Chromeleon Diagnostics Messages - Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual

UltiMate 3000 Series:
NCS-3500RS and NCP-3200RS

6.4 Chromeleon Diagnostics Messages

If the module fails a diagnostics test, perform the instructions given here and repeat the
test. If the module fails the test again, contact Thermo Fisher Scientific Service for Dionex
HPLC Products.
General Leak Test failed
Probable Cause
The pressure drop has been too
high.
The pressure level has not been
reached in time.
The initial pressure has not been
reached within the first minute.
The pressure drop during
relaxation has been too high.
Detailed Leak Test failed
Probable Cause
The capillary connections are
leaking.
The check valve is leaking.
The piston seals are leaking.
NC pump
Page 160
Remedial Action
Check the fitting plug on the pump outlet for tightness.
Visually inspect all fluid connections for liquid droplets.
Check all fluid connections for indications of leakage.
Replace the valve cartridge (inlet check valve) (→ page 182).
If you still suspect there is a leak, run the detailed leak test.
Remedial Action
Check all fluid connections for indications of leakage. Find and
eliminate the source for the leak.
Tighten leaking connections. If the leakage continues, replace the
capillaries.
Capillaries with Viper fitting connections
Perform this sequence of actions: Remove the capillary, carefully
clean the capillary ends by using a cloth or tissue wetted with
isopropanol, and reinstall the capillary. If the connection continues to
leak, install a new capillary.
Replace the valve cartridge (outlet check valve) (→ page 182) and
repeat the test.
Replace the valve cartridge (inlet check valve) (→ page 182) and
repeat the test.
Replace the piston seals (→ page 194).
If the NC pump fails test after the flow selector (in a Classic flow
meter) has been replaced, take the following steps:
1. Retighten the four capillary connections of the flow selector
(→ Fig. 79, page 204) as tight as possible with your hand.
2. Retighten the connections from the pump heads to the flow meter.
Clean the capillary ends.
Operating Instructions