off monitor function for monitoring  changes in the working wheel distance  during  machining  process  and  stopping the machine if necessary.  2.2.17 The machine shall be equipped with a  measuring device for working wheels  for measuring the flatness of the  wheels and the parallel gap.  2.2.18 Machine  shall  have  the  required  accessories  (including  the  cooling  unit) for cooling of the grinding liquid  and cooling of the working wheels.  Cooling (refrigerating) unit shall have $_{●}$  the adjustable temperature  controlling and monitoring, $_{●}$  thermostat to control and  maintain constant fluid output  temperature.  2.2.19 Cooling lubricant flow-rate shall be  adjustable.  2.2.20 Machine  shall  have  an  external  filtration system for the coolant with  centrifuge at continuous circulation. 2.2.21 Machine  shall  have  a  cleaning  device/part for cleaning of the working  wheels.  2.2.22 Machine shall have the protection to  prevent  parameters  from  changing  through different access levels for at  least 2 users.  2.2.23 Machine shall have individual input  programming  of  the  process- determining cycle steps.  August 2020 c4f_annexiitechspeciiitechoffer_en.doc  Page 29 of 49 