- 1). Look for kinks in the hoses that connect and from the filter. Kinks in the hoses can block water circulation and affect the pressure reading.
- 2). Turn on the filter and let it run for a two minutes. Locate the pressure gauge near the top of side of the filter.
- 3). Read the pressure gauge. The reading will be measured in pounds per square inch (psi) and should fall somewhere between the range of zero and 40 (most gauges).
- 4). Look for color coded indicators around the perimeter of the gauge's face panel. These indicators can signal ranges for low, normal and high pressure regions.
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