Burkert 8681 - Closing the Housing

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Opening and Closing the Housing
8.2.2 Closing the housing
If necessary, clean the seal contour of the seal and of the hood and lightly lubricate it using a silicone
grease.
Caution:
Donotuseanypetroleum-basedorsyntheticlubricants(exceptforsiliconegrease)!
Procedure:
→ Put the plastic hood on the lower part such that the inner "lugs" are positioned over the locking grooves
and the external sealing lugs are positioned almost over each other. Press the hood completely over the
seal(O-ring)ofthelowerpart–seealso“Fig.11”.
→ Turnthehoodbyapprox.1.5cmclockwise(meaninguntilthesealinglugsarepositionedovereach
other).
→ If necessary, apply a lead seal to prevent opening without a tool.
The hood must be lead-sealed in the potentially explosive atmosphere to prevent the housing
from being opened without a tool!
Sealing lug
(onlowerhousingpart)
Lockinggroove(3x)
O-ring to seal
the lower part
Fig. 11: Sealing lug and locking grooves
english
Control Head Type 8681