CVHH-SVX001G-EN
111
Figure 64.
Anchor for use when performing purge
maintenance
W
WA
AR
RN
NIIN
NG
G
F
Fa
alllliin
ng
g O
Offff E
Eq
qu
uiip
pm
me
en
ntt!!
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 ffa
allll 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..
••
W
Wh
he
en
n w
wo
orrkkiin
ng
g o
on
n tto
op
p o
off tth
he
e u
un
niitt,, tte
ecch
hn
niicciia
an
nss
M
MU
US
ST
T u
usse
e a
a C
CO
OM
MP
PL
LE
ET
TE
E ffa
allll p
prro
otte
eccttiio
on
n
ssy
ysstte
em
m:: a
an
n a
an
ncch
ho
orr p
po
oiin
ntt llo
occa
atte
ed
d o
on
n tth
he
e u
un
niitt,,
a
a cco
on
nn
ne
ecctto
orr ((p
po
ossiittiio
on
niin
ng
g lla
an
ny
ya
arrd
d)),, a
an
nd
d a
a
b
bo
od
dy
y h
ha
arrn
ne
essss..
••
T
Th
he
e a
an
ncch
ho
orr p
po
oiin
ntt iiss e
en
ng
giin
ne
ee
erre
ed
d a
an
nd
d rra
atte
ed
d a
ass
p
pa
arrtt o
off a
a cco
om
mp
plle
ette
e ffa
allll p
prro
otte
eccttiio
on
n ssy
ysstte
em
m;; iitt iiss
tth
he
e tte
ecch
hn
niicciia
an
nss’’ rre
essp
po
on
nssiib
biilliitty
y tto
o u
usse
e a
a
p
po
ossiittiio
on
niin
ng
g lla
an
ny
ya
arrd
d a
an
nd
d a
a ffu
ullll b
bo
od
dy
y h
ha
arrn
ne
essss
w
wiitth
h tth
he
e a
an
ncch
ho
orr..
••
T
Te
ecch
hn
niicciia
an
nss M
MU
US
ST
T b
be
e ttrra
aiin
ne
ed
d iin
n h
ha
azza
arrd
d
rre
ecco
og
gn
niittiio
on
n a
an
nd
d tth
he
e p
prro
op
pe
err u
usse
e o
off p
pe
errsso
on
na
all
ffa
allll p
prro
otte
eccttiio
on
n ssy
ysstte
em
mss..
••
A
AL
LW
WA
AY
YS
S iin
nssp
pe
ecctt tth
he
e e
en
nttiirre
e ffa
allll p
prro
otte
eccttiio
on
n
ssy
ysstte
em
m ffo
orr d
da
am
ma
ag
ge
e b
be
effo
orre
e u
ussiin
ng
g..
••
N
NE
EV
VE
ER
R m
mo
od
diiffy
y a
an
ny
y p
pa
arrtt o
off tth
he
e ffa
allll p
prro
otte
eccttiio
on
n
ssy
ysstte
em
m ffo
orr a
an
ny
y rre
ea
asso
on
n..
W
WA
AR
RN
NIIN
NG
G
H
Ho
ott S
Su
urrffa
acce
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
sse
ev
ve
erre
e b
bu
urrn
nss..
S
Su
urrffa
acce
e tte
em
mp
pe
erra
attu
urre
ess m
ma
ay
y e
ex
xcce
ee
ed
d 3
30
00
0°°F
F ((1
15
50
0°°C
C))..
T
To
o a
av
vo
oiid
d p
po
ossssiib
blle
e sskkiin
n b
bu
urrn
nss,, sstta
ay
y cclle
ea
arr o
off tth
he
esse
e
ssu
urrffa
acce
ess.. IIff p
po
ossssiib
blle
e,, a
allllo
ow
w ssu
urrffa
acce
ess tto
o cco
oo
oll b
be
effo
orre
e
sse
errv
viicciin
ng
g.. IIff sse
errv
viicciin
ng
g iiss n
ne
ecce
essssa
arry
y w
wh
hiille
e ssu
urrffa
acce
e
tte
em
mp
pe
erra
attu
urre
ess a
arre
e ssttiillll e
elle
ev
va
atte
ed
d,, y
yo
ou
u M
MU
US
ST
T p
pu
utt o
on
n
a
allll P
Pe
errsso
on
na
all P
Prro
otte
eccttiiv
ve
e E
Eq
qu
uiip
pm
me
en
ntt ((P
PP
PE
E))..
Weekly Maintenance
Perform the following maintenance procedure on a
weekly basis:
1. With the purge unit operating, check the purge tank
condensing activity by observing the liquid
refrigerant flow in the moisture-indicating sight
glass located in the liquid drain line immediately
after the filter drier canister. A lack of visible
refrigerant flow in the sight glass indicates one of
the following:
a. A pump-out cycle is necessary.
b. A problem exists with the purge heat transfer
circuit (such as the condensing unit, expansion
device, or purge evaporator coil).
c. A problem exists in the purge control
subsystem.
d. Refrigerant vapor from the chiller condenser is
blocked or restricted.
2. Check the moisture-indicator sight glass. Replace
the filter-drier core if moisture is indicated.
N
No
otte
e:: The need for frequent changes of the filter
drier could be an indication of significant
chiller air or tube leaks.
Semi-Annual Maintenance
Perform the following maintenance procedure on a
semi-annual basis:
1. Inspect the air-cooled condenser coil and clean as
needed. Clean the coil from the fan side using
compressed air or coil cleaner. A dirty coil will
reduce purge efficiency and capacity.
2. Inspect the purge tank and carbon tank insulation
for any damage or degradation. Make any needed
repairs to the insulation.
Annual Maintenance
Perform the following maintenance procedure on an
annual basis:
1. Semi-annual maintenance procedures described in
“Semi-Annual Maintenance,” p. 111
2. Open the purge control panel and check all internal
components for such problems as corrosion,
terminal tightness, or signs of overheating.
Summary of Contents for CVHH CenTraVac
Page 126: ...126 CVHH SVX001G EN N No ot te es s ...