Quincy Compressor 50093-103 - Manual (Page 55)

49
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 Seal
The QSVI vacuum pump shaft seal is a scavenged triple
lipped shaft seal assembly, consisting of a wear ring, fluid
slinger, shaft seal and scavenge cavity with return 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.