GB - 4Table of contentAnnex A .....................................................................................................................37A.1 Overload characteristic ..................................................................................................... 37A.2 Overload protection in the lower speed range ............................................................... 37A.3 Calculation of the motor voltage ...................................................................................... 38A.4 Maintenance ....................................................................................................................... 38A.5 Storage ............................................................................................................................... 38A.5.1 Cooling circuit ...................................................................................................................... 39Annex B .....................................................................................................................40B.1 Certification ........................................................................................................................ 40B.1.1 CE Marking .......................................................................................................................... 40B.1.2 UL Marking .......................................................................................................................... 40Annex C .....................................................................................................................42C.1 Installation of water-cooled units..................................................................................... 42C.1.1 Heat sink and operating pressure ........................................................................................ 42C.1.2 Materials in the cooling cicuit ............................................................................................... 42C.1.3 Requirements on the coolant ............................................................................................... 43C.1.4 Connection to the cooling system ........................................................................................ 44C.1.5 Coolant temperature and moisture condensation ................................................................ 44C.1.6 Coolant heating depending on power loss and flow rate with water .................................... 46C.1.7 Typically fall of pressure depending on the rate of flow ....................................................... 46Annex D .....................................................................................................................47D.1 Changing the response threshold of the braking transistor ......................................... 47