VGBA Checklist-WSM 2023

Here is a checklist your facility can use for compliance verification.

Download Check list HERE

Maxium Flow Rate & Total Dynamic Head

• Maxium flow rate is required in choosing the right drain cover. 
• Drain cover must exceed maximum flow rate. 
• Maxium flow rate is different from operation flow rate. 

Information needed to determine Maxmium Flow Rate: 

• Total Dynamic Head (TDH)-amount of pressure differential created by pump as it is operated. 
• Pump Model- specific performance curve chart- comes from the manufacturer with pumps. 

Figure out Maximum Flow Rate- must be done with water in the pool

1. Run the pump at the highest speed. 
2. Make sure the pump is running with the lowest resistance. Backwash filters, open all drains 100%, clean skimmers, remove fittings in returns. 
3. Watch gages to determine Total dynamic head (TDH)*. 
4. Plot TDH against the pump model-specific performace curve chart to get maximum flow rate. 

Figure out Total Dynamic Head (TDH) Watch vacuum and pressure gages during Maxmium Flow Rate testing. 

1. Multiple vacuum gage ready by 1.13
2. Multiply pressure gage ready by 2.31 
3. “A” total + “B” total = Total Dynamic Head