Failure to follow the instructions
and procedures in this manual or,
misuse of this equipment will
VOID its warranty!
WARRANTY NOTICE
PART NUMBER:
KEEP FOR
FUTURE
REFERENCE
USER/SERVICE MANUAL
©SULLAIR CORPORATION
02250194-770 R00
OIL WATER SEPARATOR FOR
COMPRESSED AIR CONDENSATE
WITH ACTIVATED CHARCOAL FILTERS FOR
CONDENSATE AND EXHAUSTED AIR
OWS-88 • OWS-2I0 • OWS-420
OWS-880 • OWS-I700 • OWS-2I00
AIR CARE SEMINAR TRAINING
Sullair Air Care Seminars are courses that provide hands-on instruction for the proper operation, maintenance,
and servicing of Sullair products. Individual seminars on Industrial compressors and compressor electrical
systems are offered at regular intervals throughout the year at Sullair’s corporate headquarters training facility
located at Michigan City, Indiana.
Instruction includes training on the function and installation of Sullair service parts, troubleshooting common
faults and malfunctions, and actual equipment operation. These seminars are recommended for maintenance,
contractor maintenance, and service personnel.
For detailed course outlines, schedule, and cost information contact:
SULLAIR TRAINING DEPARTMENT
1-888-SULLAIR or
219-879-5451 (ext. 5623)
www.sullair.com
- Or Write -
Sullair Corporation
3700 E. Michigan Blvd.
Michigan City, IN 46360
Attn: Service Training Department.
TABLE OF CONTENTS
SECTION 1—DESCRIPTION
6 1.1 OIL WATER SEPARATOR MODELS
SECTION 2—INSTALLATION & MAINTENANCE
11 2.1 PLACE OF INSTALLATION
11 2.2 FLOW OF CONDENSATE
11 2.3 CONNECTIONS
11 2.4 START-UP
11 2.5 CONDENSATE FLOW RATE
11 2.6 WASTE OIL
11 2.7 DISCHARGING CLEAN WATER
11 2.8 INSPECTIONS
13 2.9 FILTERING
13 2.10 FILTERS CHANGING
14 2.11 CHECKING OF DISCHARGING WATER
14 2.12 DISPOSAL
14 2.13 ENCLOSURES
15 2.14 TECHNICAL INFORMATION ON THE OIL-WATER SEPARATOR
15 2.15 OPERATING INSTRUCTION
15 2.16 INFLUENCE OF THE COMPRESSOR OIL ON THE EFFICIENCY
16 2.17 CONSEQUENCE
16 2.18 WHEN ARE THE FILTERS SATURATED?
16 2.19 CONCLUSION
17 2.20 OPTIONAL LEVEL CONTROL INSTALLATION
SECTION 3—TEST & SERVICE LOG
19 3.1 GENERAL INFORMATION
19 3.2 TESTING OF THE DISCHARGED CONDENSATE
19 3.3 TESTING THE CONDENSATE WITH OIL TEST PAPER
19 3.4 ASSESSMENT MEASUREMENT RESULTS WITH THE OIL TEST PA-
PER
TABLE OF CONTENTS
Section 1
5
OIL WATER SEPARATOR
DESCRIPTION
Compressed air holds water and oil vapor. Once that
vapor cools into a liquid (condensate), it is a dirty, oily
watery mixture that should not be simply dumped
down the drain. The condensate is approximately
95% water and 5%. therefore a Sullair OWS has
been specially developed to reduce or eliminate the
amount of oil in the condensate and reducing or
eliminating disposal costs and related issues.
Type Sullair
Part No. Body Material
Max.
Working
Temp
Max.
Working
Pressure
Max.
Compressor
Capacity
Dimensions (mm)
Wt.
Connections
Kit
Width Depth Height Condensate
-inlet
Water-
discharge
Oil-
discharge
OWS-88 02250193-619 Polyethylene 95ºF 0 88 11 8.3 21.7 7 3x1/2” 1” — 02250193-
641
OWS-210 02250193-620 Polyethylene 95ºF 0 210 17.2 12.8 35.8 18 4x1/2” 1” — 02250193-
642
OWS-420 02250193-621 Polyethylene 95ºF 0 420 24.4 20.5 38 25 4x1/2” 1” — 02250193-
643
OWS-880 02250193-622 Polyethylene 95ºF 0 880 24.4 20.5 45.7 40 4x1/2” 1” 1” 02250193-
644
OWS-1700 02250193-624 Polyethylene 95ºF 0 1700 33.5 20.5 45.7 60 4x1/2” 1” 1” 02250193-
645
OWS-2100 02250193-625 Polyethylene 95ºF 0 2100 33.5 20.5 45.7 65 4x1/2” 1” 1” 02250193-
646
Note:
ATF (Automatic Transmission Fluid) cannot be separated by the OWS oil/water separator
SCFM is at 102 psig and 95¡F inlet conditions with 65% relative humidity.
Capacity conditions can vary depending on compressor fluid used.
OIL WATER SEPARATOR SECTION 1
6
1.1 OIL WATER SEPARATOR MODELS
Figure 1-1: OWS-88
SECTION 1 OIL WATER SEPARATOR
7
Figure 1-2: OWS-210
8
NOTES
Figure 1-3: OWS-420
SECTION 1 OIL WATER SEPARATOR
9
Figure 1-4: OWS-880
OIL WATER SEPARATOR SECTION 1
10
Figure 1-5: OWS-1700/2100
Section 2
11
OIL WATER SEPARATOR
INSTALLATION & MAINTENANCE
2.1 PLACE OF INSTALLATION
The OWS shall be installed on a clean, smooth and
level surface. The OWS must be installed
horizontally and should not be installed in direct
sunlight.
2.2 FLOW OF CONDENSATE
The condensate can be fed with or without pressure.
2.3 CONNECTIONS
See Table 2-1.
2.4 START-UP
OWS - 88
Remove lid and filter. Fill the OWS with water until
the water runs out of the water discharge. Insert the
filter. Clean the tank and water inlet as needed. Re-
install the lid and filter, the device is now ready for
operation.
OWS - 2I0/420
Unscrew the dome. Fill the OWS with water until
water runs out of water discharge. Insert the filter.
Clean the tank and the water inlet as needed. Secure
the dome back on, the OWS is now ready for
operation.
OWS - 880-2I00
Unscrew the lid. Fill the OWS with water until water
runs out of water discharge. Insert the filter. Clean
the tank and the water inlet as needed. Secure the
dome back on, the OWS is now ready for operation.
2.5 CONDENSATE FLOW RATE
The condensation flow will depend on the
compressor and the type of oil used in the
compressor. For further information see Section 2.4:
Start-up on page 11. The condensate must be fed
continuously. Any sporadic input of large quantities
(e.g. when emptying the tank by hand) should be
avoided.
2.6 WASTE OIL
The waste oil flows out of the tube to which an oil
drain hose will be connected, leading to an oil-
container. The OWS-88-2I0-420 does not have an oil
discharge (oil-container). The separated oil will be
collected in the filter and will be discharged with
changing the filter.
2.7 DISCHARGING CLEAN
WATER
The clean condensate flows out through the tube
(R1") do not reduce the outlet connection.. The water
drain hose (R1” - 1”) must be connected with down
slope to the sewage system.
2.8 INSPECTIONS
A regular inspection of the running condensate and a
early change in filters (if needed) is helpful for a
flawless system. See Maintenance book provided
with your OWS.
See Section 2.20 for optional Level Control
instructions.
Table 2-1: CONNECTIONS OWS-88 OWS-210/420 OWS-880 OWS1700 OWS-2100
Condensate Inlet 3 x 1/2” 4 x 1/2” 4 x 1/2” 4 x 1/2” 4 x 1/2”
Water Discharge 1 x 1” 1 x 1” 1 x 1” 1 x 1” 1 x 1”
Oil Discharge - - 1 x 1” 1 x 1” 1 x 1”
OIL WATER SEPARATOR SECTION 2
12
SECTION 2 OIL WATER SEPARATOR
13
2.9 FILTERING
.
2.10 FILTERS CHANGING
Begin by draining the condensate from the OWS and
properly dispose of the oily condensate. Unscrew the
dome (OWS-2I0-420), and/or remove lid and filter
(OWS-88). Carefully remove the combined filter from
the filter chamber. Clean the entire OWS. Insert the
new filter. Fill the separator with clean water until
water runs out of the water discharge! Insert the filter
and close the device. The separator is ready for
operation. The activated charcoal filter inside the
expansion chamber (OWS-2I0-2I00) can be changed
after removing the lid from the dome.
NOTE
Only use recommended spare filters! Use
manufacturer's recommended filter ele-
ments and spare parts for optimal operation.
Table 2-2: TECHNICAL DATA
Model Sullair
Part No.
Compressor
-capacity Dimensions (mm) weight Connections
Kit
cfm width depth height kg Condensate
inlet
Water
outlet
Oil
outlet
OWS-88 02250193-619 88 280 210 550 5 3x 1/2” 1” - 02250193-641
OWS-210 02250193-620 210 437 325 908 17 4x 1/2” 1” - 02250193-642
OWS-420 02250193-621 420 300 260 870 25 4x 1/2” 1” - 02250193-643
OWS-880 02250193-622 880 620 520 1160 45 4x 1/2” 1” 1” 02250193-644
OWS-1700 02250193-624 1700 850 520 1160 65 4x 1/2” 1” 1” 02250193-645
OWS-2100 02250193-625 2100 850 520 1160 70 4x 1/2” 1” 1” 02250193-646
* Capacity for screw-compressors with non emulsifying oils in use.
For other compressor -types or other types of compressor oils, you have to reduce the max. capacity.
NOTE
It is recommended to soak the Charcoal
filter for 4 to 6 hours in clean water before
it is placed into the OWS.
By soaking the charcoal filter the air is
removed from the charcoal and there-
fore... the filter is immediately active.
Table 2-3: Kits—All required filters to refresh unit
02250193-641 Kit OWS-88 Kit, Service OWS-88
02250193-642 Kit OWS-210 Kit, Service OWS-210
02250193-643 Kit OWS-420 Kit, Service OWS-420
02250193-644 Kit OWS-880 Kit, Service OWS-880
02250193-645 Kit OWS-1700 Kit, Service OWS-1700
02250193-646 Kit OWS-2100 Kit, Service OWS-2100
OIL WATER SEPARATOR SECTION 2
14
2.11 CHECKING OF
DISCHARGING WATER
(see also Test & Service Log)
A test sample should be taken from the test valve (8).
The water must be clean and clear. If the water is
dirty the filters should be changed.
WEEKLY
Take a sample out of the test-valve
• Optical check (see also Test & Service
Log)
• Check with oil-test-paper (see also Test &
Service Log)
SEMIANNUAL
• Replace filters and clean tank as needed
ANNUAL
• Replace filters (min. once a year, if necces-
sary more often!)
• Send a sample of the filtered condensate
to a certified laboratory for evaluation.
The results from the laboratory should be noted in
your “Test & Service Log”. You should also note
when the filters were changed and when the
maintenance work was carried out.
2.12 DISPOSAL
The saturated filters have to be disposed of
according local EPA regulations. For details contact
a disposal company in your area.
2.13 ENCLOSURES
Test & Service Log
NOTE
After the initial operation we recommend the
maintenance intervals shown below.
SECTION 2 OIL WATER SEPARATOR
15
2.14 TECHNICAL INFORMATION
ON THE OIL-WATER
SEPARATOR
From time to time problems occur which require a
more detailed knowledge of the OWS. Below are
some information and rules which will help you.
2.15 OPERATING INSTRUCTION
Please read all instructions carefully , especially the
paragraph “condensate flow rate“, and be sure to
comply with it. The condensate should be fed
automatically, when possible; input under pressure is
possible by means of the expansion nozzle the
device is equipped with.
2.16 INFLUENCE OF THE
COMPRESSOR OIL ON THE
EFFICIENCY
In the past compressor oils were only chosen to suit
the compressor. The problem of the condensate
disposal was hardly considered or completely
neglected. This is why many companies still use
compressor oils which emulsify strongly with water
and some of which form stable emulsion.
Table 2-4: Capacity of OWS - Oil Water Separators in cfm of installed compressor-capacity
Type of Compressor Screw-Compressor
OWS Model OWS-88 OWS-210 OWS-420 OWS-880 OWS-1700 OWS-2100
non emulsified oils 88 210 420 880 1700 2100
Rotation-Compressor (oil-flooded)
OWS Model OWS-88 OWS-210 OWS-420 OWS-880 OWS-1700 OWS-2100
non emulsified oils 88 210 420 880 1700 2100
Piston Compressor (1 and 2 stage)
OWS Model OWS-88 OWS-210 OWS-420 OWS-880 OWS-1700 OWS-2100
non emulsified oils 44 100 200 440 800 1000
NOTE
1. The capacity above are maximum
figures.
2. Reduce the capacity when the
OWS is installed in difficult condi-
tions (e.g. hot dirty, dusty condi-
tions).
3. Divide capacity by 2 for conden-
sate delivered through timed sole-
noid drains.
OIL WATER SEPARATOR SECTION 2
16
2.17 CONSEQUENCE
The condensate is dirty and remains so even after
fairly long settling time. Under certain conditions it
builds up a solid foam, which floats on the water
surface and prevents the function of the separator
(outlet and coal choke up).
When the filters are unused, they are able to absorb
some of the oil from the emulsion. Sullair can not
guarantee that the OWS will work on all emulsion.
Nor can we guarantee that for all emulsion a 22ppm
can be maintained. It is possible, that the filters are
saturated within a few days or hours. If the filters are
saturated, the condensate level rises and the
condensate flows out through the oil outlet. It is
helpful and recommended to install the optional
available level-control, to recognize very early, when
the filters are saturated.
2.18 WHEN ARE THE FILTERS
SATURATED?
The service life of the filters depend on many factors
such as type of compressor, type of oil, amount of
condensate, tempearture of condensate etc. It
cannot be determined in advance for individual
applications. We recommmend to visually control the
discharging condensate regularly and to change the
filters if necessary.
2.19 CONCLUSION
Adequate conditions (type of oil, amount of
condensate, maintenance, etc.) are a must for a
proper functioning of the device. Therefore it is
extremely important to inform all users and
maintenance personnel of the importance
inspections and proper maintenance.
SECTION 2 OIL WATER SEPARATOR
17
2.20 OPTIONAL LEVEL CONTROL
INSTALLATION
The Level/Filter control, which can be field installed
on all OWS separators, except the OWS-88. The
level-switch is available in two versions:
A. The Single Pole Double Throw level switch. The
contacts are not energized. Customer would sup-
ply voltage to energize a customer supplied
alarm or light. (NS10P)
B. The second version (Art.No. NS10) is battery
charged and has an optical and acoustic alarm
signal.
18
NOTES
Section 3
19
OIL WATER SEPARATOR
TEST & SERVICE LOG
3.1 GENERAL INFORMATION
Environmental control officers may want to see proof
of the regular inspect and maintenance records of
the OWS.
The Test and Service Log is designed to help the
user keep records of the inspection and maintenance
performed on the OWS. There is a pocket on the side
of the OWS where this log can be kept.
After the first use, the following described
inspection should be completed once a week.
Therefore, you are able to determine your
maintenance intervals (filter changes, etc.) for
your particular application.
3.2 TESTING OF THE
DISCHARGED
CONDENSATE
1. Fill the test glass half with condensate taken
from the Test valve full.
2. Close the Test glass and hold the bottom up
against the light.
a. Compare the Condensate sample with the
frosted part of the Test glass.
b. If the condensate sample is clouded equal or
greater than the frosted part of the test glass,
the activated carbon filter must be replaced
(see instructions).
3. Record the test result and the maintenance
work in the adjacent table.
3.3 TESTING THE CONDENSATE
WITH OIL TEST PAPER
1. Dip the test strips into the condensate sam-
ple, move back and forth a few times.
2. Free the test strips of water droplets by
lightly shaking them.
3. Observe color changing of the strips: oil in
the condensate will turn the strip dark blue.
a. No color change or only a few blue spots
on the test strips: Oil content will be under
1-5 mg/ltr. condensate
b. A light blue coloring on the test strip: Oil
content about 5-20 mg/ltr. condensate
c. Dark blue coloration on the test strips: Oil
content more than 20 mg/ltr. condensate
4. Record the test result in the adjacent table.
3.4 ASSESSMENT
MEASUREMENT RESULTS
WITH THE OIL TEST PAPER
The detection of oil in water, especially if they are
finely dispersed oil droplets (dispersion) in milligrams
per liter of water, is possible with absolute certainty
only by chemical analysis. To that extent, the results
of the oil-paper test can only be used as an indication
of need for maintenance of the oil water separator.
The test result is also dependent on the the way the
the test is handled. It is recommended that for
consistency the same person or persons perform the
test each time.
The oil test paper responds only to non-
emulsified oil in the water.
To ensure the above test results a chemical analysis
shall be conducted once a year by a certified
laboratory
OIL WATER SEPARATOR SECTION 3
20
Test and Service Log (unit should be checked 1-4 times a month
Date Name
Filtrate Controls Service Completed
Optical Control Color Change of
Oil Test Paper Water Filter Air Filter
Clear Cloudy None
1-5 mg/ltr.
Few spots
5-20 mg/ltr.
Dark blue
>20 mg/ltr. Tested Changed Tested Changed
Chemical analysis of discharged condensate
If the above tests need confirmation by a chemical analysis, please note the test results below:
1st Test: Date: ______________ Test result: __________ mg oil/litre condensate
2nd Test: Date: ______________ Test result: __________ mg oil/litre condensate
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SULLAIR OWS-2I00 User & Service Manual
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