Page 6-1
Rev. A - 04/01/2022
Maintenance
WARNING
Before performing any maintenance checks on equipment, take all
the necessary safety precautions to immobilize the car and
counterweight to prevent any unintended movement during the
maintenance period that may result in injury or death!
General
To keep equipment functioning efficiently, good maintenance practices must be established,
observed, and maintained. Systematic inspections of the equipment should be scheduled, and
records kept of these inspections. Monitoring these records will indicate any sign of a potential
issue.
Each installation has its own special conditions, so it is not possible for HWEC to outline an
overall plan for periodic maintenance. HWEC would recommend, at a minimum, yearly
inspections, but installation conditions may warrant a more frequent schedule. The
maintenance contractor will need to make the final determination.
Cleaning
Dirt, dust, excess lubrication, and moisture are the greatest enemies of electrical equipment
and of maintenance teams in general. Dirt and dust layers on a machine can prevent heat
dissipation, which can lead to overheating and eventual insulation breakdown. Many types of
dust in an elevator machine room are electrically conductive and can also lead to insulation
failure. Dust and dirt can draw moisture to unpainted surfaces such as brake rods causing
oxidation that can cause brake faults. Excess lubrication can draw dust and dirt as well.
Dust and dirt can be removed from surfaces with a dry, lint-free cloth, or with suction. With
suction, however, care must be taken to not build up or discharge static electricity while
cleaning. Dry, compressed air (at less than 50psi) may also be used to remove dirt and dust,
however, this must be closely monitored as the compressed air will re-suspend the dust and
dirt in the machine room atmosphere.
Section
6
