Page 1
Instructions - Parts List
In-line Air Filters
309919F
and Coalescers
To remove liquids and contaminants from compressed air supply. For professional use
only.
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.
EN
Part No. Series Description
234397 B Air Coalescer with auto drain
Removes liquids and contaminants down to 1 micron.
234402 B Stage 1 - Air Filter with auto drain
Removes water and contaminants down to 3 microns.
234403 B Stage 2 - Coalescer with auto drain
Removes oil and sub-micronic particles down to .01 microns.
234405 B Includes Air Filter 234402 and Coalescer 234397
234408 A Air Filter with auto drain
Removes liquids and contaminants down to 5 microns.
234409 A Coalescer with auto drain
Removes oil and sub-micronic particles down to .01 microns.
Air Flow
Air
Air Inlet
npt(f)
1/2” 1/2” 83 CFM
1/2” 1/2” 100 CFM
1/2” 1/2” 50 CFM
1/2” 1/2” 83 CFM
3/4” 3/4” 300 CFM
3/4” 3/4” 115 CFM
Outlet
npt(f)
Capacity
at 100 psi
(0.7 MPa,
7 bar)
Page 2
Installation
2
4
6
8
1
1
1
1
2
4
6
8
1
SATURA
TED
NORMA
DESICCANT
¨
2
4
6
8
1
1
1
1
2
4
6
8
1
Membrane air
drying system
Desiccant air
drying system
Ball Valve
Drain Valve
Drain
Leg
Air Control unit
or Air Filter
1/2” (13
mm) drops
Main Air Line
3/4” (19 mm) minimum
1-1/4” (32 mm) optimum
S
l
o
p
e
s
d
o
w
n
a
n
d
a
w
a
y
R
e
c
o
m
m
e
n
d
e
d
4
”
(
1
1
7
m
m
)
d
r
o
p
i
n
5
0
’
(
1
5
.
2
4
m
)
g
a
l
v
a
n
i
z
e
d
Coalescer
Air
Filter
Compressor
Flexible hose
between compressor
and stand pipe
1
5
-
2
0
f
t
.
(
4
.
6
-
6
.
1
m
)
• Main Air Line stand pipe should not be smaller than compressor outlet size.
• A minimum of 25 ft. (7.62 m) from compressor to first filter outlet is required to cool air [50 ft. (15.24 m) optimum]
OR
Main Air
Shut-off Valve
Installation
1. Before installing air line components, blow out the
pipe line to remove debris. Be sure air to the regulator is clean. Erratic operation or loss of regulation is
usually caused by dirt in the regulator.
2. Install the unit as close as possible to the equipment
it serves.
Shop Air Piping Layout
3. Install a main air shut-off valve upstream from the
air controls to isolate them for service.
4. Install system so air flows through filters in the direction noted on top of filter.
5. A minimum 1/2” npt piping is recommended. Avoid
using too many fittings, couplings, etc., which will
restrict air flow.
2 309919F
Page 3
Minimum Pipe Size Recommendations
Compressor Main Air Line
Size Capacity Length Size
1-1/2 - 2 HP 6 - 9 CFM any 3/4” (19 mm)
3 - 5 HP 12 - 20 CFM Up to 200 ft. (61 m) 3/4” (19 mm)
Over 200 ft. (61 m) 1” (25.4 mm))
5 - 10 HP 20 - 40 CFM Up to 100 ft. (30.5) 3/4” (19 mm)
Over100-200ft.(30.5-61m) 1” (25.4 mm)
Over 200 ft. (61 m) 1-1/4” (31.8 mm)
10 - 15 HP 40 - 60 CFM Up to 100 ft. (30.5) 3/4” (19 mm)
Over100-200ft.(30.5-61m) 1-1/4” (31.8)
Over 200 ft. (61 m) 1-1/2” (38.1)
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)
Installation
50 ft.
(15.24 m)
1/4 in. (6.4 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)
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)
6 (41, .4)
7.5 (52, .5)
9 (62, .6)
10.75 (74, .7)
12.25 (84, .8)
14 (97, 1)
2.25 (16, .2)
3 (21, .2)
3.75 (26, .3)
4.5(31, .3)
5.5 (38, .4)
6.5 (45, .4)
8 (55, .6)
10 (69, .7)
12.5 (86, .9)
14.5 (100, 1)
16.5(114,1.1)
18.75 (129, 1.3)
2.75 (19, .2)
3.5 (24, .2)
4.5 (31, .3)
5.25 (36, .4)
6.25 (43, .4)
7.5 (52, .5)
9.5 (66, .7)
12 (83, .8)
14.5 (100, .1)
17 (117, 1.2)
19.5 (134, 1.3)
22 (152, 1.5)
3.25 (22, .2)
4 (28, .3)
5 (34, .3)
6 (41, .4)
7 (48, .5)
8.5 (59, .6)
11 (76, .8)
14 (97, 1)
16.75(115,1.2)
19.5 (134, 1.3)
22.5 (155, 1.6)
25.25 (172, 1.7)
3.5 (24, .2)
4.5 (31, .3)
5.5 (38, .4)
6.75 (47, .5)
8 (55, .6)
9.5 (66, .7)
12.75 (88, 0.9)
16 (110, 1.1)
19 (131, 1.3)
22.5 (155, 1.6)
25.5 (176, 1.8)
29 (200, 2)
4 (28, .3)
5 (34, .3)
6 (41, .4)
7.25 (50, .5)
8.75 (60, .6)
10.5 (72, .7)
24 (165, 1.7)
28 (193, 1.9)
31 (214, 2.1)
34 (234, 2.3)
37 (255, 2.6)
39.5 (169, 2.7)
8.5 (59, .6)
10 (69, .7)
11.5 (79, .8)
13 (90, .9)
14.5 (100, 1)
16 (110, 1.1)
309919F 3
Page 4
Operation
Operation
WARNING
Do not exceed the Maximum Incoming Air Pressure
of the equipment. Over pressurizing can cause
component rupture and serious injury.
Pressure Relief Procedure
WARNING
To avoid injury, relieve air and fluid pressure before
checking, cleaning, or repairing the equipment.
Automatic Drain
The automatic drain is equipped with a float actuated
device which automatically ejects liquid contaminates
under pressure.
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.
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.
1. Close the main air shut-off valve.
2. Trigger the gun or dispense valve and open any
drain valves to relieve pressure.
4 309919F
Page 5
Maintenance
Maintenance
• Relieve the pressure before cleaning, checking
or repairing equipment. Follow Pressure
Relief Procedure, page 4.
• 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.
Air Filters with Automatic Drain
Cleaning
You do not need to remove the complete filter from the
line to clean it.
1. Follow the Pressure Relief Procedure, page 4.
2. Clean all parts with cleaning solvent and blow out filter body.
3. Wash filter element in cleaning solvent. Blow the filter out from the inside.
Coalescers with Automatic
Drain
NOTE: It is recommended that Air Filter 234402 be
installed upstream of the coalescing filter to
remove 3 micron and larger size particles and separate large droplets of moisture from the air line.
CAUTION
Never let the liquid level in the bowl reach the base of
the coalescing element.
Cleaning
You do not need to remove the complete coalescer from
the line to clean it.
1. Follow the Pressure Relief Procedure, page 4. Be
sure to shut off the air supply and depressurize the
filter.
2. Clean all parts with cleaning solvent and blow out
coalescer body.
3. Replace coalescer element.
309919F 5
Page 6
Parts
2
3
5
2
4
3
5
ti22164a
Parts
Air Filter and Coalescer Assembly 234405, Series B
Includes Air Filter 234402 (below) and Coalescer 234397 (page 7).
Air Filters
Air Filter 234408 Air Filter 234402†
Ref.
No. Part No. Description
2 288791 O-Ring
3 288807 Filter Element
5 289192 Automatic Drain Kit
6 309919F
Ref.
No. Part No. Description
2 127289 O-Ring
3 16W405 Filter Element
4 16W811 Baffle End Cap
5 24U115 Automatic Drain Kit
† Used with both Desiccant 234401 (see Manual 309921) and
Membrane 234481 (see Manual 309920) Air Drying Systems.
Page 7
Air Coalescers
16
12
13
15
13
12
14
11
12
16
13
14
15
17
ti22165a
Parts
Coalescer 234409
Ref.
No. Part No. Description
12 288791 O-Ring
13 U23085 Coalescer Element
15 289192 Auto Drain
16 288792 Pop-up Indicator Repair Kit
Coalescer 234397**
Ref.
No. Part No. Description
12 127289 O-Ring
13 16W406 1 Micron Coalescer Element
14 16W811 Baffle End Cap
15 24U115 Automatic Drain Kit
16 24U116 Pop-up Indicator Repair Kit
17 24U117 Bracket Kit
** Used with Membrane Air Drying System 234418. Refer to Man-
ual 309920.
Coalescer 234403*
Ref.
No. Part No. Description
12 127289 O-Ring
13 16W407 0.01 Micron Coalescer Element
14 16W811 Baffle End Cap
15 24U115 Automatic Drain Kit
16 24U116 Pop-up Indicator Repair Kit
17 24U117 Bracket Kit
* Used with Desiccant Air Drying System 234401. Refer to Manual
309921.
309919F 7
Page 8
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
For the latest information about Graco products, visit www.graco.com.
For patent information, see www.graco.com/patents.
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 INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA
Copyright 2003, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.
Graco reserves the right to make changes at any time without notice.
Original instructions. This manual contains English. MM 309919
International Offices: Belgium, China, Japan, Korea
Graco Headquarters: Minneapolis
www.graco.com
Revision F, September 2013
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