How to Replace a Water Pump Pressure Control Switch

we like to prepare the new replacement parts with pipe dope or teflon tape before taking apart the old ones - that makes it quicker and neater in reassembling the pump pressure control switch with minimum water spillage. 

1.Reconnect the electrical wiring to the water pump control just as the previous  
  control was wired. For a 120V circuit, there will be four electrical wires, two
  line-in wires (hot and neutral wires) from the power source are connected to two
  screws which may be indicated as "Line" by markings on the switch, and two line-out
  wires (hot and neutral wires) bringing power out of the control and on to the water  
  pump. 

  If your pump pressure control switch is controlling a higher capacity submersible
  well pump, the electrical wires leaving the control may feed a separate heavy duty
  pump relay switch rather than going directly to the water pump.

2.Turn off any faucets you opened earlier to remove pressure from the water system.

3.Turn the water pump electrical power back on

4.Watch the water tank pressure gauge, and when you have about 20 psi in the system  
  (our gauge reading shown here is a bit too high) turn the water pump power back off   
  and check the system for leaks. 

  Wipe dry any wet parts, especially around the bottom of the pump control and where
  the pump control mounting pipe or fitting mounts into the water pump or water tank
  fitting. 

  Inspect your plumbing connections closely for water seeping out - if you have leaks 
  go back to step 1 or 2 and re-make your connections with better preparation of the
  threads with pipe dope or teflon tape.

How to remove the water pump pressure control switch ?