Commissioning; Maintenance - Elster A1100 Operating & Maintenance Instructions

25
Operating & Maintenance Instructions
For connecting to the large diameter terminals, strip back the cable insulation by 26mm.
Fully insert cables into the terminals so that the insulation butts up into the counter-bored recesses in
the bottom face of the terminal block.
Using a Number 2 Phillips or flat blade screwdriver, tighten the M6 terminal screws to a torque of
between 2.2N m minimum, 3.0N m maximum.
Connections to rate select and/or pulsing output auxiliary terminals should be completed with
appropriately sized cable. The M3 terminal screw should be tightened using a Number 1 Phillips or
flat blade screwdriver to a maximum torque of 0.45N m.
Note the requirements to adequately fuse the TOU Circuit.
18

COMMISSIONING

WARNING
Commissioning must only be carried out by appropriately trained and qualified personnel.
Check that the supply rating on the meter nameplate corresponds to the system rating.
Removal of the meter cover seals will invalidate certification.
With the system de-energised, check the cable connections are secure and correct to the wiring
diagram fitted under the terminal cover
Refit and seal the terminal cover. Energise and load the system
At power-up, ensure all segments of the LCD show in the test pattern
Check that the display is cycling through the display sequence
Check that the pulse LED is illuminated or flashing
Check the operation of the pulse output (if fitted)
Check operation of the serial data output (if fitted)
Carry out load checks as necessary
Confirm the operation of rate select for 2-rate meters
Note: After an initial 'test' period, the meter will only respond to a rate change if at least 10 minutes
has elapsed since the meter last changed rate.
19

MAINTENANCE

No maintenance is necessary during the meter's normal working life.