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8.10
Service life
Refer Section 2.4 on page 4.
8.11
Disposal of the Product
The product is environmentally compatible.
The following materials have used to make up the device:
steel, copper, aluminium, cast-resin, glass-fibre-
reinforced thermoplastics, rubber, porcelain, greases etc.
PVC is used as an insulation material for control wire.
In as-supplied condition, the product does not
incorporate any hazardous substances.
In operation, the product does not emit by hazardous
materials or gases.
8.12
Summary of Important Instructions-
DOs
During Installation & Commissioning Stages :-
(1)
To connect the pull rod in bottom unit to
the lever of the switching shaft in the top
unit, follow instructions 5.4(vi) on page10.
(2)
Brush the contact surfaces properly before
bolting overhead terminals on flanges of
breaker. Also grease the joints & apply proper
torque on the bolts.
(3)
Check rated voltages of equipments such as
motor, closing & tripping releases mounted
in the operating mechanism with the
available auxiliary supply to be connected to
these equipments in the substation.
During service life of the breaker-
(4)
Keep door & covers firmly closed to prevent
entry of dust, moisture, insects etc.
(5)
Ensure spring charging handle & manual
handle are kept in the mechanism housing.
(6)
Decide maintenance schedule based upon
(a) no. of short circuit operations,
(b) frequency of breaker ON/OFF operations,
(c) pollution level etc.
(7)
Isolate & earth the breaker before carrying
out maintenance & ensure it is in OFF
position & springs are discharged completely
before cleaning.
During disposal of the product, care must be taken to
dismantle as far as possible in more environmentally
accepted way as recyclable & non-cyclable scraps i.e.
steel, copper, aluminium, rubber, PVC, cast-resin & glass-
fibre-reinforced materials segregated properly.
The cyclable materials like steel, copper, aluminium can
be reused. Non cyclable materials like cast-resins, glass-
fibre-reinforced etc. can be broken in to pieces & then
used as land filling materials. Also refer local legislation
for disposal of waste products.
Local customer support-Siemens office will be able to
answer any questions concerning disposal.
(8)
Depending on site conditions, inspect
–
the interior of the mechanism housing
for dust, cobwebs etc. & clean them.
–
porcelain insulators & clean them,
–
operating mechanism parts such as
plungers of releases, moving joints etc.
& clean them, and
–
functioning of space heaters.
(9)
Lubricate moving parts with lubricants
provided for the breaker.
(10)
Check insulation resistance with a megger
before putting the breaker back into service.
(11)
Keep a log-book for each breaker.
(12)
Follow instructions given in the operating
manual.
(13)
Ensure breaker operations, maintenance etc.
is done by trained persons.
(14)
Check supply & battery voltages of control
circuits regularly.
DON'Ts
(1)
Do not leave any equipments or tools in the
mechanism housing.
(2)
Do not leave incandescent lamp in ON
position when closing the mechanism
housing door.
(3)
Do not put hands or tools in operating
mechanism when breaker is electrically
operated.
(4)
Do not operate the breaker during cleaning
process.
17
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