Leybold Vacuum Products, TRIVAC A, Dual Stage, Rotary Vane ...

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6. Excessive smoke or
oil mist in exhaust
stream.
Trouble Area
a. Fluid level in sight
glass (15) is high.
b. Negative pressure
exhaust system
(only if one is
connected).
c. Oil filter (35)
d. Pump pressure
Probable Cause
Pump is filled with
lubricating fluid beyond
its capacity.
Negative pressure is
too high.
Filter is clogged.
Pump is running
continuously at greater
than 112 Torr.
Drain excess lubricating fluid.
Adjust negative pressure exhaust system.
+ Clean filter or install new filter.
Modify system to run at lower pressure or
use larger pump model.
Sec. 3-3, Step 5
8-5 & 8-6
Sec. 4-2
CAUTION
e. Gas ballast
valve (17)
Valve (17) is open.
Close valve (17) or install SE smoke
eliminator or AF exhaust filter with oil
return line.
Sec. 2-3
7. Lubricating fluid is
ejected out of the
intake tube (1). (Also
see Symptom 13.)
Motor (73)
Motor is rotating in wrong
direction.
Interchange the line ends.
Check rotational lock bearing.
F-1a
D-9 & F-1b
8. Excessive lubricating
fluid is consumed.
(Also see symptoms
6 and 9.)
a. Oil filter (35)
b.Oilleak
Filter is clogged.
Flat gasket (9) on plug
screw (8) is worn.
+ Clean filter or install new filter.
Install new flat gasket (9).
8-5 & 8-6
8-3, D-6, & F-15
Main seal (13) between oil
casing (12) and coupling
housing (11) is worn.
Replace seal (13).
8-1 thru 8-10,
F-12, F-14 thru
F-16
Front end plate radial
shaft seal (45) is worn.
Install new seal and check if the exhaust line is
too narrow or if an exhaust filter or screen is
clogged.
8-1 thru C-6,
D-10, F-6k, F-9,
F-11, & F-12
Rear end plate radial
shaft seal (45) is worn.
Install new seal.
8-1 thru C-i, C-9,
C-10, D-8, F-3,
F-6g, F-10,
& F-12
Inert gas pressure in
purge line of modified
pumps is too high.
Reduce inert gas presure to below 3 psig for an
oil casing purge & below 2 psig for an inert gas
connection to the gas ballast valve.
Sec. 3-3
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'This column contains the disassembly steps required to perform the corrective action. Some critical assembly steps are
also listed. If the section is not specified, the steps are located in Section 5.
+ Use the general cleaning instructions at the beginning of Section 5-E.