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Maintenance, troubleshooting
23 MAINTENANCE, TROUBLESHOOTING
23.1 Safety instructions
DANGER!
Danger of explosion in a potentially explosive atmosphere (only in the event of a fault as zone 2)!
` Opening the hood or the housing in a potentially explosive atmosphere is only allowed in a not ener-
gised state!
WARNING!
Risk of injury due to electric shock!
` Beforereachingintothesystem(exceptfortheTeachprocedureinanon-explosiveatmosphere)switch
othepowersupplyandsecureittopreventrestarting!
` Observeapplicableaccidentpreventionandsafetyregulationsforelectricalequipment!
Risk of injury from high pressure in the system!
` Beforelooseninglinesandvalves,turnothepressureandventthelines.
Risk of injury from improper maintenance!
` Maintenance may only be carried out by trained technicians and with the appropriate tools!
Risk of injury from unintentional activation of the system and uncontrolled restart!
` Secure system against unintentional activation.
` Following maintenance, ensure a controlled restart.
english
Control Head Type 8681