22 User Guide2 Loosen the head adapter by a quarter turn. This should allow the housing to rotate freely.3 Position the housing in a way that is optimal to your location.4 Once the housing is in the proper position, re-tighten the head adapter.5 Re-tighten the head adapter security screw to secure the head adapter.Rotating the HMIELECTROSTATIC DISCHARGESElectronic components are sensitive to electrostatic discharges.Before performing any connection, operators shall make sure that they have discharged allstatic electricity from their body before touching electronic components.When the head unit is installed, it is possible to rotate its HMI in one of four different positions at 90°intervals.To rotate the HMI:1 Make sure that the instrument is powered off and that the M4 hex head locking screws are screwedin (see Figure 10).2 Unscrew the housing cover on the HMI side (hazardous area warnings must be heeded; see “Safety”on page 1).CAUTIONDo not grab the instrument by its threaded interface. Thread edges are sharp andconstitute a risk of personal injury (see Figure 20 on page 29).3 Pull the HMI board away from the communication board.—Figure 11 Pulling out the HMI boardHMI boardCommunication board4 Rotate the HMI board according to the new desired position.