Flowserve Circpac HP - Manual (Page 2)

2
1 Precautions
1.1 Please read these instructions carefully. Installation in accordance
with the following instructions will contribute to long, trouble-free life of
the Circpac HP.
1.2 For related control panels or other auxiliary equipment, separate
instructions are required.
1.3 The Circpac HP and related equipment must be transported and
stored in the unopened, original shipping container. Warehouse
storage must be clean and dry.
1.4 The ultimate user must ensure that personnel assigned to handle,
install, and operate the Circpac HP and related equipment are well
acquainted with the design and operating requirements of such
equipment. The manufacturer is not liable for damage incurred
through improper handling, installation or use.
2 Brief Description
2.1 The Circpac HP is an engineered, segmented circumferential gas seal
for gas compressors. Each seal is custom designed for a specific
application and should only be operated according to the limits of the
specific application.
2.2 The Circpac HP is delivered as a complete, ready-to-install cartridge
unit. Depending on the application, the cartridge may include a sleeve
(preferred).
2.3 Dynamic sealing occurs between the stationary circumferential ring
and the rotating sleeve/shaft where pressure breaks down across the
sealing surface. Static sealing occurs at gasket points and between
the stationary ring and stationary housing. The ring is designed to
contact the sleeve/shaft to minimize gas leakage.
2.4 Depending on the application, multiple ring configurations may be
used. Examples include: tandem for high pressure, double for zero
emissions, and bearing purge for oil containment. Proper piping,
control system design, and system operation are required for long-
term seal performance. If zero product emissions are desired, barrier
gas at a higher pressure than the product is required at all times.
2.5 Long-term seal performance is best attained if the following conditions
are sustained. Failure to comply with these conditions may result in
excessive gas consumption and/or product leakage to the
atmosphere.
2.5.1 Good equipment condition and consistent operation within the
equipment manufacturer’s specifications.
2.5.2 Perpendicular orientation between the shaft sleeve and the
equipment housing.