Li-switch tsa khatello ea HW18 li sebelisetsoa ho laola khatello ea tanka lipakeng tsa boleng bo habeli bo behiloeng esale pele ho li-compressor tsa moea tse tsamaisoang ka motlakase tsa mekhahlelo e 3. Li fumaneha ka valve ea unloader, e thibelang li-compressor ho tetebela ha li ntse li jaroa, 'me e fumaneha ka konopo ea On-Off bakeng sa ho khaola compressor ka letsoho.

Li-switch tsa khatello ea HW19 li sebelisoa ho laola khatello ea tanka lipakeng tsa boleng bo habeli bo behiloeng esale pele ho li-compressor tsa moea tse tsamaisoang ka motlakase. Li fumaneha ka valve ea unloader, e thibelang li-compressor ho qala tlas'a mojaro 'me e fumaneha ka konopo ea On-Off bakeng sa ho khaola compressor ka letsoho.

Li-switch tsa khatello ea HW20 li sebelisoa ho laola khatello ea tanka lipakeng tsa boleng bo habeli bo behiloeng esale pele ho li-compressor tse nyane tsa moea tse tsamaisoang ka motlakase. Li na le valve ea unloader, li ka thibela li-compressor ho qala tlas'a mojaro. Thea lever ea ho tima ka boiketsetso bakeng sa ho khaola komoresora ka letsoho. Mekhoa ea manifold ea kou e le 'ngoe le ea li-port tse 'ne lia fumaneha tse fanang ka ho kenya li-valve le li-gauge habonolo.