Section 5: TROUBLESHOOTING
5.10
Vacuum Problems
Leakage, contamination and unusual outgassing are the general causes of problems with poor vacuum. To
operate at maximum efficiency a system must be thoroughly clean. If the system is completely clean and free
from leaks, and unwarranted vacuum problems still exist, the pump should be checked. A simple criterion for
the condition of the pump is the determination of its maximum vacuum capability. This can be accomplished
by blocking of the intake and reading the vacuum level on the gauge (See Section 2.8).
5.11
Troubleshooting Guide
g
n
i
p
m
u
P
r
o
o
P
d
e
e
p
S
m
u
u
c
a
V
r
o
o
P
t
i
n
U
d
u
o
L
e
l
b
i
s
s
o
P
s
e
s
u
a
C
n
o
i
t
c
A
e
v
i
t
c
e
r
r
o
C
X
X
X
d
e
g
a
m
a
D
s
e
v
l
a
V
s
e
v
l
a
v
r
e
p
p
a
l
f
e
c
a
l
p
e
R
X
X
X
n
i
s
i
r
b
e
D
s
e
v
l
a
V
d
n
a
s
i
r
b
e
d
e
v
o
m
e
R
e
g
a
m
a
d
e
v
l
a
v
r
o
f
k
c
e
h
c
X
X
X
d
e
g
a
m
a
D
t
e
k
s
a
G
t
e
k
s
a
g
e
c
a
l
p
e
R
X
X
X
d
a
e
H
e
s
o
o
L
w
e
r
c
S
w
e
r
c
s
d
a
e
h
n
e
t
h
g
i
T
X
X
g
n
i
t
ti
F
e
s
o
o
L
s
g
n
i
t
ti
f
n
e
t
h
g
i
T
9
Summary of Contents for 2560
Page 11: ...6 11 Pumping Speed Curves 11 ...
Page 21: ...21 ...
