Today I arrived and met with Allen. The packaged unit that serves the laboratory was off when I arrived. The condenser coil as blanketed with cottonwood and was washed before starting the unit. In addition to this the economized prefilters were also washed. I visually checked the blower compartment, air filter compartment and the controls compartment. The system was started in A/C mode and the temperatures were monitored while the coil was drying. The unit was not cooling well with a temp drop of 7deg. I checked the amp draw on the compressors and compressor #1 and #2 had low amp draws, high dome temperatures and the suction lines were not cold or even cool. The discharge lines were hot due to the hot compressors. The system was shut down quickly. I checked the low side pressures on both of these circuits and both circuits were just a and a little below 50psi. I know that this unit has already been measured for replacement however I did take photos of the data plate a