Airwell SWS 1602 HFС 407C [81/82] Dismantling demolition and scrapping
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Airwell SWS 1602 HFС 407C [81/82] Dismantling demolition and scrapping

Airwell SWS 2502 HFС 134a [81/82] Dismantling demolition and scrapping
Page 80
DDiissmmaannttlliinngg,, DDeemmoolliittiioonn aanndd SSccrraappppiinngg
12 DISMANTLING, DEMOLITION
AND SCRAPPING
DDuurriinngg tthhee ddrraaiinniinngg ooff tthhee rreeffrriiggeerraattiioonn cciirr--
ccuuiittss,, ddoo nnoott lleett tthhee rreeffrriiggeerraanntt oovveerrffllooww iinn
tthhee ssuurrrroouunnddiinngg aattmmoosspphheerree..
TThhee cciirrccuuiitt mmuusstt bbee ddrraaiinneedd uussiinngg ssuuiittaabbllee
rreeccoovveerryy eeqquuiippmmeenntt..
DDoo nnoott ddiissppeerrssee tthhee wwaassttee ooiill ooff tthhee ccoomm--
pprreessssoorrss iinn tthhee eennvviirroonnmmeenntt,, ssiinnccee iitt ccoonn--
ttaaiinnss ssoommee ddiissssoollvveedd rreeffrriiggeerraanntt..
FFoorr tthhee ddiissppoossaall,, ccoonnttaacctt tthhee ccoommppeetteenntt aauutthhoorriittyy ffoorr
iinnffoorrmmaattiioonn..
Unless otherwise specified, the maintenance opera-
tions listed below may be carried out by any trained
maintenance operator.
12.1 Generalities
Open each line that supplies the unit, including the
ones of control circuits. Make sure that all discon-
necting switches are secured in the off position. The
power cables can be disconnected and disassem-
bled. Refer to Chapter 4 for the position of connec-
tion points.
Remove all the refrigerant from the refrigeration cir-
cuits of the unit and store it in suitable containers, us-
ing a recovery unit. If its characteristics have re-
mained the same, the refrigerant can be used again.
Contact the competent authority to obtain informa-
tion about disposal. In
NNOO
event shall the refrigerant
be discharged into the atmosphere. The oil in each
refrigeration circuit must be drained and collected in-
to a suitable container; then it shall be disposes of in
conformity with local regulations that apply to the
disposal of waste lubricants. Any oil spillage must be
recovered and disposed of in like manner.
Isolate the unit’s heat exchangers from the external
hydraulic circuits and drain the heat exchange sec-
tions of the plant. If no isolation valves are installed
on the cooler it might be necessary to drain the com-
plete hydronic system.
IIff nnoo sshhuuttooffff vvaallvveess hhaavvee bbeeeenn pprroovviiddeedd,, iitt
mmaayy bbee nneecceessssaarryy ttoo ddrraaiinn tthhee wwhhoollee ppllaanntt..
IIff aa ggllyyccoolleedd ssoolluuttiioonn oorr aa ssiimmiillaarr fflluuiidd hhaass
bbeeeenn uusseedd iinn tthhee hhyyddrraauulliicc cciirrccuuiittss,, oorr iiff
cchheemmiiccaall aaddddiittiivveess hhaavvee bbeeeenn aaddddeedd ttoo tthhee
cciirrccuullaattiinngg wwaatteerr,, tthhee cciirrccuullaattiinngg fflluuiidd MMUUSSTT
bbee ddrraaiinneedd iinn aa pprrooppeerr wwaayy..
FFoorr NNOO rreeaassoonn sshhaallll aa cciirrccuuiitt ccoonnttaaiinniinngg
ggllyyccoolleedd wwaatteerr oorr aa ssiimmiillaarr ssoolluuttiioonn bbee ddiiss--
cchhaarrggeedd ddiirreeccttllyy iinnttoo tthhee ddrraaiinnss oorr ssuurrffaaccee
wwaatteerrss..
After draining operations, the piping of the hydraulic
networks can be disconnected and disassembled.
Once they have been disconnected as specified, the
packaged units can be disassembled in a single
piece. First of all, disassemble the anchoring screws
and then lift the unit from the position of installation,
and hook it to the lifting points provided, using suit-
able lifting equipment.
To this end, refer to Chapter 4 for the installation of
these appliances, to Chapter 8 for their weights and
Chapter 3 for handling.
The units that, once disconnected, cannot be re-
moved in a single piece, must be dismantled on site;
in this case, be very careful with the weight and han-
dling of every single component.
It is always advisable to dismantle the units following
the installation steps, but in reverse.
SSoommee rreessiidduueess ooff ooiill,, ggllyyccoolleedd wwaatteerr oorr ssiimm--
iillaarr sso
olluuttiioonnss mmaayy rreemmaaiinn iinn cceerrttaaiinn ppaarrttss ooff
tthhee uunniitt.. TThheessee rreessiidduueess mmuusstt bbee rreeccoovveerreedd
aanndd ddiissppoosseedd ooff aaccccoorrddiinngg ttoo tthhee pprrooccee--
dduurreess ssppeecciiffiieedd aabboovvee..
It is very important to ensure that, while a component
of the unit is being removed, all the others are prop-
erly supported.
UUssee oonnllyy lliiffttiinngg mmeeaannss ooff aaddeeqquuaattee ccaappaaccii--
ttyy..
Once disassembled, the components of the unit can
be disposed of in conformity with current regula-
tions.
Manuale SWS-SWR EN2.qxp 19/11/06 11:21 Pagina 80

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