General
Compressor Repair Techniques
Because of the vanous refrigeration
unir models
a
given
compressor mry
be used on, no aitempt is being made in
this mnnual to show a rcmoval procedure.
This manual
assumes thal the compressor has
been removed
properly
in
cord.rnL( lo thc n'.rintcn.nce
manuil Ior th< Jpprcpri.tc
This mnnual does cot'er the
drive coupling removal and
re-inslallation. Th. illusfations
used rrc typical. your
i'tstallation may vary
frorn whal is shown.
DIRT AND MOISTURE
CAN EASILY RUIN
COMPRESSORS!
Comprcsson arc
assembled at the facrory in special
clean
roonrs wilh fihered.
condilioned dr. Field
conditions
will
nol always allow fnctory clcan repair
arens bu( evcry cffon
should
be taken lo keep rhc comprcssor work
area as clem
as
possible.
Follow thesc tules
1o
protecl
compressoB fron
.
Pump
down thc
system
and recovcr the
refrigeranl in
compliancc
with
Federal, Srare and lolalregularions.
.
Usc
dry
nitrcgcn
lo break the vacuum. This prevcnts
din and noisrure from
geuing
into
rhc conrpressor.
.
Usc
cap
plugs
or lape instead of raSs 1o
covcr compres-
sor
opcnings as soon as vibrasorbcrs or
service valves
arc removed.
Poloyol esrer oil draws in
moisture like I
,ponpc
rnd rJgs
uill
n, rtop
moisture lrom rnrcring
rhc
conrpressor.
.
Rcnovc
all dirt and debris from the conpressor prior
to
.
Work in a cldan.
closed area. Stay rway from
open
doors or windows
that allow din ro blow
in
pans
clean-
ing
areas.
grjnding
areas and bead blasting
machines.
.
Ke€p your
tools and workbench spolless.
Keep
your
hands
as clean as
possible.
On(( rhe compre,,or i, opinfd ro rhe
nro\ph<r(.
!(l
lhe
job
done quickly- Plan ahead.
Have
your pans
and
Only use
chemical solv€nts thrl leave no oily rcsidue.
such as naphtha.
lacquer
(hinner.
or br*e clcaner
to
clean compressor components. Do No. Bead
Blast
compr€ssor components clean.
lfthejob
must b€ inlerrupted. covcr
thc compressor. A
fiesh. clean
piccc
of
plastic
sheeling
wrapped
lightly
around ftecompressor
is best. Clo(h should not be uscd
as
it
does not block moisture-
Bc sure
to use the correct oil to
prevent
contaminalion
Always
leep
your
refrigeration oil capp€d.
A tew
inutes wilh
the cap off crn ruin irl
Do nor dip seal pans
in oil. Conhiners ol oil us€d for
dipping
pan!
sit open and collcct moislure,
drn and
dusl. Insk.d. use
r small. clean oil can dedicated for
use only wilh
tb€ correct oil for the compressor you
drc
Disdrd rlllhc
old O-rings and
gaskets
thar arc exposcd
while working
on tbe compressol O-rings and gaslets
should no(
br rcused. Replace rhern with ncw
ones.
COMPRESSOR
OIL
INDICATIONS
Discoloration of lh€ oil
is an
indication
of a conrainin ed
sy\rrm .n,i
lurure
prohl(m,.
R(le' ro rh. lollo$ing
com-
pressor
Oil Color Code
to diagnose the conditions and cor-
COMPRESSOR
OIL COLOR CODE
COLORLESS
or LICHT YELLOW Indicnts good
com,
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