Varian 948, Operation And Service Manual

Page: 158 / 176

Models 947, 948 and 960 Leak Detectors Operations and Service Manual
E-2
A
u
to
m
a
ti
c
V
a
lv
e S
e
que
nc
in
g
M
ic
ro
pr
oc
e
s
s
o
r-
c
o
nt
ro
lled
v
a
lv
e
op
er
a
tio
n p
rov
ides
a
u
to
m
a
ti
c
s
y
s
te
m
c
y
c
lin
g.
T
he
te
s
t a
n
d
r
o
u
ghi
ng
v
a
lv
e
s
ar
e v
a
c
u
um
-a
c
ti
v
at
e
d
, r
e
qu
ir
in
g
no
ai
r
s
u
p
p
ly
.
A
u
to
m
a
ti
c
s
h
u
tdow
n
is
a
c
h
ie
v
ed
wi
th
a
s
in
g
le
s
w
it
c
h
f
u
nc
ti
on.
Sa
fe
ty
I
n
te
rl
o
cks
T
h
e
va
lv
e
s
yst
e
m
d
e
s
ig
n
co
mp
le
te
ly
p
ro
te
c
ts
t
h
e
h
ig
h
-v
a
c
u
u
m
syst
e
m
u
n
d
e
r t
e
s
t a
g
a
in
s
t p
re
ssu
re
s
u
rg
e
s
a
n
d
p
o
w
e
r i
n
te
rru
p
ti
o
n
s
.
C
y
cl
e
T
ime
Bl
a
n
k
e
d
p
o
rt
ca
n
b
e
cycl
e
d
t
o
t
h
e
f
in
e
l
e
a
k
t
e
st
i
n
f
o
u
r se
co
n
d
s.
T
h
e
a
u
to
se
q
u
e
n
ce
r f
e
a
tu
re
p
ro
v
id
e
s
cl
e
a
r a
cce
p
t/
re
je
c
t
s
ign
al
s
an
d a
llo
w
s
pr
og
ra
m
m
in
g
o
f
ro
ugh
in
g,
t
e
s
ti
n
g
,
a
nd c
y
c
lin
g
d
u
ra
ti
o
n
.
T
e
st
P
o
rt
1
-1
/8
" (2
8
mm) ID
q
u
ick co
u
p
lin
g
typ
e
, KF
2
5
(ISO N
W
-2
5
)
a
d
a
p
te
r i
n
cl
u
d
e
d
.
R
e
mo
te
I/O
C
a
p
a
b
ili
ti
e
s
P
a
ra
lle
l In
te
rfa
c
e
(D
B
-2
5
S
&
D
C
-3
7
S
) w
ith
o
p
to
-i
s
o
la
te
d
(5
- 2
4
V
) i
n
p
u
t, S
e
ri
a
l R
S
-2
3
2
In
te
rfa
c
e
(D
B
-2
5
S), R
e
mo
te
C
o
n
tro
l In
te
rfa
c
e
(D
E-0
9
S
).
A
c
c
e
s
s
o
ry
(
o
p
tio
na
l)
R
e
m
o
te
Co
nt
ro
l
and
di
s
p
la
y
u
n
it
w
it
h
25
"
c
o
rd
, s
e
rv
ic
e p
e
n
dan
t,
at
m
o
s
p
h
e
ri
c
gr
os
s
l
e
a
k
, ex
te
rnal
c
a
libr
at
ed
hel
iu
m
Le
ak
s
.
R
e
c
o
m
m
end
ed
A
m
b
ie
n
t
O
p
er
at
in
g
C
ond
it
io
ns
Indo
or
us
e.
A
lt
it
u
de:
u
p
t
o
20
00 m
,
T
e
m
p
er
at
ur
e:
10
°
C
t
o
3
8
°
C
(
5
0
°F
t
o
10
0 °
F
).
M
a
x
im
u
m
r
e
la
ti
v
e
hu
m
id
it
y
(
HR)
80
%
fo
r
te
m
p
e
ra
tu
re
s
up
t
o
31 °
C
(
8
7.
8
°F
)
d
e
c
rea
s
ing
l
in
e
a
rl
y
t
o
50
% H
R
a
t 40
°
C
.
No
ho
ar
fr
os
t,
de
w
, pe
rc
o
la
tin
g
wat
e
r,
r
a
in
, s
o
la
r
ir
ra
d
ia
ti
on,
et
c
. A
tm
o
s
phe
ri
c
a
ir
p
re
s
s
u
re
: 75
k
P
a
t
o
10
6 k
P
a.
P
o
llu
ti
o
n
D
e
g
re
e
II,
In
s
ta
lla
ti
o
n
(Ov
e
rv
o
lt
a
g
e
) C
a
te
g
o
ry
II i
n
a
c
c
o
rd
a
n
c
e
w
it
h
U
L
3
1
0
1
-1
S
ta
n
d
a
rd
.
A
m
bi
ent
S
tor
ag
e C
o
n
d
it
io
ns
R
e
la
ti
v
e
h
u
m
id
it
y
: 0%
t
o
95%
, n
on-
c
o
nde
ns
ing,
T
e
m
p
e
ra
tu
re
; -
3
4 °
C
t
o
6
5
°
C
(
-3
0
°
F
t
o
15
0 °
F
)
P
o
we
r Re
q
u
ir
em
en
ts
1
1
5
V
A
C,
2
0
A
, 60
/5
0
Hz
o
r 23
0
V
A
C,
10
A
, 60
/5
0
H
z
. NO
T
E
: I
n
pu
t
v
o
lt
ag
e s
e
tu
p
c
a
n
n
o
t be
m
o
di
fi
ed
by
a
c
u
s
to
m
e
r.
C
onf
or
m
anc
e
S
tand
ar
d
s
M
e
e
ts
ap
pl
ic
a
b
le
U
L
, C
S
A
a
n
d
CE
S
tan
da
rd
s
.
D
ime
n
s
io
n
s
2
2
" W
x 3
3
"
D
x 4
5
" H
(
5
5
9
cm
x
8
1
8
cm
x 1
1
3
8
cm)
.
S
h
ip
p
in
g
W
e
ig
ht
A
p
p
rox
im
a
tel
y
51
0 l
b
(
2
32
k
g
).
T
abl
e
E-
1
947
/948/
960 Specif
icati
ons (Cont
inued)
P
la
tf
o
rm
94
7 948/
960
High V
a
c
uum P
u
mp
T
y
pe
:
Air
-c
o
o
led,
M
a
inte
na
nc
e
-F
re
e
V7
0 T
u
rb
o
Pu
m
p
ing Spe
e
d
N
2
,
7
0
l/s
V
7
0
D
M
a
c
roT
or
r
Pu
mp
in
g
S
p
e
ed
N
2
,
6
0
l/s
V
70 T
u
rb
o
Pumping S
p
e
e
d N
2
,
70 l
/s
V7
0
D
M
a
c
roT
or
r
P
u
mping Spe
e
d
N
2
,
60
l/s