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550i
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User manual
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Testo Instruments 550i User manual

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Page 1
testo 550i - digital manifold
Instruction manual
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Page 2
Contents
1 2 3 4 5 6 7
8
Contents
About this document ........................................................................... 5
Safety and disposal .............................................................................. 5
Product-specific approvals ................................................................. 5
Product-specific information............................................................... 6
Use ......................................................................................................... 6
Product description ............................................................................. 7
First 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
Using 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
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Contents
9
10
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
Maintenance ....................................................................................... 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
Technical data .................................................................................... 40
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1
Note: basic or further information
Warning advice,
Warning! Caution!
occur.
> Take the specified precautionary measures.
1
…
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.
2
3

1 About this document

About 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
risk level according to the signal word:
Serious physical injury may occur.
Minor physical injury or damage to the equipment may
2

Safety and disposal

Take the testo information document into account (accompanies the product).

Product-specific approvals

Please find the current country approvals in the attached Approval and Certification document.
5
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4
5

4 Product-specific information

Product-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.

Use

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.
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6
1
Hinged suspension hook (on rear)
2
Battery compartment and mini
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
8
3 x connections 7/16" UNF, brass
closed with valve positioner.
Product description

6 Product description

hoses
USB connection in battery
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 quick­release fitting; passage can be
7
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7
7.1
1
Unfold the suspension hook and open the battery compartment (clip
2
Insert the batteries (in scope of delivery) or rechargeable batteries (3 x
3
Close the battery compartment.
7.2
7.2.1
1
Press the on/off button.
7.2.2
1
Press the on/off switch >2 s.
7.3
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

First steps

Inserting (rechargeable) batteries

lock).
AAA/micro/R03) in the battery compartment. Observe the polarity!
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.

Switching the instrument on and off

Switching the instrument on

The LED indicator flashes. The instrument is on.

Switching the instrument off

The LED indicator turns off. The instrument is switched off.

LED status

LED status Description
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8
Page 8
7.4
7.4.1
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
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
You can get the App for iOS instruments in the App Store or for Android
7.4.3
testo 550i is switched on.
Bluetooth® is activated on the tablet or smartphone.
7 First steps

Bluetooth®

The testo 550i features the option of connecting to the testo Smart App. The App enables connection of other Bluetooth measurement.

Compatible probes

Order no. Designation
0560 1410 testo 410i - vane anemometer operated by smartphone
®
probes needed for the

Establishing a connection

®
To establish a connection via Bluetooth smartphone with the testo Smart App installed on it.
, you need a tablet or
instruments in the Play Store.
Compatibility:
Requires iOS 12.0 or newer/Android 6.0 or newer, requires Bluetooth
®
4.0.

Switching on/off

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7 First steps
1
Open the App.
The LED indicator flashes green as soon as the testo 550i is connected to the tablet or smartphone via Bluetooth
®
.
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8
8.1
8.1.1
Risk of injury caused by refrigerant that is at poisonous!
>
>
measuring instrument on the suspension hook to prevent it from falling down
>
>
psi).
>
Open the valve: Turn valve positioner counterclockwise.
>
Close the valve: Turn valve positioner clockwise.
tighten the valve positioners.

8 Using the product

Using the product

Preparing for measurement

Operating the valve positioners

WARNING
high pressure, hot, cold, or
Wear protective goggles and safety gloves.
Before applying pressure to the measuring instrument: Always fasten the
(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
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.
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
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8 Using the product
8.1.2
8.2
1 Open main menu
2
Display of the measurement period
3
4 Reading for each probe
5 Can be controlled with different function keys
6
7 Configuration
8 Edit reading display

Measuring mode

testo 550i automatically detects the pressure difference between the low­pressure 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.

App – Bedienoberfläche

Display of calculated measurement results
Instrument status bar
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8 Using the product
Search
Display report
8.3
Measure
Customer
Memory
Sensors
Settings
Help and Information
Further symbols on the user interface (without numbering)
One level back
Exit view
Share report
Favorite
Delete
Further information
Multiple selection

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.
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One level back
Delete
Exit view
Further information
Share measurement data/reports
Display report
Search
Edit Favorite
8.4

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
8 Using the product
Additional icons on the testo 550i:

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
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 standard­compliant measurement.
All Bluetooth® probes compatible with the testo Smart App are displayed in the
Basic view.
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8 Using the product
8.4.1.1
1
menu
2
Change of display
3
Reading for selected channel
4
Measurement
measurement unit
5
Graphic with selected channels and 4 Y-axes
6
Status bar
7
configuration menu
8
Selection of other channels
9
Time axis
10
New/Start/Stop/Save
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.
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.
Open the main
parameter and
Open the
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.
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8.4.1.2
1
menu
2
Change of display
3
Column with date and time
4
Arrow keys to go
the table
5
Status bar
6
configuration menu
7
Probe ID ­measurement unit
8
Measuring values
9
New/Start/Stop/Save button
8.4.2
8 Using the product
Table view
Open the main
directly to the end of
Open the

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.
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8 Using the product
1 2
Click on Refrigeration.
3
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)
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.
for 2 seconds to zero the sensors.
WARNING
Click on Measure.
The Refrigeration measurement menu opens.
Click on .
Configuration menu opens.
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8 Using the product
4
Make the required settings.
5
Click on Apply Configuration.
6
Set refrigerant.
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8 Using the product
You have the option of setting up favorite refrigerants in the App. These
list (App).
7
Click on Start.
). Dependent on this assignment, the display
then appear at the beginning of the refrigerant list. To do this, click on the asterisk next to the refrigerant in the refrigerant
The newly set refrigerant is displayed in the refrigerant list.
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 (t will show toh/T1 resp. Δtoh/SH or tcu/T2 resp. Δtcu/SC, depending on the
<--> t
oh
cu
selected display.
Reading and display illumination flash:
• 1 bar/14.5 psi before reaching critical refrigerant pressure
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8 Using the product
• When max. permissible pressure of 60 bar (870 psi is exceeded).
8.4.3
If 605i Smart Probes are note connected, This can be manually set. It is
1 2

Click on Target superheat.

3
Target superheat
This feature allows the testo 550i manifold to calculate the target superheat in conjunction with the App and additional testo 605i Smart Probes. This application can only be used for split air conditioning systems/heat pumps with a fixed expansion valve. The two connected testo 605i Smart Probes determine the ODDB and RAWB values. As a result, the target superheat appears in the App.
recommended to use 605i Smart Probes for accurate measurements.
The following are used for the measurement:
• testo 115i (clamp thermometer)
• testo 605i
Before each measurement, check that the refrigerant hoses are in flawless condition.
Before each measurement, zero the pressure 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.
Click on Measure.
The Target superheat measurement menu opens.
Click on .
Configuration menu opens.
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8 Using the product
4
Make the required settings.
5
Click on Apply Configuration.
6
Set refrigerant.
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7
Click on Start.
8.4.4
actual pressure drop is displayed as delta P. If no temperature sensor is
1 2
Click on Pressure leak test.
3
8 Using the product
The newly set refrigerant is displayed in the refrigerant list.
The measurement starts.
Values currently being measured are displayed.
Measured values can be saved or a new measurement can be started.

Pressure leak testing

The temperature compensated tightness test can be used to check the leak tightness of systems. For this purpose both the system pressure and the ambient temperature are measured over a defined period of time.
For this purpose a temperature sensor to measure the ambient temperature may be connected (recommendation: Deactivate the surface compensation factor and use an NTC air probe or Bluetooth temperature Smart Probes) or Smart Probe for air temperature measurement. This provides information about the temperature­compensated differential pressure and the temperature at the beginning/end of the test. Due to the temperature compensation, the
connected, you may also perform the pressure leak test without temperature compensation.
Surface temperature probes (e.g. testo 115i) can also be used for the temperature-compensated pressure leak testing, but must not be used for measuring surface temperature. They must be positioned as far as possible to measure the air temperature.
The 550i, 550s or 557s manifold is used to perform the measurement.
Click on Measure.
®
The Pressure leak test measurement menu opens.
Click on .
Configuration menu opens.
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8 Using the product
4
Make the required settings.
5
Click on Apply Configuration.
6
Click on Start.
Start the measurement once pressure has been achieved. Once pressure has been reached, press start to enable the Pressure leak
test. This will begin the test and the clock.
The measurement starts.
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8 Using the product
8.4.5
1 2

Click on Evacuation.

3
Values currently being measured are displayed.
Measured values are saved. The values can be exported or a report can be created.
Evacuation
With the Evacuation application, foreign gases and moisture can be removed from the refrigeration circuit.
Click on Measure.
The Evacuation measurement menu opens.
Click on .
Configuration menu opens.
To have an accurate reading in microns, the testo 552i Smart Probe is recommended for this measurement. Please connect the smart probe to the app.
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8 Using the product
4
Make the required settings.
5
Click on Apply Configuration by setting the maximum decay target
7
Click on Start.
and evacuation target.
26
The measurement starts.
The graph will not begin until the refrigeration circuit reaches 1500 microns. The timer will run once start is pressed. Begin timing once evacuation target is reached.
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8 Using the product
8.5
8.5.1
1
2
3
Click on + New customer.
Values currently being measured are displayed.
Measured values can be saved or a new measurement can be started.

Customer

In the Customer menu, all customer and measuring site information can be created, edited and deleted. Fields marked with * are mandatory. Without any information in this field, no customers or measuring sites can be stored.

Creating and editing a customer

Click on .
Main menu opens
Click on Customer.
The Customer menu opens.
A new customer can be created.
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8 Using the product
4
Store all relevant customer data.
5
Click on Save.
8.5.2
1
2
3
Click on + New customer.
4
Click on the right tab Measuring point.
It is recommended to create customers before measurements. Customers can be added later within the memory of the testo Smart App (section 8.6)
28
The new customer was saved.

Creating and editing measuring sites

Click on .
Main menu opens
Click on Customer.
The Customer menu opens.
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8 Using the product
5
Click on + New measuring site.
6
Store all relevant measuring site information.
7
Click on right tab Parameters.
8
Select further parameters.
9
Click on Save.
8.6
A new measuring site can be created.
For the duct, outlet or duct with k-factor measuring sites, further parameter settings can be implemented.
The new measuring site has been saved.

Memory

In the Memory menu, you can call up all the measurements stored with the testo 550i, analyze them in detail and also create and save csv data and PDF reports. When clicking on a measurement, an overview of the measurement results is displayed.
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8.6.1
The Memory menu is open.
1
2
Enter the customer name or measuring site or date/time in the search
complete. Select the measurement and enter customer details. Refer to
1
2
Click on the required measurement.
3
4
Acknowledge the information.
8.7
8 Using the product
Searching for and deleting measurement
results
In the Memory menu, all stored measurements are sorted by date and time.
Click on .
Deleting
Search field with measurements opens.
field.
If a customer is not created before a measurement, user will be able to create a customer and measuring site after the measurement is
section 8.5.2.
The result is displayed.
Click on .
A check box is displayed in front of each measurement.
A tick is displayed in the respective box.
Click on .
Information window is displayed.
Selected measurements were deleted.

Sensors

All sensors used with the App can be found in the Sensors menu. There, you can view general information about currently connected probes as well as recently connected probes.
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8 Using the product
8.7.1
The App is connected to testo 550i.
1
2
3
Click on one of the displayed probes.
8.7.2
The probe is connected to the App.

Information

Information is stored for each probe.
Click on .
Main menu opens.
Click on Sensors.
The Sensors menu opens.
Information is displayed about the model, order number, serial number and firmware version.

Settings

Settings can also be made for each probe.
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8 Using the product
1
2
3
Click on one of the displayed probes.
4
Click on the Settings tab.
5
Click on one of the displayed probes.
8.8
8.8.1
1
2

Click on Language.

3
Click on the required language.
8.8.2
1
2
Click on Measurement settings.
Click on .
Main menu opens.
Click on Sensors.
The Sensors menu opens.
Settings appear that can be changed if necessary.

Settings

Language
Click on Settings.
The Settings menu opens.
32
A window with different languages opens.
The required language is set.

Measurement settings

Click on Settings.
The Settings menu opens.
A window with different basic settings for measurement opens.
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3
Click on the required settings and change if necessary.
4
8.8.3
1
2

Click on Company details.

3
Click on the required data and enter if necessary.
4
8.8.4
1
2
Click on Privacy settings.
3
Activate or deactivate the required settings.
4
8 Using the product
The required measurement settings are set.
Exit Measurement settings.
Company details
Click on Settings.
The Settings menu opens.
A window with company details opens.
The required measurement settings are set.
Exit Company details.

Privacy settings

Click on Settings.
The Settings menu opens.
A window with privacy settings opens.
The required settings are set.
Exit Privacy settings.
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8.9
8.9.1
1
2
Click on Instrument information.
>
Use the slider to activate or deactivate Update for connected
8.9.2
1
2

Click on Tutorial.

8.9.3
1
2
Click on Exclusion of liability.
8 Using the product

Help and Information

Under Help and Information, you will find information about the testo 550i, and the tutorial can be called up and implemented. This also where legal information can be found.

Instrument information

Click on Help and Information.
Automatic updates for instruments can be enabled or disabled.
The Help and Information menu opens.
The current App version, Google Analytics instance ID, refrigerant version and update are displayed for the connected instrument.
instruments.
Tutorial
Click on Help and Information.
The Help and Information menu opens.
34
The tutorial shows you the most important steps prior to commissioning.

Exclusion of liability

Click on Help and Information.
The Help and Information menu opens.
The data protection information and licence usage information is displayed.
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8.10
8.10.1
8.10.1.1
8.10.1.2
8.10.2
To transfer the data from the App to testo DataControl, both
1
Open testo Smart App on the smartphone or tablet.
8 Using the product

testo DataControl archiving software

The free testo DataControl measurement data management and analysis software enhances the functionality of the testo Smart App measuring instrument with lots of useful functions:
• Manage and archive customer data and measuring site information
• Read out, evaluate and archive measurement data
• Presenting readings in graphic form
• Create professional measurement reports from the existing measurement
data
• Conveniently add pictures and comments to measurement reports
• Data import from and data export to the measuring instrument

System requirements

Administrator rights are required for installation.
Operating system
The software can be run on the following operating systems:
• Windows
• Windows
• Windows® 10
The computer must meet the requirements of the operating system in each case. The following requirements must also be met:
• Interface USB 2 or higher
• DualCore processor with minimum 1 GHz
• Minimum 2 GB RAM
• Minimum 5 GB available hard disk space
• Screen with a resolution of at least 800 x 600 pixels
®
7
®
8
PC

Procedure

instruments must be in the same network. For example: A notebook with installed testo DataControl and a smartphone with installed testo Smart App are connected to the same WLAN.
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8 Using the product
2
Open the testo DataControl archiving software on the PC.
3
Click on Select instrument.
4
Select instrument.
An overview with available instruments opens.
A safety notice is displayed.
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8 Using the product
5
Click on Transfer data to DataControl and delete from instrument.
Data has been successfully transferred.
37
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9
9.1
9.2
Do not use any aggressive cleaning agents or solvents! Mild household
>
If the housing of the instrument is dirty, clean it with a damp cloth.
9.3
>
Keep screw connections clean and free of grease and other deposits; clean with a damp cloth as required.
9.4
>
Carefully blow out oil residues in the valve block using compressed air.
9.5
>
Check the instrument regularly for leaks. Keep to the permissible pressure range!
>
Calibrate the instrument regularly (recommendation: once a year).
9.6
The instrument is switched off.

9 Maintenance

Maintenance

Calibration

testo 550i is supplied with a factory calibration certificate as standard.
Recalibration once every 12 months is recommended in many applications.
This can be carried out by Testo Industrial Services (TIS) or other certified service providers.

Cleaning the instrument

cleaning agents and soap suds may be used.

Keeping connections clean

Removing oil residues

Ensuring measuring accuracy

Testo Customer Service will be happy to help you as required.
Changing batteries/rechargeable
batteries
38
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1
Fold out the suspension hook, release the clip and remove the battery
2
Remove the (rechargeable) batteries and insert new ones into the
polarity!
3
Attach and close the battery compartment lid (the clip must click into place).
4
Switch the instrument on.
9.7
Carrying out cleaning with the probe switched on may result in damage to the probe!
Damage to the sensor due to sharp objects!
1
Switch off the vacuum probe.
2
Put a few drops of rubbing alcohol into the sensor opening.
3
Seal the opening by placing your finger on it and shake the vacuum probe briefly.
4
Remove all the alcohol from the probe.
5
Repeat this process at least twice.
6
Leave the probe to dry for at least 1 hour.
vacuum pump and apply vacuum.
compartment lid.
battery compartment (3 x type AAA / Micro / R03). Observe the

Cleaning the vacuum probe

Contaminants such as oil may impair the accuracy of the vacuum sensor. Perform the following steps to clean the sensor.
ATTENTION
> Switch off the vacuum probe!
ATTENTION
> Do not insert any sharp objects into the probe!
9 Maintenance
To dry the sensor faster, you can connect the probe directly to a
39
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10
Measurement parameters
Pressure: kPa/MPa/bar/psi Temperature: °C/°F/K
Measured value recorder
Connections: 3
Pressure: 2 x pressure sensor
Measuring cycle
1 s
Interfaces
Pressure ports: 3 x 7/16" UNF, 1 x 5/8" UNF Via the App
to 870 psi
psi/1 kPa/0.001 Mpa
Accuracy (nominal temperature 22°C/71.6°F)
Pressure: ±0.5% of full scale value (±1 digit)
Measurable media
Measurable media: all media stored in the App.
refrigerants which contain ammonia.
Ambient conditions
Storage temperature: -20 to +60 °C/-4 to 140 °F
Housing
Material: ABS/PA/TPE
Weight: 592 g (without batteries)
IP class
IP54
Power supply
3 x AAA (rechargeable) batteries Battery life: 130 h
Auto off
10 minutes if activated, Bluetooth® off
Bluetooth range
Up to 490 ft (150 m)
Directives, standards and
EU Directive: 2014/30/EU You can find the EU declaration of

10 Technical data

Technical data
Feature Value
Valves: 2
Measuring ranges HP/LP pressure measuring range: -100 to
6000 kPa/-0.1 to 6 Mpa/-1 to 60 bar (rel)/-14.7
Overload 65 bar; 6500 kPa; 6.5 MPa; 940 psi
Resolution Resolution pressure: 0.01 bar/0.1
Not measurable: ammonia (R717) and other
Dimensions: approx. 77 x 109 x 60 mm
tests
40
conformity under the product-specific downloads on the Testo website:
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Page 39
Available refrigerants
No. of refrigerants
92
Selectable refrigerants in the
R114
R407C
R444B
R12
R407F
R448A
R123
R407H
R449A
R1233zd
R408A
R450A
R1234yf
R409A
R452A
R1234ze
R410A
R452B
R124
R414B
R453a
R125
R416A
R454A
R13
R420A
R454B
R134a
R421A
R454C
R22
R421B
R455A
R23
R422B
R458A
R290
R422C
R500
R32
R422D
R502
R401A
R424A
R503
R401B
R427A
R507
R402A
R434A
R513A
R402B
R437A
R600a
R404A
R438A
R718 (H2O)
R407A
R442A
R744 (CO2)
R11
R227
R417A
FX80
R236fa
R417B
I12A
R245fa
R417C
R1150
R401C
R422A
R1270
R406A
R426A
R13B1
R407B
R508A
R14
R407D
R508B
R142B
R41
R600
R152a
R411A
RIS89
R161
R412A
SP22
R170
R413A
Feature Value
instrument
10 Technical data
Refrigerants will be updated as they are released. Check with the testo Smart App for the most up-to-date refrigerants available.
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