below. 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 40: Wooden split bushing
1. Stuffing box
3. Gland
2. Wooden "split bushing"
4. Shaft
Tighten the gland nuts evenly but not tight. Follow adjustment procedure outlined in
5.5 Remove Packing
To remove packing from the stuffing box, the following steps should be followed:
WARNING:
Packed stuffing boxes are not allowed in an ATEX-classified environment.
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.
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 upper
half casing.
See
6.5 Disassemble the Pump on page 56
.
a) Remove packing and lantern ring and inspect sleeves.
b) If deeply grooved, sleeves should be replaced.
5.6 Mechanical Seals
WARNING:
The mechanical seal used in an Ex-classified environment must be properly certified.
CAUTION:
The mechanical seal used in an Ex-classified environment must be properly certified.
Running a mechanical seal dry, even for a few seconds, can cause seal failure and physical
injury. Never operate the pump without liquid supplied to the mechanical seal.
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
5.5 Remove Packing
3175 Installation, Operation and Maintenance Instructions
35
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