Pump packing is widely employed for high shaft speeds. It contains lubricants that are specially formulated to aid on pump equipment’s start up, ensuring packing pliability for more durability. Pump packing is necessary for reducing leakage into the atmosphere through sealing the rotating shaft used in a stationary housing.
When using a packed pump, properly unpacking, installing and adjusting it can potentially make all the difference between success and failure of your pump.
Removing Pump Packaging
Removing all the old pump packing can be among the most challenging steps in the pump packing process. When a system outage occurs, repacking equipment is often done under severe time constraints. Resisting the urge of simply removing just a couple of package rings located near the stuffing box is important. Rather, go all the way to the bottom.
If your pump is using a lantern ring and flush injection, ensure that the lantern ring is removed as well as the packing beneath it. The Engineer needs to take care in terms of ensuring that the shaft as well as the bore surface is not damaged during the process.
Inspecting the Packaging
For the Engineer and engineering team, the opportunity of peeping inside the pump stuffing box doesn’t happen on many occasions. They should maximize on this chance to check and inspect the condition of the equipment and also undertake some record keeping. This will make the process of unpacking, installing or servicing easier the next time.
Measure and Record
Products being shipped to Canada have to be in conformity with the relevant set standards. Dimensions like stuffing box diameter and depth as well as the shaft diameter need to be carefully measured and recorded by the Engineer in charge.
If your pump uses flush injection, the flush port location and the lantern ring length should also be measured and duly recorded. These are the measurements that will assist in properly aligning the lantern ring with the flush port. If in the past your pump has proven to be inconsistent, this could perhaps be the required solution.
Installing the Pump
As each ring gets inserted, it’s important that it gets firmly seated into the stuffing box bottom before the next ring is installed. This creates more consistent compression throughout the packing.
For tamping, the engineering team doing the installation can employ short lengths of metallic bushings, split tubing, or corrugated cardboard. Remember to have these tools removed prior installing the next ring! The seam of successive rings should be offset by 90 degrees.
Proper pump installation makes all the difference between success and failure of your pumping equipment. By keeping in mind the fine points discussed above during the entire procedure, the chances of success are greatly increased.Only then can you realize a reliable, robust, long lasting seal.