Instrumentation friction discs or clutch surfaces should be kept free of what substance?

Instrumentation friction discs or clutch surfaces should be kept free of water because the presence of water can significantly impair the operation of these components. Water can cause corrosion, reduce the friction properties, and lead to slippage between surfaces. This degradation can impact the reliability and performance of the equipment, potentially leading to failures or malfunctions in waste water collection systems, where precision in operation is crucial.

Maintaining dry conditions on friction surfaces ensures optimal performance, as friction is necessary for the proper engagement and disengagement of clutch systems. It also enhances the lifespan of the components, as moisture can accelerate wear and tear.

While oil, debris, and dust are also undesirable on these surfaces, water is particularly detrimental because it can alter the friction dynamics essential for the operation of couplings and clutches.