Thermo Scientific thermoscientific Vanquish Pumps C, Operating Manual

Page: 204 / 296

8 • Troubleshooting
Page 204 Pumps C, Pumps F ( VC-Pxx, VF-Pxx)
Operating Manual
Message and Code Description and Remedial Action
Code 4116 The pressure signals are not
consistent. There may be air in the
working cylinder. The pressure calibration factor for the working piston is out of
range. Perform these steps:
1. Verify that the degasser is working.
2. Purge the pump.
Code 4119 Can’t start pump while alarm
is on. An alarm is present, for example, because leakage has been
detected. You can restart the pump flow only when the alarm is
no longer present. Mute the alarm by pressing the
MUTE ALARM
button on the pump keypad. Find and eliminate the source for the
alarm as suggested for the accompanying message.
Code 4120 The rear seal wash system has
run out of wash solution. This message alerts you only when the drop counter functionality
of the seal wash detector is enabled (standard setting).
• Verify that wash liquid is present in the seal wash reservoir.
• Inspect the seal wash lines across the entire flow path for
indications of blockage or leakage. Verify that all seal wash lines
are properly connected and routed. Replace the seal wash lines
as necessary (see
Replacing the Seal Wash Lines ( } page 131) ).
• Inspect the peristaltic tubing for indications of blockage or
damage. Replace the tubing as necessary (see
Replacing the Seal
Wash Lines ( } page 131) ).
• Verify that the peristaltic tubing is properly inserted in the seal
wash pump and that the lever of the pump is not blocked.
• Inspect the electrodes of the seal wash detector for
contamination or damage. Replace the seal wash detector as
necessary (see
Replacing the Seal Wash Detector (
}
page 134) ).
• Make sure that the seal wash liquid is sufficiently conductive
(see
Choosing the Seal Wash Liquid ( } page 71) ).
• Start an additional seal wash cycle from the Chromeleon
software. While the wash cycle is running, inspect the pump
heads. If droplets leave the pump head at the rear, the seal
wash seal is defective. Replace the seal wash seals (see
Replacing the Seal Wash Seals ( } page 154) ).
Code 4121 Piston seal leakage has
exceeded the recommended limit. This message alerts you only when the drop counter functionality
of the seal wash detector is enabled (standard setting).
Test the pump for piston seal leakage and take the recommend
action (see
Testing the Piston Seals for Leakage (
}
page 159) ).
Code 4122 The rear seal leak sensor
detects drops constantly. This message alerts you only when the drop counter functionality
of the seal wash detector is enabled (standard setting).
Inspect the electrodes of the seal wash detector for
contamination or damage. Replace the seal wash detector as
necessary (see
Replacing the Seal Wash Detector ( } page 134) ).
The message appears also when the percentage of water in the
seal wash liquid is too high. Observe the information about the
composition of the seal wash liquid in
Choosing the Seal Wash
Liquid ( } page 71) .