LEYBOLD Trivac D16A User Manual

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Symptoms
3. The
pump
will
not
achieve its
ultimate
pressure.
Trouble
Area
a. Gas ballast valve
(17)
b.
Vacuum
line
connection
c.
Exhaust
connec-
tion
line
d.
Vacuum
line
or
evacuated vessel
e.
Dirt (2) on
intake
tube
(1)
f.
Lubricating fluid
g.
Module
contains'
insufficient lubricating fluid.
h.
Anti-suck
back
assembly_
Also
See
Symptom
5g.
Probable Cause
Valve (17) is·open.
Cap
(18)
is
worn.
The
O-ring (27)
on
the
end
of
the
gas ballast
tube
(27)
is
worn.
Vacuum
line
is
connected
to
exhaust
port
(6).
Line
diameter
is
smaller
than
exhause
port
(6)
diameter.
Vacuum line
or
vessel
contains
leak.
Trap (2)
is
obstructed
with
dirt.
Fluid
is
contaminated
resulting
in
poor
sealing
qualities and excessive
wear
on
seals.
Wrong lubricating fluid
is
being used.
Pump
fluid level
is
too
low.
Oil nozzle (56)
is
clogged.
Pump
is running continuously
at
187
or
more Torr.
The
coupling (37)
is
too
tight
against
the
retainer ring (40)
or
the
centrifugal switch (39).
Close vafve (17) unless
condensation
is
a
problem.
Install new
cap
(18).
Install new O·ring (27).
Connect
vacuum line
to
intake
tube
(1).
Install larger diamete'r
connection
line.
Repair leak
or
+clean O-ring if
dirty.
+Clean
dirt
trap
(2).
See
Symptoms
1 and 2.
Flush
out
pump
and add
correct
lubricating
fluid.
Add lubricating fluid
to
pump.
+Clean oil nozzle
(56)
and
change lubricating fluid.
Slowly
pour
some lubricating fluid
into
intake
tube
(1)
and run
pump
at lower pressure.
Loosen
the
coupling setscrew, pull
the
coupling
(37)
away
from
the
centrifugal switch (39)
or
retainer
ring
(40) until
the
switch (39) has enough space
to
function
properly, and
then
tighten
the
coupling
setscrew.
B·5, 0-1 c,
and
E·9
Sec. 3-3,
Steps
3 & 4
Sec. 3-3,
Step
4
B-1
and
B-2
Sec_
4-3-2
Sec. 4-3·1
B·l
thru
B·
7, E-3c
& Sec. 4-3-2
B·l
and
Sec.
4·2
" CAUTION
B·l
thru
B·9,
F-ll
& F-12
*This
column
contains
the
disassembly
steps
required
to
perform
the
corrective
action.
Some
critical
assembly
steps
are
also
listed.
If
the
section
is
n!;)tspecified,
the
steps
are
located
in
Section
5.
+Use
the
general
cleaning
instructions
at
the
beginning
of
Section
5·E.
.
.,
m-
m
11&

LEYBOLD Trivac D16A Specifications

General

Brand	LEYBOLD
Model	Trivac D16A
Category	Water Pump
Language	English