Figure 11-4 Position of the pressure compensation element on the aluminum housing (view from
below)
Excess pressure or low pressure inside the housing
The following errors could be responsible for excess pressure or low pressure in the housing:
Error Solution
The pressure compensation element is contaminated. Clean the pressure compensation element. You can find in‐
formation on this in section "Cleaning (Page 145)".
The pressure compensation element is defective. Replace the pressure compensation element. Pay attention
to the correct mounting.
Additional information
Section "Tools and tightening torques (Page 186)"
Compact Field Unit in the housing for use in a hazardous area
11.3 Configuration with SIMATIC CFU with aluminum housing
SIMATIC CFU
146 Commissioning Manual, 08/2019, A5E39252870-AD
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