On (b)(6) 2011, at (b)(6), the customer reported that for the vario single hl20 4-pumps (b)(4) when the power switch for the pump module is turned on, and the pump module rpm adjust knob is off (not used), the pump motor and rotor begin to turn very fast, up to 250 rpm then abruptly stops and gives an error message.The hospital reported this to the maquet service representative on (b)(6) 2011.(b)(4).
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(b)(4).Maquet cardiopulmonary (b)(4) provides product failure investigation, analysis, and resolution for the device described in this report.The service technician traced the problem to the motor control board.The motor control board was replaced with a new board.The defective board was not returned to the manufacturer.(b)(4).
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