I agree with Bama Rambler, this is about as easy as it gets. You don't really have any plumbing to do since the pump configurations, at least in terms of plumbing, are nearly identical.
1. Remove electrical to existing pump by shutting off the power to the pool panel, checking to make sure no power is being sent to pump using an electrical tester, opening the electrical wires in the existing pump's electrical connection compartment (two hex screws on the upper right side of rear of pump motor allow access), and then removing the wires and conduit. The wires will be either black and/or red (line voltage) and green (ground). After unscrewing the screws that hold these three wires, unscrew the flex conduit from the pump housing and you should have the free conduit plus the three free wires. Move this aside. The motor may also have a 6 or 8 ga blue or green wire connected to the bonding terminal outside the pump's motor housing. Unscrew this and set aside.
2. Using your hands first, try to unscrew the unions to the pump's inlet and outlet. Move these in a counter-clockwise direction to losen. If you can't do this with your hands, use a large pipe wrench.
3. Once you've unscrewed these unions, you should now be able to remove the pump (unless it is screwed into the equipment pad, in which case you will need to remove those bolts). Remove pump, remove the union fittings that are screwed into the inlet and outlet of the old pump, and set both aside.
4. Screw old union fittings into the new pump. You may use teflon tape or plumber's sealant for this if needed. I didn't with my pump, but I did use a pipe wrench to fully seat those fittings.
5. Place new pump in same place on equipment pad as old pump. Make sure that o-rings on existing unions appear to be in good shape and grease them up with some silicone lube. Screw on the unions until secure with your hands. You may need a little help with the pipe wrench to prevent any leakage but don't over tighten, as this will pinch the o-rings in the threaded unions. Make sure both sides are secure. If the old pump was secured to the pad by bolts, secure the pump with those bolts.
6. Open the wiring compartment on the new pump, as described in it's installation manual. Thread the wires through the conduit opening into the compartment with the wiring terminals. Screw the flex conduit into the pump motor housing and screw the hot wires (red and/or black) to the "hot" or "line" terminals, and the green wire to the grounding terminal. Also, if there was a bonding wire, screw this into the new pump's bonding terminal.
7. Fill pump's strainer pot with water, grease up the strain pot lid's o-ring with some silicone lube, and replace the strainer pot cover so that it's tightly seated and sealed.
8. Restore power to pump. Assuming this has its own controller (e.g. the 010118 IntelliFlo), you will need to learn how to operate the controller. To just test the pump, push one of the four speed buttons on the control panel. By default, the pump will enter priming mode (3450 RPM, e.g. full speed) for about a minute as it primes itself. After this, it will return to the preprogrammed speed for that speed button you pushed.
9. Since the pump was controlled by a mechanical timeclock (e.g. one of the Intermatic clocks seen in the photo), then remove the timeclock "dogs" from the face of the clock so that power is always on to the pump, as the pump will control its own scheduling. If you plan to purchase an automation system (e.g. Intellitouch or EasyTouch), use the supplied RS485 wire included with the new pump to connect with the contoller. If you buy an automation panel, but it's not an Intellitouch, EasyTouch or SunTouch, you will need to purchase the Intellicomm module from Pentair for the automation system to control the motor.
10. RTFM.
BTW, my system does not yet have an automation panel, just a mechanical Intermatic time clock. I just let the pump's built-in scheduler control the pump run duration and speeds. In my case, it's quite simple because I have it run at high speed (about 3100 RPM) for three hours to properly skim and operate my automatic suction side cleaner, and then it shifts to about 1700 RPM to cycle my water for another 4-6 hours. I do ultimately need to figure out the best schedule to maximize water turnover and minimize electrical usage. For this pump, this would be around 1000 RPM.
Best of luck and ask questions.
