Conditions for application of an external liquid
Condition
Action
The stuffing box pressure is above atmospher-
ic pressure and the pumped fluid is clean.
Normal gland leaks of 40 to 60 drops per minute is usually sufficient
to lubricate and cool the packing. You do not need sealing liquid.
The stuffing box pressure is below atmospher-
ic pressure or the pumped fluid is not clean.
An outside source of clean compatible liquid is required.
An outside source of clean compatible liquid is
required.
You must connect the piping to the lantern ring connection with a 40
to 60 drops-per-minute leak rate. The pressure must be 1.01 kg/cm
2
| 15 psi above the stuffing box pressure.
5.8.5 Seal the shaft with a packed stuffing box
WARNING:
Packed stuffing boxes are not allowed in an ATEX-classified environment.
WARNING:
Failure to disconnect and lock out driver power may result in serious physical injury. Never at-
tempt to replace the packing until the driver is properly locked out.
Pumps are shipped without the packing, lantern ring, or split gland installed. These parts are included
with the box of fittings shipped with each pump and must be installed before startup.
1.
Carefully clean the stuffing-box bore.
2.
Twist the packing enough to get it around the shaft.
Packing rings
Lantern rings
1
3
4
2
3
4
1.
Packing rings
2.
Lantern rings
3.
Correct
4.
Incorrect
Figure 31: Packing rings and lantern rings
5.8 Shaft-sealing options
Models 3180, 3181, 3185, and 3186 Installation, Operation, and Maintenance Manual
61
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 ...