Instructions - Parts List
In-line Air Filters
and Coalescers
309919D
Maximum Working Pressure 175 psi (1.2 MPa, 12 bar)
Maximum Temperature 150° F (65° C)
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Air Flow
Capacity
at 100 psi
(0.7 MPa,
7 bar)
Air
Outlet
npt(f)
Air Inlet
Part No.
Description
npt(f)
1/2”
1/2”
1/2”
1/2”
1/2”
1/2”
70 CFM
115 CFM
35 CFM
234397 Air Filter with auto drain
Removes liquids and contaminants down to .01microns.
234402 Stage 1 - Air Filter with auto drain
Removes water and contaminants down to 5 microns.
234403 Stage 2 - Coalescer with auto drain
Removes oil and sub-micronic particles down to .01 microns.
1/2”
1/2”
1/2”
1/2”
70 CFM
234405 Includes Air Filter 234406 and Coalescer 234407, see below
108 CFM
234406 Stage 1 - Air Filter with auto drain
Removes water and contaminants down to 5 microns.
1/2”
3/4”
3/4”
1/2”
3/4”
3/4”
70 CFM
300 CFM
115 CFM
234407 Stage 2 - Coalescer with auto drain
Removes oil and sub-micronic particles down to .01 microns.
234408 Air Filter with auto drain
Removes liquids and contaminants down to 5 microns.
234409 Coalescer with auto drain
Removes oil and sub-micronic particles down to .01 microns.
Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Copyright 2003, Graco Inc. is registered to I.S. EN ISO 9001
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Installation
Minimum Pipe Size Recommendations
Compressor
Main Air Line
Size
Capacity
Length
Size
1-1/2 - 2 HP
3 - 5 HP
6 - 9 CFM
any
3/4” (19 mm)
3/4” (19 mm)
1” (25.4 mm))
3/4” (19 mm)
1” (25.4 mm)
1-1/4” (31.8 mm)
3/4” (19 mm)
1-1/4” (31.8)
1-1/2” (38.1)
12 - 20 CFM
Up to 200 ft. (61 m)
Over 200 ft. (61 m)
5 - 10 HP
20 - 40 CFM
40 - 60 CFM
Up to 100 ft. (30.5)
Over100-200ft.(30.5-61m)
Over 200 ft. (61 m)
10 - 15 HP
Up to 100 ft. (30.5)
Over100-200ft.(30.5-61m)
Over 200 ft. (61 m)
Air Pressure Drop Through Hose, by hose length and ID
psi (Kpa, bar)
Air Hose Inside
Diameter
4 ft.
(1.22 m)
10 ft.
(3.05 m)
15 ft.
(4.6 m)
20 ft.
(6.1 m)
25 ft.
(7.62 m)
50 ft.
(15.24 m)
1/4 in. (6.4 mm)
11 (76, .8)
14 (97, 1)
40 psi (276 kPa, 2.8 bar)
50 psi (345 kPa, 3.4 bar)
60 psi (414 kPa, 4.1 bar)
70 psi (483 kPa, 4.8 bar)
80 psi (552 kPa, 5.5 bar)
90 psi (621 kPa, 6.2 bar)
6 (41, .4)
7.5 (52, .5)
9 (62, .6)
8 (55, .6)
10 (69, .7)
12.5 (86, .9)
14.5 (100, 1)
9.5 (66, .7)
12 (83, .8)
14.5 (100, .1)
17 (117, 1.2)
12.75 (88, 0.9) 24 (165, 1.7)
16 (110, 1.1)
19 (131, 1.3)
28 (193, 1.9)
31 (214, 2.1)
16.75(115,1.2)
19.5 (134, 1.3)
22.5 (155, 1.6)
25.25 (172, 1.7)
10.75 (74, .7)
12.25 (84, .8) 16.5(114,1.1) 19.5 (134, 1.3)
14 (97, 1)
22.5 (155, 1.6) 34 (234, 2.3)
25.5 (176, 1.8) 37 (255, 2.6)
18.75 (129, 1.3) 22 (152, 1.5)
29 (200, 2)
39.5 (169, 2.7)
5/16 in. (7.9 mm)
40 psi (276 kPa, 2.8 bar)
50 psi (345 kPa, 3.4 bar)
60 psi (414 kPa, 4.1 bar)
70 psi (483 kPa, 4.8 bar)
80 psi (552 kPa, 5.5 bar)
90 psi (621 kPa, 6.2 bar)
2.25 (16, .2)
3 (21, .2)
3.75 (26, .3)
4.5(31, .3)
5.5 (38, .4)
6.5 (45, .4)
2.75 (19, .2)
3.5 (24, .2)
4.5 (31, .3)
5.25 (36, .4)
6.25 (43, .4)
7.5 (52, .5)
3.25 (22, .2)
4 (28, .3)
5 (34, .3)
6 (41, .4)
7 (48, .5)
8.5 (59, .6)
3.5 (24, .2)
4.5 (31, .3)
5.5 (38, .4)
6.75 (47, .5)
8 (55, .6)
4 (28, .3)
5 (34, .3)
6 (41, .4)
7.25 (50, .5)
8.75 (60, .6)
10.5 (72, .7)
8.5 (59, .6)
10 (69, .7)
11.5 (79, .8)
13 (90, .9)
14.5 (100, 1)
16 (110, 1.1)
9.5 (66, .7)
3
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Operation
Operation
Pressure Relief Procedure
WARNING
Do not exceed the Maximum Incoming Air Pressure
of the equipment. Over pressurizing can cause com-
ponent rupture and serious injury.
WARNING
To avoid injury, relieve air and fluid pressure before
checking, cleaning, or repairing the equipment.
Auto Drain
The following is a basic pressure relief procedure. Be
sure to follow the specific pressure relief procedure in
your spray gun and/or fluid supply equipment manuals.
When the bowl is pressurized, the piston travels down
against the spring and closes the drain opening. When
the bowl is depressurized (i.e., overnight when system is
shut down), the spring lifts the piston from the seal,
allowing the bowl to drain.
1. Close the main air shut-off valve.
2. Trigger the gun or dispense valve and open any
drain valves to relieve pressure.
You can push the piston stem on the bottom of the
bowl to manually drain it.
Coalescer Pressure Drop
Indicator
The differential pressure drop indicator provides early
detection of a clogged coalescing filter element. As the
filter element becomes clogged, the red indicator starts
to rise while air is flowing through the unit. When the
pressure drop across the element reaches 10-12 psi
(69-83 kPa, 0.7-0.8 bar), the red indicator will be in full
view, and the element should be replaced. Failure to
replace the element when the pressure drop exceeds 10
psi (69 kPa, 0.7 bar) will affect your air quality and tool
efficiency.
4
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Maintenance
Maintenance
Coalescers with Auto Drain
•
Relieve the pressure before cleaning, checking
or repairing equipment. Follow Pressure
It is recommended that Air Filter 234402 be
installed upstream of the coalescing filter to
remove 5 micron and larger size particles and sep-
arate large droplets of moisture from the air line.
•
•
Check system at least once per shift to ensure
proper drainage.
To maintain maximum filtering efficiency and
avoid excessive pressure drop, filters must be
kept clean.
CAUTION
Never let the liquid level in the bowl reach the base of
the coalescing element.
Air Filters with Auto Drain
Cleaning
You do not need to remove the complete coalescer from
the line to clean it.
Cleaning
You do not need to remove the complete filter from the
line to clean it.
sure to shut off the air supply and depressurize the
filter.
2. Clean all parts with cleaning solvent and blow out
coalescer body.
2. Clean all parts with cleaning solvent and blow out fil-
ter body.
3. Replace coalescer element.
3. Wash filter element in cleaning solvent. Blow the fil-
ter out from the inside.
5
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Parts
Parts
Air Filter and Coalescer Assembly 234405
Air Filters
Air Filter 234402†
Ref.
No. Part No. Description
1
2
3
4
5
288788
288791
288790
288809
288808
Auto Drain
O-Ring
Baffle Kit
Filter Element
Bracket (not shown)
2
†
Used with both Desiccant 234401 (see Manual 309921) and
Membrane 234481 (see Manual 309920) Air Drying Systems.
4
3
Air Filter 234406
Ref.
No. Part No. Description
1
2
3
4
289192
288791
288790
288809
Auto Drain
O-Ring
Baffle Kit
Filter Element
Air Filter 234408
Ref.
No. Part No. Description
1
2
4
289192
288791
288807
Auto Drain
O-Ring
Filter Element
1
Push to manually drain
(open)
6
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Parts
Air Filter/Coalescers
Air Filter 234397**
Ref.
13
12
No. Part No. Description
11 288788
12 288791
13 288792
14 289193
Auto Drain
O-Ring
Pop-up Indicator Repair Kit
Coalescer Element
** Used with Membrane Air Drying System 234418. Refer to Man-
ual 309920.
Coalescer 234403*
Ref.
No. Part No. Description
11 288788
12 288791
13 288792
14 289194
Auto Drain
O-Ring
Pop-up Indicator Repair Kit
Coalescer Element
14
*
Used with Desiccant Air Drying System 234401. Refer to Manual
309921.
Coalescer 234407
Ref.
No. Part No. Description
11 289192
12 288791
13 288792
14 289193
Auto Drain
O-Ring
Pop-up Indicator Repair Kit
Coalescer Element
11
Coalescer 234409
Ref.
No. Part No. Description
Push to manually drain
(open)
11 289192
12 288791
13 288792
14 118559
Auto Drain
O-Ring
Pop-up Indicator Repair Kit
Coalescer Element
7
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Graco Standard Warranty
Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in material
and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty published by
Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be
defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written
recommendations.
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty
installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of
non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with
structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or maintenance
of structures, accessories, equipment or materials not supplied by Graco.
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of
the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned
to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs will
be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy
(including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or
consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT
MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to
the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these
warranties.
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or
the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the
negligence of Graco, or otherwise.
FOR GRACO CANADA CUSTOMERS
The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into,
given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la
rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite
de ou en rapport, directement ou indirectement, avec les procédures concernées.
Graco Phone Numbers
TO PLACE AN ORDER, contact your Graco distributor or call to identify the nearest distributor.
Phone: 612-623-6921 or Toll Free: 1-800-328-0211, Fax: 612-378-3505
All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
This manual contains English. MM 309919
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441
6/2003, Rev. 5/2007
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