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Replacement of Components and Modules
24 REPLACEMENT OF COMPONENTS AND
MODULES
If components or modules need to be replaced for maintenance or service reasons, please observe the fol-
lowing notes and descriptions.
Devices that are used in the potentially explosive atmosphere may only be repaired by the
manufacturer!
24.1 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 energised
state!
WARNING!
Risk of injury due to electric shock!
` Beforereachingintothesystem(exceptfortheTeachprocedureinanon-explosiveatmosphere)switch
othepowersupplyandsecureittopreventrestarting!
` Observeapplicableaccidentpreventionandsafetyregulationsforelectricalequipment!
Risk of injury from high pressure!
` Beforelooseninglinesandvalves,turnothepressureandventthelines.
Risk of injury due to improper maintenance work!
` Maintenance work may be carried out by trained technicians only 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.
NOTE!
IP65/IP67protection
During all work steps, make sure that IP65 / IP67 protection is once again ensured for the control head
when used as intended!
Openingandclosingthecontrolhead
Duringallworkwhichrequiresopeningandclosingofthecontrolhead,alsoobservethenotesandcom-
ments in chapter “8OpeningandClosingtheHousing”!
english
Control Head Type 8681