Schambeck SDS 9414I, Operation Manual, Page: 30 / 45

SDS 9414i HPLC Pump
Version: 2.2 (July 2007) Page: 30 / 45
9. SERVICE & MAINTENANCE
The need of maintenance is limited to the mechanic of the pump.
It is recommended to oil all moving parts, as bearing and slide plates with sewing machine oil.
9.1 TROUBLESHOOTING
Problem Cause Elimination
No Flow - no solvent - check the level of the reservoir
- gas bubbles in the inlet tubing
or pump head - flush the inlet tubing and the pump head by activating the
purge function or using the plastic syringe to suck the air
bubbles out via the relief valve.
- solvent line interrupted - check the solvent inlet tube and the solvent filter, clean or
exchange the tube or filter
- pump is not running - check the fuses on the rear panel
- check the main power connection
- check the display concerning error messages
- check if a start delay time is programmed
- failure of the check valves - clean the check valves by using an ultrasonic bath, or
exchange the check valves
- broken piston - exchange the piston
Pressure
Fluctuation
- gas bubbles in the pump head - flush the inlet tubing and the pump head by activating the
purge function or using the plastic syringe to suck the air
bubbles out via the relief valve.
- leakage in the system - exchange or fasten the leaking parts
- faulty check valve - clean the check valves by using an ultrasonic bath, or
exchange the check valves
- piston seal leaking - exchange the piston seal
- imminiscible solvents in the
pump - use an intermediate solvent which mixes with both
solvents
No Pressure - faulty check valves - clean the check valves by using an ultrasonic bath, or
exchange the check valves
- leakage in the system - exchange or fasten the leaking parts