Operation; Preparation For Start-Up; Stuffing Boxes; Packing - Goulds Pumps JC Installation, Operation And Maintenance Instructions

Operation

Preparation for start-up

Stuffing boxes

In the conventional stuffing box, mechanical seals and packing seal between the stationary and
rotating components of the pump. Generally, a clear liquid such as water is forced through the
stuffing box to lubricate the sealing elements. The lubricating liquid pressure must exceed the
pressure of the pumpage at the stuffing box. For end suction pumps, lubricating liquid pressure
should be 10-15 PSIG higher than the discharge pressure. For side and double suction pumps,
lubricating liquid pressure should be 10-15 PSIG higher than the suction pressure.
NOTICE: To determine suction or discharge pressure, use gauge pressure only.
The piping supplying the lubrication liquid should be fitted tightly to prevent air from entering.
On suction lifts, a small quantity of air entering the pump at this point may result in loss of
suction.
Lubrication liquid pressure is controlled by a valve on the outlet piping. Since the liquid leaking
from the stuffing box should be clear, control of the packing lubricant will vary with the condition
of the packing. Increase pressure within the stuffing box by closing outlet valve. Adjustments
should be slow and consistent with the run-in procedure for new packing.
The lubricating liquid must be clean, free of grit and acid. Shaft sleeve scoring, packing
destruction, and mechanical seal face damage will result from contaminated lubricant.

Packing

WARNING:
Original equipment packing is a suitable grade for the service intended. To replace original
packing, contact your local Goulds representative.
Refer to Bill of Material and Assembly Drawing for specific packing size and configuration.
Model JC Installation, Operation and Maintenance Instructions
Packed stuffing boxes are not allowed in an ATEX classified environment.
Operation
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