subroutine Pump1_MainSolver
    
    use Pumps_VARIABLES
    
    implicit none
    
    
    !Call DrillingConsole_ScrLEDs
    Call Pumps_Inputs
              
              
    if (PUMP(1)%Throttle<=0.e0) then
        PUMP(1)%K_throttle = 1
    end if
              
              
    if((any(PUMP(1)%AssignmentSwitchh==(/1,2,3,4,9,10/))) .and. (PUMP(1)%Switch==-1) .and. (PUMP(1)%K_throttle==1) .and. (PUMP(1)%PowerFailMalf==0) .and. (PUMP(1)%Failure==0) .and. (Pumps_IsStopped == .false.)) then
        !!print*, 'pumps on'
        PUMP(1)%SoundBlower = .true.
        !Call SetSoundBlowerMP1(PUMP(1)%SoundBlower)
        !MP1BLWR = 1
                   
        !========================== Pump 1 Rate limit ==========================
        if (((PUMP(1)%N_new-PUMP(1)%N_old)/PUMP(1)%time_step)>PUMP(1)%RateChange) then
            PUMP(1)%Speed =(PUMP(1)%RateChange*PUMP(1)%time_step)+PUMP(1)%N_old
        else if (((PUMP(1)%N_old-PUMP(1)%N_new)/PUMP(1)%time_step)>PUMP(1)%RateChange) then
            PUMP(1)%Speed = (-PUMP(1)%RateChange*PUMP(1)%time_step)+PUMP(1)%N_old
        else
            PUMP(1)%Speed = PUMP(1)%N_new
        end if
        !=======================================================================
                       
        Call Pump_OnMode_Solver(1)
        
        
    else         
        if ((any(PUMP(1)%AssignmentSwitchh==(/1,2,3,4,9,10/))) .and. (PUMP(1)%Switch==-1) .and. (Pumps_IsStopped == .false.)) then
            PUMP(1)%SoundBlower = .true.
            !Call SetSoundBlowerMP1(PUMP(1)%SoundBlower)
        else
            PUMP(1)%SoundBlower = .false.
            !Call SetSoundBlowerMP1(PUMP(1)%SoundBlower)
        end if
        
        if ((any(PUMP(1)%AssignmentSwitchh==(/1,2,3,4,9,10/))) .and. (PUMP(1)%Switch==-1) .and. (Pumps_IsStopped == .false.) .and. (PUMP(1)%PowerFailMalf==0) .and. (PUMP(1)%Failure==0)) then
            !MP1BLWR = 1
        else
            !MP1BLWR = 0
        end if
        
        
        Call Pump_OffMode_Solver(1)
        !Call ClosePump1() 
        PUMP(1)%K_throttle = 0
    
    end if
    
    PUMP(1)%N_old = PUMP(1)%Speed
    
    
    print*, 'Q , P , Hp , N='
    print*,  PUMP(1)%Flow_Rate , PUMP(1)%StandPipe_Pressure , PUMP(1)%Hydraulic_HorsePower , PUMP(1)%Speed
    pause
              
              
end subroutine Pump1_MainSolver