3
1
2
1.
Lantern ring flush connection
2.
Split gland (non-quench)
3.
Lantern ring
3.
Insert the packing and stagger the joints in each ring by 90°.
Install the stuffing-box parts in this order:
a) Two packing rings
b) One lantern ring (two-piece)
c)
Three packing rings
NOTICE:
Make sure that the lantern ring is located at the flushing connection to ensure that flush is ob-
tained. Failure to do so may result in decreased performance.
4.
Install the gland halves and evenly hand-tighten the nuts .
5.8.6 Dynamic-seal option (3180 and 3185 S, M, L, and XL groups only)
WARNING:
Dynamic seals are not allowed in an ATEX-classified environment.
The dynamic seal consists of two parts:
•
A repeller seal that prevents leaks during operation
•
A secondary seal that prevents leaks when unit is off
Table 11: Dynamic seal part function
Part
Description and function
Repeller seal
A repeller seal prevents liquid from entering the stuffing box during operation. The re-
peller normally does not require a flush. Some services might require a flush if solids
have built up on the repeller. The unit contains a flush tap for that purpose. The unit
also contains a drain tap to drain the repeller chamber if there is a danger that the unit
might freeze.
Secondary seal
The secondary seal prevents leaks during pump shutdown. The seal can be one of
these types:
•
Graphite packing
•
Diaphragm seal
5.8 Shaft-sealing options
62
Models 3180, 3181, 3185, and 3186 Installation, Operation, and Maintenance Manual
Содержание GOULDS PUMPS 3180
Страница 1: ...Installation Operation and Maintenance Manual Models 3180 3181 3185 and 3186 ...
Страница 2: ......
Страница 153: ...9 1 Certificates of conformance Models 3180 3181 3185 and 3186 Installation Operation and Maintenance Manual 151 ...
Страница 155: ...9 1 Certificates of conformance Models 3180 3181 3185 and 3186 Installation Operation and Maintenance Manual 153 ...