2. METHODS OF SEPARATIONMETHODS OF SEPARATION
01. FILTRATION01. FILTRATION
02. GRAVITATIONAL SEPARATION02. GRAVITATIONAL SEPARATION
03. CENTRIFUGAL SEPARATION03. CENTRIFUGAL SEPARATION
3. CENTRIFUGAL FORCECENTRIFUGAL FORCE
THE FORCE ACTING AWAY FROMTHE FORCE ACTING AWAY FROM
THE CENTRE OF ROTATION ON ATHE CENTRE OF ROTATION ON A
ROTATING MASS/BODY.ROTATING MASS/BODY.
CENTRIFUGAL FORCE = MRCENTRIFUGAL FORCE = MRω×ωω×ω
M = MASS OF THE BODYM = MASS OF THE BODY
R = RADIUS OF ROTATIONR = RADIUS OF ROTATION
ωω = ANGULAR VELOCITY= ANGULAR VELOCITY
4. CENTRIFUGECENTRIFUGE
THE DEVICE USE TO SEPARATETHE DEVICE USE TO SEPARATE
HEAVIER PARTICLES FROM THEHEAVIER PARTICLES FROM THE
LIGHTER ONE BY THE ACTION OFLIGHTER ONE BY THE ACTION OF
CENTRIFUGAL FORCE.CENTRIFUGAL FORCE.
5. TYPES OF CENTRIFUGESTYPES OF CENTRIFUGES
01. CLARRIFIER01. CLARRIFIER
02. CENTRIFUGAL SEPARATER02. CENTRIFUGAL SEPARATER
03. PURIFIER03. PURIFIER
6. CLARIFIERCLARIFIER
THE DEVICE USE TO SEPARATETHE DEVICE USE TO SEPARATE
SOLID PARTICLES FROM A LIQUID BYSOLID PARTICLES FROM A LIQUID BY
THE ACTION OF CENTRIFUGALTHE ACTION OF CENTRIFUGAL
FORCEFORCE
7. CENTRIFUGAL SEPARATERCENTRIFUGAL SEPARATER
THE DEVICE USE TO SEPARATETHE DEVICE USE TO SEPARATE
TWO INSOLUBLE LIQUIDS BY THETWO INSOLUBLE LIQUIDS BY THE
ACTION OF CENTRIFUGAL FORCEACTION OF CENTRIFUGAL FORCE
(WATER SEALING REQUIRED).(WATER SEALING REQUIRED).
8. PURIFIERPURIFIER
THE DEVICE USE TO SEPARATETHE DEVICE USE TO SEPARATE
TWO INSOLUBLE LIQUIDS AND SOLIDTWO INSOLUBLE LIQUIDS AND SOLID
PARTICLES AT A TIME BY THEPARTICLES AT A TIME BY THE
ACTION OF CENTRIFUGAL FORCEACTION OF CENTRIFUGAL FORCE
9. POSSIBILITIES OF GETTINGPOSSIBILITIES OF GETTING
WATER INTO FUEL/LUB OILWATER INTO FUEL/LUB OIL
01. CONTAMINATION OF MOISTURE IN TANKS.01. CONTAMINATION OF MOISTURE IN TANKS.
02. IMPURE OIL SUPPLIED BY OTHER02. IMPURE OIL SUPPLIED BY OTHER
SHIPS/EXTERNAL AGENCIES.SHIPS/EXTERNAL AGENCIES.
03. LEAKAGE FROM SHIP SIDE OR BOTTOM.03. LEAKAGE FROM SHIP SIDE OR BOTTOM.
04. THROUGH GLANDS OF PUMPS AND VALVES.04. THROUGH GLANDS OF PUMPS AND VALVES.
05. LEAKAGE FROM BILGE THROUGH HOLES IN05. LEAKAGE FROM BILGE THROUGH HOLES IN
PLATES.PLATES.
06. LEAKAGE THROUGH SYSTEM PIPE LINES.06. LEAKAGE THROUGH SYSTEM PIPE LINES.
07. LEAKAGE THROUGH OIL COOLERS/HEATERS.07. LEAKAGE THROUGH OIL COOLERS/HEATERS.
08. LEAKAGE THROUGH MANHOLE DOORS.08. LEAKAGE THROUGH MANHOLE DOORS.
10. BOWL BODYBOWL BODY
IT IS A BOWL SHAPEDIT IS A BOWL SHAPED
CONTAINER WHICHCONTAINER WHICH
CONTAINS ALLCONTAINS ALL
ROTATING PARTS LIKEROTATING PARTS LIKE
DISTRIBUTOR,DISTRIBUTOR,
CONICAL DISCS, TOPCONICAL DISCS, TOP
DISC AND THE DIRTYDISC AND THE DIRTY
OIL WHICH IS TO BEOIL WHICH IS TO BE
SEPARATED. BOTTOMSEPARATED. BOTTOM
OF THE BOWL ISOF THE BOWL IS
KNOWN AS SLUDGEKNOWN AS SLUDGE
SPACE.SPACE.
11. DISTRIBUTORDISTRIBUTOR
THIS IS A FUNNELTHIS IS A FUNNEL
SHAPED COMPONENTSHAPED COMPONENT
FITTED INSIDE THEFITTED INSIDE THE
BOWL BODY.BOWL BODY.
DISTRIBUTION PORTSDISTRIBUTION PORTS
ARE PROVIDED ON THEARE PROVIDED ON THE
FUNNEL FOR EVENFUNNEL FOR EVEN
DISTRIBUTION OF OILDISTRIBUTION OF OIL
AND RIBS AREAND RIBS ARE
PROVIDED ON NECKPROVIDED ON NECK
FOR PROPERFOR PROPER
SECURING OF CONICALSECURING OF CONICAL
DISCS RESPECTIVELY.DISCS RESPECTIVELY.
12. CONICAL DISCSCONICAL DISCS
(DISTRIBUTOR DISCS)(DISTRIBUTOR DISCS)
THESE ARE CONICAL IN SHAPETHESE ARE CONICAL IN SHAPE
WITH DISTRIBUTOR PORTS USED TOWITH DISTRIBUTOR PORTS USED TO
DIVIDE DIRTY OIL INTO THIN LAYERSDIVIDE DIRTY OIL INTO THIN LAYERS
FOR BETTER SEPARATION. THESEFOR BETTER SEPARATION. THESE
ARE ARRANGED ON THEARE ARRANGED ON THE
DISTRIBUTOR AS PER SERIALDISTRIBUTOR AS PER SERIAL
NUMBERS STAMPED ON IT.NUMBERS STAMPED ON IT.
13. TOP DISCTOP DISC
THIS IS THETHIS IS THE
TOPMOST CONICALTOPMOST CONICAL
DISC WITH A NECK.DISC WITH A NECK.
IT IS SECURED ONIT IS SECURED ON
THE DISTRIBUTOR.THE DISTRIBUTOR.
THIS SEPARATESTHIS SEPARATES
THE PASSAGE OFTHE PASSAGE OF
CLEAN OIL ANDCLEAN OIL AND
WATER.WATER.
14. BOWL HOODBOWL HOOD
((TOP COVERTOP COVER))
THIS IS USED TOTHIS IS USED TO
HOLD THE CONICALHOLD THE CONICAL
DISCS, TOP DISC ANDDISCS, TOP DISC AND
DISTRIBUTOR TO THEDISTRIBUTOR TO THE
BOWL BODY FIRMLY.O-BOWL BODY FIRMLY.O-
RINGS ARE FITTEDRINGS ARE FITTED
BETWEEN BOWL BODYBETWEEN BOWL BODY
AND BOWL HOOD FORAND BOWL HOOD FOR
PERFECT SEALING.PERFECT SEALING.
15. GRAVITY DISCGRAVITY DISC
THE GRAVITY DISCTHE GRAVITY DISC
MAINTAINS THEMAINTAINS THE
WATER SEALING INWATER SEALING IN
A CENTRIFUGE. IT ISA CENTRIFUGE. IT IS
TO BE SELECTEDTO BE SELECTED
ACCORDING TO THEACCORDING TO THE
GRAVITY OF THEGRAVITY OF THE
OIL WHICH IS TO BEOIL WHICH IS TO BE
SEPARATED. INNERSEPARATED. INNER
DIA OF THE DISC IS THEDIA OF THE DISC IS THE
SIZE OF GRAVITY DISC. SEALING BETWEEN TOPSIZE OF GRAVITY DISC. SEALING BETWEEN TOP
COVER AND GRAVITY DISC IS MAINTAINED BYCOVER AND GRAVITY DISC IS MAINTAINED BY
O-SEAL PLACED IN THE GROVE PROVIDED.O-SEAL PLACED IN THE GROVE PROVIDED.
16. LOCKING RINGSLOCKING RINGS
THERE ARE TWO LOCKING RINGSTHERE ARE TWO LOCKING RINGS
WITH LEFT HANDED THREAD. FIRSTWITH LEFT HANDED THREAD. FIRST
ONE SECURES THE BOWL HOOD TOONE SECURES THE BOWL HOOD TO
THE BOWL BODY AND THE OTHERTHE BOWL BODY AND THE OTHER
ONE SECURES THE GRAVITY DISC TOONE SECURES THE GRAVITY DISC TO
THE BOWL HOOD.THE BOWL HOOD.
17. WORM AND WHEEL GEARWORM AND WHEEL GEAR
THE VERTICAL SHAFTTHE VERTICAL SHAFT
MOUNTED WITH BOWL ASSEMBLYMOUNTED WITH BOWL ASSEMBLY
HAS A WORM EITHER CUT OR FITTEDHAS A WORM EITHER CUT OR FITTED
TO THE SHAFT MESHES WITH THETO THE SHAFT MESHES WITH THE
WORM WHEEL MOUNTED ON THEWORM WHEEL MOUNTED ON THE
HORIZONTAL SHAFT. WORM WHEELHORIZONTAL SHAFT. WORM WHEEL
IS SECURED TO THE SHAFT BYIS SECURED TO THE SHAFT BY
MEANS OF SHEER PIN TO PREVENTMEANS OF SHEER PIN TO PREVENT
THE GEAR GETTING DAMAGED INTHE GEAR GETTING DAMAGED IN
CASE OF CENTRIFUGE BEINGCASE OF CENTRIFUGE BEING
STARTED KEEPING THE LOCKSTARTED KEEPING THE LOCK
SCREWS OR BRAKE ON. THE GEARSCREWS OR BRAKE ON. THE GEAR
HAS AN INCREASING RATIO OFHAS AN INCREASING RATIO OF
1 : 4 TO 7.1 : 4 TO 7.
18. GEAR PUMPSGEAR PUMPS
THERE ARE TWO GEAR PUMPSTHERE ARE TWO GEAR PUMPS
CONNECTED TO THE HORIZONTAL SHAFTCONNECTED TO THE HORIZONTAL SHAFT
BY MEANS OF SHEER PINS. FIRST PUMPBY MEANS OF SHEER PINS. FIRST PUMP
TAKES SUCTION FROM THE DIRTY OILTAKES SUCTION FROM THE DIRTY OIL
TANK AND DISCHARGES TO CENTRIFUGETANK AND DISCHARGES TO CENTRIFUGE
(THROUGH HEATER IN CASE OF LUB OIL).(THROUGH HEATER IN CASE OF LUB OIL).
THE SECOND PUMP TAKES SUCTION FROMTHE SECOND PUMP TAKES SUCTION FROM
THE CENTRIFUGE CLEAN OIL OUTLET ANDTHE CENTRIFUGE CLEAN OIL OUTLET AND
DISCHARGES TO VARIOUS PURPOSES.DISCHARGES TO VARIOUS PURPOSES.
19. POSITIVE LOCK SCREWPOSITIVE LOCK SCREW
THESE SCREWS ARE USED TO LOCKTHESE SCREWS ARE USED TO LOCK
THE BOWL BODY WHILE OPENING THETHE BOWL BODY WHILE OPENING THE
LOCKING RINGS.LOCKING RINGS. ALWAYS APPLY BOTHALWAYS APPLY BOTH
THE SCREWS AT A TIME, TO AVOIDTHE SCREWS AT A TIME, TO AVOID
VERTICAL SHAFT FROM BENDING TOVERTICAL SHAFT FROM BENDING TO
OTHER SIDE. NEVER KEEP THE SCREWS INOTHER SIDE. NEVER KEEP THE SCREWS IN
ON POSITION EXCEPT IN CASE OF OPENINGON POSITION EXCEPT IN CASE OF OPENING
THE BOWL ASSEMBLY.THE BOWL ASSEMBLY.
20. FRICTION BRAKEFRICTION BRAKE
THIS IS FITTED ON BOTTOMTHIS IS FITTED ON BOTTOM
CASING OF CENTRIFUGE. THIS ISCASING OF CENTRIFUGE. THIS IS
USED TO BRING THE BOWLUSED TO BRING THE BOWL
ASSEMBLY TO STATIONARY WHILEASSEMBLY TO STATIONARY WHILE
STOPPING.STOPPING.
21. REVOLUTION COUNTERREVOLUTION COUNTER
THIS IS FITTED ON THE CENTRIFUGETHIS IS FITTED ON THE CENTRIFUGE
GEARBOX COVER TO COUNT THEGEARBOX COVER TO COUNT THE
REVOLUTION. COUNTING IS DONE BYREVOLUTION. COUNTING IS DONE BY
PLACING THE THUMB ON THE REVOLUTIONPLACING THE THUMB ON THE REVOLUTION
COUNTER WHICH IS ROTATING IN ACOUNTER WHICH IS ROTATING IN A
REDUCTION. THIS MAY VARY FROM RPMREDUCTION. THIS MAY VARY FROM RPM
OF 90 TO 160 WHICH WILL BE MENTIONEDOF 90 TO 160 WHICH WILL BE MENTIONED
IN THE INDIVIDUAL REFERENCE BOOKS.IN THE INDIVIDUAL REFERENCE BOOKS.
23. CONVERSION OF PURIFIERCONVERSION OF PURIFIER
INTO CLARIFIERINTO CLARIFIER
01. GRAVITY DISC IS REPLACED01. GRAVITY DISC IS REPLACED
WITH DISCHARGE COLLAR.WITH DISCHARGE COLLAR.
02. TOP DISC IS REPLACED BY02. TOP DISC IS REPLACED BY
WITHOUT NECK ONE.WITHOUT NECK ONE.
03. BOTTOMMOST CONICAL DISC IS03. BOTTOMMOST CONICAL DISC IS
REPLACED BY WITHOUTREPLACED BY WITHOUT
DISTRIBUTION PORTS ONE.DISTRIBUTION PORTS ONE.
24. OPERATIONOPERATION OFOF CENTRIFUGECENTRIFUGE
THE DIRTY OIL IS SUPPLIED THROUGHTHE DIRTY OIL IS SUPPLIED THROUGH
DISTRIBUTOR TUBE AND DISTRIBUTED BETWEENDISTRIBUTOR TUBE AND DISTRIBUTED BETWEEN
THE LAYERS OF DISCS. WATER AND DIRT BEINGTHE LAYERS OF DISCS. WATER AND DIRT BEING
HEAVIER THROWN OUTWARDS DUE TOHEAVIER THROWN OUTWARDS DUE TO
CENTRIFUGAL FORCE. AS MORE OIL IS SUPPLIEDCENTRIFUGAL FORCE. AS MORE OIL IS SUPPLIED
THE OIL WILL FORCED TO MOVE TOWARDSTHE OIL WILL FORCED TO MOVE TOWARDS
CENTRE AND COMES OUT THE PORES BETWEENCENTRE AND COMES OUT THE PORES BETWEEN
DISTRIBUTOR AND TOP-DISC NECKS, AND THEDISTRIBUTOR AND TOP-DISC NECKS, AND THE
WATER ALONG WITH DIRT COMES OUT THROUGHWATER ALONG WITH DIRT COMES OUT THROUGH
THE GAP BETWEEN TOP-DISC AND GRAVITY DISC.THE GAP BETWEEN TOP-DISC AND GRAVITY DISC.
PURIFIED OIL PASSES THROUGH CLEAN OILPURIFIED OIL PASSES THROUGH CLEAN OIL
OUTLET.OUTLET.
25. IMPORTANCE OF GRAVITYIMPORTANCE OF GRAVITY
DISCDISC
THE GRAVITY DISC MAINTAINS THE BACKTHE GRAVITY DISC MAINTAINS THE BACK
PRESSURE OF WATER, THUS IT ENSURES THEPRESSURE OF WATER, THUS IT ENSURES THE
INTER PHASE LINE OF WATER AND FUEL. IF THEINTER PHASE LINE OF WATER AND FUEL. IF THE
DIA OF THE DISC IS INCREASED THE BACKDIA OF THE DISC IS INCREASED THE BACK
PRESSURE WILL REDUCE AND THE INTERPRESSURE WILL REDUCE AND THE INTER
PHASE LINE WILL SHIFT AWAY FROM THEPHASE LINE WILL SHIFT AWAY FROM THE
CENTRE, AND THE CLEAN OIL MAY GO ALONGCENTRE, AND THE CLEAN OIL MAY GO ALONG
WITH WATER. IF THE DIA IS SMALL THIS WILLWITH WATER. IF THE DIA IS SMALL THIS WILL
MOVE TOWARDS THE CENTRE AND WATER MAYMOVE TOWARDS THE CENTRE AND WATER MAY
FIND THE WAY INTO CLEAN OIL.FIND THE WAY INTO CLEAN OIL.
26. CLEANING OF BOWLCLEANING OF BOWL
IT IS ESSENTIAL TO CLEAN THE TOTAL BOWLIT IS ESSENTIAL TO CLEAN THE TOTAL BOWL
ASSEMBLY WHEN IT IS CHOKED WITH SLUDGE, TOASSEMBLY WHEN IT IS CHOKED WITH SLUDGE, TO
OBTAIN BETTER QUALITY OF PURIFICATION.OBTAIN BETTER QUALITY OF PURIFICATION.
01. STOP CENTRIFUGE AND APPLY BRAKE.01. STOP CENTRIFUGE AND APPLY BRAKE.
02. ENGAGE POSITIVE LOCK SCREWS.02. ENGAGE POSITIVE LOCK SCREWS.
03. OPEN LOCKING RINGS USING C - SPANNERS.03. OPEN LOCKING RINGS USING C - SPANNERS.
04. DISMANTLE DISTRIBUTOR, CONICAL DISCS,04. DISMANTLE DISTRIBUTOR, CONICAL DISCS,
TOP DISC AND TOP COVER.TOP DISC AND TOP COVER.
CONT…..CONT…..
27. CLEANING OF BOWLCLEANING OF BOWL
05. CLEAN BOWL, DISTRIBUTOR, CONICAL05. CLEAN BOWL, DISTRIBUTOR, CONICAL
DISCS,TOP DISC, TOP COVER AND GRAVITY DISCDISCS,TOP DISC, TOP COVER AND GRAVITY DISC
BY USING HOT WATER AND CALICO CLOTH.BY USING HOT WATER AND CALICO CLOTH.
NEVER USE MUTTON CLOTH ORNEVER USE MUTTON CLOTH OR
JUTE FOR CLEANING.JUTE FOR CLEANING.
06. ASSEMBLE BOWL ASSEMBLY IN PROPER06. ASSEMBLE BOWL ASSEMBLY IN PROPER
SEQUENCE AND START CENTRIFUGE.SEQUENCE AND START CENTRIFUGE.
07. CHECK FOR PROPER FUNCTIONING OF07. CHECK FOR PROPER FUNCTIONING OF
CENTRIFUGE.CENTRIFUGE.
28. PREPRE--CHECKSCHECKS FORFOR STARTINGSTARTING
CENTRIFUGECENTRIFUGE
01. CHECK SURROUNDINGS.01. CHECK SURROUNDINGS.
02. ENSURE CENTRIFUGE IS CORRECTLY BOXED02. ENSURE CENTRIFUGE IS CORRECTLY BOXED
UP.UP.
03. ENSURE BRAKE AND POSITIVE LOCK SCREWS03. ENSURE BRAKE AND POSITIVE LOCK SCREWS
ARE OFF.ARE OFF.
04. HAND TURN CENTRIFUGE FOR FREENESS.04. HAND TURN CENTRIFUGE FOR FREENESS.
05. CHECK FOR SYSTEM INTACTNESS.05. CHECK FOR SYSTEM INTACTNESS.
06. CHECK TANK SOUNDINGS.06. CHECK TANK SOUNDINGS.
29. STARTINGSTARTING OFOF CENTRIFUGECENTRIFUGE
1.1. ENSURE SUCTION AND DISCHARGE VALVES AREENSURE SUCTION AND DISCHARGE VALVES ARE
CLOSED.CLOSED.
2.2. FILL UP BOWL WITH CLEAN WATER.FILL UP BOWL WITH CLEAN WATER.
3.3. SWITCH ON CENTRIFUGE MOTOR.SWITCH ON CENTRIFUGE MOTOR.
4.4. WAIT FOR 2 TO 3 MINUTES FOR ATTAINING THEWAIT FOR 2 TO 3 MINUTES FOR ATTAINING THE
DESIRED RPM.DESIRED RPM.
5.5. SLOWLY OPEN SUCTION AND DISCHARGE VALVES.SLOWLY OPEN SUCTION AND DISCHARGE VALVES.
6.6. CHECK FOR SPLASHING IN TOP CASING SIGHT GLASS.CHECK FOR SPLASHING IN TOP CASING SIGHT GLASS.
7.7. ENSURE OIL IS NOT COMING THROUGH WATERENSURE OIL IS NOT COMING THROUGH WATER
DISCHARGE LINE.DISCHARGE LINE.
8.8. SWITCH ON POWER SUPPLY/OPEN STEAM TO THESWITCH ON POWER SUPPLY/OPEN STEAM TO THE
HEATER IN CASE OF LUB OIL CENTRIFUGE.HEATER IN CASE OF LUB OIL CENTRIFUGE.
30. CHECKSCHECKS DURINGDURING RUNNINGRUNNING
– LUB OIL TEMP. TO BE MAINTAINED 65LUB OIL TEMP. TO BE MAINTAINED 65oo
C.C.
– CHECK FOR ANY ABNORMAL NOISE/SOUND.CHECK FOR ANY ABNORMAL NOISE/SOUND.
– ENSURE THERE IS NO LEAKAGE IN THE SYSTEM.ENSURE THERE IS NO LEAKAGE IN THE SYSTEM.
– ENSURE ONLY OIL IS COMING THROUGH OILENSURE ONLY OIL IS COMING THROUGH OIL
OUTLET.OUTLET.
– ENSURE NO OIL IS COMING THROUGH WATERENSURE NO OIL IS COMING THROUGH WATER
OUTLET.OUTLET.
– CHECK THAT CENTRIFUGE IS RUNNING ATCHECK THAT CENTRIFUGE IS RUNNING AT
CORRECT RPM.CORRECT RPM.
– CHECK ALL PARAMETERS ARE CORRECT.CHECK ALL PARAMETERS ARE CORRECT.
– ENSURE OIL LEVEL IN TANKS.ENSURE OIL LEVEL IN TANKS.
31. STOPPINGSTOPPING PROCEDUREPROCEDURE
– SWITCH OFF/SHUT STEAM FOR LUB OILSWITCH OFF/SHUT STEAM FOR LUB OIL
HEATER.HEATER.
– CLOSE SUCTION AND DELIVERY VALVES.CLOSE SUCTION AND DELIVERY VALVES.
– SWITCH OFF POWER SUPPLY TOSWITCH OFF POWER SUPPLY TO
CENTRIFUGE.CENTRIFUGE.
– CHECK TANK (CLEAN & DIRTY) LEVELS.CHECK TANK (CLEAN & DIRTY) LEVELS.
32. FAULTFAULT FINDINGFINDING
Sl. No. FAULTS PROBABLE CAUSES REMEDIAL ACTIONS
01. Leakage from casing
drain.
a) Locking rings may be
loose.
b) O- seals may be worn out.
Reassemble bowl assembly
and tight locking rings.
Renew O-seals
02. Oil coming along
with water discharge.
a) Incorrect oil temperature.
b) Improper size gravity disc.
c) Bowl choked.
d) Water sealing not
maintained.
Maintain oil temperature.
Ensure correct size of
gravity disc.
Clean bowl assembly.
Ensure water sealing is
maintained.
03. Water going along
with cleaned oil.
a) Incorrect oil temperature.
b) Improper size gravity disc.
Maintain oil temperature.
Ensure correct size of
gravity disc.
33. FAULTFAULT FINDINGFINDING
Sl. No. FAULTS PROBABLE CAUSES REMEDIAL ACTIONS
04. Pump not
discharging
sufficient pressure.
a) Suction strainer may be
choked.
b) Relief valve setting faulty.
Clean suction strainer.
Reset relief valve.
05. Pump fail to start
when centrifuge is
running.
a) Pump disconnected due to
broken taper pin.
b) Pump jammed.
Renew taper pin.
Strip pumps, clean and
reassemble.
06. Discharge sight glass
overflowing.
a) Centrifuge outlet valve
closed.
b) Oil feeding too high.
Open outlet valve.
Regulate feed.
