- Error: Pump A (CO2) primary temperature range error (5.8 C)
- Primary prechiller is out of tolerance (1.5-5 C)
- ACQUITY UPC2
The prechiller for primary pump A (CO2) is unable to maintain temperature tolerance of 1.5-5 C due to low CO2 inlet pressure (less than 720 psi).
FIX or WORKAROUND
Investigate the CO2 source pressure (requirement is ~60 bar or 850 psi).
- If the source is a tank, replace the CO2 tank with a full tank.
- If source is in-house supply from bulk, check the pressure setting on the regulator or bulk source.