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430-95215-003.book Page 4 Tuesday, December 13, 2005 2:10 PM 7- 4 7) Alarms and Troubleshooting CODE MESSAGE POSSIBLE CAUSE CORRECTIVE ACTION N250 Door open while pumping Pump door opened while operating. Close door with cassette inserted. N251 Cassette Test Failure Faulty cassette, proximal or distal occlusion or air in cassette detected at start up. Check clamps, manually reprime set, close door. Backprime into line B tubing or syringe if appropriate. If alarm recurs on retest, replace set. If alarm repeats, replace infuser. N252 Depleted Battery Too much time on battery power. Plug into AC (mains) power. N253 Hard lockout Violation The use of the [STOP] key during delivery, or opening the door, while lockout is enabled. Unlock lockout switch. N254 Hard lockout Enabled Pressing of any key except [STOP] during delivery while any alarm is active and lockout is enabled. Unlock lockout switch. N255 Soft lockout Violation The use of the [STOP] key during delivery, or opening the door, while lockout is enabled. Unlock lockout by pressing the decimal key, followed by 9, 6, & 3 on the keypad. N256 Soft lockout Enabled Pressing of any key except [STOP] during delivery while any alarm is active and lockout is enabled. Unlock lockout by pressing the decimal key, followed by 9, 6, & 3 on the keypad. 430-95215-003 (Rev. 10/05)
