Inlet Air Filter
Servicing of the induction filtration system shall be as
recommended by the supplier of the particular system
selected for your application. The periods of servicing
should be established by checking at regular intervals
until a pattern is found. Daily maintenance is not
uncommon in many applications.
Each time a service operation is performed, inspect the
filtered side of the system, including the vacuum pump
inlet valve, for solids, dirt and/or liquids. If any is
found determine the cause and correct. If not corrected,
reduced life or complete failure of the vacuum pump
and/or any of its components can be expected. Always
make certain all gaskets, threaded connections, flange
connections, and hose or pipe connections are
absolutely tight. Do not allow particulate to fall into the
inlet of the vacuum pump when replacing the element.
Most inlet filters can be installed horizontally to prevent
this.
Vacuum Pump Shaft Fluid Sea]
line. The wear ring rotates with the shaft, against the
lips of the seal and both parts are considered normal
maintenance items. Shaft seals must be replaced when
excessive fluid leakage is detected or when rebuilding
the vacuum pump. The original seal is warranted for
12 (twelve) months.
Shaft seals are wear items that will eventually have to
be replaced. A complete understanding of the
installation procedure and special tools are required for
a successful seal replacement. Should you decide to
replace the seal yourself, be certain to ask your Quincy
distributor for the complete illustrated instructions
(available as a Service Alert) at the time you order the
seal and special tools. If your distributor does not have
a copy of these instructions, ask him to order a copy
from Quincy Compressor Division at no charge.
QSVI compressor units incorporate a fluid scavenge
system to complement the use of the triple lip seal
assembly. Any complaint of shaft seal leakage
requires that the scavenge system be inspected for
proper operation prior to the replacement of the shaft
seal. Proper inspection consists of the following:
The QSVI vacuum pump shaft seal is a scavenged triple
lipped shaft seal assembly, consisting of a wear ring,
1.) Check to assure that the scavenge line fitting at the
fluid slinger, shaft seal and scavenge cavity with return
bottom of the scavenge line cavity is open and clear.
se
ger
‘a
—
—
—
l\ ‘
1
u
1
1
II II
\
wear ring 1
“%
‘-w%’+
\
Figure 6-2 QSVX Shaft Seal
I
k
,,.*TY<3,,
!!,)!
,,,, . . . . . .,
.
Page 49
To Next Page
Loading...
Need help?
General
