User manual HILTI PRA20

[. . . ] 50 hours Operating temperature -20° to +50°C (-4° to +122°F) Storage temperature -30° to +60°C (-22° to +140°F) Protection class IP 56 (as per IEC 529) Mounting thread on detector M5 x 10 mm (0. 4 inch) 2. Description 2. 1 PRA 20 laser detector The Hilti PRA 20 is designed to detect the laser beam emitted by rotating lasers. 2. 2 Features The detector can be employed as a handheld tool or may be mounted on the measuring staff, telescopic staff or on other leveling staffs, wooden battens or frames etc. Items supplied 1 PRA 20 laser detector 1 PRA 20 operating instructions 2 batteries (size AA cells) 3. [. . . ] - Measurements taken through panes of glass or other objects may be inaccurate. 4. 3. 1 Electromagnetic compatibility Although the tool complies with the strict requirements of the relevant guidelines, Hilti cannot entirely rule out the following possibilities: - The tool may cause interference to other equipment, e. g. - The tool may be subject to interference caused by powerful radiation, which can then lead to incorrect operation. Check the readings for plausibility when measuring in these conditions or if you are unsure of the results. 5. Getting started -NOTEOnly the batteries recommended by Hilti may be used to power the tool. 3 6. Do not mix batteries of different types or batteries from various manufacturers. 7. Hilti calibration service We recommend that the rotating laser and detector are checked by the Hilti calibration service at regular intervals in order to verify its reliability in accordance with standards and legal requirements. 6. Care and maintenance 8. 1 Cleaning and drying Use only a clean, soft cloth for cleaning. If necessary, slightly moisten the cloths with pure alcohol or a little water. - NOTE ­ Do not use any other liquids as these may damage the plastic parts. This is particularly important in winter or summer, especially if the equipment is kept inside a vehicle (storage temperatures: -30°C to +60°C / -22°F to +140°F). Check the accuracy of the equipment before it is used after a long period of storage or transportation. 8. 3 Transportation Use either the original Hilti cardboard box or packaging of equivalent quality for transporting or shipping your equipment. - NOTE Always remove the batteries before shipping the tool. 6. 1 Switching the tool on Press the ON / OFF key. 6. 2 Working with the laser detector The PRA 20 laser detector can be used within an area up to 400m in diameter. Mount the PRA 20 detector securely on the telescopic staff or leveling staff and switch it on by pressing the on / off key. Set the desired sensitivity by pressing the laser plane detection tolerance selection key. Optional settings: Use the audible signal setting key to select the desired volume level. Adjust the signal volume by pressing this key repeatedly until the desired volume is set (normal / loud / off). The laser beam is indicated by visible and audible signals. 4 9. [. . . ] Additional claims are excluded, unless stringent national rules prohibit such exclusion. In particular, Hilti is not obligated for direct, indirect, incidental or consequential damages, losses or expenses in connection with, or by reason of, the use of, or inability to use the product for any purpose. Implied warranties of merchantability or fitness for a particular purpose are specifically excluded. For repair or replacement, send the product and / or related parts immediately upon discovery of the defect to the address of the local Hilti marketing organization provided. [. . . ]