SERVICE WATER “A” PUMP ( Top Pump)

This is a 75 H.P. motor that is connected to a new ANSI PRO pump, on a new base. This pump provides service water throughout the combined cycle plant, without it we could not run this plant. The contractors came and grouted the new base in while being reminded to fill all the crevices, get the air out, and vibrate the grout. I installed the motor and pump and then laser aligned the motor to the pump. Continue down to the next picture or the first set of data collected on the new pump.

This is the first data collected after the new installation. The running speed or 1X is .88 in/s in the vertical position of the pump. I then collected phase readings between the pump, pump feet, metal base and then the concrete base. From the concrete to the metal base was out of phase. I then took out the trusty ball peen hammer and tapped the base; all you could hear under the pump feet was the hollow, empty sound. My heart had the same feeling. Next picture please. If I had only taken a ball peen and tapped the base before the motor and pump install.

SERVICE WATER "A" - Inboard pump - Vertical - Vel Spec 42 Orders8/19/2014 2:38:16 PM

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0.8839 in/s3581 CPM1 ordersCursor A:O/All 0.9096 in/s 0-pk

Runnng speed before the repair of the base.

8/19/2014 2:38:16 PM O/All 0.9096 in/s 0-pk 3581 RPM

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) 0.91

00.91

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We then proceeded to drill holes with an 11/32” drill bit and tap for grease fittings around the hollow areas. We had close to 12 holes spread throughout and then proceeded to pour the epoxy using a funnel. After pouring in as much as we could we then pumped the rest in with a grease gun. In all 4 ½ gallons of the Chock Fast Red went into the base, I never would have thought that much would go in. We let the epoxy set up for a few days.

This is the data collected after the epoxy had set up for a few days. The running speed (1X) was now down to .08 in/s., would this be a good definition of looseness? I believe it would.

We later did the other base and it held 5 gallons of the epoxy. The epoxy worked great. Tip; if you use the epoxy, put it on a warm heater or something similar to heat it up, you can then pour it in using a funnel and then finish it off with a grease gun. Another tip; block the ends of the metal base plate with a wooden, cut to fit piece and then silicon around the wood. Also secure the wood. If you do not the epoxy will ooze out the ends. Another tip; Plan your drilled holes and have plenty of grease fittings, the epoxy will harden in a short time. You can take the fittings out later. One more tip; have plenty of holes, the air needs to escape or the grease gun may warp your frame.

I hope this helps someone to understand the importance of a good base for our pumps and motors. The data went from .88in/s to .08in/s, I could not believe it. I had read about this type of looseness on this board and now experienced it. It is not always about misalignment, bearings etc…. I dare say this new pump and motor would not have lasted long or experienced a long life because of the loose base

SERVICE WATER "A" - Inboard pump - Vertical - Vel Spec 42 Orders12/19/2014 8:28:05 AM

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0.08261 in/s3589 CPM1.014 ordersCursor A:O/All 0.1027 in/s 0-pk

Running speed after base repair.

12/19/2014 8:28:05 AM O/All 0.1027 in/s 0-pk 3540 RPM

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0.46

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