172-65473MA-03 (GT5C PowerTrap) 17 Jul 2019
26
Types of Failure and their Causes
Detailed explanations of the meanings of the numbers listed in the “Types of Failure”
column are found in the “Causes and Corrective Measures” table.
Pump is in the correct operating condition when P
i
≤
P
b
(equipment pressure P
i
is equal
to or lower than back pressure
P
b
). Trap is in the correct operating condition when P
i
>
P
b
, (equipment pressure P
i
is higher than back pressure
P
b
).
Typ
es of
Fa
ilure
(C
ategory
A
–
G
)
an
d
C
orr
ective
M
ea
sures
(C
au
ses 1
–
5)
G
1
,2
1,2
F
3
1
1
1
1
E
1
5
2
3
1
3,4,
5
2
4
5
1,2
D
1
1
1,2,
3
C
1,2
1,2
3
B
2
1
A
1,2,
3
1,4
Is
the
re a
con
ti
nu
ou
s
fl
ow
ing
sou
nd
f
rom
the
exh
au
st
pi
pe
?
NO
YES
NO
NO
YE
S
NO
NO
YES
NO
NO
YES
H
as pum
pe
d m
ed
ium
accu
m
ul
ated
in t
he
eq
ui
pment
,
or
ha
s
w
ater
ha
m
m
er
occu
rr
ed
?
H
as st
ea
m
l
ea
ked
i
n
the
ou
tl
et
si
de
or
ha
s
w
ater
ha
m
m
er
occu
rr
ed
i
n
ou
tl
et
pi
pi
ng
?
H
as
reve
rse f
low
sen
t
st
ea
m
ba
ck
into
the
eq
ui
pment
?
Is
the
re a
con
ti
nu
o
us
fl
ow
ing
sou
nd
f
rom
the
m
otive
m
ed
ium
sup
pl
y
pi
pe
?
NO
YES
NO
YES
YES
NO
YES
YES
NO
YES
YES
H
as pum
pe
d
m
ed
ium
col
lected
in t
he
P
ow
erTr
ap
?
NO
YES
NO
YES
H
as t
he
P
ow
erTr
ap
op
erat
ed
at
lea
st
on
ce?
NO
YES
Does not Pump
Does not Trap
