OMEGA AIR AWS-C User manual

3400760 - AWS-C_v1.00-OmegaAir_eng_ver03012013
Installation and operating
manual
AWS-C Tyre inflation controller
Please read the following instructions carefully before installing tyre inflation controller
service. Trouble free and safe operating of the unit can only be guaranteed if
recommendations and conditions stated in this manual are respected.

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Technical data
Type
AWS-C
Operating temperature
-20°C do 45°C
Voltage
230V; 50Hz
Power
30VA
Max. Operating pressure
0 do 10bar
Recommended min. inlet pressure
min 10 bar
Inlet connection
Push connection ø8 ( 1/4” )
Outlet connection
Push connection ø8 ( 1/4” )
Resolution for pressure set
0,1 bar
Target pressure set range
0,5 do 9,5 bar
Measuring range
0 do 9,9 bar
Accuracy (15°C do 25°C)
±75 mbar
Accuracy (-20°C do 45°C)
±200 mbar
Cable
El. kabel 3x0,75mm2
Protection class
Relay switch (Only one function can be
activated at once. Activation can be done by
manufacturer).
Relay can be switched
based on
Temperature
Light intensity
Pressure
Picture 1: Controller dimensions

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Safety instructions
Depressurize the system before carrying out any work on the piping.
Installation and maintenance work may only be carried out when the device is
not under pressure.
Installation and maintenance work may only be carried out by trained and
experienced stuff.
Disconnect power supply before installation or any maintenance work.
Electrical work must always be carried out by qualified electrician.
Do not exceed max. operating pressure or operating temperature range (see
data label).
Do not use the device in hazardous areas with potentially explosive
atmospheres.
Use original spare parts only.
Use the device for the appropriate purpose only.
Appropriate use
AWS-C tyre inflation controller is intended exclusively for the following purpose:
Indication of pressure in tyres/pneumatics
Correction of pressure in tyres (fill/release pressure)
Any other form of use or one going beyond this shall be considered as inappropriate. We
shall have no liability whatsoever for any damage incurred as a result.

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Description
Picture 2: Bill of material
1 – Aluminium housing
8 - LCD
2 - LED light signal
9 - Silencer (Exhaust)
3 - Button +
10 – Outlet connection for compressed air
4 - Button -
11 – Inlet connection for compressed air
5 – Button manual start
12 – Audible signal
6 – Mounting bracket
13 – Relay cable gland (optional heating cable)
7 – Holes for bracket (mounting on the wall)
14 – El. Power cable gland
7
1
3
4
5
6
9
10
11
12
14
13
2
8

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Installation
AWS-C controller can be installed in two ways .
Picture 3: Mounting on the wall Picture 4: Mounting in the housing
MOUNTIN ON THE WALL
To mount controller on the wall brackets have to be aligned to back side of the controller.
MOUNTING IN THE HOUSING
To mount controller on the wall brackets have to be aligned to front side of the controller.
Connect Inlet connection (picture 1) with source of compressed air.
Connect outlet connection (picture 1) with tyre inflation hose.
Connect the controller to the el. (Electrical work must always be carried out by
qualified electrician)
Quality of the compressed air on the inlet is essential for reliable operating of the controller.
Recomended air quality 3/-/- ISO8573 (pre-filter 3mm).
If compressed air is not dry enough condensation may appear. When device is expected to
operate in temperature below 0°C condense can cause malfunction of the device due to
freezing.

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Start up
At start-up light and audible signal will appear for short time. On the display information
about firmware appear for short time.
Picture 5: Information display at start-up
Inflation procedure / pressure correction
Controller has three modes:
Sleep mode.
Set target pressure mode.
Inflation /pressure correction mode.
SLEEP MODE
When controller is not active (no button is pressed) for more than two minutes it goes
to »sleep mode«. In this mode logo appear and target pressure goes to default value
2 bar.
Picture 6: Logo
If we press any button device will go from »sleep mode« to »set target pressure
mode«. If we connect hose to the tyre during »sleep mode« inflation will not start
automatically.

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SET TARGET PRESSURE MODE
In this mode we can set target pressure in tyre by pressing + and – buttons. Target
pressure value is located in right upper part of display.
Picture 7: Set target pressure
The lowest target pressure value is 0,5 bar. Target pressure can be set in resolution
0,1 bar. The highest target pressure value is 9,5 bar. The highest target pressure
value can be limited to value 8bar, 6,5bar or 5bar. For limitation please contact
manufacturer.
After target pressure is set user can connect hose to the tyre and inflation will start
automatically unless pressure in the tyre is below 0,3 bar. In this case you need to
press button for manual start.
If additional safety is required manufacturer can change firmware so that confirmation
is required before inflation starts.
Picture 8: Confirm start of inflating
Attention
If user presses button for manual start of inflation before hose is connected to the
tyre air will start to blow out of the hose under high pressure. This can be dangerous.

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Inflation / pressure correction
During inflation / pressure correction controller is trying to equalize actual pressure
with set target value. Actual pressure in tyre is displayed in the center of display
during the inflation /pressure correction procedure. Small number in upper right
corner of display is target pressure.
Picture 9: Actual pressure and target pressure values
End of tyre inflation /pressure correction is signalized by audible and visual signal.
After that user can disconnect hose from the tyre and controller will automatically
switch to »set target pressure mode«. If next tyre is inflated within 2 minutes target
pressure value remains the same as it was for previous inflation.
Attention
To interrupt inflation /pressure correction press any button.
Checking pressure in the tyre
If we want to check actual pressure in the tyre without any correction we must set
target pressure to 0bar. Now controller will behave as manometer.
Picture 10: Checking pressure in the tyre mode
To check pressure in the tyre we must connect hose to the tyre and press button for
manual stard. Now we can measure pressure in the range from 0 up to 9,9 bar.
Picture 11: Checking pressure in the tyre
To switch back to »set target pressure mode« press any button

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Language selection
Information on display can be present in four preset languages (default + three
additional languages). Language can be changed by pressing + button. When
controller goes to »sleep mode« selected language goes to default language.
Check settings
You can access “check settings menu” by pressing certain button combination.
Press and hold +, than additionally press and hold -.
While both buttons are being pressed you can see settings. After buttons are
released controller goes back to »set target pressure mode«.
Picture 13: Check settings menu
1
Preset languages
2
Max. set pressure
3
Calibration
4 RELAY
information
x0
Relay OFF
x1
Relay operated by temperature
x2
Relay operated by pressure
x3
Relay operated by light intensity
0x
Relay OFF
Temperature > 5°C
4x
Relay ON
Temperature > 5°C
8x
Relay OFF
Temperature < 5°C
Cx
Relay ON
Temperature < 5°C
5
Info about logo
1
2
4
3
5

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Flowchart
Sleep – show logo
Target pressure sets back to 2bar
Language sets back to default
No event in
last 2 minutes
Set target pressure mode
Target pressure between 0.5bar and 9.5bar or pressure
0.0bar is set by pressing buttons +/-.
The hose is connected to
tyre which is filled to
pressure above 0.3bar
Button
manual start
Controller corrects
pressure in the tyre
An error is detected
Button is pressed
Correction is
successful
Show actual pressure in the
tyre
Target
0.0bar
Hose is disconnected
Button pressed
Button is pressed
Error message
Acknowledge
Yes
No
Warn user to check
the hose
Button is pressed
Target p. above 2.9bar
Acknowledge?
Yes
No
Warn user to connect
the hose
Button
manual
start
The hose is connected
to tyre which is filled to
pressure above 0.3bar
Connect hose message
Acknowledge?
Yes
No
Target pressure
above 2.9bar
Parameter
Controller state
Sleep mode
Inflation/ pressure correction
Set target pressure mode

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Settings and operating data download
To change settings or download operating data please contact manufacturer.
Manufacturer can change settings or download operating data with »service network
interface«.
NO
C
NC
Service
Network

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Troubleshooting
Problem
Possible cause
Solution
LCD display is blank
or off

No el. Power.

Faulty PCB.

Check electricity.

Contact supplier or service.
Tyre inflation did
not start
automatically after
hose is connected
to the tyre

Pressure in the tyre is below o,3
bar

This is normal operation. To start
inflation press button for manual
tyre inflation. ( picture 2).
“CHECK HOSE”
sign on the display

Hose is not connected.
No pressure in the system.

Connect the hose or check if
connection is OK.

Check pressure in the system.
Air leakage

Faulty hose connection.
Faulty solenoid valve.

Dirt in the solenoid valve.

Check connections.
Call supplier or service.
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.
OMEGA AIR d.o.o. Ljubljana
Cesta Dolomitskega odreda 10
SI-1000 Ljubljana, Slovenia
Tel.: [phone]
Fax.: [phone]
E-mail: [e-mail]
www.omega-air.si