testo 316-3 · Leakage detector for refrigerants 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...................................................................................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 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 > 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. > Temperatures given on probes/sensors relate only to the measuring range of the sensors. Do not expose handles and feed lines to any temperatures in excess of 70 °C unless they are expressly permitted for higher temperatures. 2.3.
3 Specifications 3 Specifications 3.1. Use The testo 316-3 is a leakage detector for fast and reliable leak detection in refrigeration systems and heat pumps. Gas concentrations are indicated both visually and audibly. The testo 316-3 is not protective equipment! Do not use the testo 316-3 as a monitoring instrument for personal safety. 3.2. 6 Technical data Feature Values Sensor Electrochemical sensor with heated diode Detectable refrigerants All HFCs, HCFCs and CFCs (e.g.
3 Specifications Feature Values Operating conditions -20 to 50 °C / -4 to 122 °F 20 % - 80 %RH, non-condensing Weight Approx. 400 g (incl. batteries) Dimensions (L x W x H) Housing: approx. 270 x 65 x 65 mm Length of flexible sensor shaft including sensor head: approx. 285 mm Warranty Measuring instrument: 2 years (sensor excluded), For warranty terms see www.testo.
4 Product description 4 Product description 4.1.
5 First steps 5 First steps 5.1. Commissioning Installing the sensor 1. Unscrew the protective cap (1) from the sensor head (counterclockwise). 2. Take the sensor (2) out of its protective film packaging. 3. Carefully push the three sensor wires into the sockets in the sensor head, until they are no longer visible. NOTICE Malfunction due to damaged sensor wires! > Do not damage sensor wires. 4. Put the protective cap on the sensor and tighten by turning in a clockwise direction. Insert batteries 1.
5 First steps 4. Slide the top part of the handle back on. Switch on WARNING Danger of explosion! > The instrument must not be used in environments where flammable gases are present. > Press [ ] briefly. - PWR LED lights up and all yellow gas concentration indicator LEDs start to flash one after another. - The sensor is heated up. - The instrument is ready to use once the gas concentration indicator LEDs have gone off and one beep per second can be heard. Switch off > Press and hold down [ 10 ].
6 Using the product 6 Using the product 6.1. Performing settings Setting the sensitivity There are two sensitivity levels: HI (high, default) and LO (low). The LO level is 8x less sensitive than the HI setting. At high refrigerant gas concentrations, set the sensitivity to LO. 6.2. > Press [ ] briefly to set the sensitivity to LO. > Press [ ] again to revert to the HI level. Finding leaks NOTICE Sensor destruction due to desorbing substances (e.g.
7 Maintaining the product 7 Maintaining the product Cleaning the instrument > If the housing of the instrument is dirty, clean it with a damp cloth. Do not use any aggressive cleaning agents or solvents! Weak household cleaning agents and soap suds may be used. Replacing the sensor The electrochemical sensor has a service life of approximately 100 operating hours. Once this time is up, or if you suspect that some leaks have not been detected, the sensor must be replaced.
7 Maintaining the product CAUTION Risk of burns due to hot sensor head! > Before removing the protective cap: switch instrument off and let the sensor head cool down. 1. Unscrew the protective cap (1) from the sensor head (anticlockwise). 2. Push the spent filter (3) out of the protective cap using a paper clip or something similar. 3. Insert the new filter into the protective cap. 4. Put the protective cap on the sensor head and tighten by turning in a clockwise direction.
8 Tips and assistance 8 Tips and assistance 8.1. Questions and answers Question Possible causes Possible solution All gas concentration indicator segments are lit up, audible signal is off Sensor is missing or is no longer fully functional > Change sensor. At the smallest of movements, the instrument signals a leak • Sensor wires are kinked. > • Sensor has been exposed to a high degree of humidity for too long. > Remove sensor and examine wires. If necessary, straighten wires with pincers.
8 Tips and assistance 15
0970 3163 en 03 V01.
