GEM80-400
9. Maintenance and Fault Finding
Issue 3 04/99
ALSPA GEM
80-400 SERIES CONTROLLERS TECHNICAL MANUAL
Page 9-1
9.
Maintenance and Fault Finding
9.1.
General
This chapter gives details of the upkeep and general maintenance requirements
of the GEM
80-400 Controller, and includes fault finding information which can be
used in the event of either an in-service fault or faults which occur because of
ladder program development.
GEM
80 equipment requires very little maintenance. The memory support
batteries have a long life expectancy, the period of which will depend upon the
extent of their use.
9.2.
Spare Modules
The fault finding procedures rely on substitution of suspected faulty modules with
spare modules. These spare modules may be stored powered up (i.e. functional
spares). It is recommended that all spare modules are powered up every 9
months to reform any electrolytic capacitors which may be fitted.
9.3.
Cleaning and Visual Inspection of GEM
80
Cleaning and visual inspection of GEM
80 should be carried out at time intervals
determined by the customer. The equipment should be isolated from its main
supplies and associated equipment.
9.3.1. General Maintenance and Cleanliness
(1)
Periodically, dust and dirt should be removed from enclosures using a
vacuum
cleaner, brushes and soft cloths.
CAUTION...
Never blow air into an enclosure to remove dust and dirt.
(2)
Visual checks should be made for signs of wiring or component damage
and any
damaged wiring or components should be renewed.
(3)
Check all terminations within enclosures for security.
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