My evaporative cooler pads have dry Streaks or patches
I have an evap. Cooler for my shop. During the day my pads have dry streaks in them, and they only get wet haif way down. The unit is still factory spec, it has new pads and all water lines are clear. Is this normal or is there a potential problem with my unit.
A small number of narrow streaks are probably not going to affect the performance a noticeable amount but a large number of wide streaks will give a notable deterioration in capacity. If the dry areas are in one corner it could mean the cooler is not level. If it only happens in very hot weather (or is much worse in hot weather) it may mean the pump is undersized. Otherwise it may simply be a problem with that brand and model. Try and find someone else with the same model and see if is a problem for them.