Agilent Technologies SD-1 User Manual page 66

6
Troubleshooting and Diagnostics
Troubleshooting Guide
Table 13
Probable cause
Clogged solvent inlet filter
Drain valve leaking
Erratic pressure
Table 14
Probable cause
Leak
Air in pump
Air bubble in tubing
Table 15
Probable cause
Loose inlet tubing connection
Worn flange in inlet tubing
Loose inlet check valve
Inlet filter partially clogged
Loose outlet tubing connection
66
Low flow
Erratic pressure
Air bubble in tubing
Suggested actions
Check and replace if necessary.
Repair leak in drain valve.
Suggested actions
Check and repair leaks.
1
Disconnect outlet fittings.
2
Degas solvent.
3
Divert flow to waste and pump at a
moderately high flow rate to prime pump.
Suggested actions
Tighten inlet fittings.
Remake inlet tubing flange.
Tighten 1/16 turn past the leak-point.
Clean or replace.
Tighten outlet fittings.
SD-1 Solvent Delivery - User Manual