instruction manual - BHEL Bhopal

The turrets are often individually adapted; check therefore that they are
re-mounted in correct places, which appear from the OGA drawing and ,part
list.
Assembling of bushings is carried out according to the detailed
information documents available.
2.1.9 ASSEMBLY OF VALVES
Valves which may affect the loading gauge, or will be subjected to
damages, should be dismounted before delivery. Re-mount the valves -the
positionings appear from the OGA drawing and part list. The gasketting surfaces
shall be cleaned well and new gaskets fitted. Check that all valves are closed.
2.1.10 ASSEMBLY OF COOLING DEVICES
Valves which are not dismantled like shut-off valves for radiators, coolers
and possible headers shall be provided with blanking plates during the transport.
Remove the blanking plates when the assembling of the coolers is to be
started. Check first that the valves are closed.
Check that each radiator and possible header are assembled in the correct
positions according to OGA drawing. In case of OFAF or OFWF cooler mounting
shall be done as per the relevant leaflet given in Vol.I
The shut-off valves against the transformer tank shall be closed until
the oil-filling is started.
2.1.11 ASSEMBLY OF OIL CONSERVATOR
The conservator, which may be with or without aircell is assembled
either on the transformer, or on a separate frame. Before the conservator is
assembled it shall be checked that belonging equipment -e.g. Oil-level indicator
-functions satisfactorily.
The breather is connected to the oil conservator, and it is very important
that joints and couplings in the pipe between breather and conservator are air
tight. Refer Clause 2.6 for detailed instruction for oil filling.
2.1.12 ASSEMBLY OF PIPE WORK
Pipes with flanges for connection of conservator, radiators, as well as
pipes for equalising of turrets etc. are mostly delivered completely ready for
assembling according to OGA & part list.
In certain cases -e.g. at a separately assembled oil conservator -certain
fitting and welding of pipes and flanges on site is however required. Instruction
for such assembly of external pipes is given in Clause 2.3
2.1.13 FLANGES, BLANKING PLATES
When re-mounting blanking plates, connection flanges etc., the gasketting
surface shall be cleaned well and new gaskets fitted.
Prepared By Samvet Lahari, Bhopal. Phone- 5277412