TESTO 550i User manual

testo 550i - digital manifold
Instruction manual

Contents
Contents
1About this document ...........................................................................5
2Safety and disposal..............................................................................5
3Product-specific approvals .................................................................5
4Product-specific information...............................................................6
5Use.........................................................................................................6
6Product description .............................................................................7
7First steps .............................................................................................8
7.1 Inserting (rechargeable) batteries .......................................................................8
7.2 Switching the instrument on and off ....................................................................8
7.2.1 Switching the instrument on .......................................................................................8
7.2.2 Switching the instrument off .......................................................................................8
7.3 LED status..........................................................................................................8
7.4 Bluetooth®...........................................................................................................9
7.4.1 Compatible probes.....................................................................................................9
7.4.2 Establishing a connection...........................................................................................9
7.4.3 Switching on/off..........................................................................................................9
8Using the product...............................................................................11
8.1 Preparing for measurement ..............................................................................11
8.1.1 Operating the valve positioners ................................................................................11
8.1.2 Measuring mode ......................................................................................................12
8.2 App – Bedienoberfläche ...................................................................................12
8.3 Main menu........................................................................................................14
8.4 Measurement programs....................................................................................15
8.4.1 Basic view................................................................................................................15
8.4.1.1 Graphic view............................................................................................................................16
8.4.1.2 Table view ...............................................................................................................................17
8.4.2 Refrigeration ............................................................................................................17
8.4.3 Target superheat......................................................................................................21
8.4.4 Pressure leak testing................................................................................................23
8.4.5 Evacuation ...............................................................................................................25
8.5 Customer..........................................................................................................27
8.5.1 Creating and editing a customer...............................................................................27
8.5.2 Creating and editing measuring sites........................................................................28
8.6 Memory ............................................................................................................29
8.6.1 Searching for and deleting measurement results ......................................................30
8.7 Sensors ............................................................................................................30
8.7.1 Information...............................................................................................................31
8.7.2 Settings....................................................................................................................31

Contents
8.8 Settings ............................................................................................................ 32
8.8.1 Language ................................................................................................................ 32
8.8.2 Measurement settings ............................................................................................. 32
8.8.3 Company details...................................................................................................... 33
8.8.4 Privacy settings ....................................................................................................... 33
8.9 Help and Information ........................................................................................ 34
8.9.1 Instrument information ............................................................................................. 34
8.9.2 Tutorial .................................................................................................................... 34
8.9.3 Exclusion of liability ................................................................................................. 34
8.10 testo DataControl archiving software ................................................................35
8.10.1 System requirements............................................................................................... 35
8.10.1.1 Operating system....................................................................................................................35
8.10.1.2 PC ...........................................................................................................................................35
8.10.2 Procedure................................................................................................................ 35
9Maintenance....................................................................................... 38
9.1 Calibration ........................................................................................................ 38
9.2 Cleaning the instrument.................................................................................... 38
9.3 Keeping connections clean............................................................................... 38
9.4 Removing oil residues ......................................................................................38
9.5 Ensuring measuring accuracy........................................................................... 38
9.6 Changing batteries/rechargeable batteries ....................................................... 38
9.7 Cleaning the vacuum probe ..............................................................................39
10 Technical data.................................................................................... 40

1 About this document
5
1About this document
•The instruction manual is an integral part of the instrument.
•Keep this documentation on hand so that you can refer to it when necessary.
•Please read this instruction manual carefully and familiarize yourself with the
product before putting it to use.
•Hand this instruction manual on to any subsequent users of the product.
•Pay particular attention to the safety instructions and warning advice in order
to prevent injury and damage to the product.
Symbols and writing standards
Display Explanation
Note: basic or further information
Warning advice,
risk level according to the signal word:
Warning!
Serious physical injury may occur.
Caution!
Minor physical injury or damage to the equipment may
occur.
> Take the specified precautionary measures.
1
2
…
Action: several steps, the sequence must be followed
-
Result of an action

Requirement
>
Action
Menu
Elements of the instrument, the instrument display or the
program interface.
[OK]
Control keys of the instrument or buttons of the program
interface.
2Safety and disposal
Take the testo information document into account (accompanies the product).
3Product-specific approvals
Please find the current country approvals in the attached Approval and
Certification document.

4Product-specific information
6
4Product-specific information
•The measuring instrument being dropped or any other comparable
mechanical stress may cause breakage of the pipe pieces in the refrigerant
hoses. The valve positioners may also suffer damage, causing further
damage inside the measuring instrument that is not necessarily visible
externally. Therefore, always replace the refrigerant hoses with new ones
after the measuring instrument is dropped or after any comparable
mechanical stress. For your own safety, you should return the measuring
instrument to the Testo Customer Service for technical inspection.
•Electrostatic charging may destroy the instrument. Integrate all the
components (system, manifold's valve block, refrigerant bottle, etc.) into the
potential bonding (earthing). Please see the safety instructions for the
system and the refrigerant used.
•Refrigerant gases can harm the environment. Please note the applicable
environmental regulations.
5Use
testo 550i is a fully digital, highly reliable app-based manifold for digitally adept
AC/R technicians. Equipped with a 2-way valve block, the testo 550i helps AC/R
technicians to save time with quick and easy measurements, results and digital
documentation. In addition, this compact and robust instrument offers unlimited
flexibility thanks to its compatibility with many different wireless probes.

6 Product description
7
6Product description
1
Hinged suspension hook (on rear)
2
Battery compartment and mini
USB connection in battery
compartment (on rear)
3
Sight glass for refrigerant flow
4
On/off button
5
LED display
6
2 x valve positioner
7
3 x hose bracket for refrigerant
hoses
8
3 x connections 7/16" UNF, brass
Left/right: Low/high pressure for
refrigerant hoses with quick
release screw fitting; passage for
valve positioner lockable Centre:
e.g. for refrigerant bottles, with
cap Refrigerant hoses with quick-
release fitting; passage can be
closed with valve positioner.

7First steps
8
7First steps
7.1 Inserting (rechargeable) batteries
1
Unfold the suspension hook and open the battery compartment (clip
lock).
2
Insert the batteries (in scope of delivery) or rechargeable batteries (3 x
AAA/micro/R03) in the battery compartment. Observe the polarity!
3
Close the battery compartment.

After insertion of the batteries, the instrument switches on
automatically and goes into the settings menu.
When not in use for a long period: Take out the (rechargeable)
batteries.
7.2 Switching the instrument on and off
7.2.1 Switching the instrument on
1
Press the on/off button.

The LED indicator flashes. The instrument is on.
7.2.2 Switching the instrument off
1
Press the on/off switch >2 s.

The LED indicator turns off. The instrument is switched off.
7.3 LED status
LED status Description
Lit up green
Instrument is connected to a mobile
device and has sufficient power.
Flashing orange
Search for a Bluetooth®connection
begins.
Flashing red
Battery is weak or there is a
malfunction.

7 First steps
9
7.4 Bluetooth®
The testo 550i features the option of connecting to the testo Smart App. The
App enables connection of other Bluetooth®probes needed for the
measurement.
7.4.1 Compatible probes
Order no. Designation
0560 2115 02
testo 115i - clamp thermometer operated by
smartphone and testo Smart App
0560 1805
testo 805i - infrared thermometer operated by
smartphone and testo Smart App
0560 2605 02
testo 605i - thermohygrometer operated by smartphone
and testo Smart App
0560 1405
testo 405i - thermal anemometer operated by
smartphone and testo Smart App
0560 1410 testo 410i - vane anemometer operated by smartphone
and testo Smart App
0560 1510
testo 510i - differential pressure measuring instrument
operated by smartphone and testo Smart App
0560 2549 02
testo 549i - high-pressure measuring instrument
operated by smartphone and testo Smart App
0564 2552
testo 552i - vacuum Smart Probe and testo Smart App
0560 1905
testo 905i - temperature probe with smartphone
operation and testo Smart App
7.4.2 Establishing a connection
To establish a connection via Bluetooth®, you need a tablet or
smartphone with the testo Smart App installed on it.
You can get the App for iOS instruments in the App Store or for Android
instruments in the Play Store.
Compatibility:
Requires iOS 12.0 or newer/Android 6.0 or newer,
requires Bluetooth®4.0.
7.4.3 Switching on/off

testo 550i is switched on.

Bluetooth®is activated on the tablet or smartphone.

7First steps
10
1
Open the App.

The LED indicator flashes green as soon as the testo 550i is
connected to the tablet or smartphone via Bluetooth®.

8 Using the product
11
8Using the product
8.1 Preparing for measurement
8.1.1 Operating the valve positioners
WARNING
Risk of injury caused by refrigerant that is at
high pressure, hot, cold, or
poisonous!
>
Wear protective goggles and safety gloves.
>
Before applying pressure to the measuring instrument: Always fasten the
measuring instrument on the suspension hook to prevent it from falling down
(danger of breakage)
>
Before each measurement, check the refrigerant hoses are intact and
connected properly. Do not use any tools to connect the hoses; only tighten
hoses hand-tight (max. torque 5.0Nm/3.7ft*lb).
>
Comply with the permissible measuring range (-1 to 60 bar/-14.7 to 870
psi).
Pay particular attention to this in systems with R744 refrigerant, since these
are frequently operated with higher pressures.
The digital manifold behaves like a conventional three-way manifold with regard
to the refrigerant path: The passages are opened by opening the valves. The
applied pressure is measured with the valves closed and the valves opened.
>
Open the valve: Turn valve positioner counterclockwise.
>
Close the valve: Turn valve positioner clockwise.
WARNING
Valve positioner tightened too tightly.
•Damage to the PTFE seal (1).
•Mechanical deformation of the
valve piston (2) leading to the
PTFE seal (1) falling out.
•Damage to the thread of the
threaded spindle (3) and the valve
screw (4).
Broken valve knob (5).
Only tighten the valve positioner
hand-tight. Do not use any tools to
tighten the valve positioners.

8Using the product
12
8.1.2 Measuring mode
testo 550i automatically detects the pressure difference between the low-
pressure and high-pressure sides. If the measured pressure on the low pressure
side is 1 bar higher than on the high pressure side, a dialogue appears and the
display can be changed accordingly. If “yes” is selected, the low pressure moves
from left to right and the high pressure moves from right to left. This mode is
especially suitable for air conditioners that cool and heat.
8.2 App – Bedienoberfläche
1
Open main menu
2
Display of the measurement period
3
Display of calculated measurement results
4
Reading for each probe
5
Can be controlled with different function keys
6
Instrument status bar
7
Configuration
8
Edit reading display

8 Using the product
13

8Using the product
14
Further symbols on the user interface (without numbering)
One level back
Exit view
Share report
Search
Favorite
Delete
Further information
Display report
Multiple selection
8.3 Main menu
The Main menu can be accessed via the icon at top left. To exit the main
menu, select a menu or right-click on the guided menus. The last screen
displayed is shown.
Measure
Customer
Memory
Sensors
Settings
Help and Information

8 Using the product
15
Additional icons on the testo 550i:
One level back
Delete
Exit view
Further information
Share measurement data/reports
Display report
Search
Edit
Favorite
8.4 Measurement programs
The testo 550i has permanently installed measurement programs. These enable
the user to carry out convenient configuration and implementation of specific
measuring tasks.
The testo 550i offers the following Measurement programs:
Basic view
Volume flow – duct (irrelevant
for testo 550i)
Volume flow – outlet
(irrelevant for testo 550i)
Differential temperature (ΔT)
(irrelevant for testo 550i)
Differential pressure (ΔT)
(irrelevant for testo 550i)
Refrigeration
Target superheat
Cooling and heating output
(irrelevant for testo 550i)
Pressure leak test
Evacuation
8.4.1 Basic view
In the Basic view application menu, the current measuring values can be read,
recorded and saved. The Basic view is particularly suitable for fast,
uncomplicated measurements without the specific requirements of a standard-
compliant measurement.
All Bluetooth®probes compatible with the testo Smart App are displayed in the
Basic view.

8Using the product
16
In all application menus, apart from the volume flow measurement, there are
three different screens for the measurement - Live (or also Basic view), Graphic
and Table.
8.4.1.1 Graphic view
In the Graphic view, the values for a maximum 4 channels can be displayed
simultaneously in a chronological trend graph. All measured parameters can be
displayed in the Graphic view via the channel selection (click on one of the four
selection fields). Once a measurement parameter has been selected, the value
is updated automatically.
The Zoom touch function allows individual parts of the graphic to be viewed in
more detail or time progressions to be displayed compactly.
1
Open the main
menu
2
Change of display
3
Reading for selected
channel
4
Measurement
parameter and
measurement unit
5
Graphic with selected
channels and 4 Y-axes
6
Status bar
7
Open the
configuration menu
8
Selection of other
channels
9
Time axis
10
New/Start/Stop/Save
button
If multiple probes are connected, please refer to the color the probe is
associated with. Y axis may not align with other probe measurements.

8 Using the product
17
8.4.1.2 Table view
1
Open the main
menu
2
Change of display
3
Column with date and
time
4
Arrow keys to go
directly to the end of
the table
5
Status bar
6
Open the
configuration menu
7
Probe ID -
measurement unit
8
Measuring values
9
New/Start/Stop/Save
button
8.4.2 Refrigeration
The Refrigeration application is used to determine the following system
measuring values:
•Low-pressure side: Evaporation pressure, refrigerant evaporation
temperature to/Ev (T evap.)
•Evaporation pressure: Measured temperature toh/T1
•Evaporation pressure: Superheating Δtoh/SH
•High-pressure side: Condensation pressure, refrigerant condensation
temperature tc/Co (T condens.)
•Condensation pressure: Measured temperature tcu/T2
•Condensation pressure: Subcooling Δtcu/SC
The testo 115i clamp thermometer is used for the measurement.
An NTC temperature sensor (accessory) must be connected for
measuring the pipe temperature and for automatic calculation of
superheating and subcooling. Testo Smart Probes (e.g. testo 115i) can
be used.

8Using the product
18
Before each measurement, check that the refrigerant hoses are in
perfect condition.
Before each measurement, zero the pressure sensors. All connections
must be pressureless (ambient pressure). Press the button [▲] (P=O)
for 2 seconds to zero the sensors.
WARNING
The measuring instrument being dropped or any other comparable mechanical
stress may cause breakage of the pipe pieces in the refrigerant hoses. The
valve positioners may also suffer damage, causing further damage inside the
measuring instrument that is not necessarily visible externally!
> For your own safety, return the measuring instrument to the Testo Customer
Service for technical inspection.
> Therefore, always replace the refrigerant hoses with new ones after the
measuring instrument is dropped or after any comparable mechanical stress.
1
Click on Measure.
2
Click on Refrigeration.

The Refrigeration measurement menu opens.
3
Click on .

Configuration menu opens.

8 Using the product
19
4
Make the required settings.
5
Click on Apply Configuration.
6
Set refrigerant.

8Using the product
20
You have the option of setting up favorite refrigerants in the App. These
then appear at the beginning of the refrigerant list.
To do this, click on the asterisk next to the refrigerant in the refrigerant
list (App).

The newly set refrigerant is displayed in the refrigerant list.
7
Click on Start.

The measurement starts.

Values currently being measured are
displayed.

Measured values can be saved or a new measurement can be started.
With zeotropic refrigerants, the evaporation temperature to/Ev is
displayed after complete evaporation/the condensation temperature
tc/Co is displayed after complete condensation.
The measured temperature must be assigned to the superheating or
subcooling side (toh <--> tcu
). Dependent on this assignment, the display
will show toh/T1 resp. Δtoh/SH or tcu/T2 resp. Δtcu/SC, depending on the
selected display.
Reading and display illumination flash:
•1 bar/14.5 psi before reaching critical refrigerant pressure