Large Pool Backwash Procedure

• Document No.

• Audit Title

• Client / Site

• Conducted on

  Date

• Prepared by

• Location
  Address

• Personnel

Turn off all 3 chemicals;

• Sodium hypochlorite in chemical store

  Yes

  No

  N/A

• CO 2 in chemical store

  Yes

  No

  N/A

• PAC in filter room

  Yes

  No

  N/A

Turn Pool Return Valve PRV at bottom of ladder below large pool

• Pull handle outwards and then turn upwards to closed position

  Yes

  No

  N/A

Close the skimmers valve

• Turn the red valve to the closed position

  Yes

  No

  N/A

Turn off both Heating valves

• V12 and V11 red valves to closed position

  Yes

  No

  N/A

All three filters must be back washed in turn one by one not together

Filter A Backwash

• Filter A; Close A1; close A3 and open A2

  Yes

  No

  N/A

• Turn on scourer then open A5 and leave for 2 minutes

  Yes

  No

  N/A

• Close A5 then turn off scourer

  Yes

  No

  N/A

• Open A3 and run until clean (approx 5 mins)

  Yes

  No

  N/A

• Simultaneously close A2 and open A1

  Yes

  No

  N/A

• Bleed air from the filters by opening A4 until water flows down looking glass

  Yes

  No

  N/A

Filter B Backwash

• Filter B; Close B1; close B3 and open B2

  Yes

  No

  N/A

• Turn on scourer then open B5 and leave for 2 minutes

  Yes

  No

  N/A

• Close B5 then turn off scourer

  Yes

  No

  N/A

• Open B3 and run until clean (approx 5 mins)

  Yes

  No

  N/A

• Bleed air from the filters by opening B4 until water flows down looking glass

  Yes

  No

  N/A

• Simultaneously close B2 and open B1

  Yes

  No

  N/A

Filter C Backwash

• Filter C; Close C1; close C3 and open C2

  Yes

  No

  N/A

• Turn on scourer then open C5 and leave for 2 minutes

  Yes

  No

  N/A

• Close C5 then turn off scourer

  Yes

  No

  N/A

• Open C3 and run until clean (approx 5 mins)

  Yes

  No

  N/A

• Simultaneously close C2 and open C1

  Yes

  No

  N/A

• Bleed air from the filters by opening C4 until water flows down looking glass

  Yes

  No

  N/A

Turn on make up water (BLUE Handled top up valve next to top of steps below pool)

Turn both heating valves back on

• Turn red valves V11 and V12 to the OPEN position

  Yes

  No

  N/A

Turn Pool Return Valve PRV at bottom of ladder below large pool

• Pull handle outwards and then turn downwards to marked position between the two black marks

  Yes

  No

  N/A

Turn chemicals back on

• PAC

  Yes

  No

  N/A

• Hypo

  Yes

  No

  N/A

• CO2

  Yes

  No

  N/A

Turn off TOP UP when water level is back above trough

Turn Skimmers valve back to the open position