He nui nā mea pāʻani DIY e ʻike i nā huahana papa like ʻole ma ka mākeke e hoʻohana i nā ʻano like ʻole o nā kala PCB.
ʻO nā kala PCB maʻamau he ʻeleʻele, ʻōmaʻomaʻo, uliuli, melemele, poni, ʻulaʻula, a me ka ʻeleʻele.
Ua hoʻomohala kekahi mau mea hana keʻokeʻo, ʻulaʻula a me nā kala like ʻole o PCB.

I ka manaʻo kuʻuna, ʻeleʻele PCB mea e hoʻonoho ʻia ma ka hopena kiʻekiʻe, ʻoiai ʻulaʻula, melemele, a me nā mea ʻē aʻe, ua hoʻolaʻa ʻia ka haʻahaʻa haʻahaʻa, pololei?

ʻO ka papa keleawe o ka PCB me ka ʻole o ka pale kūʻai kūʻai kūʻai oxidize maʻalahi ke ʻike ʻia i ka ea

ʻIke mākou ʻo ka mua a me ke kua o ka PCB he mau papa keleawe.I ka hana ʻana o ka PCB, e loaʻa i ka papa keleawe kahi ʻili maʻemaʻe a pale ʻole ʻia ʻaʻohe mea i hana ʻia e ka hoʻohui a i ʻole ka unuhi ʻana.

ʻOiai ʻaʻole ikaika nā mea kemika o ke keleawe e like me ka aluminika, ka hao, ka magnesium, akā ma ke alo o ka wai, ʻoi aku ka maʻalahi o ka hoʻopili ʻana o ke keleawe a me ka oxygen;
Ma muli o ka loaʻa ʻana o ka oxygen a me ka mahu wai i ka lewa, e loaʻa ka ʻili o ke keleawe maʻemaʻe i ka hopena oxidation ma hope koke o ka hoʻopili ʻana me ka lewa.

E like me ka mānoanoa o ke keleawe papa i loko o ka PCB mea lahilahi, ka oxidized keleawe e lilo i ilihune conductor o ka uila, ka mea e hoʻopōʻino loa i ka uila hana o ka PCB holoʻokoʻa.

No ka pale ʻana i ka oxidation keleawe, e hoʻokaʻawale i nā ʻāpana welded a me nā ʻāpana ʻole o ka PCB i ka wā wili, a no ka pale ʻana i ka ʻili o ka PCB, ua hoʻomohala nā mea ʻenehana i kahi uhi kūikawā.
Hiki ke hoʻopili maʻalahi ka uhi ʻana i ka ʻili o ka PCB, e hana ana i kahi pale pale o kekahi mānoanoa a pale i ke keleawe mai ka lewa.
Kapa ʻia kēia ʻāpana o ka uhi ʻana i ka solder resistance layer a ʻo ka mea i hoʻohana ʻia ʻo ia ka pena pale kūʻai.

No ka mea ua kapa ʻia ʻo ia he pena, pono nā waihoʻoluʻu ʻokoʻa.
ʻAe, ʻaʻole hiki ke kala a me ka ʻike ʻole ka pena kūʻai kūʻai mua, akā pono e paʻi pinepine ʻia ka PCB ma ka papa i mea e maʻalahi ai ka hoʻoponopono ʻana a me ka hana ʻana.

Hiki ke hōʻike wale ʻia ke kala ʻula PCB, no laila inā i hana ʻia, hoʻoponopono a kūʻai ʻia paha, ʻaʻole maikaʻi ka helehelena.
No laila hoʻohui nā ʻenekinia i nā kala like ʻole i ka pena pale kūʻai e hana i nā PCB ʻeleʻele a ʻulaʻula a polū paha.

 
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Paʻakikī nā PCB ʻeleʻele e ʻike i ka uwea, ʻo ia ka paʻakikī o ka mālama ʻana

Mai kēia manaʻo, ʻaʻohe mea pili i ke kala o PCB me ka maikaʻi o ka PCB.
ʻO ka ʻokoʻa ma waena o ka PCB ʻeleʻele a me ka PCB uliuli, ka PCB melemele a me ka PCB kala ʻē aʻe e waiho ana i ke kala like ʻole o ka pena kūʻai kūʻai i ka palaki.

Inā hoʻolālā ʻia ka PCB a hana ʻia e like me ka like, ʻaʻohe hopena o ke kala i ka hana, ʻaʻole hoʻi e loaʻa i ka hopena i ka wela.

No ka PCB ʻeleʻele, ua aneane uhi ʻia kona uea ili, ka hopena i nā pilikia nui no ka mālama ʻana ma hope, no laila he kala ʻaʻole kūpono ke hana a hoʻohana.

No laila, i nā makahiki i hala iho nei, hoʻololi hou ka poʻe, haʻalele i ka hoʻohana ʻana i ka pena pale kūʻai ʻeleʻele, a hoʻohana i ka ʻōmaʻomaʻo ʻeleʻele, ʻeleʻele ʻeleʻele, ʻeleʻele uliuli a me nā pena pale kūʻai kūʻai ʻē aʻe, ʻo ke kumu e hoʻomaʻamaʻa i ka hana ʻana a me ka mālama ʻana.

I kēia manawa, maopopo mākou i ka pilikia o ka kala PCB.
ʻO ke kumu o ka ʻike ʻia ʻana o ka "elele kala a haʻahaʻa haʻahaʻa" no ka mea makemake nā mea hana e hoʻohana i ka PCB ʻeleʻele e hana i nā huahana kiʻekiʻe, a me nā huahana ʻulaʻula, uliuli, ʻōmaʻomaʻo, melemele a me nā huahana haʻahaʻa haʻahaʻa.

I ka hōʻuluʻulu ʻana, hāʻawi ka huahana i ke ʻano o ke kala, ʻaʻole ke kala e hāʻawi i ka manaʻo i ka huahana.

He aha ka pōmaikaʻi o ka metala makamae e like me ke gula, kālā me PCB?
Akaka ke kala, e kamaʻilio e pili ana i ka metala makamae ma PCB!
ʻO kekahi mau mea hana i ka hoʻolaha ʻana i kā lākou huahana, e haʻi kikoʻī i kā lākou huahana i hoʻohana i ke gula, ka plating kālā a me nā kaʻina hana kūikawā ʻē aʻe.
No laila he aha ka hoʻohana ʻana o kēia kaʻina hana?

Pono ka ʻili o ka PCB i nā mea hoʻoheheʻe, a ʻo kahi ʻāpana o ka papa keleawe e pono e hōʻike ʻia no ka wili.
Kapa ʻia kēia mau ʻāpana keleawe i hōʻike ʻia he mau pads, a ʻo nā pads maʻamau he ʻāpana ʻehā a pōʻai paha a he wahi liʻiliʻi.

Ma luna aʻe, ʻike mākou ua maʻalahi ke keleawe i hoʻohana ʻia i ka PCB, no laila e ʻike ʻia ke keleawe ma ka pad solder i ka lewa i ka wā e hoʻohana ʻia ai ka pena pale kūʻai.

Inā hoʻoheheʻe ʻia ke keleawe ma ka pad, ʻaʻole paʻakikī wale ka weld, akā hoʻonui pū i ka resistivity, e hoʻopilikia nui i ka hana o ka huahana hope.
No laila ua hele mai nā ʻenekinia me nā ʻano ala āpau e pale ai i nā pads.
E like me ka uhi ʻana i ke gula inert metala, uhi kemika i ka ʻili me ke kālā, a i ʻole ka uhi ʻana i ke keleawe me kahi kiʻiʻoniʻoni kemika kūikawā e pale aku ai i ka pili ʻana me ka ea.

ʻO ka pā i hōʻike ʻia ma ka PCB, ʻike pololei ʻia ka papa keleawe.
Pono e pale ʻia kēia ʻāpana i mea e pale ai i ka oxidized.

Mai kēia manaʻo, inā he gula a he kālā paha, ʻo ke kumu o ke kaʻina hana ponoʻī ke pale aku i ka oxidation a pale i nā pads i hiki ai iā lākou ke hōʻoia i ka hopena maikaʻi i ka wā o ke kaʻina hana welding.

Eia nō naʻe, ʻo ka hoʻohana ʻana i nā metala like ʻole e koi i ka manawa mālama a me nā kūlana mālama o ka PCB i hoʻohana ʻia i ka mea kanu hana.
No laila, hoʻohana maʻamau nā hale hana PCB i ka mīkini hoʻopaʻa haʻahaʻa e hoʻopaʻa i ka PCB ma mua o ka pau ʻana o ka hana PCB a me ka hāʻawi ʻana i nā mea kūʻai aku e hōʻoia i ka hiki ʻole o ka pōʻino oxidation i ka PCB a hiki i ka palena.

Ma mua o ka hoʻopili ʻia ʻana o nā ʻāpana i ka mīkini, pono nā mea hana kāleka papa e ʻike i ke ʻano o ka oxidation o PCB, hoʻopau i ka PCB oxidized, a hōʻoia i ka hua o nā huahana maikaʻi.
ʻO ka mea kūʻai hope loa e kiʻi i ke kāleka papa, aia ma o nā ʻano hoʻāʻo, ʻoiai ma hope o ka lōʻihi o ka hoʻohana ʻana, ʻaneʻane hiki wale ka oxidation i loko o ka plug a unplug i nā ʻāpana pili, a ma nā pad a ua welded nā ʻāpana, ʻaʻohe hopena.

No ka mea ʻoi aku ka haʻahaʻa o ke kūʻē ʻana o ke kālā a me ke gula, e hōʻemi anei ka hoʻohana ʻana i nā metala kūikawā e like me ke kālā a me ke gula i ka wela i hana ʻia i ka wā o ka PCB?

ʻIke mākou ʻo ka mea e pili ana i ka waiwai calorific ʻo ke kūpaʻa uila.
Ke kū'ē a me ka conductor pono'ī mea, conductor cross-sectional area, lōʻihi pili.
ʻOi aku ka liʻiliʻi o ka mānoanoa metala ma mua o 0.01 mm, inā hoʻohana ʻia ka OST (organic protective film) i ka mālama ʻana i ka pad, ʻaʻohe mānoanoa keu.
ʻO ke kū'ē i hōʻike ʻia e kēlā ʻano mānoanoa liʻiliʻi he aneane ʻole, a i ʻole hiki ʻole ke helu, a ʻaʻole pili i ka wela.