Page 1
SERVICE BULLETIN
SB-6-159-H
Replaces SB-6-159-G
DAD-503 (130089) AIR STATION WITH DESICCANT
IMPORTANT: Read and follow all INSTRUC-
TIONS and SAFETY PRECAUTIONS before
installing, operating or maintaining this
equipment. Keep this manual for future
reference.
DESCRIPTION
The DAD-503 is designed to be a point
of use system. It is capable of removing
dirt, water, oil and water vapor hydrocarbons and odors from compresssed air. It
consists of a filter separator, coalescing
filter, charcoal filter, flow thru regulator,
desiccant dryer, air regulator, and main
air supply shut off valve.
A clean filtered supply of air must be
provided for use with a supplied air
respirator. In addition, air for spray
operations passes through the desiccant
filled tank that removes any remaining water vapor to a -40° F Dew Point,
providing the ultimate air supply for spray
finish applications.
SPECIFICATIONS
Air Filter (Separator):
Air Inlet 1/2" NPT(F)
Air Outlet 1/2" NPT(F)
Air Flow Capacity 100 CFM
Maximum Operating Press. 150 PSIG (10.3 Bar)
Maximum Temperature 150° F (65.6°C)
Automatic Mechanical Drain Supplied
Filter 5 micron
Coalescing Filter:
Air Inlet 1/2" NPT(F)
Air Outlet 1/2" NPT(F)
Air Flow Capacity 55 CFM
Maximum Operating Press. 150 PSIG (10.3 Bar)
Maximum Temperature 150° F (65.6°C)
Automatic Mechanical Drain Standard
Pressure Differential Ind. Standard
Filter 0.01 Micron
Charcoal Filter:
Air Inlet 1/2" NPT(F)
Air Outlet 1/2" NPT(F)
Air Flow Capacity 75 CFM
Maximum Operating Pressure 150 PSIG (10.3 Bar)
Maximum Temperature 150° F (65.6°C)
Manual Mechanical Drain Standard
Pressure Differential Indicator Standard
Aerosol Filter .003 ppm./wt.
Particulate Filter 3.0 micron
Flow Thru Regulator:
Flow Thru Ports 1/2" NPT(F)
Regulated Ports 1/4" NPT(F)
Air Flow Capacity(regulated) 28 CFM @ 60 PSI
with 100 PSI Inlet
Maximum Inlet Pressure 300 PSIG
Regulated Pressure 0-125 PSIG
Maximum Temperature 175° F (79.4°C)
Desiccant Dryer:
Air Inlet 1/2" NPT(F)
Air Outlet 1/2" NPT(F)
Air Flow Capacity 25 CFM
Maximum Operating Pressure 150 PSIG (10.3 Bar)
Maximum Temperature 150° F (65.6°C)
Humidity Indicator Standard
Water Vapor Removal -40° F Dew Point
Tool Air Regulator:
Air Inlet 3/8" NPT(F)
Air Outlet 1/4" NPT(F) (3 ea.)
Air Flow 60 CFM
Maximum Operating Pressure 150 PSIG (10.3 Bar)
Maximum Temperature 120° F (48.9°C)
VA-595 Main Air Supply Shut Off Valve:
Air Inlet and Air Outlet 1/2" NPT(M)
Maximum Operating Pressure 175 PSIG (12.0 Bar)
BREATHING AIR REQUIREMENTS
Supplied breathing air, as defined by
OSHA 29 CFR 1910.134i and NIOSH 42 CFR
84.141, MUST meet or exceed the following
requirements for Type 1-Grade D breathable air, as defined in Compressed Gas
Association (CGA-G7-1-1997):
Oxygen = 19.5-23.5% (Typical
atmospheric levels)
Oil (condensed) = 5 mg/m (milligrams per cubic meter) maximum
Carbon Monoxide (CO) = 10 ppm
(parts per million) max.
Carbon Dioxide (CO2) = 1OOO ppm
(parts per million) max. (Typical
atmospheric levels)
Odor = The presence of a pronounced odor should render the
air as unsatisfactory
It is up to the employer to assure that the
air compressor is properly maintained,
that the air compressor intake is located
in a clean contaminate free location
and that the air compressor is drawing
in typical atmospheric air, meeting all of
the national and local requirements for
breathing air.
This filter unit does not remove or filter
Carbon Monoxide (CO). It is up to the
employer to ensure that the level of CO
does not exceed the maximum national
or local allowed level. The recommended
method to assure that the CO level is not
exceeded is to install a carbon monoxide
monitor and alarm.
This filter unit will only remove particulate
matter, water, oil and odor. This filter unit
will meet the particulate matter, oil and
odor requirements of Type 1-Grade D
Breathable Air and Compressed Breathing
Air, CSA-Z180.1 when:
• The lter unit is connected to a
compressed air source:
The compressor is properly
maintained
The air compressor intake is
located in a clean contaminate
free location
The air compressor is draw-
ing in typical atmospheric air,
meeting all of the national
and local requirements for
breathing air
• The lters are properly maintained
• A properly operating CO monitor
is installed
Risk of explosion or fire.
Improper use can cause
personal injury.
• This product is designed and
intended for use in industrial compressed air systems only. Do not use
for liquids or gasses other than air.
• Do not use where pressure or temperature can exceed rated operating
conditions (see specifications).
• Regulated outlet pressure must
never be set higher than the
maximum operating pressure of the
downstream air tool or equipment.
An outlet pressure gauge should
always be used.
Risk of illness or death. Carbon
monoxide can cause nausea,
fainting or death. Stop using if carbon monoxide is present. This unit
does not remove carbon monoxide.
A carbon monoxide monitor should
be incorporated into your air supply line to warn of the presence of
carbon monoxide.
Page 2
Page 2 SB-6-159-H
SAFETY PRECAUTIONS
This manual contains important information that all users must know and understand before using the equipment. This
information relates to USER SAFETY and PREVENTING EQUIPMENT PROBLEMS.
To help you recognize this information, we use the following terms to draw your attention to certain equipment labels and
portions of this manual. Please pay special attention to any label or information that is highlighted by one of these terms:
Note
Important information to alert you to a
situation that might cause serious injury
if instructions are not followed.
Risk of injury. Do not place unit in
service without metal bowl guard
installed. Filter units are sold only
with metal bowl guards. To minimize
the danger of flying fragments in the
event of plastic bowl failure, guard
must not be removed. If the unit is
in service without the metal bowl
guard installed, manufacturer’s warranties are void and the manufacturer
assumes no responsibility for any
resulting loss. If unit has been in
service and does not have a metal
bowl guard, order one and install
before placing back in service.
Certain compressor oils, cleaning agents and solvents may
attack the plastic and rubber
components used in the construction of this product. This
product should not be used in
conjunciton with or in the vicinity of these materials. Read and
follow material labels carefully.
Please consult DeVilbiss if in
doubt.
Important information that tells how to
prevent damage to equipment, or how
to avoid a situation that might cause
minor injury.
INSTALLATION - AIR STATION
Risk of explosion and injury.
Release all air pressure from
system before servicing system.
Be sure to read and understand
all Service Bulletins on the
separate components before
using the system. Use only
specified DeVilbiss parts.
Risk of equipment damage!
Do not install your air station
where it is subjected to sudden
depressurization cycles exceeding 20 PSIG. Quick relieving air
solenoid valves, typical in some
spray booths, will eventually
fail pressure gauges and filters.
To minimize sudden depressurization effect, replace the existing solenoid with a
"slow closing solenoid valve". (One source:
Automatic Switch Co). Or, install an air
adjusting valve at the existing solenoid
valve outlet.
For ease of installation and maintenance,
attach the assembled air station to the main
air line using a pipe union, (not included).
Information that you should pay special
attention to.
1. Be sure to read all "Warnings" and
"Cautions" in this manual and compo nent manuals on the unit before instal lation or using this equipment.
2. Install air station system as close as
possible to the point where the air is
being used. Use enclosed mounting
bracket to support Air Station.
3. Install main air supply shut off valve
upstream of air drying system to
allow maintenance to the unit.
4. Install unit with air flow through filter
in direction of arrow on top of filters.
5. Minimum 3/4" NPT piping is recom mended. Avoid using fittings, cou plings, etc. that restrict air flow.
6. Maximum inlet pressure and operat-
ing temperature is: 150 PSIG and
120° F (48.9 C)
7. Three 6' lengths of vinyl tubing are
shipped loose with the system. Slide
over drains which protrude from bot tom of the filters. Place the other end of
vinyl tubing into appropriate re ceptacle. Prevent vinyl tubing from
becoming kinked which would prevent
free movement of liquids discharged
from the automatic or manual drain.
8. An optional manual drain HAF-11) can
be installed in place of the auto matic drains.
Page 3
PARTS LIST
Replace Ref.
No. Part No. Description Req.
1 13-0041 Air Filter/Separator 1
2 HAF-505 Coalescing Filter 1
3 HAF-517 Charcoal Filter 1
4 HAR-508 Flow-Thru Regulator 1
5 MPV-424 Breathable Air Quick 1
Release Socket
6 DAD-8 Screen (Not Shown) 2
7 GA-316 Gauge 1
8 PT-417 Desiccant Tank 1
( without desiccant,
Includes Ref. No. 6)
9 DAD-400 Humidity Indicator 1
(1 Humidity Indicator
Paper Included)
10 GA-288 Gauge 1
11 HAR-507 Air Regulator 1
12 VA-542 Ball Valve 1
13 DAD-1
(Not Shown)
(1 Humidity Indicator
Paper Included)
14 DAD-600 Desiccant Tune-Up Kit 1
(Not Shown) Includes
1 ea: DAD-1, DAD-3,
and HAF-6.
15 VA-595 Main Air Supply Shut 1
Off Valve (Not Shown)
OPERATION
After the system is installed and ready
to use;
1. Attach breathable air hose to Q.D.
on flow-thru regulator.
2. Attach air hose(s) to outlet valve.
3. Open main shut-off valve upstream
of system.
4. Attach breathable air hose to sup plied air respirator.
5. Adjust regulator (4) to read 60 PSIG
(flowing air to the visor). The pressure
should never be allowed to drop be low 50 PSI in a flowing condition.
6. Adjust regulator (11) to desired set ting by turning "T" handle in or out.
7. Open ball valve (12) to supply air to
spray gun or tool being used. With air
flowing, readjust air pressure at
regulator if necessary
8. After use, shut off ball valve and
bleed off residual air in hose.
I
ment
Parts
Replacement Desiccant
nd.
1
Figure 2 DAD-503 Air Station
4
1 2 3
MAINTENANCE
Risk of injury. Components
under pressure. Relieve air
pressure before performing any
maintenance.
1. Check system at least once per shift
to insure proper drainage. Look for
water in the drain tubing.
2. Before performing maintenance on
system, close main shut-off valve
located upstream. Bleed off residual
air in system.
MAINTENANCE - WATER SEPARATOR
FILTER 13-0041
1. Before performing maintenance on
unit, close any main shut-off valve
located upstream of filter. Bleed off
residual air in unit.
2. To open filter, press button located on
clamp ring and rotate ring either clock
wise or counterclockwise while pull ing down on ring. The metal bowl guard
and plastic bowl can then be removed
from the filter body.
3. Remove the filter element by loosen ing counterclockwise. Clean or replace
the filter element. Frequency of ele ment replacement will depend upon
air quality, air usage and condition of
the air piping. It is recommended to
change the element every six months.
4. Inspect o-ring for damage. Replace if
necessary.
SB-6-159-H Page 3
7
6
5
8
9
Figure 3 -13-0041
Body
(Not
Available)
HAF-6
Filter Kit
(Includes Bowl
O-Ring
HAF-18
Automatic Drain
(Available sepa-
rately)
HAF-8
Transparent
Plastic Bowl
HAF-19
Metal
Bowl
Guard
HAF-409
Clamp Ring
10
11
6
12
Gasket
(Included
with
HAF-26)
Baffle
(Included
with
HAF-26)
HAF-17
Bowl
O-Ring
HAF-26
Element
Retainer
HAF-11
Flexible Drain
(supplied with
13-0041)
5. Inspect plastic bowl for signs of dam age such as cracks, crazing or deterio ration. Replace if necessary.
Page 4
Page 4 SB-6-159-H
MAINTENANCE - COALESCING FILTER
HAF-505
MAINTENANCE - HAF-517
CHARCOAL FILTER
1. Before performing maintenance on unit, close any main shut-off valve
located upstream of filter. Bleed off residual air in unit.
2. To open filter, press button located on clamp ring and rotate ring either
clockwise or counterclockwise while pulling down on ring. The metal bowl
guard and plastic bowl can then be removed from the filter body.
3. Remove the filter element by loosening counterclockwise. Clean or replace
the filter element. Frequency of element replacement will depend upon air
quality, air usage and condition of the air piping. It is recommended to
check the element change indicator daily and replace element when
indicator turns red.
4. Inspect o-ring for damage. Replace if necessary.
5. Inspect plastic bowl for signs of damage such as cracks, crazing or deteriora tion. Replace if necessary.
Note
6. The filter change indicator only operates when air is flowing. It will always be
green when there is no air flow.
Figure 4 - HAF-505
(Indicator Not shown)
1
1A
4
2
3
5
1. Before performing maintenance on
unit, close any main shut-off valve
located upstream of filter. Bleed off
residual air in unit.
2. To open filter, press button located
on clamp ring and rotate ring either
clockwise or counterclockwise while
pulling down on ring. The metal bowl
guard and plastic bowl can then be
removed from the filter body.
3. Remove the filter element by loosen ing counterclockwise. Clean or replace
the filter element. Replace the char coal element when it no longer re moves oil vapor odors or when the
red indicator is visible.
4. Inspect o-ring for damage. Replace if
necessary.
5. Inspect plastic bowl for signs of dam age such as cracks, crazing or deterio ration. Replace if necessary.
HAF-517 Parts List
Replace- Ind.
Ref. ment Parts
No. Part No. Description Req.
1 HAF-404 Filter Change Ind. 1
(Not shown)
1A --- Body 1
2 --- O-Ring 1
3 HAF-36 Filter Element and 1
O-Ring Kit
4 HAF-11 Manual Drain 1
5 HAF-8 Plastic Bowl 1
6 HAF-19 Metal Bowl Guard 1
7 HAF-409 Clamp Ring 1
HAF-505 Parts List
Ind.
Ref. Replacement Parts
No. Part No. Description Req.
1 HAF-404 Filter Change Ind. 1
(Not shown)
1A Body 1
2 O-Ring 1
3 HAF-28 Filter and O-Ring Kit 1
4 HAF-18 Automatic Drain 1
5 HAF-8 Plastic Bowl 1
6 HAF-19 Metal Bowl Guard 1
7 HAF-409 Clamp Ring 1
6
7
Figure 5 - HAF-517
1 (not shown)
1A
4
2
3
5
6
7
Page 5
MAINTENANCE - AIR PRESSURE
REGULATOR HAR-507
1. Occasionally remove bottom plug (7)
and clean valve seat (11) and body.
Clean parts with denatured alcohol,
wipe off seat and blow out body with
compressed air.
2. To disassemble regulator, remove
screws, bonnet, spring and spring
button. Diaphragm assembly can now
be removed.
3. Check all o-rings for signs of damage.
Replace if necessary.
4. Reassemble parts. Insert stem of valve
through hole in regulator body. Install
spring and o-rings. Screw bottom
plug into body.
Note
Erratic operation or loss of
regulation is usually due to dirt
in the valve area and cleaning
is necessary. If cleaning does
not correct the problem, replace
the items included in Repair Kit
KK-4977. If unit leaks air at A ,
install Repair Kit KK-4977.
Figure 6
HAR-507
1
A
2
3
4
9
5
6
10
8
MAINTENANCE - FLOW-THRU
REGULATOR
Do not submerge regulator or
components in solvent or use
solvent to clean regulator parts.
Damage may occur to regulator
and components. Use a cloth
dampened in warm, soapy water
to clean exterior of regulator.
Note
This unit may be serviced without removing the unit from the
compressed air line.
1. Frequency of servicing depends largely
on the condition of the compressed air
system and the degree of contamina tion in the system.
2. Before attempting to service this
product in-line, depressurize both
the upstream and downstream sides
of regulator.
3. Remove the bottom plug, valve spring
and valve assembly. Inspect all seals
and components for damage and re place as required. Clean seals and
components with mild detergent and
water. Use a clean, dry cloth to wipe
any contamination from valve seal
inside the body. Lubricate the valve
Figure 7 - HAR-508 Regulator
SB-6-159-H Page 5
stem and lower valve o-ring seal with
a light coat of MAGNALUBE-G or simi lar lubricant. Reassemble. Bottom plug
torque should not exceed 25 in./lbs.
(2.8 N-m).
4. To replace main spring or diaphragm,
turn adjusting knob counterclockwise
to remove all spring force, then re move bonnet. Remove the adjusting
screw assembly, main spring, slip ring
and diaphragm assembly. Inspect the
diaphragm and the relief seat for dam age and contamination. Replace dia phragm assembly if necessary. Clean
the relief seat with a soft dry cloth.
Reassemble in reverse order making
sure the slip ring is properly posi tioned on top of the diaphragm.
Bonnet torque should not exceed
120 in./lbs. (13.6 N-m).
5. Before returning unit to service, en sure that all seals have been properly
reinstalled or replaced and compo nents requiring torque values have
been properly set.
6. If regulated pressure begins to creep
(an uncontrolled rise in regulated
pressure), it will most likely be caused
by contamination on the valve seat.
7. If the unit leaks from the vent holes in
the bonnet, it may be caused by con tamination, deterioration or damage
to the valve seat or diaphragm relief
seat. Replace any damaged or worn
components.
Knob
Panel
Nut
Bonnet
11
12
13
14
7
PARTS LIST - Model HAR-507 Regulator Assembly
Ind.
Ref
Replacement
No. Part No. Description Req.
1 --- #10-32 x 9/16 Fillister 6
Head Screw
2 HAR-14 Cover 1
3 --- Spring Button 1
4 --- Diaphragm Spring 1
5 --- Body 1
6 --- Pipe Plug 1/4" NPT(M) 1
7 --- Bottom Plug 1
8 KK-4977 Repair Kit (includes 1
Items 9 thru 14)
9 --- Diaphragm Assembly 1
10 --- O-Ring 1
11 --- Valve 1
12 --- O-Ring 1
13 --- Spring 1
14 --- O-Ring 1
Parts
*Thrust
Washer
*Adjusting
Screw
Assembly
*Main
Spring
*Slip
Ring
*Diaphragm
Assembly
*KK-5045
Diaphragm
Repair Kit
Body
Cover
*Bottom
Plug
O-Ring
Body
Assembly
*Valve
Assembly
*Valve
Spring
Bottom
Plug
Page 6
Page 6 SB-6-159-H
HAF-18 Automatic Drain
Note
The automatic drain includes a
float. If water gets into the float,
the automatic drain may not
function properly. Under normal
conditions, water will not enter
the float. However, water can get
in the float if the filter bowl is
washed with the drain installed
or if air line contamination causes
the drain mechanism to stick.
You can confirm the automatic drain is
not operating if the water level in the
plastic bowl is higher than the top of
the automatic drain.
3. Slide flat off flat guide (See Figure
(9).
Float Guide
Float
Figure 9
4. Using a knife edge, carefully pry off
flat cap (See Figure (10).
Pry apart with knife edge.
(Inside view of float)
Rubber
Seal
Figure 11
7. Replace the float cap (again, be certain
the rubber seal, Figure 11, is in place).
8. Slide float over float guide.
9. Snap float cover onto bottom piece.
Float
Stem
To remove water from the float, follow
these instructions. Be careful not to lose
or damage any internal parts of the automatic drain (replacement parts are not
available - complete drain replacement
will be necessary).
1. Remove automatic drain from plastic
bowl by loosening plastic retaining
nut. Keep retaining nut and o-ring
for reassembly later.
2. Using a knife edge, carefully pry apart
the float cover and bottom piece
(See Figure 8).
Pry apart with knife edge.
Bottom Piece
Float Cover
Figure 8
Cap
Figure 10
5. Clean inside of flat. Remove all traces
of water or dirt.
6. Insure rubber seal is in place in the
center of the flat stem (See Figure 11).
If the seal comes out, press it back in
place in the recess of the stem.
10. Install automatic drain into bowl. Be
sure o-ring is in place (between the
drain and bowl). Tighten the plastic
retaining nut firmly by hand.
11. Monitor the automatic drain for
proper operation. If it fails to operate
properly, replace with a new unit.
Note
If the Float Guide inadvertently
came apart, refer to Figure 12
and instructions.
Note - Float Guide
Be sure to reassemble all parts as
shown into the float guide. Snap
float guide cover into bottom piece.
Figure 12
Float
Guide
Cover
Small
Spring
Actuator
Pin
Flat view of
Spring Disc
Large
Spring
Bottom
Piece
Page 7
MAINTENANCE - DESICCANT DAD-1
1. Replace the desiccant when the humidity indicator changes to a pink
color. Remove the pipe plug at the
bottom of the tank. Allow the material
to drain into a two (2) gallon or larger
container.
2. Once all the material has been removed, replace the pipe plug (see
"Note" following) and tighten securely
(air tight).
Note
Use PTFE tape on pipe plug
threads and all threaded fittings
to facilitate removal in the future.
Do not use loctite or any material
that may bond and make removal
difficult.
3. Replace the DAD-3 humidity indicator paper (supplied with DAD-1 Dessiccant) by removing the DAD-400
humidity indicator. Pry out the old
paper and push in the new paper
(printed side facing away from the
glass).
4. Remove the pipe plug on top of the
unit.
5. Using a funnel (suppplied with desiccant), fill the unit using DeVilbiss
Desiccant Material Part No. DAD-1
(19-0831) until full.
6. Replace the pipe plug (see "Note"
above) and tighten until air tight.
7. The humidity indicator will return to
a blue color within five minutes.
8. The desiccant material should be
disposed of properly.
9. Refer to the appropriate service
bulletin for checking the filters and
components.
Note
A desiccant Tune-Up Kit Part No.
DAD-600, is available. Contains
the following parts to completely
recondition a desiccant air station:
Part No. Description Qty.
Supplied
DAD-1 Desiccant 1
---
Humidity Indicator 1
HAF-6 #1 Filter Element 1
and O-Ring
DAD-8 Replacement Instructions (for filter
between the flow-thru regulator and the
desiccant tank air inlet: Replacing the air
filter is not normally needed. It is required
only when the filter has been damaged or
plugged because the unit was not properly
maintained.
10. Be sure air supply to unit is shut off
and bleed off all air pressure from the
DAD unit.
11. Make sure the desiccant material is
drained from unit per above instructions.
12. Disconnect the unit at the union.
Remove the filter bowls and filter elements from both the first and second
stage filters of the unit.
13. Use an open end 7/8" wrench and
remove the hex nipple between the
DAD tank and the flow-thru regulator.
The nipple should unscrew out of the
tank.
14. Using a needle nose pliers, remove
the wire screen in the tank fitting.
Note
If the retainer is plastic, use a 1/4"
square thread extractor or 1/4"
square bar stock to unscrew the
retainer out of the tank.
15. Use a #4 Phillips screwdriver and
reverse the above procedures to
install a new DAD-8 filter. Install
about halfway into the tank fitting.
16. Reverse procedure to reassemble.
Refill with desiccant.
DAD-8 Replacement Instructions (for the
filter between the air regulator and the
desiccant tank).
17. Be sure air supply to unit is off and
bleed all air from the DAD unit.
18. Be sure all desiccant material is
drained from the unit. Remove the
air regulator (11) from tank by placing
a 7/8" wrench on the tank bushing &
1-1/8" wrench on the regulator.
SB-6-159-H Page 7
19. Remove the brass bushing from the
tank using a 7/8" wrench. The bushing may have a stainless steel screen
attached. If so, cut the screen off
the bushing with a knife. It will be
replaced by the DAD-8 filter. If there
is no S/S screen attached, follow the
steps below.
Note
If the filter is plastic, use a 1/4"
square thread extractor or 1/4"
square bar stock to unscrew the
filter from the tank.
20. Use a #4 Phillips screwdriver and reverse the above procedures to install
a new DAD-8. Install about halfway
into the tank fitting.
Note
The air regulator can be installed
back on the tank or additional
piping can be installed to pipe
the air to a different location.
Remember that the volume of
air flow can be affected by the
pipe and distance to the new
location. All fittings are regular
pipe fittings.
21. Reverse procedure to reassemble.
Refill with desiccant.
22. Before placing unit back into service,
make sure plastic bowls and metal
bowl guards are properly installed
and securely locked in place.
23. Confirm automatic drain operates
properly after unit is in operation.
Replace if necessary.
Refer to SB-6 149 for further instructions.
ACCESSORIES
HAF-407
Mounting Bracket Assembly Kit
WARRANTY
This product is covered by DeVilbiss' 1 Year Limited Warranty.
DeVilbiss Sales and Service: www.devilbiss.com
DeVilbiss
DeVilbiss has authorized distributors throughout the world. For technical
assistance or the distributor nearest you, see listing below.
U.S.A./ Canada Customer Service Office:
195 Internationale Blvd., Glendale Heights, IL 60139
Toll-Free Telephone: 1-800-992-4657 (U.S.A. and Canada only)
Toll-Free Fax: 1-888-246-5732
DeVilbiss Automotive Refinishing
DeVilbiss has authorized distributors throughout the world.
For equipment, parts and service, check the Yellow Pages
under “Automotive Body Shop Equipment and Supplies.”
For technical assistance, see listing below.
U.S.A./ Canada Customer Service Office:
11360 S. Airfield Road, Swanton, OH 43558
Toll-Free Telephone: 1-800-445-3988 (U.S.A. and Canada only)
Toll-Free Fax: 1-800-445-6643
Page 8
Page 8 SB-6-159-H
CLEANAIR™ AIR PIPING RECOMMENDATIONS
The plumbing of your shop air lines is very important. Correct
installation is necessary for the proper performance of your
equipment - for an uncontaminated air supply and for sufficient
pressure to your breathing apparatus and spray gun.
Correct air line piping is so important that this one factor alone
can reduce contaminates in your air supply up to 75%. Reducing contaminates to the filter also reduces the frequency of filter
replacement, maintenance, and of course reduces the risk of
contaminates to the painter and paint supply.
Even the size of the pipe is critical. Using pipe that is too small
in diameter can cause a pressure drop.
Example: If an air compressor delivers 100 psi through a 100'
pipe 1/2" in diameter, there's greater pressure drop than if a 3/4"
diameter pipe were used. The chart on the back page provides
recommended piping sizes..
AIR LINE PIPING GUIDE
1 After leaving the air compressor, the air line should go
straight up as high as possible. This helps prevent any water
from leaving the compressor and travelling through the
pipe.
2 Horizontal pipes should slope back towards the compressor
at least 4" per 50'. As warm air leaves the compressor, it
cools and thereby water vapor condenses as it travels
through the pipe. This water, a problem in itself, also can
cause scaling and rust inside the piping. The backward
sloping of the pipe helps drain these contaminates back
toward the compressor drain which should be drained
daily.
3 A take off should come from the top of the main air supply
line at each air drop. This reduces the risk of water and other
contaminates from traveling down the drop into the water
separator.
3
5
Figure 13 - CleanAir™ Piping
2
6
4 Pipe diameter must be of sufficient size for the volume of
air being passed as well as the length of pipe used. This
will minimize pressure drop. See chart.
5 First air drop should be at least 25' from the compressor,
although 50' is optimum. This allows the compressed air
to cool so any condensation can occur before it gets to the
air filter.
6 Shut-off valves are installed before the point of use filter.
This allows air to be shut off for filter maintenance.
7 Point-of-use filter - Strongly recommended for eliminating
any remaining contaminates. The DeVilbiss CleanAir type
air control units are most effective in providing a truly
contaminant-free air supply.
8 Drain valve - The daily draining of the system at each outlet
disposes of the contaminants that build up in the air supply.
9 Drain the compressor trap daily if equipped with a manual
drain.
Proper maintenance of the air compressor can reduce airborne
contaminants such as particles and oils, and reduce heat and
operating cost. Check air filters, oil level and perform regular
maintenance per operators manuals.
MINIMUM PIPE SIZE RECOMMENDATIONS CHART
Compressor Compressor Main Min. Pipe
Size Capacity Air Line Diameter
1-1/2 and 2 HP 6 to 9 CFM Over 50 ft. 3/4"
3 and 5 HP 12 to 20 CFM Up to 200 ft. 3/4"
Over 200 ft. 1"
5 to 10 HP 20 to 40 CFM Up to 100 ft. 3/4"
100 to 200 ft. 1"
Over 200 ft. 1-1/4"
10 to 15 HP 40 to 60 CFM Up to 100 ft. 1"
100 to 200 ft. 1-1/4"
Over 200 ft. 1-1/2"
3
4
6
1
9
8
For normal
compressed
air systems
having average
amounts of
airborne contaminants.
7
8
Add drain leg with
blow down valve at
each station when
compressed air is
extremely wet/dirty.
5/12 ©2012 DeVilbiss All rights reserved. Printed in U.S.A.
7
8
Add final
drain leg for
extremely
wet/dirty air.
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