FOUND SUCTION PRESSURES SLIGHTLY HIGH, AND VERY LOW SUPERHEAT UPON ARRIVAL. BLOWER SPEED TAPS WERE PREVIOUSLY MOVED FROM 3 TON, TO 2 TON SETTING BASED ON HISTORY. SET CFM TO HIGH TO INCREASE 2 TON TAP SPEED, AND PRESSURES STILL SLIGHTLY OFF. MOVED SPEED TAP TO 2.5 TON SETTING AND NORMAL SPEED, PRESSURES STABILIZED WELL WITHIN SPECS. SYSTEM UP AND COOLING.