Sampler S4.2-002 History

[princeri1]

• Frame
  • Finished January 2023
• PCB
  • SN: P1.0-002
• MC
  • SN:

[princeri1]

April 2023-Filters Dissolving in Capsules
Incompatible material?

May 2023
Filter material Changed from Mixed- Cellulose Nitrate (MCE) to Cellulose Nitrate (CN)
Dissolving filter problem resolved

[princeri1]

April 2023- Flow meter not working
Flow meter has stopped sending interrupts to PCB- Investigation ongoing

***Update
Flow meter tested and is electrically sound problem seems to be mechanical issue

May 2023- Flow meter fixed.
Small bits of material found to be clogging flow meter -Potentially related to dissolving filter debris
New filters have fixed problem

[fieldja]

Experiencing issues with clogging either the valves or filters. Using three-day old fish water, filters 1 and 2 clogged. Filter 0 did not clog with tap water. No other valves have been tested.

Assuming either a valve issue or biological growth. Consider that growth could be concentrated on valves that had fish water going through them. Seems unlikely that it is a growth clogging tubing itself, we've never had issues with the (PETE?) tubing clogging.

Very old fish water was used when testing volume VS temperature on this, Hendy wonders if maybe some of that wasn't cleaned out (he did run a 6% bleach flush, maybe needed to be stronger?).

Status: Currently needs troubleshooting.