attempt.
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