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 hydrocar-
bons 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 remain-
ing 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 breath-
able air, as defined in Compressed Gas
Association (CGA-G7-1-1997):
Oxygen = 19.5-23.5% (Typical
atmospheric levels)
Oil (condensed) = 5 mg/m (mil-
ligrams per cubic meter) maximum
Carbon Monoxide (CO) = 10 ppm
(parts per million) max.
Carbon Dioxide (CO
2
) = 1OOO ppm
(parts per million) max. (Typical
atmospheric levels)
Odor = The presence of a pro-
nounced 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.
SB-6-159-h
Replaces SB-6-159-G
SERVICE BULLETIN
DAD-503 (130089) AIR STATION WITH DESICCANT
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 filter 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 filters 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 com-
pressed air systems only. Do not use
for liquids or gasses other than air.
• Do not use where pressure or tem-
perature 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 car-
bon monoxide is present. This unit
does not remove carbon monoxide.
A carbon monoxide monitor should
be incorporated into your air sup-
ply line to warn of the presence of
carbon monoxide.
