ABB EZClean User manual

—
ABB MEASUREMENT & ANALYTICS | OPERATING INSTRUCTION | OI/EZCLEAN-EN REV. A
EZClean
Compressed air supply unit
Measurement made easy
Introduction
The EZClean compressed air supply unit is a rugged,
reliable cubicle that delivers compressed air to an
ABB compressed air adapter nozzle fitted to the
probe.
The air supply (interval/type/duration/frequency/
on-off sequencing) can be configured at the
AWT420 transmitter to enable automatic/scheduled
cleaning of the probe.
For more information
Publications for the associated AWT420 transmitter
and ADS420 optical dissolved oxygen probe are
available for free download from:
www.abb.com/measurement
or by scanning these codes:
AWT420 transmitter ADS420 probe
Search for or click on
Commissioning Instruction


   
Operating Instruction


  
Operating Instruction

Optical dissolved oxygen probe

—
EZClean
Compressed air
supply unit

2EZCLEAN | COMPRESSED AIR SUPPLY UNIT | OI/EZCLEAN-EN REV. A
Contents
1 Health and Safety............................3
Document symbols .................................3
Safety precautions .................................3
Potential safety hazards ............................3
Electrical – high voltage . . . . . . . . . . . . . . . . . . . . . . . 3
Compressed air supply ........................3
Weight .......................................3
Safety standards ...................................3
Product recycling and disposal (Europe only) ....... 4
Restriction of Hazardous Substances (RoHS) ....... 4
2 System overview ............................5
3 Installation..................................6
Wall-mounting .................................... 6
Handrail/wall-mounting ............................7
Pole-mounting .................................... 8
4 Connections.................................9
Pneumatic connections............................ 9
Connect the tubing to compressed air unit . . . . . 9
Connect the tubing to the ABB compressed air
adaptor ......................................9
Relay connections ...........................10
Mains voltage supply ........................10
5 Configuration ..............................11
Sensor Setup......................................12
6 Maintenance ...............................13
Annual maintenance ...............................13
7 Specifications ............................. 14
8 Spares and accessories .....................15
Spares ............................................15
EZClean compressor maintenance kit . . . . . . . . . 15
Air cleaning tubing kit........................15
EZClean compressor pneumatic fittings kit ...15
Accessories .......................................15
EZClean compressor pole-mounting kit .......15
EZClean compressor handrail-mounting kit ...15
EZClean compressor unit – 230 and 115 V AC...15

EZCLEAN | COMPRESSED AIR SUPPLY UNIT | OI/EZCLEAN-EN REV. A 3
1 Health and Safety
Document symbols
Symbols that appear in this document are explained below:
WARNING
This symbol in conjunction with the signal word 'WARNING'
indicates a potentially dangerous situation. Failure to
observe this safety information may result in death or
severe injury.
CAUTION
This symbol in conjunction with the signal word 'CAUTION'
indicates a potentially dangerous situation. Failure to
observe this safety information may result in minor or
moderate injury. The symbol may also be used for property
damage warnings.
NOTICE
This symbol indicates operator tips, particularly useful
information or important information about the product or
its further uses. The signal word ‘NOTICE’ does not indicate
a dangerous or harmful situation.
Safety precautions
Be sure to read, understand and follow the instructions
contained within this manual before and during use of the
equipment. Failure to do so could result in bodily harm or
damage to the equipment.
WARNING
Installation, operation, maintenance and servicing must be
performed:
• by suitably trained personnel only
• in accordance with the information provided in
this manual
• in accordance with relevant local regulations
Potential safety hazards
Electrical – high voltage
The EZClean air compressor unit requires a 230 or 115 V AC
mains supply to operate. A mains isolation switch must be
fitted in the supply to the unit.
Compressed air supply
The EZClean system generates compressed air up to a pressure
of 3.5 bar(g)/(50.7 psi(g)) maximum:
• do not use compressed air for any other purpose than that
for which it is provided
• never direct a stream of compressed air towards your
body or the body of any other person
• when handling/connecting compressed air lines:
– the correct safety procedures must be observed
– suitable PPE must be worn (goggles/gloves/overalls)
Weight
The EZClean air compressor unit weighs approximately 10.3 kg
(22.6 lb). The unit must be lifted only using appropriate lifting
equipment/personnel and in accordance with relevant health
and safety procedures and requirements.
Safety standards
This product has been designed to satisfy the requirements of
IEC61010-1:2010 3rd edition 'Safety Requirements for Electrical
Equipment for Measurement, Control and Laboratory Use' and
complies with US NEC 500, NIST and OSHA.
Product symbols
Symbols that appear on this product are shown below:
Functional earth (ground) terminal.
Direct current supply only.
This symbol, when noted on a product, indicates a
potential hazard which could cause serious personal
injury and/or death. The user should reference this
instruction manual for operation and/or safety
information.
This symbol identifies a risk of chemical harm and
indicates that only individuals qualified and trained to
work with chemicals should handle chemicals or
perform maintenance on chemical delivery systems
associated with the equipment.
This symbol indicates the need for protective eye
wear.
This symbol indicates the need for protective hand
wear.
Recycle separately from general waste under the
WEEE directive.

4EZCLEAN | COMPRESSED AIR SUPPLY UNIT | OI/EZCLEAN-EN REV. A
…1 Health and Safety
Product recycling and disposal (Europe only)
ABB is committed to ensuring that the risk of any
environmental damage or pollution caused by any of
its products is minimized as far as possible.
The European Waste Electrical and Electronic
Equipment (WEEE) Directive that initially came into
force on August 13 2005 aims to reduce the waste
arising from electrical and electronic equipment; and
improve the environmental performance of all those
involved in the life cycle of electrical and electronic
equipment. In conformity with European local and
national regulations, electrical equipment marked
with the above symbol may not be disposed of in
European public disposal systems after 12 August
2005.
NOTICE
For return for recycling, please contact the equipment
manufacturer or supplier for instructions on how to return
end-of-life equipment for proper disposal.
Restriction of Hazardous Substances (RoHS)
ABB, Process Automation, Measurement & Analytics,
UK, fully supports the objectives of the RoHS II
directive. All in-scope products placed on the market
by PAMA UK on and following the 22nd of July 2017, will
be compliant to the RoHS directive, 2011/65/EU.

EZCLEAN | COMPRESSED AIR SUPPLY UNIT | OI/EZCLEAN-EN REV. A 5
2 System overview
EZClean components are shown in Figure 1 shows the EZClean compo:
A
BC
D
E
G
F
IH
J
I
J
K
L
OM
Figure 1 EZClean components
Table 1 EZClean component descriptions
Item Description Item Description
ACompressor motor H
BCompressor head I
CAir muffler/filter J
DAir out – to sensor KAir intake (including dust filter)
EPressure relief valve LInstrument label
FMains supply voltage connector MDoor locks
G

6EZCLEAN | COMPRESSED AIR SUPPLY UNIT | OI/EZCLEAN-EN REV. A
3 Installation
WARNING
Unit weight 10.3 kg (22.6 lb). Mount in accordance with
relevant safety requirements using suitable equipment and
personnel.
Wall-mounting
This procedure is for wall-mounting using the four plastic wall-
mounting lugs and M6 screws/washers (supplied). The lugs can
be attached to the unit in the vertical or horizontal plane. When
choosing the mounting location, leave sufficient space in front
of the unit to open the door fully (280 mm [11.0 in]).
Dimensions in mm (in)
330
(13.0)
395
(15.5)
205
(8.1)*
381
(15.0)
262
(10.3)
420
(16.5)
440
(17.3)
196
(7.7)
*Add 280 (11.0) when door open
Figure 2 Wall-mounting
Referring to Figure 2:
1 Fit the four mounting lugs Ato the compressor unit Bin
the required plane and secure using the M6 screws/
washers C.
2 Mark appropriate mounting lug screw hole locations on the
wall and drill suitably sized holes to accommodate the
mounting location disks Dand fixings E(not supplied).
NOTICE
Ensure the keyhole slots in location disks Dare aligned
correctly.
3 Mount the compressor unit to the wall.

EZCLEAN | COMPRESSED AIR SUPPLY UNIT | OI/EZCLEAN-EN REV. A 7
Handrail/wall-mounting
This procedure is for handrail/wall-mounting using the optional
compressor unit handrail-mounting kit. When choosing the
mounting location, leave sufficient space in front of the
enclosure to open the door fully (>485 mm [>19.1 in]) .
NOTICE
Optional compressor mounting extension plates (Din
Figure 3 [2 supplied with handrail mounting kit]) can be
attached to handrail mounting plates if required.
Dimensions in mm (in)
*
*
*
*
330
(13.0)
395
(15.5)
205
(8.1)**
50 (1.9) U-bolt / 210 (8.3) + 25 (1.0)
42 (1.6) U-bolt / 210 (8.3) + 21 (0.8)
420
(16.5)
385
(10.1)
262
(10.3) 170
(6.70)
195
(7.67)
486
(19.1)
70 (2.75)
Figure 3 Handrail-mounting
Referring to Figure 3:
1 Fit the four handrail mounting plates Ato the compressor
unit Bin the required plane and secure each plate with one
M6 screw C(supplied).
If optional extension mounting plates Dare required,
attach to the handrail mounting plate(s) in the required
plane using two M6 bolts/washers/nuts (supplied) per plate.
2 Position the compressor unit Bon the handrail and secure
using the U-bolts Eand M8 nuts/washers F(supplied).
*Mounting plates A, U-bolts Eand extension plates Dcan be fitted horizontally or vertically in each corner of the enclosure.
Arrangements above shown for example only.
**485 (19.1) with door open

8EZCLEAN | COMPRESSED AIR SUPPLY UNIT | OI/EZCLEAN-EN REV. A
…3 Installation
Pole-mounting
This procedure is for pole-mounting using the optional pole-
mounting kit.
When choosing the mounting location, leave sufficient space in
front of the unit to open the door fully (280 mm [11.0 in]).
Dimensions in mm (in)
395
(15.5)
205
(8.1)
330
(13.0)
50 (1.9) U-bolt
205 (8.1) + 25 (1.0)
42 (1.6) U-bolt
205 (8.1) + 21 (0.8)
420
(16.5)
*Add 280 (11.0) when door open
Figure 4 Pole-mounting
Referring to Figure 4:
1 Fit the pole mounting plate Ato the compressor unit Band
secure using the M6 screws C(supplied).
2 Position the compressor unit Bon the pole and secure
using the U-bolt Dand M8 nuts/washers E(supplied).
NOTICE
It is not usually necessary to fit a second pole mounting
plate (and U-bolt) to the bottom of the enclosure but, if
necessary, an additional kit is required.

EZCLEAN | COMPRESSED AIR SUPPLY UNIT | OI/EZCLEAN-EN REV. A 9
4 Connections
Pneumatic connections
WARNING
The EZClean system develops compressed air up to a
pressure of 3.5 bar(g)/(50.7 psi(g)) maximum (when outlet
blocked [zero flow]).
• do not use compressed air for any other purpose
than that for which it is provided
• never direct a stream of compressed air towards
your body or the body of any other person
• when handling/connecting compressed air lines:
the correct safety procedures must be observed
suitable PPE must be worn (goggles/gloves/
overalls)
Connect the tubing to compressed air unit
Referring to Figure 5:
1 Connect one end of the 6 mm OD nylon tubing Ato
bulkhead push-fit connector B.
Figure 5 Connecting 6 mm OD nylon tubing to the compressed
air unit
2 Proceed to:
• "Connect the tubing to the ABB compressed air adaptor"
to connect 6 mm OD nylon tubing to ABB compressed air
adaptor
Connect the tubing to the ABB compressed air adaptor
Referring to Figure 6:
1 Refer to the sensor accessories instructions for details on
fitting the compressed air to the probe.
2 Connect the free end of 6 mm OD nylon tubing A
connector Bon the compressed air adaptor C:
WARNING
Typical pressure and flow rate 1.38 bar(g) (20 psi(g))/
@ 14.16 L/min (0.5 scfm), set to perform every
4 hours.
Figure 6 Connecting 6 mm OD nylon tubing to the ABB
compressed air adaptor
3 Proceed to "Electrical connections" on page 10 to make
electrical connections.

10 EZCLEAN | COMPRESSED AIR SUPPLY UNIT | OI/EZCLEAN-EN REV. A
…4 Connections
Electrical connections
Relay connections
(compressor unit to AWT420 transmitter)
WARNING
• Isolate the compressed air unit and AWT420
transmitter from the mains power supply before
making electrical connections.
• Ensure all cable runs are safe and do not present a
trip hazard when routing/securing.
Referring to Figure 1:
1 Release the two door locks Qand open the compressed air
unit door.
Referring to Figure 8:
2 Loosen the M20 cable gland entry on the base of the
compressed air unit and pass one end of the connection
cable through. Pass the other end of the cable through the
required cable gland entry on the transmitter refer to the
transmitter Operating Instruction (OI/AWT420-EN) for gland
entry options.
3 Make connections between the compressed air unit and
transmitter.
2 3 4 5 6 7 8 1 2 3 4 5 6 7 81
N/O
COM
L1L2
Compressed air unit
M20 cable gland entry
(Mains relay cable)
To relay terminals on transmitter
(assign terminal ID at Input/Output/
Relays parameter
See OI/AWT420-EN
AWT420 transmitter
To L2 connection on
compressed air unit
To L1 connection on
compressed air unit
Figure 7 Relay connections – compressed air unit to AWT420
transmitter
4 Tighten the cable glands on the compressed air unit and
transmitter.
5 Proceed to "Mains voltage supply" to make the mains voltage
supply connection to the compressed air unit.
Mains voltage supply
(230 or 115 V AC)
WARNING
• Isolate the compressed air unit and AWT420
transmitter from the mains power supply before
making electrical connections.
• Ensure the voltage supply matches the supply
voltage specified on the instrument label Pfitted
within the enclosure before making connections –
see Figure 1 on page 5.
• Ensure all cable runs are safe and do not present a
trip hazard when routing/securing.
Referring to Figure 8:
1 Loosen the M20 cable gland entry on the base of the
compressed air unit and pass the free end of the 3-core
mains supply cable through.
2 Make mains power supply connections to the compressed air
unit neutral/earth/live terminals.
3 Tighten the M20 mains supply voltage cable gland.
4 Close and lock the compressed air unit door – refer to Figure
1 on page 5.
5 Proceed to "Configuration" on page 11 to configure the
cleaning schedule.
NEL
2 A antisurge fuse
(beneath cover)
M20 cable gland
entry (230/115 V AC
mains supply cable)
Live
Neutral
Earth
Figure 8 Mains supply voltage 230 or 115 V AC connections

EZCLEAN | COMPRESSED AIR SUPPLY UNIT | OI/EZCLEAN-EN REV. A 11
5 Configuration
NOTICE
• Schedule automatic cleans for configured probe(s)
only.
• Clean parameters are enabled only when the Clean
Interval is set (is not Off) – see "Configuration"
on page 11.
• Full software details are detailed in the transmitter
Operating instruction
(OI/AWT420-EN).
1 Ensure the probe to be cleaned is connected to the
transmitter.
2 Ensure pneumatic connections are made between the
EZClean compressed air unit and an ABB compressed air
adaptor to be fitted on the sensor.
3 Ensure electrical connections are made between the EZClean
compressed air unit and the AWT420 transmitter – see
"Electrical connections" on page 10.
4 At the AWT420 transmitter, press the key to display the
Operator Page menu, then select Enter Conguration to
display the Access Level page.
Use the key to select the Advanced menu item and press
the key (below the Select prompt) to access Advanced
level menus.
Use the / keys to scroll to the Input/Output menu
and press the key to enter the level. Scroll to the Relay
menu using the / keys.
Configure Relay parameters for the associated probe as
follows:
– Set: Type to Output
– Set: Source to Sx Clean (where xcorresponds to the
– sensor position [1 to 2] at the EZLink connector)
5 Exit the Input/Output menu and use the / keys to
scroll to the Sensor Setup menu:
Menu
Sensor Setup
Exit Select
Press the key – the Sensor Setup page is displayed:
123
Sensor Setup
S1 :DO
Salinity Units
Pressure Units
Back Select
If more than 1 sensor is connected, select the required sensor
S1(to 2) :DO (to be cleaned) and press the key (below the
Select prompt).
The sensor S1(to 2) :DO menu page is displayed – see "Sensor
Setup" on page 12:
123
S1(to 2) :DO
Tag
PV Type
Units
Range High
Range Low
Filter Type
Back Select
Scroll to the Clean Interval menu and set the required interval
between cleans.
123
Back Select
S1(to 2) :DO
Clean Interval
Clean Type
Clean On Time
Clean Off Time
Number of Pulses
Recovery Time
Set the required clean parameters (Clean Type / Clean On
Time / Clean Off Time* / Number of Pulses* / Recovery
Time / Clean Duration / Clean Output) for the connected
probe.
*Enabled only if Clean Type is set to Pulsed.
When all required clean parameters are set, press the key
repeatedly to exit the Sensor Setup level and return to the
Operator Page.
The configured clean commences at the interval set after
this configuration is saved and repeats until re-configured or
stopped.

12 EZCLEAN | COMPRESSED AIR SUPPLY UNIT | OI/EZCLEAN-EN REV. A
…5 Configuration
Sensor Setup
Menu
Sensor Setup
Exit Select
Used to set the tag, measurement units, operational range and clean functions and to
compensate for salinity and barometric pressure.
Menu Comment Default
 Select the ID of the optical dissolved oxygen probe to be cleaned and scroll to the
Clean Interval menu to configure the cleaning routine.
Tag
PV Type
Units
Range High
Range Low
Filter Type
These parameters are not used to configure cleaning – refer to the probe Operating

Clean Interval Set the interval between cleans:

Off
Clean Type * Set the clean type: Continuous / Pulsed Continuous
Clean On Time *  
Clean Off Time * / **  
Number of Pulses * / **  
Recovery Time * Set the time delay between the completion of cleaning and the display of a new


Clean Duration * Displays the total duration of the clean:
Clean Type set to Continuous = Clean on Time + Recovery Time
Clean Type set to Pulsed = (Clean on Time + Clean Off Time)
x Number of Pulses + Recovery Time
Clean Output * 

 
No Assignment
Salinity Correction
Barometric Pressure
Restore Defaults
These parameters are not used to configure cleaning – refer to the probe Operating

Salinity Units
Pressure Units
* Displayed only if Clean Interval is NOT set to Off
** Displayed only if Clean Type is set to Pulsed

EZCLEAN | COMPRESSED AIR SUPPLY UNIT | OI/EZCLEAN-EN REV. A 13
6 Maintenance
Annual maintenance
1 Ensure compressed air supply unit mountings are secure.
2 Ensure push-fit couplings and 6 mm tubing are in serviceable
condition – see "Pneumatic connections" on page 9 .
3 Ensure the air intake is clean – see "System overview" on
page 5, item K.
4 Ensure the air muffler/filter is clean and free of clogged
pores – see "System overview" on page 5, item C.
To clean this, remove from the compressor head and blow
oil-free compressed air through it from the reverse side.
If the unit operates in a dusty environment, additional
periodic cleaning may be required. Use only a clean, dry cloth.

14 EZCLEAN | COMPRESSED AIR SUPPLY UNIT | OI/EZCLEAN-EN REV. A
7 Specifications
*
Compressed air unit
Dimensions*
Height: 395 mm (15.5 in)
Width: 330 mm (13.0 in)
Depth: 205 mm (8.1 in)
Enclosure material
Polypropylene
Pump unit
Power
90 W
Pressure relief valve
Set to vent to atmosphere if pressure exceeds
1.38 bar(g)/(20 psi(g))
Pneumatic pressure/flow rate
Maximum pressure:
• outlet closed: 3.5 bar(g)/(50.7 psi(g))
• outlet open: 2.0 bar(g)/(30 psi(g))
Typical operating pressure and flow rate 1.38 bar(g)/
(20 psi(g))/@ 14.16 L/min (0.5 scfm), set to perform every
4 hours
TORR BAR
0200 400 600 760 0.5 1.0 1.5 2.0
25
20
15
10
5
30
010 20
30 1020
0.1
0.3
0.4
0.5
0.6
0.7
0.8
0.9
0.2
INS HG PSIG
LITRES/M
SCFM
Figure 9 Pump unit – pneumatic pressure/flow rate
Environmental ratings
Storage temperature
-20 to 50 °C (-4 to 122 °F)
Operating temperature
-20 to 50 °C (-4 to 122 °F)
Power requirements
Mains power supply
230 or 115 V AC, 90 W
Internal fuse
2 A, antisurge
Cable entries
Mains voltage supply cable
M20 cable gland
Relay cable
M20 cable gland
Pneumatic entry
Bulkhead push-fit connector for 6 mm nylon tubing
Compliance
CE
UKCA

EZCLEAN | COMPRESSED AIR SUPPLY UNIT | OI/EZCLEAN-EN REV. A 15
8 Spares and accessories
Spares
EZClean compressor maintenance kit
Part number Description
 Maintenance kit, comprising:


– replacement air muffler/filter
– fuse
Air cleaning tubing kit
Part number Description
 Tubing and connector comprising:


EZClean compressor pneumatic fittings kit
Part number Description
 Compressor pneumatic fittings kit
Accessories
EZClean compressor pole-mounting kit
Part number Description
 Compressor pole-mounting kit, includes
compressor pole mounting plate, U-bolts, nuts
and washers
EZClean compressor handrail-mounting kit
Part number Description
 Compressor handrail-mounting kit, includes

plates, U-bolts, nuts and washers
EZClean compressor unit – 230 and 115 V AC
Part number Description
 
 

OI/EZCLEAN–EN Rev. A 05.2022
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