Goulds Pumps VIC - IOM - Manual (Page 53)

When to replace
Adjust the packing when these conditions occur:
• The leak rate exceeds two drops per second.
• There is overheating or there are no leaks.
Adjust the packing when leaking is excessive
Perform this procedure if leaks exceed two drops per second.
1. With the pump in operation, tighten the gland nuts one-quarter turn.
2. Before you make any more adjustments, check to see if the packing has equalized against the increased
pressure by making sure the leaks have decreased to a steady state.
If the leaks decrease to two drops per second, then you are finished. If the leaks continue to exceed
two drops per second, continue to the next step.
3. Shut down the pump.
4. Allow the packing to compress enough so that the gland is about to contact the upper face of the
stuffing box.
5. Remove the split gland, add one extra packing ring, and readjust.
6. If this fails to reduce the leak to two drops per second, then remove all packing rings and replace
them with new rings:
a) Remove the packing with the aid of a packing hook.
b) If a lantern ring is provided, remove it by inserting a wire hook in the slots of the ring and pull it
from the stuffing box.
c) Thoroughly clean the stuffing box of all foreign matter.
7. If the replacement packing is in the form of a continuous coil or rope, cut it into rings before
installing:
a) Tightly wrap one end of the packing material around the top shaft like one coil spring.
b) Cut through the coil with a sharp knife.
See Installation for details about how to properly reinstall the stuffing box.
Adjust the packing when there is overheating or no leaks
CAUTION:
If there are no leaks or the stuffing box overheats, do not back off the gland nuts while the pump is
running. This causes the entire set of packing rings to move away from the bottom of the box without
relieving pressure of the packing on the shaft.
A small amount of leaking is required in order to prevent overheating.
1. Stop the pump and allow the packing to cool.
2. Restart the pump.
3. Repeat these steps until two drops of liquid per second comes through.
4. If this fails to fix the problem, then you must replace the packing.
Thrust pot lubrication guidelines
Flushing the oil reservoir
Flush the oil reservoir in order to remove all grit particles in the oil reservoir sump. Use the same type of
oil to flush the reservoir as specified for lubrication. Always keep a supply of turbine oil on-hand.
NOTICE:
Pumps are shipped without oil. Oil-lubricated anti-friction bearings must be lubricated at the job site.
Maintenance (Continued)
Model VIC Installation, Operation, and Maintenance 51