ʻO MD, D, DG a me DF ka nui o nā ʻāpana nui ʻehā: stator, rotor, bearing a me shaft seal;
ʻāpana stator;ʻo ia ka hapa nui o ka ʻāpana suction, ʻāpana waena, ʻāpana hoʻokuʻu, alakaʻi vane a pēlā aku.Hoʻopili ʻia kēlā mau ʻāpana e nā bolts tension e hana i kahi lumi hana.He paepae ka puka komo o ka pamu D a he kupo kona puka puka;ʻoiai ʻo ka puka a me ka puka komo o ka DG e kū pololei.
ʻO ka ʻāpana Rotor: ʻo ia ka nui o ka shaft, impeller, balance disc, bushing a pēlā aku.Hoʻouna ka lāʻau i ka mana i ka impeller e hana ia;hoʻohana ʻia ka disc kaulike e kaulike i ka ikaika axial;ua kau ʻia ka lāʻau me kahi mea hiki ke hoʻololi ʻia e pale ai.
ʻO ka ʻāpana lawe: ʻo ia ka nui o ke kino o ka noho ʻana, ka lawe ʻana, ka ʻili ʻana a pēlā aku.Kākoʻo ʻia nā ʻaoʻao ʻelua o ka rotor e ʻelua mau pahu huila hoʻokahi-Tow i kau ʻia i loko o ke kino lawe.Lubricated nā bearings me ka momona.
Shaft seal: ua hoʻopaʻa ʻia ka sila packing palupalu, ʻo ia ka mea nui o ka 'packing box body, packing, water fender a me nā ʻāpana ʻē aʻe ma ka ʻaoʻao inlet wai a me ka hood huelo.Hoʻopihaʻia ka wai me kahi kaomi i loko o ka lua sila no ke kumu o ka sila wai, ka hoʻoluʻu a me ka lubrication.ʻO ka wai no ka sila wai o ka pāpa D mai ka wai kaomi i loko o ka pama a ʻo ka wai o MD, DF a me DG e pā mai ka wai o waho.Ma waho aʻe, hiki i nā pāpaʻi DG a me DF ke hoʻohana i ka sila mechanical a float ring sila..
Hoʻokele: hoʻokele pololei ʻia ka pama e ke kaʻa ma o ka hoʻohui ʻana i ka elastic, e hoʻohuli ʻia i ka uaki ke ʻike ʻia mai ka hopena kaʻa.