(b)(4).This complaint is related to emdr #1828100-2016-00127.During the laboratory evaluation for emdr #1828100-2016-00127, the pst observed after approximately five hours of testing the flow display on the device under test (dut) console had dropped to 2.2 liters per minute (l/min).Speed remained at 2010 revolutions per minute (rpm).The reference flow device remained steady at 4.5 l/min.Approximately 1-1/2 hours later, the flow display had further dropped to 1.7 l/min.The dut console was then moved (picked up and tipped around a bit) which caused the flow reading to go up to around 3.0 l/min.And finally to 4.5 l/min.(original setting) with more physical manipulation of the console.Subsequent agitation/manipulation by the pst of the console, flow sensor, internal cables and circuit boards, and the flow sensor cable at the rear of the console could not duplicate the fluctuation of the flow rate display.Residue was observed on the flow sensor cable connector and the sensor mating connector at the rear of the console.Additional testing using cool spray and a heat gun giving each temperature extreme several minutes to ¿soak¿ into the device while in operation.No significant variation in flow was observed.The device was sent to service for further evaluation.
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