Uneven drying

It is presumed that the crown and loading at the presses is correct and consequently, moisture is even into the dryers.
1. Generally due to high moisture entering dryers.
— check press loading, felt conditioning system, draws and vacuums on dewatering elements.
2. Check and adjust draws at the wet end and into dryers.
3. Check steam pressure, temperature, and degrees of maximum superheat; adjust if necessary.
4. Check the stock freeness, fiber ratios, additive levels, and retention or drainage aid usage.
5. Check dryer temperatures for inadequate condensate removal.
— check siphons and condensate removal system at earliest opportunity.
6. Check the ventilation system for plugged nozzles, fan operation, system balance, and air temperature.
7. Check to ensure that system for removing non-condensables is operating correctly.