Models 947, 948 and 960 Leak Detectors Operations and Service Manual
2-3
Table 2-1 serves two purposes. In the upper portion, the valve name and type are defined. In
the lower portion, Table 2-1 indicates the valve state (open or closed) in relation to the
system status for testing the 947/948/960. The following abbreviations are used in Table 2-1:
Refer to Figure 2-2 on page 2-4 for valve locations.
V=Vacuum
S=Solenoid
O=Open
C=Closed. All valves are normally closed.
Table 2-1
Valve Operation
Va
lv
e
N
a
m
e
Roug
h
Roug
h V
a
lv
e
O
p
er
ator
Te
s
t
T
e
st V
a
lv
e
O
per
at
or
V
ent
Re
se
rv
o
ir Ro
u
g
h
G
ro
s
s
Le
ak
S
ta
ndar
d
T
e
st
Lea
k
S
ta
ndar
d
Lea
k R
ough
V
a
lve T
y
p
e
V
S
V
S
S
S
S
S
S
Va
lv
e
N
u
m
b
e
r
➀ ➄ ➁ ➅ ➂
➃
➆
➇
➈
System Status
Valve State
Vent
C
C
O
O
C
C
O
Start Rough
O
C
C
C
C
C
C
Gross Test
O
C
C
C
O
C
C
Fine Test
C
O
C
O
C
C
O
Auto Cal
C
O
C
O
C
O
C
Hold and Fault
C
C
C
O
C
C
O
Summary of Contents for 948
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