Servicing Instructions; Servicing Procedure - KIRLOSKAR DV Series O & M Manual

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Servicing Instructions

o It is a precision assembly, handle with care.
o Carry out servicing preferably when the engine oil is still warm
o All threaded parts of the centrifuge require following gadgets : a 13 mm spanner, a blint knife,
a small adjustable pliers and waste cotton for cleaning.

Servicing Procedure

Unscrew top nut with a 13 mm spanner and remove centrifuge cover. See Figure above. The centrifuge
cover nut has a puller arrangement so that the cover will be lifted as you unscrew the top nut.
Hold the rotor in hand and lift rotor to remove it completely from central shaft. See Figure above.The rotor
will contain about 200 ml of oil. Drain oil from the rotor. The rotor has two bushes at its ends. Take care
while removing rotor from central shaft. The rotor should not fall; otherwise it will damage the bushes.
Unscrew rotor nut by holding rotor assembly in hand. The rotor nut can be opened by hand. If it is tight,
unscrew it with light pliers. Never grip the rotor nut tightly in clamping device like a bench vice. It may
damage the rotor body permanently. Remove rotor cover and deflector inside. For removing rotor cover,
remove the rotor nut completely, hold the rotor cover in hand and give a light blow to the rotor body at the
rotor nut end by hand. The rotor body and deflector will come out from the opposite end.
After you open the rotor, you will see cake formed sticky dirt mass all around the rotor cover from inside.
Remove the dirt by a blunt knife as shown. Clean the rotor cover and all rotors thoroughly by compressed
air. See Figure below. Clean the centrifuge central shaft also.
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