A clothing store in El Segundo, CA, was scheduled for spring preventative HVAC major maintenance. All air filters have been swapped out, belt tensions adjusted, amps and pressures checked. All other PM checklist items completed. Found their Carrier air conditioner, #4, wit ha burnt contactor and overheating condenser fan motor. Will
Returned to an office suite in El Segundo, California, to investigate a vibrating unit. Tech found the motor wheel broken, causing system to shake badly. Broken wheel caused damage to motor and housing. Will quote to replace housing, and also repair a refrigerant leak at the schraeder valve.