Where blood-channel cleaning and waste removal occur in the instrument
Allocate wash fluid, contact time, soaking and waste removal by the source of proteins, cells and deposits. Evaluate blockage trends, residue and restart recovery after consecutive samples, not pump free flow alone.
Cleaning must cover sampling, reaction and detection branches; waste removal must handle simultaneous inflow. After restart, check blanks and channel state before resuming sample measurement.
Product responsibilities in this operation
Diaphragm pumps perform suitable liquid supply or aerated aspiration in this task. Confirm inlet phase, branch location and outlet destination separately, then check each branch's operating point.
Compare DPL30, DPL60 and DPL30H by actual supply load. Wash-head, valve, tubing and container resistance jointly determine installed flow; check the supply window and receiving position together.
DPGL800 handles gas or gas–liquid aspiration permitted by its specific configuration. Check inlet gas content, foam, peak inflow and container vacuum; use a separately suitable solution for continuous liquid-only transfer.
For this operation, confirm: Protein, cell and deposit locations; permitted wash or soak sequence; channel flow; foam and peak drainage; waste-container status; post-maintenance blank and first sample.
Organize the sequence by actual architecture
- Divide cleaning segments by protein, cell and deposit locations; define wash fluid, contact or soak time and permitted cleaning sequences.
- Use the corresponding supply branch to deliver wash fluid into channels requiring recovery; confirm the actual through-path and installed flow.
- Organize waste aspiration by inlet gas–liquid state, checking pooling, foam, full containers and isolation after faults.
- Check channel blanks, residue and flow recovery after consecutive samples, shutdown and maintenance separately, recording blockage trends and affected channels.
Define operating conditions for this task
| To define | Details |
|---|---|
| Actual operating conditions | Protein, cell and deposit locations; permitted wash or soak sequence; channel flow; foam and peak drainage; waste-container status; post-maintenance blank and first sample |
| Acceptance target | Verify wash contact and flow through each affected sampling, reaction or detection branch. Check residual liquid, peak drainage and channel blanks after consecutive whole-blood samples, shutdown and maintenance. |
| Fault localization | Protein or cell deposits can restrict a branch while the pump still runs. Inadequate contact, foam, dry aspiration or a full waste vessel can leave residue and delay channel recovery. |
Further technical reading
Compare product configurations by the roles on this page
| Product | Configuration option | Conditions to verify |
|---|---|---|
| DPL30 liquid diaphragm pump | Liquid supply or auxiliary circulation | Select by installed resistance, actual wash or working fluid and task window |
| DPL60 liquid diaphragm pump | Liquid supply or auxiliary circulation | Judge by peak demand and installed operating point, not free flow alone |
| DPL30H high-backpressure liquid diaphragm pump | Liquid branches requiring higher backpressure capability | Calculate pressure budget and actual flow first, then confirm interfaces and materials |
| DPGL800 gas–liquid diaphragm pump | Suitable gas–liquid aspiration or container-vacuum branches | Confirm inlet medium and waste architecture; not for continuous liquid-only transfer (100% liquid) |
Validate operation results at the receiver
Verify wash contact and flow through each affected sampling, reaction or detection branch. Check residual liquid, peak drainage and channel blanks after consecutive whole-blood samples, shutdown and maintenance.
Compare channel flow and the first post-cleaning sample with the method requirements. Record deposit or blockage trends separately from dilution-ratio and counting results so a clean-looking wash station does not conceal a channel fault.
Locate abnormalities and restore the next operation
Protein or cell deposits can restrict a branch while the pump still runs. Inadequate contact, foam, dry aspiration or a full waste vessel can leave residue and delay channel recovery.
Hold the affected channels and stop additions that exceed available drainage. Apply the permitted cleaning or maintenance procedure, then verify channel flow, blanks and the first sample before restoring automatic measurement.
Cleaning requirements follow the actual channel architecture. Recovery of a metering path does not establish the stability of a separate sheath-fluid branch.
References
View references (5)
- [1]FOREACH DPL30 liquid diaphragm pump: configurations and specifications
- [2]FOREACH DPL60 liquid diaphragm pump: configurations and specifications
- [3]FOREACH DPL30H high-backpressure liquid diaphragm pump: configurations and specifications
- [4]FOREACH DPGL800 gas–liquid diaphragm pump: configurations and specifications
- [5]Sysmex hematology analyzer reference: impedance and fluorescence flow-cytometry configurations