8-1. REFRIGERANT COLLECTING (PUMP DOWN)
:KHQUHORFDWLQJRUGLVSRVLQJRIWKHLQGRRURXWGRRUXQLWSXPSGRZQWKHV\VWHPIROORZLQJWKHSURFHGXUHEHORZVRWKDWQRUHIULJHU
DQWLVUHOHDVHGLQWRWKHDWPRVSKHUH
17XUQRIIWKHSRZHUVXSSO\FLUFXLWEUHDNHU
2&RQQHFWWKHORZSUHVVXUHYDOYHRQWKHJDXJHPDQLIROGWRWKHFKDUJHSOXJORZSUHVVXUHVLGHRQWKHRXWGRRUXQLW
3&ORVHWKHOLTXLGVWRSYDOYHFRPSOHWHO\
46XSSO\SRZHUFLUFXLWEUHDNHU
:KHQSRZHULVVXSSOLHGPDNHVXUHWKDW³&(175$//<&21752//('´LVQRWGLVSOD\HGRQWKHUHPRWHFRQWUROOHU,I³&(1
75$//<&21752//('´LVGLVSOD\HGWKHUHIULJHUDQWFROOHFWLQJSXPSGRZQFDQQRWEHFRPSOHWHGQRUPDOO\
6WDUWXSRIWKHLQGRRURXWGRRUFRPPXQLFDWLRQWDNHVDERXWPLQXWHVDIWHUWKHSRZHUFLUFXLWEUHDNHULVWXUQHGRQ6WDUWWKH
SXPSGRZQRSHUDWLRQWRPLQXWHVDIWHUWKHSRZHUFLUFXLWEUHDNHULVWXUQHGRQ
53HUIRUPWKHUHIULJHUDQWFROOHFWLQJRSHUDWLRQFRROLQJWHVWUXQ
3XVKWKHSXPSGRZQ6:3VZLWFKSXVKEXWWRQW\SHRQWKHFRQWUROERDUGRIWKHRXWGRRUXQLW7KHFRPSUHVVRUDQGYHQWLODWRUV
LQGRRUDQGRXWGRRUXQLWVVWDUWRSHUDWLQJUHIULJHUDQWFROOHFWLQJRSHUDWLRQEHJLQV/('DQG/('RQWKHFRQWUROERDUGRI
WKHRXWGRRUXQLWDUHOLW
2QO\SXVKWKHSXPSGRZQ6:3VZLWFKLIWKHXQLWLVVWRSSHG+RZHYHUHYHQLIWKHXQLWLVVWRSSHGDQGWKHSXPSGRZQ6:3
VZLWFKLVSXVKHGOHVVWKDQPLQXWHVDIWHUWKHFRPSUHVVRUVWRSVWKHUHIULJHUDQWFROOHFWLQJRSHUDWLRQFDQQRWEHSHUIRUPHG
:DLWXQWLOWKHFRPSUHVVRUKDVEHHQVWRSSHGIRUPLQXWHVDQGWKHQSXVKWKHSXPSGRZQ6:3VZLWFKDJDLQ
6)XOO\FORVHWKHEDOOYDOYHRQWKHJDVSLSHVLGHRIWKHRXWGRRUXQLWZKHQWKHSUHVVXUHJDXJHRQWKHJDXJHPDQLIROGVKRZV
WR03D>*DXJH@DSSUR[WRNJIFPðDQGTXLFNO\VWRSWKHDLUFRQGLWLRQHU
%HFDXVHWKHXQLWDXWRPDWLFDOO\VWRSVLQDERXWPLQXWHVZKHQWKHUHIULJHUDQWFROOHFWLQJRSHUDWLRQLVFRPSOHWHG/('RII
/('OLWEHVXUHWRTXLFNO\FORVHWKHJDVEDOOYDOYH+RZHYHULI/('LVOLW/('LVRIIDQGWKHXQLWLVVWRSSHGRSHQWKH
OLTXLGVWRSYDOYHFRPSOHWHO\FORVHWKHYDOYHFRPSOHWHO\DIWHUPLQXWHVRUPRUHKDYHSDVVHGDQGWKHQUHSHDWVWHS52SHQ
WKHJDVEDOOYDOYHFRPSOHWHO\
,IWKHUHIULJHUDQWFROOHFWLQJRSHUDWLRQKDVEHHQFRPSOHWHGQRUPDOO\/('RII/('OLWWKHXQLWZLOOUHPDLQVWRSSHGXQWLOWKH
SRZHUVXSSO\LVWXUQHGRII
1RWHWKDWZKHQWKHH[WHQVLRQSLSLQJLVYHU\ORQJZLWKDODUJHUHIULJHUDQWDPRXQWLWPD\QRWEHSRVVLEOHWRSHUIRUPDSXPS
GRZQRSHUDWLRQ,QWKLVFDVHXVHUHIULJHUDQWUHFRYHU\HTXLSPHQWWRFROOHFWDOORIWKHUHIULJHUDQWLQWKHV\VWHP
77XUQRIIWKHSRZHUVXSSO\FLUFXLWEUHDNHUUHPRYHWKHJDXJHPDQLIROGDQGWKHQGLVFRQQHFWWKHUHIULJHUDQWSLSHV
Warning:
When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.
,IWKHUHIULJHUDQWSLSHVDUHGLVFRQQHFWHGZKLOHWKHFRPSUHVVRULVRSHUDWLQJDQGWKHVWRSYDOYHEDOOYDOYHLVRSHQWKH
pressure in the refrigeration cycle could become extremely high if air is drawn in, causing the pipes to burst, personal
injury, etc.