require complete servicing at regular intervals to ensure
smooth functioning. There are a lot of parts which have
to be serviced regularly, and the most important of
all is the servicing of the over-head machine in the
machine room. Negligence of service and maintenance
in traction lifts can lead to some serious accidents
as you might be aware by reading related articles in
the news papers.
Hydraulic elevators require very less maintenance as
not many parts are required for the operations. Hydraulic
pump which is the main unit is used to pressurize the
cylinders with oil, the up and down travel is done by
cylinders which does not involve any parts with have
friction within them.