Figure 21:
To pack the stuffing box, install the packing and lantern ring in the proper sequence. Each ring should be
installed separately. Firmly seat each ring. Use of a wooden split bushing is recommended. See Fig. 22.
Use gland to jack the bushing and ring into the box. Stagger joints in each ring 90°. Make sure center of
lantern ring lines up with flush tap in the stuffing box. Any extra rings are spares.
Figure 22:
Tighten the gland nuts evenly but not tight. Follow adjustment procedure outlined in
Removal of packing
To remove packing from the stuffing box, the following steps should be followed:
1.
Remove gland assembly.
2.
Remove packing with a packing hook.
3.
Remove lantern ring by inserting a wire hook into the ring on the outer edge.
4.
Clean the stuffing box.
5.
On horizontally split case pumps, an alternate method of removing packing is to remove the up-
per half casing. Refer to
6.3 Disassembly of pump on page 37
. Remove packing and lantern
ring and inspect sleeves. If deeply grooved, sleeves should be replaced.
Mechanical seals
When mechanical seals are furnished, the description and identification is indicated on the order write-
ups which are a part of the order acknowledgement, dimension print, and the packing list Separate seal
manufacturers' installation drawings are attached to the pump. The seals are installed and adjusted at
the factory. The manufacturer's drawings should be filed for future use in maintaining the seal and in ad-
justing the seal when the pump is disassembled. To properly prepare the seal for operation, various cool-
ing and flushing flows may have to be connected. In some cases, these flows are recirculated from the
pump casing; in others, liquid from an outside source may be used. Connect cooling and flushing flows
to seal as directed in subsequent steps.
3.3 Stuffing boxes
24
3107 Installation, Operation and Maintenance Instructions
