Procédure de maintenance de la pompe à palettes sèches Becker

Procédure d'entretien de la pompe à palettes sèches Becker

[@nabilmarsel8792]

Hello, I want to ask you a question about that red paint about its role?
Because I have two pump one of them don't have that paint on it.

[@believeinyourdreams361]

THANKS