Ampcontrol Pty Ltd
– ABN 28 000 915 542
EFL PROTECTION RELAY USER MANUAL
MAG-178 Version 5
– MARCH/2020
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 21 of 23
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7
SERVICE, MAINTENANCE & DISPOSAL
7.1 Equipment Inspections
A number of external system based checks should be completed
on a regular basis. These ‘routine
inspections’ must be carried out by suitably trained people with knowledge of the EFL Relay and the
systems into which it is fitted. Routine inspections may take the form of either visual-only checks, or
visual and ‘hands-on’ checks.
7.1.1 Visual Only Inspections
A basic visual inspection focuses on looking at the installation for signs of physical damage, water or
dust ingress and the condition of cables and labels. This type of inspection may involve opening cabinets
to gain access to the EFL Relay and other equipment. This level of inspection may also include cleaning
display windows that have become obscured by dirt.
Observations would typically be:
Check for physical damage.
Check that enclosure housing relay is sealed and free from water and dust ingress. Confirming
the IP rating has not been compromised.
Check that connected cables are free from cuts, abrasions and obvious signs of damage. Cable
restraints are in good order and correctly fitted.
Check that no modifications have been carried out to installed equipment.
7.1.2 Hands-On (Detailed) Inspections
A more detailed inspection would include all of the elements of a visual inspection, plus some checks
that cover the integrity of connections, fixtures and fittings such as:
Verify that the EFL, and Barrier if installed, are secured in place.
Check wiring against latest signed off schematics
Verify all electrical connections are secure with no loose screw terminals or DIN rail terminals not
fitted to rails etc.
7.2 Equipment Maintenance
WARNING!
The EFL Relay and Barrier have no user-serviceable parts.
All repairs must be carried out by Ampcontrol only
.
If a fault develops, return the unit to Ampcontrol for repair. It is essential
that
no attempt be made to repair the unit
as any attempt to
dismantle or repair the EFL Relay or Barrier can
seriously
compromise the safety of the unit and voids product warranty
.
It is recommended that the electrical protection system incorporating the EFL Relay be subject to regular
functional tests at intervals determined by risk assessment or FMEA. These intervals typically coincide
with periodic maintenance checks and will cover (but not limited to) tests such as:
Functional testing of the Earth Fault Lockout (EFLO) protection function.
Functional testing of the Frozen Contactor (FC) protection function.
Functional testing of the Undervoltage (UV) protection function.
