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Sand Replacement Guide for Pool Filters
publisherMAYGO
time2025/02/14
- Sand Replacement Guide
I. Required Materials
• New silica sand (0.4-0.8mm grade)
• Rubber gloves
• N95 respirator
• Sand vacuum tool
• Nylon bristle brush
• Garden hose
• Silicone-based lubricant
II. Step-by-Step Procedure
1.System Shutdown
De-energize pump motor. Set multiport valve to "Closed" position. Release system pressure via air relief valve.
2.Disassembly
Use filter wrench to remove tank clamp. Carefully lift off upper manifold assembly. Protect central standpipe during disassembly.
3.Media Removal
① Extract 90% old sand using industrial vacuum
② Flush residual particles with low-pressure washer
③ Inspect lateral assemblies for cracks (replace if >3 laterals damaged)
4.Tank Sanitization
Apply sodium hypochlorite solution (100ppm) for biofilm removal. Scrub diffuser plate with non-abrasive cleaner.
5.Media Loading
① Install protective cap on standpipe top
② Pour graded sand in 3" layers
③ Tamp each layer using vibration technique
6.Reassembly
Replace O-ring with manufacturer-approved seal. Apply lubricant in groove channel only. Torque clamp bolts to 15-18 ft-lbs in crisscross pattern.
7.Commissioning
Initiate startup sequence:
Backwash cycle (5 mins) → Rinse cycle (2 mins) → Normal operation
III. Professional Tips
• Recommended replacement interval:
Single-grade media: 36 months
Multi-layer media: 60 months
• Maintain 6" freeboard space below tank rim
• Perform 24-hour hydration before first use
Note: Always consult NSF/ANSI 50 standards for commercial pool applications. Record replacement date and sand grade on maintenance log.