User`s guide

5-3
Maintenance and Troubleshooting 5
Troubleshooting
Troubleshooting
Electrical Problems
Problem Possible cause Solution
Pump does not operate and Power cord unplugged. Check for power.
power indicator does not light. Fuse blown. See ‘Electrical installation’ in
Incorrect voltage setting. Chapter 3.
Slave pump does not operate. GSIOC cable not connected Check GSIOC cable is connected
or incorrectly connected. correctly to the socket on the 305.
Incorrect GSIOC identity Check GSIOC identity number is set
number. correctly.
Message ‘Pump X missing’ Incorrect GSIOC identity Set the GSIOC identity correctly.
number set in pump X. Refer to Chapter 3.
Pressure reading does not Output signal from
Check the pressure signal output is
appear on display, or manometric module or properly connected.
adapter not connected.
High pressure limit menu The pressure signal must be
does not appear. connected directly to the Master
pump, not to a slave.
Invalid settings flashing Refill time is too long for Lower the Refill time and flow rate.
the flow rate programmed.
Pump does not stop at end Not programmed. To stop the flow at the end of a
of program. method program, you must program
a flow rate of 0 mL/min. With a
gradient system, you must program
a composition point and then a flow
rate of 0 mL/min.