Filters

FILTERSFILTERS

FILTERSFILTERS INTRODUCTIONINTRODUCTION PURPOSEPURPOSE LOCATIONLOCATION PARTSPARTS IMPORTANT FEATURESIMPORTANT FEATURES TYPESTYPES RECALL TABLERECALL TABLE SHARING OF EXPERIENCE ON FLIGHT SAFETYSHARING OF EXPERIENCE ON FLIGHT SAFETY

WHAT IS A FILTER?WHAT IS A FILTER?

- AN ACCESSORY - AN ACCESSORY

- FITTED IN A FLUID SYSTEM- FITTED IN A FLUID SYSTEM

- TO ENSURE CLEAN SUPPLY OF THE WORKING - TO ENSURE CLEAN SUPPLY OF THE WORKING FLUID FLUID

- THROUGH FILTERATION ACTION- THROUGH FILTERATION ACTION

PURPOSE OF FILTERSPURPOSE OF FILTERS

- TO PREVENT ENTRY/ FLOW OF INSOLUBLE - TO PREVENT ENTRY/ FLOW OF INSOLUBLE SUBSTANCES SUBSTANCES (e.g. (e.g. DIRT/ DUST/ WATER/ FOREIGN OBJECTS)DIRT/ DUST/ WATER/ FOREIGN OBJECTS)

- WITH THE WORKING FLUID - WITH THE WORKING FLUID

- INTO/ THROUGH THE FLUID SYSTEM- INTO/ THROUGH THE FLUID SYSTEM

WHAT IS THE EFFECT OF UN-FILTERED WHAT IS THE EFFECT OF UN-FILTERED SUPPLY OF WORKING FLUID?SUPPLY OF WORKING FLUID?

. . WEAR/ TEAR OFWEAR/ TEAR OF

. FINE-FINISHED INTERNAL PARTS . FINE-FINISHED INTERNAL PARTS

. WORKING SURFACES. WORKING SURFACES

. . SYSTEM STARVATION SYSTEM STARVATION (i.e. PARTIAL/ COMPLETE (i.e. PARTIAL/ COMPLETE STOPPAGE OF FLUID FLOW)STOPPAGE OF FLUID FLOW) DUE TO DUE TO

. RESTRICTED/ BLOCKED FLUID PASSAGES. RESTRICTED/ BLOCKED FLUID PASSAGES

WHAT IF THE FILTER IS DAMAGED/ ABSENT?WHAT IF THE FILTER IS DAMAGED/ ABSENT?

• INITIALLY,INITIALLY,

- ADVERSELY AFFECTED OPERATION OF THE SYSTEM - ADVERSELY AFFECTED OPERATION OF THE SYSTEM CAUSES A LOSS OF SYSTEM-PERFORMANCE .CAUSES A LOSS OF SYSTEM-PERFORMANCE .

• SUBSEQUENTLY,SUBSEQUENTLY,

- SYSTEM FAILURE IS CAUSED DUE TO FLUID-STARVATION/ - SYSTEM FAILURE IS CAUSED DUE TO FLUID-STARVATION/ MECHANICAL FAILURE.MECHANICAL FAILURE.

WHERE IS FILTER LOCATED?WHERE IS FILTER LOCATED?

- - AT THE OUTLET OF THE STORAGE TANKAT THE OUTLET OF THE STORAGE TANK

- GENERALLY BEFORE/ AFTER A PUMP AS PER - GENERALLY BEFORE/ AFTER A PUMP AS PER THE SYSTEM DESIGNTHE SYSTEM DESIGN

- AT THE ENTRY OF FINE CORED PASSAGES- AT THE ENTRY OF FINE CORED PASSAGES

PARTS OF A CONVENTIONAL FILTERPARTS OF A CONVENTIONAL FILTER

- INLET PORT- INLET PORT- FILTER BOWL/ BODY- FILTER BOWL/ BODY- FILTERING ELEMENT- FILTERING ELEMENT

. FILTERATION MEDIUM. FILTERATION MEDIUM

. REINFORCEMENT SUPPORT. REINFORCEMENT SUPPORT- O- RING(S) / SEALS- O- RING(S) / SEALS- CLOGGING INDICATOR CUM BYPASS - CLOGGING INDICATOR CUM BYPASS

VALVEVALVE- OUTLET PORT- OUTLET PORT- FILTER DRAIN PLUG/ BLEED VALVE- FILTER DRAIN PLUG/ BLEED VALVE

GENERAL FEATURESGENERAL FEATURES

FLOW RATE &FLOW RATE &PRESSURE RATINGPRESSURE RATING

DEPEND ON SURFACEDEPEND ON SURFACEAREA EXPOSED TO FLOWAREA EXPOSED TO FLOW

FILTERATION CAPACITY FILTERATION CAPACITY DEPENDS ON FILTERINGDEPENDS ON FILTERING

MEDIUM AND ITS THICKNESSMEDIUM AND ITS THICKNESS

DIRECTION OF FLOWDIRECTION OF FLOWDEPENDS ON DEPENDS ON

DESIGNDESIGN

FILTERFILTER

TYPES OF FILTERSTYPES OF FILTERSFILTERS ARE CLASSIFIED AS PERFILTERS ARE CLASSIFIED AS PER

- SYSTEM IN WHICH THEY ARE USED- SYSTEM IN WHICH THEY ARE USED- PRESSURE/ FLOW RATING- PRESSURE/ FLOW RATING- FILTERING CAPACITY- FILTERING CAPACITY- FILTERING MEDIUM- FILTERING MEDIUM- DIRECTION OF FLOW- DIRECTION OF FLOW- MAKE- MAKE

NOTENOTE: FILTERS ARE IDENTIFIED BY PART : FILTERS ARE IDENTIFIED BY PART NUMBER AND/ OR SERIAL NUMBER. NUMBER AND/ OR SERIAL NUMBER.

COMMON TYPES OF FILTERSCOMMON TYPES OF FILTERS- LOCKHEED MICRONIC FILTERS- LOCKHEED MICRONIC FILTERS

- VOKE’S FILTERS- VOKE’S FILTERS

- TECALEMIT FILTERS- TECALEMIT FILTERS

- PUROLATOR FILTERS- PUROLATOR FILTERS

- WIRE GAUGE FILTERS- WIRE GAUGE FILTERS

TYPES OF FILTERSTYPES OF FILTERSFILTERFILTER SYSTESYSTE

MMDIRECTION DIRECTION OF FLOWOF FLOW

FILTERING MEDIUMFILTERING MEDIUM WORKING WORKING PRESSUREPRESSURE

FLOW FLOW RATERATE

LOCKHEED LOCKHEED MICRONIC MICRONIC FILTERFILTER

FUELFUEL OUT TO INOUT TO IN 55-60 PAPER DISCS 55-60 PAPER DISCS MOUNTED ON BOLT MOUNTED ON BOLT OR SHAFTOR SHAFT -- --

VOKE’S VOKE’S FILTERFILTER

OILOIL IN TO OUTIN TO OUT FELT REINFORCED FELT REINFORCED WIRE GAUGEWIRE GAUGE

125 PSI125 PSI --FUELFUEL OUT TO INOUT TO IN

FELT REINFORCED FELT REINFORCED WIRE GAUGEWIRE GAUGE

100 PSI (TYPE-A)100 PSI (TYPE-A) 300 300 GAL/HRGAL/HR

250 PSI (TYPE-B)250 PSI (TYPE-B)

TECALEMITTECALEMITFILTERSFILTERS

OILOIL OUT TO INOUT TO IN FELT REINFORCED FELT REINFORCED WIRE GAUGEWIRE GAUGE -- --

PUROLATORPUROLATORFILTERSFILTERS

FUEL/ FUEL/ OTHER OTHER FLUIDSFLUIDS

OUT TO INOUT TO IN ROLLED WIRE ROLLED WIRE WOUND ON FRAMEWOUND ON FRAME -- --

WIRE GAUGE WIRE GAUGE FILTERSFILTERS

FUEL/ FUEL/ OIL/ OIL/ AIRAIR

OUT TO IN/OUT TO IN/IN TO OUTIN TO OUT

WIRE MESHWIRE MESH -- --