On arrival, call Richard and left message notify him I was on site. Checked in with manager. Checked in with mall security. Found medium temp walk-in temp about 60degs inside. Gained roof access. Found condensing unit not running. Found relatable high pressure switch was tripped. Reset switch and condensing unit immediately came on. Pressures were reading normal. Found evap coil with a lot of build of debris. Cleaned evap coil. Condensing fan motor amps are 0.38. Condensing fan motor capacitor is 4/4uf. Compressor amps are 5.45. Finding nothing out of the ordinary. Will come back tomorrow to follow up. Obtained signature on work acknowledgment.