socomec ATyS d H, Installation And Operating Manual, Page: 30 / 42

30 EN
ATyS d H - 544077E - SOCOMEC
11. PREVENTIVE MAINTENANCE
Maintenance should be planned carefully and carried out by qualified and authorized personnel. Consideration of the
critical level and application where the product is installed should form an essential and integral part of the maintenance
plan. Good engineering practice is imperative whilst all necessary precautions must be taken to ensure that the
intervention (whether directly or indirectly) remains safe in all aspects.
It is recommended to clean from dust and any residue that may be present every six months. It is also recommended to
verify the tightening torque of all connections and to operate the product in a full operating cycle (I – 0 – II – 0 – I : Auto
and Manual) at least once every year. The main contacts should be checked visually and carefully inspected for distortion
or discolour of the contacts area.
Checks
Interval
Normal environment Severe environment
Instantaneous Once 6 months Once 6 months
Periodic Once 1 year Once 6 months
Temporary Not necessary
11.1. Instantenous checks
Checks Type Details
Visual check
Discoloration of terminals due to overheating
Discoloration of insulation
Corrosion on any part of the product
Dust in or on the product
Abnormal odour from or around the product
Damage such as breakage and/or distortion
11.2. Periodic checks
Item Requirement check for… Trouble shooting and action
Insulation
materials
Contacts
enclosure
insulation
Damage or cracks
Stop operation safely and consider to replace the damaged
parts
Humidity and/or dust
If a lot of humidity and/or dust is present plan a safe
intervention to clean the product
Loose bolts Tighten the bolts at the specified torque
Arc damage on insulation
barriers
If heavy spoiling is found check the contacts for any damage
and consider to safely replace the damaged parts
Arcing
chamber
Serious damage to the Arcing
chambers
Discoloration is considered to be a normal condition but
consider to replace any parts that are broken
Serious damage to the Arcing
barriers
Consider to replace any parts that are broken or damaged.
Conductive
parts
Contacts
Damage to auxiliary contacts
Light discolour - Clean with sand paper. If serious discolour
consider to replace the contacts
Surface contact Ensure that the contact is good to avoir overheating
Damage to contacts Consider to replace the contacts
Discolouring of the contacts Clean or replace contacts depending on the damage
Loose bolts on the contacts Tighten to the specified torque
Operation
Mechanical
Operation
Moving parts dry or scratched Lubricate moving parts
Damage or rust on moving
parts
Evaluate the damage and replace the parts when safe
Damage or rust on the
springs
Replace the damage parts
Loose bolts and nuts Tighten to the specified torque
Loose or damaged E ring,
shock absorbers and/or
stoppers
Fix or replace in the right position