We arrived here for the outdoor unit not cooling. Client had the thermostat off upon arrival, we turned the thermostat on. We proceeded outside the out door unit came on immediately. The start amps were very high and had abnormal readings for Freon. After about five minutes of running the unit shut off. We went into the attic and found the water safety switched was tripped. We also found a dirty air filter causing extreme suffocation to the unit. We showed our findings to our client and he elected to install a blowout valve and compressor saver to his system today. Once installed we showed him the work that was preformed and showed him that the components were in manufacture specifications.our client did not have a filter to install, he will purchase an air filter to install immediately and we did leave the unit cooling without an air filter.