Testo 550s / Testo 557s Digital Manifold
testo 550s / testo 557s digital manifoldInstruction manual
ContentsContents1234566.1About this document .5Safety and disposal.5Product-specific approvals .5Product-specific information.6Use.7Product description .8Overview of the testo 550s . 86.2Overview of the testo 557s . 96.3Overview of main menu . 106.4Control keys . 117First steps .117.1Inserting (rechargeable) batteries . 117.2Switching the instrument on and off . 127.3Setup wizard. 128Using the product.138.1Preparing for measurement . 138.1.1Operating the valve positioners . 138.1.2Automatic mode .148.2Measuring mode . 148.2.1Refrigeration .148.2.2Evacuation .198.2.3Pressure Leak Test .228.2.4Target Superheat .258.2.5Compressor Test (DLT).298.2.6Delta T .318.3Bluetooth . 338.3.1Probes compatible with the instrument . 338.3.2Establishing a connection . 348.3.3Switching on/off.348.3.3.1Switching on .358.3.3.2Switching off .358.3.3.3Manual probe selection .36
Contents8.4Settings . 368.4.1Backlight duration . 378.4.2Backlight brightness. 388.4.3Auto Off . 398.4.4Auto Tfac (Temperature compensation factor) . 408.4.5Units . 418.4.6Language . 428.4.7Setup Wizard . 438.4.8Restore factory settings . 448.4.9Device Info . 459Smart App. 469.1App – user interface . 469.2Main menu . 479.3Measurement menu. 489.3.1Basic view . 499.3.1.1Graphic view . 499.3.1.2Table view . 509.3.2Refrigeration . 509.3.3Target superheat . 539.3.4System Leak Test . 559.3.5Evacuation . 579.4Customer. 589.4.1Creating and editing a customer . 589.4.2Creating and editing measuring sites . 599.5Memory . 619.5.1Searching for and deleting measurement results . 619.6Sensors . 629.6.1Information . 629.6.2Settings . 639.7Settings . 639.7.1Language . 639.7.2Measurement settings . 649.7.3Company details . 649.7.4Privacy settings . 649.8Help and Information . 659.8.1Instrument information . 659.8.2Tutorial . 659.8.3Exclusion of liability . 66
Contents9.9testo DataControl archiving software . 669.9.1System requirements .669.9.1.1Operating system .669.9.1.2PC.679.9.2Procedure .6710Maintenance.6910.1Calibration . 6910.2Cleaning the instrument . 6910.3Keeping connections clean . 6910.4Removing oil residues . 6910.5Ensuring measuring accuracy . 6910.6Changing batteries/rechargeable batteries. 701112Technical data .70Tips and assistance .7312.1Questions and answers . 7312.2Error Codes . 7312.2.1Main screen .7312.2.2Status view .7412.3Accessories and spare parts . 7413Support .74
1 About this document1 About this document The instruction manual is an integral part of the instrument. Pay particular attention to the safety instructions and warning advice in orderto prevent injury and damage to the product. Please read this instruction manual through carefully and familiarize yourselfwith the product before putting it to use. Familiarity with a PC as well as the Microsoft products is assumed in thisdocumentation.Symbols and writing standardsDisplayExplanationNote: basic or further information12 Menu[OK]Warning advice, risk level according to the signal word:Warning! Serious physical injury may occur.Caution! Minor physical injury or damage to the equipment mayoccur. Take the specified precautionary measures.Action: several steps, the sequence must be followedResult of an actionRequirementActionElements of the instrument, the instrument display or theprogram interface.Control keys of the instrument or buttons of the programinterface.2 Safety and disposalPlease observe the Testo information document (enclosed with the product).3 Product-specific approvalsPlease find the current country approvals in the Approvals and Certificationsdocument.5
4 Product-specific information4 Product-specific information The measuring instrument being dropped or any other comparablemechanical stress may cause breakage of the pipe pieces in the refrigeranthoses. The valve positioners may also suffer damage, causing furtherdamage inside the measuring instrument that is not necessarily visibleexternally. Therefore, always replace the refrigerant hoses with new onesafter the measuring instrument is dropped or after any comparablemechanical stress. For your own safety, you should return the measuringinstrument to the Testo Customer Service for technical inspection. Electrostatic charging may destroy the instrument. Integrate all thecomponents (system, manifold's valve block, refrigerant bottle, etc.) into thepotential bonding (earthing). Please see the safety instructions for thesystem and the refrigerant used. Refrigerant gases can harm the environment. Please note the applicableenvironmental regulations. Use with A2L refrigerantsTesto measuring instruments (as of July 2020) can be used in compliancewith the prescribed laws, standards, directives and safety regulations forrefrigeration systems and refrigerants as well as regulations of themanufacturers of refrigerants of safety group A2L as per ISO 817.Regional standardization and interpretation must always be observed.For example, DIN EN 378-Part 1-4 applies to the scope of the ENstandards.During maintenance work, the employer must ensure that a hazardousexplosive atmosphere is prevented (see also: TRBS1112, TRBS2152VDMA 24020-3).A hazardous and potentially explosive atmosphere must be anticipatedduring maintenance and repair work on refrigeration systems withflammable refrigerants (e.g. those of category A2L and A3).Maintenance, repairs, removal of refrigerants and commissioning ofsystems may only be carried out by qualified personnel.6
5 Use5 Usetesto 550s and testo 557s are digital manifolds for maintenance and servicework on refrigeration systems and heat pumps. They may only be used byqualified authorized personnel.The functions of the instruments testo 550s and testo 557s mean they canreplace mechanical manifolds, thermometers and pressure/temperature charts.Pressures and temperatures can be applied, adapted, tested and monitored.The instruments testo 550s and testo 557s are compatible with most noncorrosive refrigerants, water and glycol. The instruments testo 550s and testo557s are not compatible with refrigerants containing ammonia.The products must not be used in potentially explosive atmospheres!7
6 Product description6 Product description6.1Overview of the testo 550sMini-DIN probe socket for NTC1 temperature probe, with socketcover2Foldable suspension device(rear).Rear Battery compartment 3 Display. Instrument status icons45 Control keys6 Sight glass for refrigerant flow7 2 x valve positioner83 x connections 7/16" UNF, brass9 Left/right: Low/high pressure forrefrigerant hoses with quick8Mini USB port for firmwareupdateIt is not possible to chargerechargeable batteries in theinstrument.3 x hose bracket for refrigeranthoses
6 Product descriptionrelease screw fitting; passagecan be closed via valvepositioner Centre: e.g. forrefrigerant bottles, with sealingcap, refrigerant hoses with quickrelease screw fitting; passagecan be closed via valvepositioner.6.2Overview of the testo 557sMini-DIN probe socket for NTC1 temperature probe, with socketcover2Foldable suspension device(rear).Rear Battery compartment Mini USB port for firmwareupdate3 Display. Instrument status icons45 Control keys6 Sight glass for refrigerant flowIt is not possible to chargerechargeable batteries in theinstrument.9
6 Product description7 4 x valve positionerConnection 7/16" UNF, brass.High pressure, for refrigerant9 hoses with quick-release screwfitting, passage can be closed viavalve positioner.Connection 7/16" UNF, brass,11 e.g. for refrigerant cylinders, withsealing cap6.34 x hose bracket for refrigeranthoses10Connection 5/8" UNF, brass, forvacuum pumpConnection 7/16" UNF, brass.Low pressure, for refrigerant12 hoses with quick-release screwfitting, passage can be closed viavalve positioner.Overview of main menuMeasuring modeBluetooth Settings108RefrigerationEvacuationSystem Leak TestTarget SuperheatCompressor Test (DLT)Delta TConnection to the testo Smart App or Smart ProbesBacklight durationBacklight brightnessAuto OffAuto Tfac (Temperature compensation factor)UnitsLanguageSetup WizardRestore factory settingsInstrument information
7 First stepsControl keys6.4SymbolMeaning Open menu Confirm input Switch on the display illumination:Press and hold the key for 2s Switch off the display illumination:Press and hold the key for 2sChange/navigate the display screen./ Switches to the measurement view Back to the menu Switch off the instrument: Press andhold the key for 2s7 First stepsInserting (rechargeable) batteries7.11 Unfold the suspension hook and open the battery compartment (cliplock).2 Insert the batteries (scope of delivery) or rechargeable batteries (4 x1.5V, type AA / Mignon / LR6) into the battery compartment. Observethe polarity!3 Close the battery compartment. After insertion of the batteries, the instrument switches onautomatically and goes into the settings menu.When not in use for a long period: Take out the (rechargeable)batteries.11
7 First stepsSwitching the instrument on and nInstrument is switched on.When the measuring instrument is started for the first time, the setupwizard guides you through the following setting parameters step bystep:- Language- testo Smart AppInstrumentonPressand holddown ( 2 s)Instrument is switched off.The instrument setup that is implemented can be adapted at any timein the Settings menu.7.3Setup wizardWhen the testo 550s / testo 557s is started up for the first time and after thefactory settings have been reset, the setup wizard is activated and guides youstep-by-step through the following setup parameters.The instrument setup that is implemented can be adapted at any timein the Settings menu.Language selection and QR code Instrument is switched on and the initialization phase has beencompleted.1 Select language: Press [ ] / [ ]and [Menu/Enter] to confirm.Selecting the language activatesthe appropriate presetting of theunits of measurement12
8 Using the product2 Take a photo of the QR code of thetesto Smart App and press[Menu/Enter] to confirm.- The measurement menu is displayed.8 Using the productPreparing for measurement8.18.1.1Operating the valve positionersWith respect to the refrigerant path, the digital manifold behaves just like aconventional four-way manifold (only applies to the testo 557s): The passagesare opened by opening the valves. The applied pressure is measured with thevalves closed and the valves opened.- Open the valve: Turn valve positioner anticlockwise.- Close the valve: Turn valve positioner clockwise.WARNINGValve positioner tightened too tightly. Damage to the PTFE seal (1). Mechanical deformation of the valvepiston (2) leading to the PTFE seal (1)falling out.Damage to the thread of the threadedspindle (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 valvepositioners.13
8 Using the product8.1.2Automatic modeThe manifold automatically detects the pressure difference between the lowpressure and high-pressure sides. If the measured pressure on the low pressureside is 1 bar higher than on the high pressure side, a dialogue appears and thedisplay can be changed accordingly. If “yes” is selected, the low pressure movesfrom left to right and the high pressure moves from right to left.This mode is particularly suitable for air conditioning systems that providecooling and heating.8.2Measuring modeWARNINGRisk of injury caused by refrigerant that is under high pressure, hot, cold,or toxic! Wear protective goggles and safety gloves. Before applying pressure to the measuring instrument: Always fasten themeasuring instrument on the suspension hook to prevent it from falling(danger of breakage). Before each measurement, check the refrigerant hoses are intact andconnected properly. Do not use any tools to connect the hoses; only tightenhoses hand-tight (max. torque 5.0 Nm/3.7 ft*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 theseare frequently operated at higher pressures!8.2.1RefrigerationThe Refrigeration application is used to determine the following systemmeasuring values: High pressure Low pressure Refrigerant evaporating temperature Refrigerant condensation temperature Temperature of suction line Temperature of liquid line14
8 Using the product Superheating SubcoolingAn NTC temperature probe (accessory) must be connected formeasuring the pipe temperature and for automatic calculation ofsuperheating and subcooling.These can be fixed cable temperature probes or Testo Smart Probes(e.g. testo 115i).Before each measurement, check that the refrigerant hoses are inflawless condition.Before each measurement, zero the pressure sensors. All connectionsmust be pressureless (ambient pressure). Press the [ ] (P O) key for2 seconds to zero the sensors. The instrument is switched on and the measurement menu isdisplayed. All connections must be pressureless (ambient pressure).1 Press [Menu/Enter] to confirm.- The main menu is displayed.2 Press [Menu/Enter] to confirm.15
8 Using the product3 Select Refrigeration and press[Menu/Enter] to confirm.- The measurement menu is displayed.4 Connect the refrigerant hoses.4.1 Close the valve positioners.4.2 Connect the refrigerant hoses for low-pressure side (blue) and highpressure side (red) to the measuring instrument.4.3 Connect the refrigerant hoses to the system.5 Connect testo 115i or fixed cable probes.16
8 Using the product6 Set refrigerant.6.1 Press the key [ ] (Rxx) (refrigerant number according to ISO 817).- The refrigerant menu opens and thecurrent refrigerant is highlighted.6.2 Setting the refrigerant: Press [ ] or[ ] to select the refrigerant andpress [Menu/Enter] to confirm.You have the option of setting up favourite refrigerants on yourinstrument and in the app. These then appear at the beginning of therefrigerant list.To do this, the app must be connected to the instrument via Bluetooth.In the refrigerant list (App), you can now choose the refrigerant as afavourite by clicking on the star.The new favourite refrigerant will now be synchronized to the testo550s or testo 557s.Note: During synchronization, the refrigerant list/selection on theinstrument must remain closed.- The newly set refrigerant is displayed in the refrigerant list.7 Press the [ ] (P O) key for 2 seconds to zero the sensors.- Zeroing takes place.17
8 Using the product8 Pressurize the measuring instrument.- The measurement startsautomatically.- Measurement results are displayed: Low/high pressure Condensation and evaporation temperature Suction and liquid line temperature Superheating and subcoolingWith zeotropic refrigerants, the evaporation temperature to/Ev isdisplayed after complete evaporation/the condensation temperaturetc/Co is displayed after complete condensation.The measured temperature must be assigned to the superheating orsubcooling side (toh -- tcu). Dependent on this assignment, the displaywill show toh/T1 resp. Δtoh/SH or tcu/T2 resp. Δtcu/SC, depending on theselected display.Reading and display illumination flash: 1 bar/14.5 psi before reaching critical refrigerant pressure When max. permissible pressure of 60 bar/870 psi is exceeded.All values can be saved and sent in the app. The data can also betransferred between the app and the testo DataControl software.18
8 Using the product8.2.2EvacuationVia the Evacuation application, foreign gases and moisture can be removedfrom the refrigeration circuit.The testo 552i is recommended for carrying out the measurement. Themeasurement is also possible without the testo 552i, with testo550s/testo 557s. However, this is not advisable due to insufficientaccuracy. The instrument is switched on and the measurement menu isdisplayed. Bluetooth is enabled. Hoses are connected.1 Press [Menu/Enter].2 Press [ ] / [ ] to select MeasuringMode and press [Menu/Enter] toconfirm.- The Measuring Mode menu isdisplayed.19
8 Using the product3 Press [ ] / [ ] to select Evacuation and press [Menu/Enter] toconfirm.- The Configure Target Lines menu isdisplayed.4 Adjust the Target Line value4.1 Press the [ ] key and in the Evacuation Target field, select ManualInput.4.2 Press [Menu/Enter] to confirm.- The field is activated.4.3 Press [ ] / [ ] to set the value.4.4 Press [Menu/Enter] to confirm.5 Adjust the Maximum Decay Target value.5.1 Press the [ ] key and in theMaximum Decay Target field, selectManual Input.20
8 Using the product5.2 Press [Menu/Enter] to confirm.- The field is activated.5.3 Press [ ] / [ ] to set the value.5.4 Press [Menu/Enter] to confirm.6 Confirm the entries in steps 4 and 5:Press [ ] to select OK and press [Menu/Enter] to confirm.- A connection is established with available Bluetooth probes.- testo 552i is switched on and connected automatically.- The Evacuation measurement menuis displayed.21
8 Using the product7 Start measurement: Press the [ ] (Start) key.- Once the measuring range 0 to20,000 microns / 0 to 26.66 mbar isreached, the current vacuum value isshown on the instrument display.The instrument also displays thecurrent ambient temperature, thewater evaporation temperature whichcorresponds to the vacuum reading,and the delta between these twotemperatures.8 End measurement: Press the [ ] (Stop) key.- The measurement result is displayed.Press the [ ] New key to reset the determined values. If necessary, atest can also be started again.9 Press [Menu/Enter] to return to the main menu.8.2.3Pressure Leak TestThe temperature compensated leakage test can be used to check the leaktightness of systems. For this purpose both the system pressure and theambient temperature are measured over a defined period of time.To this end, a temperature probe that measures the ambienttemperature or a Smart Probe for measuring the air temperature can beconnected. As a result, information is provided about the temperaturecompensated differential pressure and about the temperature at thebeginning/end of the test. Due to the temperature compensation, theactual pressure drop is displayed as delta P. If no temperature probe isconnected, you may also perform the tightness test without temperaturecompensation.Surface temperature probes (e.g. testo 115i) can also be used for thetemperature-compensated leakage testing, but must not be used tomeasure surface temperature. They must be positioned as far aspossible to measure the air temperature. If a surface probe is used, inthe Settings menu of the testo 550s / testo 557s, the Auto Tfac(Temperature compensation factor) must be switched off, seesection 8.3.4.22
8 Using the productThe testo 550s or testo 557s manifold is used to carry out themeasurement. The instrument is switched on and the measurement menu isdisplayed. Hoses are connected.1 Press [Menu/Enter].2 Press [ ] / [ ] to select MeasuringMode and press [Menu/Enter] toconfirm.- The Measuring Mode menu isdisplayed.3 Press [ ] / [ ] to select PressureLeak Test and press [Menu/Enter]to confirm.23
8 Using the product- For the temperature-compensated leak test, a connection isestablished with available Bluetooth probes. If cable probes areconnected to the instrument, they are prioritized for the compensation.Please note that only air probes are ideal for temperaturecompensated leakage testing.- testo 905i / testo 605i is switched on and automatically connected.Other temperature probes compatible with testo 550s / testo 557scan be connected.- The Pressure Leak Test menu is displayed.T Comp is shown on the display if a compatible probe is connected viaBluetooth or cable. The temperature compensation is used for themeasurement result.4 Press the [ ] (Start) key.- The leakage test is carried out.5 Press the [ ] (Stop) key.- The leakage test is terminated.- The measurement result isdisplayed.Press the [ ] New key to reset the determined values. If necessary, atest can also be started again.The measurement result can be displayed graphically on the manifoldas well as in the app.6 Press [Menu/Enter] to return to the main menu.24
8 Using the productTarget Superheat8.2.4This feature makes it possible to connect the testo 550s and testo 557smanifolds to two additional testo 605i Smart Probes in order to calculate thetarget superheat. This application can only be used for split air conditioningsystems/heat pumps with a fixed expansion valve. The two connected testo605i Smart Probes determine the ODDB and RAWB values. The targetsuperheat value appears on the display as a result.The following are used for the measurement: testo 115i (clamp thermometer) or fixed cable probes testo 605iin practice.Alternatively, the values can be configured manually.Before each measurement, check that the refrigerant hoses are inflawless condition.Before each measurement, zero the pressure sensors. The instrument is switched on and the measurement menu isdisplayed. All connections must be pressureless (ambient pressure). Bluetooth is enabled.1 Press [Menu/Enter].2 Press [ ] / [ ] to select MeasuringMode and press [Menu/Enter] toconfirm.25
8 Using the product- The Measuring Mode menu isdisplayed.3 Press [ ] / [ ] to select Target Superheat and press [Menu/Enter]to confirm.- The Configure Target Superheatmenu is displayed.The values can either be configured manually via Manual Input orrecorded by the testo 605i via Smart Probe. When
testo 550s / testo 557s digital manifold . Instruction manual . Contents . Contents. . With respect to the refrigerant path, the digital manifold behaves just like a conventional four-way manifold (only applies to the testo 557s): The passages are opened by opening the valves. The applied pressure is measured with the
testo 550s / testo 557s digital manifold . Instruction manual . Contents . Contents. 1 About this document . With respect to the refrigerant flow path, the digital manifold behaves just like a conventional four-way manifold: The passages are opened by opening the valves. The applied pressure is measured with the valves closed and the valves
testo 557s are digital manifolds for maintenance and service work refrigeration systems, heat pumps, and other air conditioning systems. They may only be used by qualified authorized personnel. The
The functions of the testo 549 and testo 550 are designed to replace analog manifolds, thermometers and pressure/temperature charts. Pressures and temperatures can be applied, adapted, tested and monitored. Testo 549 and testo 550 are compatible with most non-corrosive refrigerants, water and glycol. Testo 549 and testo 550 are not
The functions of the testo 549 and testo 550 are designed to replace analog manifolds, thermometers and pressure/temperature charts. Pressures and temperatures can be applied, adapted, tested and monitored. Testo 549 and testo 550 are compatible with most non-corrosive refrigerants, water and glycol. Testo 549 and testo 550 are not
The functions of the testo 549 and testo 550 are designed to replace analog manifolds, thermometers and pressure/temperature charts. Pressures and temperatures can be applied, adapted, tested and monitored. Testo 549 and testo 550 are compatible with most non-corrosive refrigerants, water and glycol. Testo 549 and testo 550 are not
Testo measuring instruments (as of July 2020) can be used in compliance with the prescribed laws, standards, directives and safety regulations for refrigeration systems and refrigerants as well as regulations of the
testo 549 and testo 550 are compatible with most non-corrosive refrigerants, water and glycol. testo 549 and testo 550 are not compatible with refrigerants containing ammonia. The instruments must not be used in explosive environments! 3.2. Technical data 3.2.1. Bluetooth module (testo 550) The Bluetooth option may only be operated in .
The American Board of Radiology . i The Diagnostic Radiology Milestone Project The Milestones are designed only for use in evaluation of resident physicians in the context of their participation in ACGME accredited residency or fellowship programs. The Milestones provide a framework for the assessment of the development of the resident physician in key dimensions of the elements of physician .
