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Filter pressure high or low, or powder at the returns.

A pool service technician should open and service the filter, because trapped air can throw the lid.

Customers put it like this

  • filter gauge is way up
  • gauge says zero
  • white powder coming out of the jets
  • sand in the pool
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Stop first if

  • Anyone plans to loosen or tighten a clamp or lid with the system running.Stop. A technician shuts down and relieves pressure first. Stay clear of the filter.
  • After start-up, water leaks under the clamp, or pressure builds with no steady stream at the air relief.Cut power at the breaker if it can be done without risk. Stand clear. Call a technician.
  • Dry DE powder could go airborne.Stop and leave the handling to a technician with breathing protection.
01

Ask on the call

6

Homeowner? These are the questions a good technician will ask you. Having the answers ready makes the first visit count.

  1. What does the gauge read now, and at what pump speed?
  2. What did it read right after the last cleaning?
  3. Does the gauge drop to zero with the pump off?
  4. Is it a cartridge, sand or DE filter?
  5. Did the pump stop or lose power before powder showed up?
  6. Did anyone change a valve or clean the filter recently?
02

Bring

5
  • Replacement pressure gauge
  • Respirator for DE work
  • Gloves and eye protection
  • Garden hose with nozzle
  • Flashlight
03

Check on site

6
  1. See that the gauge reads zero with pressure relieved and rises when running.
  2. Compare the reading with the clean baseline at the same pump speed.
  3. If high, make sure every valve after the filter is open before cleaning.
  4. If low, with the pump off, clean the baskets and check the pot for air.
  5. Before opening, a technician shuts down all power, opens the air relief and waits for zero.
  6. At start-up, everyone stands clear until a steady stream shows at the relief.
04

Keep on the record

4
  • Clean baseline pressure with pump speed
  • Current pressure with pump speed
  • Cleaning or backwash dates
  • Photos of elements, bed or powder found

General guidance for a qualified person, not a finding about any home. The person on site decides.