CVHE-SVX005B-EN
93
Leak Testing
W
WA
AR
RN
NIIN
NG
G
E
Ex
xp
pllo
ossiio
on
n H
Ha
azza
arrd
d!!
F
Fa
aiillu
urre
e tto
o ffo
ollllo
ow
w ssa
affe
e lle
ea
akk tte
esstt p
prro
occe
ed
du
urre
ess b
be
ello
ow
w
cco
ou
ulld
d rre
essu
ulltt iin
n d
de
ea
atth
h o
orr sse
erriio
ou
uss iin
njju
urry
y o
orr
e
eq
qu
uiip
pm
me
en
ntt o
orr p
prro
op
pe
errtty
y--o
on
nlly
y--d
da
am
ma
ag
ge
e..
N
Ne
ev
ve
err u
usse
e a
an
n o
op
pe
en
n fflla
am
me
e tto
o d
de
ette
ecctt g
ga
ass lle
ea
akkss.. U
Usse
e a
a
lle
ea
akk tte
esstt sso
ollu
uttiio
on
n ffo
orr lle
ea
akk tte
essttiin
ng
g..
W
WA
AR
RN
NIIN
NG
G
H
Ha
azza
arrd
do
ou
uss P
Prre
essssu
urre
ess!!
F
Fa
aiillu
urre
e tto
o ffo
ollllo
ow
w iin
nssttrru
uccttiio
on
nss b
be
ello
ow
w cco
ou
ulld
d rre
essu
ulltt iin
n
a
a v
viio
olle
en
ntt e
ex
xp
pllo
ossiio
on
n,, w
wh
hiicch
h cco
ou
ulld
d rre
essu
ulltt iin
n d
de
ea
atth
h o
orr
sse
erriio
ou
uss iin
njju
urry
y..
IIff a
a h
he
ea
att sso
ou
urrcce
e iiss rre
eq
qu
uiirre
ed
d tto
o rra
aiisse
e tth
he
e tta
an
nkk
p
prre
essssu
urre
e d
du
urriin
ng
g rre
em
mo
ov
va
all o
off rre
effrriig
ge
erra
an
ntt ffrro
om
m
ccy
ylliin
nd
de
errss,, u
usse
e o
on
nlly
y w
wa
arrm
m w
wa
atte
err o
orr h
he
ea
att b
blla
an
nkke
ettss tto
o
rra
aiisse
e tth
he
e tta
an
nkk tte
em
mp
pe
erra
attu
urre
e.. D
Do
o n
no
ott e
ex
xcce
ee
ed
d a
a
tte
em
mp
pe
erra
attu
urre
e o
off 1
15
50
0°°F
F.. D
Do
o n
no
ott u
un
nd
de
err a
an
ny
y
cciirrccu
um
msstta
an
ncce
ess a
ap
pp
plly
y d
diirre
ecctt fflla
am
me
e tto
o a
an
ny
y p
po
orrttiio
on
n o
off
tth
he
e ccy
ylliin
nd
de
err..
IIm
mp
po
orrtta
an
ntt:: If leak testing is required, contact a Trane
Service Agency.
Recommended System
Maintenance
N
NO
OT
TIIC
CE
E
P
Prro
op
pe
err W
Wa
atte
err T
Trre
ea
attm
me
en
ntt R
Re
eq
qu
uiirre
ed
d!!
T
Th
he
e u
usse
e o
off u
un
nttrre
ea
atte
ed
d o
orr iim
mp
prro
op
pe
errlly
y ttrre
ea
atte
ed
d w
wa
atte
err
cco
ou
ulld
d rre
essu
ulltt iin
n sscca
alliin
ng
g,, e
erro
ossiio
on
n,, cco
orrrro
ossiio
on
n,, a
allg
ga
ae
e o
orr
sslliim
me
e..
U
Usse
e tth
he
e sse
errv
viicce
ess o
off a
a q
qu
ua
alliiffiie
ed
d w
wa
atte
err ttrre
ea
attm
me
en
ntt
ssp
pe
ecciia
alliisstt tto
o d
de
ette
errm
miin
ne
e w
wh
ha
att w
wa
atte
err ttrre
ea
attm
me
en
ntt,, iiff
a
an
ny
y,, iiss rre
eq
qu
uiirre
ed
d.. T
Trra
an
ne
e a
assssu
um
me
ess n
no
o rre
essp
po
on
nssiib
biilliitty
y
ffo
orr e
eq
qu
uiip
pm
me
en
ntt ffa
aiillu
urre
ess w
wh
hiicch
h rre
essu
ulltt ffrro
om
m u
un
nttrre
ea
atte
ed
d
o
orr iim
mp
prro
op
pe
errlly
y ttrre
ea
atte
ed
d w
wa
atte
err,, o
orr ssa
alliin
ne
e o
orr b
brra
acckkiissh
h
w
wa
atte
err..
Condenser
Condenser tube fouling is indicated when the approach
temperature (the difference between the condensing
refrigerant temperature and the leaving condenser
water temperature) is higher than predicted.
If the annual condenser tube inspection indicates that
the tubes are fouled, two cleaning methods—
mechanical and chemical—can be used to rid the tubes
of contaminants. Use the mechanical cleaning method
to remove sludge and loose material from smooth-bore
tubes.
To clean other types of tubes including internally-
enhanced types, consult a qualified service
organization for recommendations.
Figure 61.
Typical chemical cleaning setup
Pipe
Connections
Shutoff
Valves
Cleaning
Solution
Circulator
Pump
1. Follow all instructions in
to remove waterbox covers.
2. Work a round nylon or brass bristled brush
(attached to a rod) in and out of each of the
condenser water tubes to loosen the sludge.
3. Thoroughly flush the condenser water tubes with
clean water.
4. Scale deposits are best removed by chemical
means. Be sure to consult any qualified chemical
house in the area (one familiar with the local water
supply’s chemical mineral content) for a
recommended cleaning solution suitable for the
job.
N
No
otte
e:: A standard condenser water circuit is
composed solely of copper, cast iron, and
steel.
N
NO
OT
TIIC
CE
E
U
Un
niitt C
Co
orrrro
ossiio
on
n D
Da
am
ma
ag
ge
e!!
F
Fa
aiillu
urre
e tto
o ffo
ollllo
ow
w iin
nssttrru
uccttiio
on
nss b
be
ello
ow
w cco
ou
ulld
d rre
essu
ulltt iin
n
cco
orrrro
ossiio
on
n d
da
am
ma
ag
ge
e tto
o tth
he
e u
un
niitt a
an
nd
d ttu
ub
be
ess..
F
Fo
ollllo
ow
w p
prro
op
pe
err p
prro
occe
ed
du
urre
ess w
wh
he
en
n u
ussiin
ng
g cco
orrrro
ossiiv
ve
e
cch
he
em
miicca
allss tto
o cclle
ea
an
n w
wa
atte
err ssiid
de
e o
off u
un
niitt.. IIff u
un
nssu
urre
e,, iitt
iiss rre
ecco
om
mm
me
en
nd
de
ed
d tth
ha
att tth
he
e sse
errv
viicce
ess o
off a
a q
qu
ua
alliiffiie
ed
d
cch
he
em
miicca
all cclle
ea
an
niin
ng
g ffiirrm
m b
be
e u
usse
ed
d..
IIm
mp
po
orrtta
an
ntt:: All of the materials used in the external
circulation system, the quantity of the
solution, the duration of the cleaning
period, and any required safety precautions
should be approved by the company
furnishing the materials or performing the
cleaning. Remember, however, that
whenever the chemical tube cleaning
method is used, it must be followed up
with mechanical tube cleaning, flushing,
and inspection.
