:ti
§
()
:b
=
:::s
fij
.:-
Symptoms
12.
The
pump
will
not
achieve its rated
pumping speed. (See
Section 1
of
the
Leybold-Heraeus
Catalog for pumping
speed curves.)
TABLE
6-1.
TROUBLESHOOTING
CHART
(Continued)
Trouble Area
Probable Cause
Recommended
Repair Steps*
Corrective Action
a. Lubricating fluid
Pump
is
cold.
Run pump for 1 hour while it warms
to
Sec. 4-1-2
operating temperature.
Fluid
is
dirty.
See Symptoms 1 and 2.
b. Vacuum
line valve
Vacuum line valve
is
Open vacuum line valve.
partially
closed.
c. Dirt trap (2) on
Trap (2)
is
obstructed
+Clean dirt trap (2).
B-1
and
B-2
intake
tube
(1)
with dirt.
d. Exhaust
or
vacuum
Exhaust
or
intake filter
Clean
or install new filtering element.
B-1
& Sec. 3-3
line
accessory
is
dirty.
e.
Exhaust
or
vacuum
Exhaust
or
intake line
Install larger
diameter connection line.
B-1
& Sec. 3-3,
line
connection
diameter
is
too
small.
Steps
3 & 4
f.
Coupling (37)
and/
Coupling
and/or
element
Properly install
new element and/or coupling.
See Symptom
or
elastic element
is
worn
or
improperly
lla.
(36)
installed.
g.
Exhaust holes
in
Holes
or
opening
is
blocked.
+Clean holes
or
opening.
B-1
thru
B-7,
second stage pump
& 0-12.
If
needed,
cylinder (46)
or
0-13
thru F-17
opening
in
center
bearing (52)
h. Anti-suck back
See Symptom 3h.
See Symptom 3h.
assembly
i. Friction between
Module
is
not
aligned
Align module.
B-1
thru
B-l0,
the rotors (48/54) properly.
F-10,
& F-12
or
vanes (49/53)
and
the
module
Oil
nozzle (56)
is
clogged.
+Clean nozzle
(56).
B-1
thru
B-7
&
E-3c
housing
(44/46/
52/55/60)
j. Inside
of
module
Dirt buildup
is
restraining
+Clean inside of module and change lubricating
B-1
thru
F-17
housing
rotation speed.
fluid.
(44/46/52/55/60)
k. Motor
Malfunction
Contact motor manufacturer's service center.
0-13&F-l
-'-
--------
---
----
--------
*This column contains the disassembly steps required
to
perform the corrective action. Some critical assembly steps are also listed.
Jfth.stetlon
is
not
specified, the steps are located
in
Section 5.
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