An organic electroluminescent display panel includes more than one organic electroluminescent element having a first display electrode, one or more organic functional layers including a light-emitting layer formed of an organic compound, and a second display electrode, which are sequentially layered in that order. A deflection correction system includes a control unit, a displacement sensor, at least one pressure cylinder, and a pressure sensor. A resistance heater subassembly is removeable to enable washdown. Shape of bar is such that its effective movement cannot occur when padlocks are closed.