Thermo
KingCompressors
The most significantpan of therefrigeration
systemis the
compressorlts function;sto pumplow pressuregas
outof
theevaporatorsothata rapidrnd continuousboilingaction
i. n)rjnll]in(d in rh<e!:rpu':rrurLUil.Thc los nr(,\ure garrs
cornpressedand forcedinto thecondensercoil wh€re
il is
cooledby air passing
through the coil. The high pressure
andrcduced
temperaturecausesn 10liquety(condense).
The conrpr€sso.scovered
by this nunual arereciprocating
piston type pumps,conslrucledmainly of casraluminum.
The aluminum alloy pistons md casr iron sleevesar€
mnchincdto closclolcrances
to thatno ringsareneededlo
fxl Ihr ti\ron r,' Ih( cylind(r$all lhe conrpr(\\oris
cquippld wirh ahighnickelalloyductileiron crankshafr.
To
prevenl
leakagenroundthecrankshafi,the
compressorisfit-
ted$ith arotrry typcrcfrigcrarionseal.
Prcssurizedlubrica(ionis piovidcd to thc conn€ctingrods
.rndblarinls by agcroror
oil punrp
in the
compr€ssorbody.
Thcoil lcvelin thc
compressorcan
bcinspectedthmughrhe
oil n\.1 'ithr gl.\. inthe
hod) Srncerh<r(frip(rJrionsls-
tcm ir scaled.il shouldbe necessrryto rdd oil only if thcre
hrs bcen r largc .efrigcration leak in the system.or if a
mnior iten in $c rcftgcration syslem,
suchasanevrporr-
ld coil or acondcnsercoilhasbeenreplaced.
A springloadeddisch.fg€valvernd springbadedvalve
crge
providc
pressurereliefif liquidreftSerant
ententhe
compressor.Theentirecagelittsnnd
prevems
bre*ing or
deformingolthe
vrlves.
When
any
repairs
or replacementsareto bemde on thc
conrpressor.it is
very
i ponmr
th
thepa suscdaru
clcan
andnol nickedor scratched.Duringdis.Nsembly,
pans
shouldbcclcancd
nnd
;Dspecledi
andif theyaretobeused
in rcasscmbly.
theyshouldbewnpped
in a cleanclothto
prcvent
marringthesurfaces.Oil .rllpanswithcompressor
oil duringrssembly,
andbesuretheyareinslalledin the
snne
posirion
lhcy
were
inbcforedi$ssembly.
NOTE: Whenrcplaccnentpatt arc requircd, wc rccom-
nend usingonq FoctoryApprured Ther o King Rcplaee-
ment Parls. Onlt Gentine Thenno King Replacencnt
Po s deliverthenliabilio, p.oductirit!, qualitr, and per-
fon nncc yr'rc co'neto erpect
fron Thcrno King.
NOTE:MostoI theot'erhaulprycedures
lor theconprcs-
so^ coveredin thisnanual are thesane. Photogruphsof
anX426
comprcssorare usedin thk nanual asexamplcs.
Other illustutions arc pmided in eascswherethephoto-
Cmphk notapplbable.
