Arrived on-site to check CMA undercounter dishwasher. brought machine into operation to check operation. found chemical corroded rinse roller, hole in pich tube and tubing becoming hard and brittle due to chemical. technician recommends replacing detergent and rinse additive tubing and roller assembly. machine in service. 9/7/18 arrived on-site to repair CMA under-counter dishwasher. replaced detergent and rinse tubing, squeeze tubes and broken elbow fitting. brought dishwasher into operation, primed chemicals, detergent and rinse aid. checked operation of machine very good. tech did notice some water in bottom of machine. looked for any leaks - non apparent. checked all hose connections okay. booster tank looks good, not leaking. checked vacuum breaker and top connections okay - no leakage. possibility of pump motor leaking, but no visual leakage apparent.machine in operation. if water leak is more prevalent, advise replacement of pump motor assembly.