Use and Care Manual

4
3.0 Maintenance
A. When to Replace Filter Element
NOTE: Grades 7, 6, 5, 3, 1, -complete element isreplaced;
Grade9-unlessseparatorcoreisdamagedoutersleeveonly
isreplaced.
1. Grade6(drydesiccantafter-lter)
 Initialdrop:1psi(0.07kgf/cm
2
).Pressuredropincreasesas
elementloadswithsolidparticles.Replacewhenpressure
dropreaches6psi(0.42kgf/cm
2
)(indicatorinyellowarea)
or annually, whichever occurs rst.  Reference page 5,
Figure3.2forgaugescaledetail.
2. Grade11(mechanicalseparator)
 Elementshouldnotrequirereplacementunlessphysically
damaged. If sludge accumulates, element can be removed
andcleanedwithsoapandwater.
3. Grades9,7,5,3
a. Initial(dry)pressuredrop:1psi(0.07kgf/cm
2
)to2psi
(0.14kgf/cm
2
)
b. Operating pressure drop: As lter becomes liquid
loaded(wetted), pressuredropwillincreaseto2 to
4psi(0.14to0.28kgf/cm
2
).Furtherpressuredrop
occursaselementloadswithsolidparticles.
c. FOR MAXIMUM FILTRATION EFFICIENCY, REPLACE
ELEMENTWHENPRESSUREDROPREACHES6PSI(0.42
KGF/CM
2
)(INDICATORINYELLOWAREA)ORANNUALLY,
WHICHEVEROCCURSFIRST.Referencepage5,Figure
3.2forgaugescaledetail.
NOTE:Pressuredrop maytemporarilyincrease whenowis
resumedafterowstoppage.Pressuredropshouldreturnto
normal within one hour.
NOTE:Grades5and3-Duringnormaloperation bottomof
foamsleevewillhaveabandofoil.Spottingabovetheband
indicatesthatliquidsareaccumulatingfasterthantheycanbe
drainedandthatpreltrationisrequired.
4. Grade1(activatedcarbonlters)
a. Adsorption capacity - 1000 hours at rated capacity.
Elementlifeisexhaustedwhenodorcanbedetected
downstream of the filter.
B. Procedure for Element Replacement
THISFILTERISAPRESSURECONTAININGDEVICE.
DEPRESSURIZE BEFORE SERVICING.  If filter has not been
depressurizedbeforedisassembly,anaudiblealarmwillsound
when the bowl begins to be removed from the head. If this
occurs,stopdisassembly,isolateandcompletelydepressurize
lterbeforeproceeding.
1. Isolate lter (close inlet and outlet valves if installed) or
shutoffairsupply.
2. Depressurizelterbyslowlyopeningmanualdrainvalve.
3. Removebowl
a. For models12 through28 -bayonet mount- push
bowlup, turnbowl1/8thturnto yourleft, and pull
bowl straight down
b. Formodels32through48-threadedbowls-unscrew
bowlfromheadusinghand,strapwrenchorCspanner.
4. Cleanlterbowl
5. Replaceelement
a. Replacingcompleteelement
1)Pulloffoldelementanddiscard.
2)  Make certain o-ring inside top of replacement
element is in place and push element onto lter
head.ForHousingsizes40to48,placeelementin
bowl and secure with centering device.
NOTE:Grades5,3,and1-Donothandleelementsbyoutside
foamcover.Handlebybottomendcaponly.
b. Grade9-replacingsleeveonly
1) Pullelementstraightdowntoremove.
2) Removeboltandbottomcapandremovedispos-
able filter sleeve.
3) Cleanseparatorcorewithsoapandwaterifneces-
sary.
4) Slidenewltersleeveoverseparatorcoreandre-
placebottomcapandhandtightenbolt.
5) Makecertaino-ringinsidetopofelementisinplace
andpushelementontolterhead.
6. Aftermakingcertainthato-ringinsidetopofbowl(and
on bayonet mount heads, wave spring) are in place,
reassemble bowl to head.
NOTE:Makecertaino-ringisgenerouslylubricated.
NOTE:Wavespringendsshouldbepointeddowntoprevent
thewavespringfrominterferingwithreassembly.
NOTE:Threadedbowltoheadconnection,generouslylubricate
threads with a high grade/temperature lubricant good for
150°F,66°C.
Separator Core
Replacement Sleeve
Bottom Cap
Bolt
Bowl o-ring
Element O-ring
Element
Bowl o-ring
Element O-ring
Grade 9 - Sleeve Replacement
All Grades - Element Replacement
Wave Spring
Models 12-28
Figure 3.1
C. Auto Drain Mechanism
Itisrecommendedthatdrainmechanismbereplaced
annually.