in the step 508 it is determined that the mode for the system 100 is u201c auto u201d then a step 518 follows in which the system 100 mode is operated as u201c auto u201d thereafter the method 500 proceeds with determinations in the step 520 of whether the system 100 continues in u201c auto u201d mode if not then a next 522 determines whether manual u201c man u201d mode is selected if not then the method returns to the step 506 if manual u201c man u201d mode is then selected based on the determination in the step 522 a next step 524 determines if the manual pushbutton 105 of the system 100 i e corresponding to the pushbutton switch 450 of the circuit 400 is on closed circuit or off open circuit if the step 524 determines the system 100 is on via the pushbutton 105 then the motor 404 is turned on in a step 526 the motor 404 thereafter remains powered on unless and until a step 528 turns off or resets the motor 404 for example based on passage of time of operations or other characteristics after the step 528 the method 500 returns to the step 506 if alternatively the step 520 determines that u201c auto u201d mode continues then a.