Agilent Technologies 1200 series - Page 102

102 Agilent 1200 Preparative Pump User Manual
6 Troubleshooting and Diagnostics
Leak Test
Maximum Allowed Flow Rate exceeded for Piston 1
Maximum Allowed Flow Rate Exceeded for Piston 2
Probable cause Suggested actions
1 Externally leaking inlet or outlet valve in
channel 1.
Ensure the valves are installed correctly. Tighten
the valves.
2 Internally leaking inlet valve in channel 1
(back flow).
Clean or replace the inlet valve in channel 1.
3 Internally leaking outlet valve in channel 2
(back flow).
Clean or replace the outlet valve in channel 2.
4 Leaking seal or scratched plunger in channel
1.
Exchange the pump seals in channel 1. Check
the plunger for scratches. Exchange if
scratched.
5 Loose or leaky fitting or capillary or fitting in
channel 1.
Tighten fitting or replace capillary if necessary in
channel 1.
Probable cause Suggested actions
1 Externally leaking inlet or outlet valve in
channel 2.
Ensure the valves are installed correctly. Tighten
the valves.
2 Internally leaking inlet valve in channel 2
(back flow).
Clean or replace the inlet valve in channel 2.
3 Internally leaking outlet valve in channel 1
(back flow).
Clean or replace the outlet valve in channel 1.
4 Leaking seal or scratched plunger in channel
2.
Exchange the pump seals in channel 2. Check
the plunger for scratches. Exchange if
scratched.
5 Loose or leaky fitting or capillary or fitting in
channel 2.
Tighten fitting or replace capillary if necessary in
channel 2.