testo 549 - testo 550 .
1 Contents 1 Contents 1 Contents ...................................................................................................3 2 Safety and the environment....................................................................4 2.1. About this document ........................................................................4 2.2. Ensure safety...................................................................................4 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 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 product. Symbols and writing standards Representation Explanation Warning advice, risk level according to the signal word: Warning! Serious physical injury may occur.
3 Product description > If the manifold falls or another comparable mechanical load occurs, the pipe sections of the refrigerant hoses may break. The valve stem shutoff may also be damaged, whereby further damage to the interior of the manifold may occur that cannot be identified from the outside. The refrigerant hoses must therefore be replaced with new, undamaged refrigerant hoses every time the manifold falls or following any other comparable mechanical load.
3 Product description 3.2. Overview Display and control elements 1 Mini-DIN probe socket for NTC temperature probe, with socket cover 2 Foldable hanging hook (on rear) 3 Display. Instrument status icons: Icon Significance Battery status Bluetooth® / / Measuring mode 4 Battery compartment. NOTE: Rechargeable batteries cannot be charged inside the battery compartment.
4 First steps 5 Control keys: Key Function [Set] Set units [R, ►, ■] Select refrigerant/ Start/stop / Leakage test [Mode] Change measuring mode to Leak mode [Min/Max/Mean] Display min./max./mean values [▲] Up key: Scroll through menu [P=0] Pressure zeroing Esc Switches to the measurement / home view [▼] Down key: Scroll through menu [ / ] Switching the instrument on/off Switch the display illumination on/off.
4 First steps Units / Parameter selection 1. Press [Set] to confirm or change unit parameter settings 2. Press [▲] or [▼] to change the units / parameters. The settings will be accepted once the last selection has been made.
5 Using the manifold WARNING Over tightening the valve stem shutoffs may cause: • Damage to the PTFE seal. • Mechanical deformation of the valve piston leading to the PTFE seal falling out. • Damage to the thread of the threaded spindle and the valve screw. • valve knobs to brake. Lightly tighten the valve knob. Do not use tools to tighten the valve stem shutoffs. 5 Using the manifold 5.1. Preparing for measurement 5.1.1. Switching the instrument On > Press [ / ].
5 Using the manifold WARNING Dropping this instrument or any other comparable mechanical shock can damage the refrigerant pipes and hoses. The valve actuators may also suffer damage, which in turn could result in further damage inside the instrument and may not be detectable from outside. > For your own safety you should return the manifold to the Testo Service Department for technical inspection.
5 Using the manifold 5.1.2. Connecting temperature probe(s) Note: The testo 549 does not include temperature probes in the initial scope of delivery. Surface temperature probe At least one NTC temperature probe must be connected to measure the pipe temperature, for automatic calculation of superheating and subcooling.
5 Using the manifold Display Description is not displayed Bluetooth is disabled. 2. To turn off the Bluetooth press [▲] and [▼] simultaneously and hold down for 3 seconds. - Once the Bluetooth icon is no longer shown on the display, Bluetooth is switched off. 5.1.4.
5 Using the manifold 5.2. Performing the measurement WARNING Risk of injury caused by refrigerant that is at high pressure, hot, cold, or poisonous! > Wear safety goggles and protective gloves. > Before pressurizing the measuring instrument: Always fasten the measuring instrument at the hanging hook in order to prevent it from falling (risk of breakage) > Check if the refrigerant hoses are intact and connected correctly before each measurement. Do not use a tool to connect the hoses.
5 Using the manifold The display illumination will flash if: • The critical pressure of the refrigerant is within 15 psi (1 bar) of the highest pressure (and temperature) where the refrigerant can still condense • The maximum. permissible pressure of 870 psi (60 bar) is exceeded. Key functions for 550 or 549 when used with optional probes > Press [▲] or [▼] to change the reading in the display. (The temperature probes must be connected.
5 Using the manifold Leak test / pressure drop test Systems can be tested for tightness with the temperaturecompensated leak test. The system pressure and the ambient temperature are measured over a defined period of time, typically with an inert gas such as Nitrogen. A temperature probe can be connected that measures the ambient temperature. : Optional air temperature probe, part. no. 0613 1712) is recommended.
6 Technical data 6 Technical data 6.1.1. Bluetooth module (only testo 550) ® The Bluetooth option may only be operated in countries in which it is approved. Feature Values Bluetooth type LSD Science & Technology Co.
6 Technical data 6.1.2. General technical data Characteristic Values Parameters Pressure: kPa / MPa / bar / psi Temperature: °C / °F / K Sensors 2 Pressure: sensors, 2 Temperature (NTC Thermistors) Meas. cycle 0.5 s Interfaces Pressure connections: 3 x 1/4" SAE 2 Temperature NTC measurement channels Measuring ranges HP/LP pressure measuring range: -100 to 6000 kPa / -0.1 to 6 MPa / -1 to 60 bar (rel) / -14.
6 Technical data Measurable media All refrigerants that are stored in the testo 549 and testo 550 Ammonia (R717) and other refrigerants which contain ammonia will damage the manifold Ambient conditions Operating temperature: -4 to 122 °F (-20 to 50 °C) Storage temperature: -4 to 140 °F (-20 to 60 °C) Bluetooth Range >20 m / 65 ft (unobstructed field) Housing Material: ABS/PA/TPU Dimensions: 7.87 x 4.29 x 2.48 in. (265 x 135 x 75 mm) Weight: approx. 2.83 lbs.
7 Maintaining the product 7 Maintaining the product Cleaning the instrument Do not use harsh cleaning agents or solvents! Mild soap and water may be used. > Clean instrument using a damp cloth. Keeping connections clean > Keep screw connections clean and free of grease and other deposits, clean with a moist cloth as required. Removing oil residues > Carefully blow out oil residues in valve block using compressed air.
8 Tips and assistance Changing the valve or valve stem shutoff DO NOT ATTEMPT to change the valve stems. Changing the valve stem shutoff or valves themselves will void the warranty. Send the measuring instrument to Testo Customer Service. 8 Tips and assistance 8.1. Questions and answers Question Possible causes/solution Batteries are nearly discharged. > Replace batteries. flashes The instrument switches off automatically.
8 Tips and assistance 8.3. 8.4. Error reports Question Possible causes/solution ---- is lit up instead of measurement parameter display Sensor or cable defective > Please contact your dealer or Testo Customer Service Display EEP FAIL Electronics (Hardware Fault) > Please contact Testo Customer Service Accessories and spare parts Description Article no. Temperature clamp probe - 4.9 ft. cable length (1.5m) 0613 5505 Temperature clamp probe - 14 ft.
9 EC declaration of conformity 9 22 EC declaration of conformity
9 EC declaration of conformity 23
Testo Inc. 40 White Lake Road Sparta, N. J. 07871 Phone: 862 354 5001 Fax: 862 354 5020 Email: info@testo.com www.testo.com 0970 5502 en-US 01 V02.
