Omega AOK 20SS Ex User manual

Installation and operating
manual
Document
:
3403490
Rev.
:
001
Date
:
25.9.2020
AOK 20SS Ex

2
Table of contents
1. Introduction........................................................................................................................ 3
1.1. About this manual ....................................................................................................... 3
1.1.1. Purpose of this manual ........................................................................................ 3
1.1.2. Symbols used........................................................................................................ 3
1.2. About this product....................................................................................................... 3
1.2.1. Application ........................................................................................................... 3
2. Safety instructions.............................................................................................................. 4
2.1. Product safety.............................................................................................................. 4
2.1.1. Safety instructions regarding transport and storage........................................... 4
2.1.2. Safety instructions regarding operation .............................................................. 4
2.1.3. Safety instructions regarding installation, maintenance and service.................. 4
3. Appropriate use.................................................................................................................. 5
3.1. Intended usage ............................................................................................................ 5
4. Product description............................................................................................................ 6
4.1. Components ................................................................................................................ 6
4.2. Operation..................................................................................................................... 7
5. Technical data .................................................................................................................... 8
5.1. Technical data AOK 20SS Ex......................................................................................... 8
5.2. Dimensional drawing................................................................................................... 8
5.3. Materials...................................................................................................................... 8
5.4. Pressure equipment directive PED 2014/68/EU ......................................................... 8
6. Installation.......................................................................................................................... 9
7. Maintenance .................................................................................................................... 10
7.1. Service........................................................................................................................ 10
7.2. Spare parts................................................................................................................. 10
8. Transport and storage...................................................................................................... 10
9. Warranty exclusion .......................................................................................................... 11

AOK 20SS Ex - Installation and operating manual
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1. Introduction
Please read the following instructions carefully before installing the product.
Trouble free and safe operating of the product can only be guaranteed if
recommendations and conditions stated in this manual are respected.
1.1. About this manual
1.1.1. Purpose of this manual
This manual is intended to get familiar with the product and its use. The manual contains
important information for operating the product safely and properly. Following the
instructions in this manual will help to avoid dangers, minimise repair costs and downtimes,
and increase the reliability and service of the product.
1.1.2. Symbols used
The following symbols are used in the manual:
Symbol
Meaning
Warning
Do not use excessive force or any tools to operate
Use of safety glasses required
Use of safety equipment gear
Table 1: Symbols used and their meaning
1.2. About this product
1.2.1. Application
The product is intended to be used for automatic discharging of condensate and other
liquids from compressor system.

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2. Safety instructions
2.1. Product safety
Product should only be used in a technically perfect condition and in the intended, safety
and danger-aware method, taking into account the operating instructions.
2.1.1. Safety instructions regarding transport and storage
The product must be transported and stored in its protective packaging until it is
installed.
The product must be stored in dirt-free, moist-free and frost-free space.
2.1.2. Safety instructions regarding operation
The pipeline system must be properly designed and installed so that the drain can be
mounted and operated without tension.
Drain must be properly installed in the correct mounting position.
Operate with the product only with protective equipment.
In the event of malfunction, stop and secure the product immediately. Any fault must
be rectified immediately.
Do not exceed max. operating pressure or operating temperature range (see
Technical data).
2.1.3. Safety instructions regarding installation, maintenance and service
Installation and maintenance work may only be carried out by trained and
experienced staff.
Depressurize the system before carrying out any work on the piping.
Installation and maintenance work may only be carried out when the product is not
under pressure.
Do not exceed max. operating pressure or operating temperature range (see data
label).
Use original spare parts only.
Use the product for the appropriate purpose only.
Can be used in hazardous areas (a product does not have its own potential ignition
source)
In case of toxic or hazardous media, the system must be completely drained before
the product is removed.
In case the product is used with toxic or hazardous media, it must be properly
decontaminated for maintenance.
Personnel must be equipped with appropriate electrostatic conductive (dissipative)
clothing including footwear and non-sparking tools.
Only qualified personnel who pose knowledge and experience with pressurized gas
systems and ATEX applications can operate the device or perform any kind of work
related to the device.
Product must be grounded via dedicated connection.

AOK 20SS Ex - Installation and operating manual
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Only qualified personnel who pose knowledge and experience with pressurized gas
systems and ATEX applications can operate the device or perform any kind of work
related to the device.
3. Appropriate use
3.1. Intended usage
AOK 20SS Ex is intended to drain condensate from compressed system. To collect the
condensate as effectively as possible, the drain should be installed at a low point of the pipe
section.
This is an automatic function and does not need any additional electrical energy. Depending
on the liquid level, a float controls the drainage from the body of a drain via a system of
levers.
The float is dimensioned for draining of condensate of the density of water condensate. The
use with condensate of other density must be checked with manufacturer.
Product shall only be used for its intended purpose!
Any other use shall be considered as inappropriate. Manufacturer shall have no
liability whatsoever for any damage incurred as result.

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4. Product description
4.1. Components
Bill of materials
1
4x
Cheese head screw M8x30
2
4x
Flat washer
3
1x
Pan head screw M5x8
4
1x
External tooth washer
5
1x
Housing lid
6
1x
O-ring sealing 71 x 2
7
1x
Float holder
8
2x
Rivet
9
1x
Nozzle
10
2x
Wire
11
1x
Flat seal
12
1x
Housing
13
1x
Test lever button
14
1x
O-ring sealing 2,5 x 0,65
15
1x
External circlip
16
1x
Lever holder
17
3x
Pan head screw M4x6
18
1x
Float
19
1x
Connection nipple (optional)

AOK 20SS Ex - Installation and operating manual
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4.2. Operation
Drain must be installed bellow pressure vessel, filter element, dryer, cyclone separator or
similar pressure system element. Through connection on the top condensate accumulates in
the drain reservoir. Increasing water level rises the floating buoyancy. When the condensate
level is high enough the floater unblocks the discharge orifice via levers and the condensate
is purged out through output connection. When condensate level drops floater drops with it
and blocks the discharge orifice. This operation prevents air loss.
On the front side of the drain is a TEST button, which if rotated in a clockwise direction.
Button lifts the float, which opens the outlet and drains the condensate. This can be done at
any time. The button can also be used as a release of pressure from the system. But for
longer release times of compressed air from the system, we recommend disconnecting all
devices from the OUTLET connection, such as traps, oil separators, piping, etc.
It is forbidden to use excessive force or other tools to rotate the test button.
Test ON/OFF

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5. Technical data
5.1. Technical data AOK 20SS Ex
Technical data
Operating temperature
1,5 - 120 °C
35 –248 °F
Operating pressure range
0 - 20 bar(g)
0 - 290 psi
Minimum recommended operating
pressure
1,5bar(g)
21,8 psi
Operating media
Condensate (air, water, oil)
Nominal discharge capacity
167 l/h (at 7barg)
252 l/h (at 16barg)
Discharge orifice cross section
1,8mm
0,0708 inch
Inlet connection
G ½” (NPT on request)
Outlet connection
G ½” (NPT on request)
Reservoir volume
0,4 l
Weight
5,835 kg
Dimensions (A x B x C)
157 mm x 100 mm x 100 mm
Valve type
Direct acting, normally closed
Capacity calculation
For rough calculation of discharge capacity at certain pressure use following equation:
   Example: if operating at 7barg;     
5.2. Dimensional drawing
5.3. Materials
Part
Material
Housing material
Stainless steel 1.4408
Fittings, Screws
Stainless steel 1.4404 / A4
Floater
Stainless steel 1.4404
Sealing
NBR
5.4. Pressure equipment directive PED 2014/68/EU
Product
Category, module
AOK 20SS Ex
Not required

AOK 20SS Ex - Installation and operating manual
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6. Installation
Before installing the product, check that thy system is
not under pressure. Wear necessary personal protective
equipment and folow the safety rules when working
with pressure equipment.
The product should be unpacked at the installation location and inspected for
damage prior to installation. Damaged product must not be installed.
It is necessary to ensure that covers have been removed from all the connections
beffor installation.
Before connecting the product, blow compressed air through the piping in order to
thoroughly clean out any impurities within it.
Install the drain at a level below the receiver, if not the receiver will fill up with
condensate.
Earthing of the product must be done with wire of cross-section ≥1.5 mm2. Make
earthing on position 3 and 4.
It is recommended to install a ball valve between the product and the system. This is
done to ensure easy maintenance work on the product without the needed to empty
the entire system.
It is recommended to add strainer, and then the connection nipple (position 19) to
allow the flow of air upward.
After initial run, open the product and clean all components.
It is strongly recommended that waste condensate from discharge port is connected
to water treatment application, such as water oil separator to protect the
environment from pollution and to comply with environmental laws.

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7. Maintenance
The automatic operation of the product requires maintenance to ensure that it continuous
to operate perfectly.
Before maintenance depressurize the product and keep
to the safety rules when working with pressure
equipment.
Weekly:
Rotate the "Test" button and manually drain the accumulated condensate until air begins
to blow from the drain. If a significant amount of water (more than 0.5 litres) exits the
valve then the drain must be thoroughly cleaned.
Monthly:
Visually check seals on the body and the pipe connection, make sure there is no leakage.
If strainer is installed prior the drain, check and clean it.
Yearly:
Clean interior of the reservoir regularly. Intervals of cleaning depend on contamination
of condensate.
Replace the sealings if necessary.
Make a visual check of the drain and make sure there is no visual damage or leakage.
7.1. Service
It is recommended to clean the reservoir at least once a year. Sealing elements are subject
to wear, which depends on various operating parameters such as pressure, temperature,
dirt content, etc. It is also recommended to change seals.
7.2. Spare parts
Replacement seals are available on demand. Please contact your distributor or
manufacturer.
8. Transport and storage
A product must be handled, transported and stored with care:
The product must be transported and stored in its protective packaging until it is
installed.
When the product is stored prior to installation, it should be kept in closed rooms
and protected against harmful influences such as dirt, moist and frost.

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9. Warranty exclusion
The guarantee shall be void if:
The installation and operating manual was not followed with respect to installation,
initial commissioning and maintenance.
The unit was not operated properly and appropriately.
The unit was operated when it was clearly defective.
Non-original spare parts or replacement parts were used.
The unit was not operated within the permissible technical parameters.
Unauthorized constructional changes were made to the unit or if the unit has been
opened/disassembled by an unauthorized person.

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OMEGA AIR d.o.o. Ljubljana
Cesta Dolomitskega odreda 10
SI-1000 Ljubljana, Slovenia
Tel.: [phone]
Fax.: [phone]
E-mail: [email protected]
www.omega-air.si