MAINTENANCE AND REPAIR
Service +49(0)391 2514666 02/2017 Instruction Manual HMP LFGpro – en
Cleaning
Care must be exercised when measuring to ensure there is no higher-than-
normal dirt induced friction between the drop-weight and the guide tube;
otherwise, incorrect data will be measured.
■
Thoroughly clean the LWD after every use.
■
Wipe the guide tube with soft cloth slightly soaked in oil.
■
Then, move the drop-weight up and down on the guide tube.
Do not use grease to clean the guide tube.
The load plate must not be immersed in water; otherwise the sensor
could be damaged.
Calibrating
The company of HMP is an authorised testing institution and calibration
laboratory within the meaning of
»Technical Test Code for Soil and Rock in
Road Construction TP BF-StB Teil B 8.4 / Issue 2016«.
The loading mechanism and the settlement measuring instrument of the LWD
were calibrated prior to shipment ex works.
Calibration ensures both, the function of the equipment and compliance with
the specifications for the loading mechanism and for the settlement
measuring instrument.
Re-calibration is required at least annually.
Also, re-calibration is essential after any repair of the LWD.
The company of HMP has calibrated (DKD-supervised) instrumentation used
to conduct force and distance calibrations. In addition, repairs necessary
might be carried out.
The user should check the height of fall indicated in the calibration record, at
intervals of three months.
Hotline
HMP Magdeburger Prüfgerätebau GmbH
Bülstringer Straße 6
D-39126 Magdeburg
Tel.: (03 91) 2 51 46 66
(03 91) 2 51 46 67
Fax: (03 91) 2 51 46 68
E-Mail: info@hmp-online.de
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