Graco Clothes Dryer 234401 User Manual

Instructions - Parts List  
Desiccant Air  
Drying System  
309921N  
EN  
Model 234401, Series D  
Maximum Operating Pressure 160 psi (1.1 MPa, 11 bar)  
Maximum Temperature 150° F (65° C)  
Model 24M178, Series B  
Maximum Operating 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.  
ti22155a  
Model 234401 shown  
Includes:  
Air Flow Capacity  
(CFM)  
at 100 psi  
(0.7 MPa, 7 bar)  
Air  
Outlet  
npt(f)  
Air Inlet  
npt(f)  
Maximum Operating  
Part No. Series  
Description  
Pressure, psi (MPa, bar)  
1/2 in.  
1/2 in.  
100  
83  
175 (1.2, 12)  
234402  
B
Stage 1 - Air Filter with automatic  
drain. Removes water and con-  
taminants down to 3 microns.  
1/2 in.  
1/2 in.  
175 (1.2, 12)  
234397  
B
Stage 2 - Coalescer with auto-  
matic drain. Removes oil and  
sub-micronic particles down to  
1 micron.  
3/4 in.,  
reduced reduced  
to 1/2 in. to 3/8 in.  
3/4 in.,  
30  
175 (1.2, 12)  
160 (1.1, 11)  
234404  
B
Stage 3 - Desiccant Housing  
Removes uncondensed moisture.  
3/8 in.  
1/4 in.  
100  
288787  
288810  
288798  
A
A
A
Self Relieving Air Regulator  
Silica Gel Desiccant (5 lb. can)  
Shut-off Valve  
 
Installation  
Installation  
1. Before installing air line components, blow out the  
pipe line to remove debris. Be sure air to the regula-  
tor is clean. Erratic operation or loss of regulation is  
usually caused by dirt in the regulator.  
3. Install air shut-off valve 288798 upstream from the  
air system to isolate it for service.  
4. Install system so air flows through filters in the direc-  
tion noted on top of filter.  
2. Install the Air Drying System as close as possible to  
the equipment it serves. Use template 289185, pro-  
vided, to position system.  
5. A minimum 1/2 in. npt piping is recommended.  
Avoid using too many fittings, couplings, etc., which  
will restrict air flow.  
Shop Air Piping Layout  
Main Air Line  
3/4 in. (19 mm) minimum  
1-1/4 in. (32 mm) optimum  
1/2 in.  
(13 mm) drops  
Air Control unit  
or Air Filter  
Membrane air  
drying system  
Ball Valve  
8
6
Compressor  
Drain  
Leg  
Coalescer  
Air  
Filter  
OR  
Desiccant air  
drying system  
Main Air  
Shut-off Valve  
8
1
6
6
4
2
1
1
Flexible hose  
between compressor  
and stand pipe  
Drain Valve  
D
E
S
IC  
C
A
N
T
N
O
R
MA  
S
A
T
U
R
A
T
E
D
¨
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]  
309921N  
3
 
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 in. (19 mm)  
3/4 in. (19 mm)  
1 in. (25.4 mm))  
3/4 in. (19 mm)  
1 in. (25.4 mm)  
1-1/4 in. (31.8 mm)  
3/4 in. (19 mm)  
1-1/4 in. (31.8)  
1-1/2 in. (38.1)  
12 - 20 CFM  
Up to 200 ft (61 m)  
Over 200 ft (61 m)  
Up to 100 ft (30.5)  
Over100-200ft(30.5-61m)  
Over 200 ft (61 m)  
Up to 100 ft (30.5)  
Over100-200ft(30.5-61m)  
Over 200 ft (61 m)  
5 - 10 HP  
20 - 40 CFM  
40 - 60 CFM  
10 - 15 HP  
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)  
5/16 in. (7.9 mm)  
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)  
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)  
4
309921N  
 
Installation  
309921N  
5
 
Operation  
Operation  
WARNING  
Do not exceed the Maximum Incoming Air Pressure  
of the equipment. Over pressurizing can cause  
component rupture and serious injury.  
Model 234401, Series D  
Automatic Drain  
1. Attach air hose(s) to air regulator outlet valve  
289165.  
The automatic drain is equipped with a float actuated  
device which automatically ejects liquid contaminates  
under pressure.  
2. Attach air hose to main shut-off valve 288798.  
3. Open main shut-off valve 288798.  
Coalescer Pressure Drop Indicator  
4. Turn the T-hand adjusting screw in or out to adjust  
regulator to desired setting.  
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.  
5. Open outlet valve 289165 to supply air to spray  
guns or tool.  
6. With air flowing, readjust air pressure regulator if  
necessary.  
7. Turn off unit when not in use. Follow Pressure  
Model 24M178, Series B  
1. Attach air hose(s) to outlet elbow fitting 120375.  
2. Attach air hose to inlet elbow fitting C19024.  
3. Open main shut-off valve 288798.  
4. Turn off unit when not in use. Follow Pressure  
6
309921N  
 
Operation  
Model 24M178  
Model 234401  
C19024  
288798  
288798  
288789  
288789  
120375  
234402  
234402  
234397  
234397  
289165  
288787  
234404  
234404  
ti22156a  
ti22157a  
Part No.  
Description  
Part No.  
Description  
234402  
Air Filter with auto drain; see Manual  
309919 for parts information  
Coalescer with auto drain; see Manual  
309919 for parts information  
Desiccant Housing  
Air Regulator, self relieving  
Nipple with screen  
Shut-off Valve  
234402  
Air Filter with auto drain; see Manual  
309919 for parts information  
Coalescer with auto drain; see Manual  
309919 for parts information  
Desiccant Housing  
Nipple with screen  
Shut-off Valve  
Elbow Fitting  
Elbow Fitting  
234397  
234397  
234404  
288787  
288789  
288798  
289165  
234404  
288789  
288798  
C19024  
120375  
Regulator Outlet Valve  
309921N  
7
 
Maintenance and Repair  
Pressure Relief Procedure  
Coalescer 234397, Series B  
WARNING  
NOTE: It is recommended that Air Filter 234402 be  
installed upstream of the coalescing filter to  
remove 3 micron and larger size particles and sep-  
arate large droplets of moisture from the air line.  
To avoid injury, relieve air and fluid pressure before  
checking, cleaning, or repairing the equipment.  
CAUTION  
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.  
Never let the liquid level in the bowl reach the base of  
the coalescing element.  
1. Close the main air shut-off valve.  
See Manual 309919 for operation, cleaning, and parts  
information.  
2. Trigger the gun or dispense valve and open any  
drain valves to relieve pressure.  
Maintenance and Repair  
Relieve the pressure before cleaning, checking  
or repairing. Follow Pressure Relief Proce-  
dure, above.  
Check system at least once per shift to ensure  
proper drainage.  
A supply of low flow/low humidity air will pro-  
vide longer desiccant life.  
Air Filter 234402, Series B  
To maintain maximum filtering efficiency and avoid  
excessive pressure drop, the filter must be kept clean.  
See Manual 309919 for cleaning and parts information.  
8
309921N  
 
 
Maintenance and Repair  
5. Refill bowl with new or regenerated desiccant. See  
Desiccant Changeout. Desiccant Housing 234404  
holds 5 lb. of desiccant.  
Desiccant Housing 234404,  
Series B  
6. Reassemble bowl to cover, making sure that o-ring  
289186 is in place in cover.  
NOTE: Always install a moisture filter, to remove  
bulk fluids, and a coalescing filter, to remove oil,  
upstream of the desiccant housing. Desiccant  
coated with oil will not absorb moisture.  
289189  
288794  
Desiccant Changeout  
NOTE: Desiccant beads are non-toxic and  
non-flammable.  
The desiccant gradually changes color from blue to pink,  
indicating it has absorbed moisture to the saturation  
point and needs to be regenerated or replaced.  
289186  
288793  
To regenerate Silica Gel desiccant, heat desiccant  
for 4 hours at 275°F (135°C).  
To replace desiccant, order desired part no. from the  
following chart.  
Color  
Colorwhen  
288795  
Desiccant Part No.  
when fresh saturated  
288810 Silica Gel (5 lb)  
Blue  
Blue  
Pink  
Pink  
288823 Silica Gel (four 5 lb  
cans)  
289187 (2)  
289188  
Desiccant Housing Disassembly  
2. Unscrew the metal collar holding the desiccant bowl  
to cover. Remove bowl and collar.  
Part No. Description  
288793 Flow Tube Assy., includes flow tube, nut,  
o-ring, filter elements and retainers  
289186 O-Ring  
288794 Gasket  
289189 O-Ring  
3. Dump old desiccant out of bowl.  
4. If the pressure drop across the dryer has become  
unacceptable, the bronze element in the bottom of  
the bowl may be clogged. To remove clog:  
289187 Filter Element  
289188 O-Ring  
288795 Sight Glass  
288810 Desiccant, silica gel (5 lb)  
288823 Desiccant, silica gel (four 5 lb cans)  
a. Place a blow gun at the top of the tube and blow  
air through the flow tube.  
b. If element replacement is needed: disassemble  
flow tube from the bowl by removing the end  
cap and nut from the bottom of the bowl.  
c. Turn the flow tube (hand tight) counter clock-  
wise to remove it, then replace elements.  
d. Reassemble in reverse order.  
309921N  
9
 
Maintenance and Repair  
Self-Relieving Air Regulator  
288787  
Be sure air to the regulator is clean. Erratic operation or  
loss of regulation is usually caused by dirt in the regula-  
tor.  
289190  
Cleaning  
2. Remove bottom plug, spring, and valve.  
3. Remove six screws, and separate regulator body.  
4. Clean all parts with denatured alcohol. Wipe off seat  
and blow out body.  
Screws (6)  
288796  
5. Inspect parts for damage and replace as needed. To  
replace the valve and diaphragm, order Repair Kit  
288796.  
6. Reassemble parts and screw them into the regula-  
tor before tightening the bottom plug. Make sure the  
valve, diaphragm and spring are center aligned.  
Air Regulator Assembly  
for Desiccant Air Drying System  
Diaphragm  
Valve  
289191(spring)  
80  
100  
289340  
60  
6
120  
0
4
4
8
Bottom Plug  
1
2
2
4 0  
0
10  
160  
Part No.  
Description  
289340  
289149  
288796  
289190  
289191  
288797  
289165  
Air Pressure Gauge  
Plug  
Diaphragm/Valve Repair Kit  
T-handle Adjusting Screw  
Spring  
Nipple, 3/8 in. x 3/8 in.  
Shut-off Valve  
289149  
289165  
288797  
10  
309921N  
 
Maintenance and Repair  
309921N  
11  
 
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 reserves the right to make changes at any time without notice.  
Original instructions. This manual contains English. MM 309921  
Graco Headquarters: Minneapolis  
International Offices: Belgium, China, Japan, Korea  
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.  
Revision N, October 2013  
 

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