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Parker Hannifin Corporation
Finite Filter Operation
Oxford, MI
Problem
Probable Cause
Solution
Too High Initial
Air flow Excessive for housing size.
Install larger filter.
Pressure Drop
Filter media grade too fine.
Install coarser element.
Too much oil/water from compressor.
Precoalesce with grade 10 - oversize
housing.
Premature Clogging
Lubricant improperly selected for compressor,
Change oil, consult with lubricant
(Air Flow Drops Off)
causing varnish or carbonizing of lubricant.
supplier.
Excessive inlet particulate contamination.
Prefilter with Interceptor.
Excessive lubricants present on element caused
Prefilter with Grade 10 and oversize
by either high lubricant viscosity or very high
coalescer to compensate.
inlet aerosol level.
Oil/water emulsion forming on element.
Remove water by drip leg, aftercooler.
Install mechanical separator upstream.
Ice forming or oil viscosity too high due to
Raise temperature.
Excessively low unit temperature.
Oil Present Down-
Bowl not properly drained of waste liquids.
Drain regularly, use auto drain.
stream of Filter
Element not sealing.
Replace element.
Filter piped backwards.
See "INSTALLATION"; Re-pipe.
Filter being by-passed by valving.
Close valve.
Contaminated air entering system from second
Change pipe or relocate filter.
source downstream.
Oil vapors condensing downstream.
Install an adsorber.
Excessive inlet oil level.
Precoalesce with Grade 10 and
possibly oversize.
Element damaged, chemically attacked or not
Change and consult distributor
installed in housing.
or factory for other than neutral pH.
Oil present in precontaminated
Clean piping.
downstream piping.
Excessive flow surges.
Relocate filter, precoalesce with
grade 10 and oversize coalescers.
Head - NPT
41508 41509 41510 41508 41509 41510 41511
41512
Head (DPI) - NPT* 41513 41514 41515 41513 41514 41515 41516
41517
Head (P Ports) NPT
41518
41519
Head - BSPF
41429 41430 41431 41429 41430 41431 41432
41433
Head (DPI) - BSPF* 41439 41440 41441 41439 41440 41441 41442
41443
Head (P Ports) BSPF
41450
41451
Head - BSPT
41540
41541
Head (DPI) - BSPT*
41544
41545
Head (P Ports) BSPT
41548
41549
Elements:
C
C10-025
C10-050
C15-060
C15-095
CU
CU10-025
CU10-050
CU15-060
CU15-095
IU
IU10-025
IU10-050
IU15-060
IU15-095
DS
DS10-025
DS10-050
DS15-060
DS15-095
QU
QU10-025
QU10-050
QU15-060
QU15-095
3PU
3PU10-025
3PU10-050
3PU15-060 3PU15-095
100WSU
100WSU10-025
100WSU10-025
100WSU15-060
AU
AU10-025
AU10-050
AU15-060 AU15-095
Rod
40076
40077
45068
45069
End Cap
45076
45077
End Cap (high temp)
41359
41038
O-Ring
76143
76235
O-Ring (high temp)
76143V
76235V
Brass Drain Bushing
23054
O-Ring (drain)
76114V
Bowl Only
41520
41521
41522
41523
Bowl Assy.
41529
41530
41531
41532
w/Manual Drain
Brass Nut
23041
Drain Valve
70010
Manual Drain Kit
(includes Drain Valve, Brass Nut, Brass Drain Bushing and O-Ring)
EBD-12
=insert grade 2, 4, 6, 8 or 10
* DPI-13 or DPG-15 Differential pressure indicator required.
Maintenance Bulletin - International H-Series
(1 1/4" to 3" NPT, BSPF, BSPT Sizes only)
When Coalescer or Interceptor differential pressure reaches clogged condition
(6-10 PSID) replace element immediately. DO NOT ATTEMPT TO CLEAN
FILTER TUBE. System contamination can result. DO NOT BY-PASS THE CO
-
ALESCER unless the by-pass line is also filtered.
INSTALLATION
OPERATION
Air coalescing is a continuous, balanced, steady-state process
occurring at or below rated flow, which depends on two factors for
high performance: (1) The bowl must be kept free of waste liquid
buildup and (2) The element must be replaced when the differential
pressure reaches 6-10 psid, 12 psid Maximum. Differential pressure
can be sensed at the inlet and outlet ports by two gauges, or by Finite's
DPI-13 differential pressure indicator, DPG-15 differential pressure
gage, or by observing system characteristics.
Bowl draining is accomplished by opening the manual drain valve
(standard on all housings), at least once every 8 hours depending
on the liquid load. The Finite Auto-Drain AD-12 is a useful tool that
replaces manual draining. Finite has an assortment of electrically timed
drain valves that can be used to drain the bowl automatically.
A Finite coalescer, under normal system conditions, will operate for
6 to 12 months before reaching its Maximum differential pressure. A
"PU" series Interceptor, or a "QU" series coalescing element with a
pleated prefilter can be employed ahead of the coalescer to increase
its life. The interceptor should be replaced when its differential pres
-
sure reaches 8 - 10
PSID.
Finite coalescers are designed for nominal operation with 10-20 wt.
oil. Any viscosity increase over that of 20 wt. oil must be offset by
a proportionate oversizing of the filter element. Consult your Finite
representative.
Finite H-Series filters should be installed in a level pipeline, mounted
vertically, the bowl downward with one bowl length clearance for element
removal. The filter should be installed at the highest pressure point
available, and as near as possible to the equipment to be protected and
have a drip leg immediately upstream. The coalescers and particulate
filters should be visible and easily accessible for periodic draining and
maintenance. Filters should be piped according to these instructions also
following the flow direction label on the filters.
Filters up to and including 2" connection sizes flow as follows:
Coalescers/WS
: from port 1 to port 2
Interceptors
:
from port 2 to port 1
Adsorbers
:
from port 2 to port 1.
Filters with connection sizes 2 1/2" and 3" flow as follows:
Coalescers/WS
:
from port 1 to port 2
Interceptors
:
from port 1 to port 2
Adsorbers
:
from port 1 to port 2.
The following are recommended filter locations relative to other com
-
pressed air equipment (unless specific instructions are given to the
contrary):
(1) COALESCERS and WATER SEPARATORS (WS) (liquid removal)
are placed before the dryer.
(2) The INTERCEPTOR (particulate removal) should be installed
ahead of the COALESCER when prefiltration is required.
(3) The INTERCEPTOR (particulate removal) can also be installed
downstream of desiccant dryers to prevent desiccant migration.
(4) The ADSORBER (vapor removal) is always preceded by a
COALESCER.
DANGER
Filter housings must be depressurized before
performing any maintenance activities.
!
MB-143
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