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tu
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e
Pr
essuri
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a
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or
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er
t
ga
s
tu
rne
d
of
f
Pu
rg
e
tim
er
re
se
ts
Po
w
er
o
n
-
N
or
mal
oper
atio
n
Leak
age
Co
mpen
satio
n
st
ar
ts
Pu
rg
e
flo
w
ceases; R
elief
V
alve
clo
ses
PR
ES
S
U
R
IZ
ED
IN
DI
C
A
TO
R
Pu
rg
e
flow
fa
lls
b
el
ow
m
in
im
um
"Pu
rge
Comple
te
"
si
gn
al
to e
le
ctr
ic
al
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er
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w
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rg
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valve clo
ses;
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w
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w
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sign
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N
Pu
rg
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tim
er
tim
es
ou
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No
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flo
w
s
till
abo
ve
th
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min
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m?
Pu
rg
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timer
s
tar
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to
matic
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rg
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di
ca
to
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tu
rns
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as
de
pe
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up
on
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ns
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la
ck
=
Pu
rg
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flow
too l
ow
Pu
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ow
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en
sor
tu
rn
s
on
Yes
No
Pu
rg
e
O
ut
let
f
lo
w
abo
ve
th
e
min
imu
m?
R
el
ief
Va
lve
op
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Pu
rg
e
flo
w
st
ar
ts
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ressuri
zed
"
si
gn
al
t
o
rem
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al
ar
m
swi
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Am
be
r
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urg
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flo
w
O
K
G
reen
=
P
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re
O
K
Lo
w
Pressure
senso
r
tu
rns
on
No
Yes
Is
th
e
PE
pr
es
su
re
abo
ve
th
e
min
imu
m?
Ai
r
en
te
rs
th
e
PE
PR
ES
S
U
R
IZ
ED
IN
DI
C
A
TO
R
R
ed
= P
ressure
Lo
w
"P
ressuri
zed
"
si
gn
al
a
bsent
i.
e.
"
A
la
rm
"
O
N
Turn
Pr
essuri
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ng
a
ir
or
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er
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ga
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on
Pr
essuri
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os
ure
do
or
cl
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ed
PR
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S
U
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IZ
ED
IN
DI
C
A
TO
R
R
EV.
M
OD NUM
BE
R
APPR
OVE
D
DAT
E
APPR
OVE
D
01
DR
A
W
N
23/
06/
2010
JP
dB
