IndexHDK-CNG_EN_03_2016 53IndexAAccident prevention regulations............................... 16Address, manufacturer .............................................. 8Adsorption, explanation ........................................... 21Auxiliary heater ........................................................ 22BBuild no. ............................................................ 41, 57Bypass line .............................................................. 29CChangeover valueFor dewpoint-sensing control............................... 21Changing cycle modeexplanation .......................................................... 36Check valvesmaintenance interval ........................................... 43Compressed air ....................................................... 11Compressor synchronisation ............................. 30, 36option ................................................................... 22Connection lines ...................................................... 29Controldewpoint-sensing................................................. 22ControllerMenu diagram...................................................... 61Conversions............................................................. 13Cycletype and duration ................................................. 33Cycle mode changeexplanation .......................................................... 36DDanger notesDanger! ................................................................ 10Danger warning, maintenance ................................. 43Date of manufacture .................................................. 4Dehumidificationexplanation .......................................................... 21Dew pointswitching value .............................................. 36, 37Dewpoint-sensing control .................................. 22, 36Documentation, technical ........................................ 55Dryermaintenance interval ........................................... 42Drying agentmaintenance interval ........................................... 43service life............................................................ 49Drying agentsstorage................................................................. 18Dust generation ....................................................... 49Dust mask................................................................ 13Dust sievesmaintenance interval............................................ 43EEar protection .......................................................... 37Electrical circuit diagram .......................................... 30Expansion phaseExplanation .......................................................... 21Eye protection.......................................................... 13FFabrication no. ........................................................... 4HHazard areas ........................................................... 14IInstallation area ....................................................... 17Installation site, requirements .................................. 17LLiability....................................................................... 9Lifting gear ............................................................... 16Limits, permissible ................................................... 37MMachine damage, prevention .................................. 11Machine passport ...................................................... 4Mains voltage .......................................................... 56MaintenanceCheck differential pressure .................................. 45check valves ........................................................ 47dam pressure....................................................... 44dust sieve ............................................................ 48replacement of filter element ............................... 46sensor .................................................................. 46solenoid valves .................................................... 47Maintenance contract .............................................. 41Maintenance, danger warnings ................................ 43Mediaaggressive ............................................................. 9Modifications on the dryer........................................ 13