The pointer of a pressure gauge sat on the wrong side of the stop pin

In the process of starting up a new baghouse dust collection system, we found this interesting pressure gauge on the PD blower; the blower was not turned on yet, but its pointer was sitting on the other side of the stop pin. Nobody knew how this happened and it had to be replaced.

If not carefully checked, the error was hard to spot.

Figure 1 Pointer of the pressure gauge sits on the wrong side of the stop pin

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