testo 557 · Digital manifold Instruction manual
1 Contents 1 Contents 1 Contents ...................................................................................................3 2 Safety and the environment ....................................................................4 2.1. About this document ........................................................................4 2.2. Ensure safety...................................................................................5 2.3. Protecting the environment .......................................
2 Safety and the environment 2 Safety and the environment 2.1. About this document Use > Please read this documentation through carefully and familiarize yourself with the product before putting it to use. Pay particular attention to the safety instructions and warning advice in order to prevent injuries and damage to the products. > Keep this document to hand so that you can refer to it when necessary. > Hand this documentation on to any subsequent users of the product.
2 Safety and the environment 2.2. Ensure safety > Do not operate the instrument if there are signs of damage at the housing, mains unit or feed lines. > Do not perform contact measurements on non-insulated, live parts. > Do not store the product together with solvents. Do not use any desiccants. > Carry out only the maintenance and repair work on this instrument that is described in the documentation. Follow the prescribed steps exactly. Use only original spare parts from Testo.
3 Specifications 3 Specifications 3.1. Use The testo 557 is a digital manifold for maintenance and service work on refrigeration systems and heat pumps. The device is only to be used by qualified expert personnel. With its functions the testo 557 replaces mechanical manifolds, thermometers and pressure/temperature charts. Pressures and temperatures can be applied, adapted, tested and monitored. The testo 557 is compatible with most of the non-corrosive refrigerants, water and glycol.
3 Specifications Feature Values Resolution Resolution pressure: 0.1 psi / 0.01 bar / 1 kPa / 0.001 MPa Resolution temperature: 0.1 °F / 0.1 °C / 0.1 K Vacuum resolution: 1 Mikron (from 0 to 1000 Mikron) 10 Mikron (from 1000 to 2000 Mikron) 100 Mikron (from 2000 to 5000 Mikron) 500 Mikron (from 5000 to 10000 Mikron) 5000 Mikron (from 10000 to 20.000 Mikron) Accuracy (nominal Pressure: ±0.5% of final value (±1 digit) temperature 71.6 °F Temperature (-40…302 °F/-40…+150 °C): / 22 °C) ±0.
3 Specifications Feature Selectable refrigerants in the instrument Refrigerants that can be updated via APP 8 Values 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)
3 Specifications Feature Values Measurable media Measurable media: all media that is stored in the testo 557. Not measurable: ammonia (R717) and other refrigerants which contain ammonia Ambient conditions Operating temperature: -4…122°F / -20…50°C -10 ... 50°C / 14 ... 122 °F (Vacuum) Storage temperature: -4…140°F / -20…60°C Humidity in area of use: 10… 90%rF Housing Material: ABS / PA / TPE Dimensions approx. 280 x 135 x 75 mm Weight: approx.
4 Product description 4 Product description 4.1. Overview Display and control elements 1 2 3 4 Front connection for external vacuum probe Sensor socket Mini-DIN for NTC-temperature sensor, with socket cover Suspension attachment, foldable (backside). Display. Instrument status icons: Icon Meaning Battery capacity Bluetooth®, see Switching Bluetooth® on and off, page 15 / 5 10 / Select measuring mode, see Choosing the measuring mode, page 16 Battery compartment.
5 First steps 6 Key Function [Set] Set units [R, ►, ■] Select refrigerant / Start-Stop leak test [Mode] Switch between measuring modes [Min/Max/Mean] Show min, max, mean values [▲] Up-key: Change display view. [P=0] Pressure zeroing Esc Switches to the measurement/home view. [▼] Down-key: changes display view. / 7 8 9 10 Inspection glass for refrigerant flow. 4 x valve actuators 4 x hose brackets for refrigerant hoses Connection 7/16" UNF, brass.
5 First steps When not in use for long period: Take out the batteries / rechargeable batteries. Performing settings 1. Press [Set] repeatedly, 2. Press [▲] or [▼] to select the unit/parameter. The settings will be accepted once the last selection has been made. Key functions Representation Explanation [▲] or [▼] Change parameter, select unit [Set] Select units/parameters Adjustable parameters Representation Explanation °C, °F Set unit for temperature. bar, kPa, MPa, psi Set unit for pressure.
6 Using the product 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). Tighten the valve positioner only hand-tight. Do not use any tools to tighten the valve positioner. 6 Using the product 6.1. Preparing for measurement 6.1.1. Switching the instrument on > Press [ ].
6 Using the product Deactivating the surface compensation factor for insertion and air temperature sensor A surface compensation factor has been set in the measuring instrument to reduce the measuring errors in the main field of applications. This reduces measuring errors when using surface temperature sensors. 1. Press [Set] repeatedly until Tfac is displayed. 2. Press [▲] or [▼] to set Tfac to Off. 3. Press [Set] to continue through the settings menu until the measurement/home view is displayed.
6 Using the product Representation Explanation [R, ►, ■] Confirm the setting and exit the refrigerant menu. Available refrigerants Representation Explanation R... Refrigerant number of refrigerant acc. to ISO 817 --- no refrigerant selected. Example: Setting refrigerant R401B 1. Press [▲] or [▼] several times, until R401B flashes. 2. Press [R, ►, ■] to confirm the setting. Quitting the refrigerant selection > Press [R, ►, ■] or automatically after 30 s, if no other key has been pressed. 6.1.3.
6 Using the product Display flashes is permanently displayed is not displayed Explanation There is no Bluetooth connection, or a potential connection is being searched for. There is a Bluetooth connection. Bluetooth is disabled. 2. Press [▲] and [▼] simultaneously and hold down for 3 seconds. - Once the Bluetooth icon is no longer shown on the display, Bluetooth is switched off. 6.1.5. Choosing the measuring mode 1. 2. 3. - Press [Set] several times Press [▲] or [▼] to select the function.
6 Using the product 6.2. Performing the measurement WARNING Risk of injury caused by pressurized, hot, cold or toxic refrigerants! > Wear protective goggles and safety gloves. > Before applying pressure to the measuring instrument: Always fasten the measuring instrument on the suspension attachment to prevent it from falling down (danger of breakage) > Before each measurement check the refrigerant hoses for flawless condition and correct connection.
6 Using the product Key functions > [▲] or [▼]: Change the readings display.
7 Maintaining the product Evacuation / vacuum display 5. Connect Vakuum probe. Vacuum measurement ✓ The vacuum probe is plugged into the front connection of the manifold and connected to the system. 1. [Mode] 2 x press. - The vacuum measurement menu appears. If ambient pressure is applied to the vacuum probe, then oooo is shown on the display. 2. Start the vacuum pump. - Once the measuring range 0 to 20,000 microns is reached, the current vacuum value is shown on the instrument display.
7 Maintaining the product > Check instrument regularly for leaks (recommended: annually). Keep to the permissible pressure range! > Calibrate instrument regularly (recommended: annually). Changing batteries/rechargeable batteries ✓ Instrument is switched off. 1. Fold out the suspension device, loosen the clip and remove the cover of the battery compartment. 2. Remove empty batteries/rechargeable batteries and insert new batteries/rechargeable batteries (4x 1.
8 Tips and assistance 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. To dry the sensor faster, you can connect the probe directly to a vacuum pump and draw vacuum. 8 Tips and assistance 8.1. Questions and answers 8.2. Question Possible causes/solution flashes Batteries are almost empty. > Change batteries.
8 Tips and assistance 8.3. Error reports Question Possible causes/solution ---- lights up instead of the Sensor or cable faulty temperature display (T1/T2 > Please contact your dealer or or toh/tcu) Testo Customer Service ---- lights up instead of the - No actual superheating / display for superheating / subcooling. subcooling (SH/SC or - No theoretical condensation or ∆toh/∆tcu) evaporation temperature can be calculated based on the pressure measured.
9 Declarations Description Article no. External vacuum probe Please contact Testo Service. For a complete list of all accessories and spare parts, please refer to the product catalogues and brochures or look up our website at: www.testo.com 9 Product Declarations Testo 557 Mat.-No. 0560 1557 Date 09.02.
9 Declarations Country Comments Australia E 1561 Brazil Este equipamento opera em caráter secundário, isto é, não tem direito a proteção contra interferência prejudicial, mesmo de estações do mesmo tipo, e não pode causar interferência a sistemas operando em caráter primário. Canada Product IC: 12231A-05631557 see IC Warnings Europe + EFTA The EU Declaration of Conformity can be foun homepage www.testo.
9 Declarations Korea MSIP-CMM-Toi-557 see KCC Warning Russia Authorized Turkey Authorized South Africa ICASA: TA-2016/1202 USA Product FCC ID: 2ACVD056001557 FCC Warnings Bluetooth SIG Listing Feature Bluetooth Range Bluetooth type Qualified Design ID Bluetooth radio class Bluetooth company RF Band Output power Values < 20 m (free field) L Series BLE module (08 May 2013) based on TI CC254X chip B016552 Class 3 LSD Science & Technology Co.
9 Declarations For your own safety Shielded cables should be used for a composite interface. This is to ensure continued protection against radio frequency interference. FCC warning statement This equipment has been tested and found to comply with the limits for a Class C digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
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