Initial Filling; Filter Disassembly/Assembly - STA-RITE SYSTEM 3 Owner's Manual

Hazardous pressure.
Can cause severe in-
jury or major property
damage from tank
blow up.
Release all pressure
and read instructions
before working on filter.
HOLD
REMOVE
PLUG
Figure 3 - Hold drain fitting and re-
move drain plug to drain filter.

FILTER DISASSEMBLY/ASSEMBLY

To avoid equipment damage and personal injury, never change handle
position on control valve while pump is running.
BEFORE DISASSEMBLING FILTER:
1. STOP PUMP.
2. OPEN air release valve and drain fitting.
3. WAIT until all pressure is released and water drained from filter tank
and system before loosening clamp knobs.
Disassembly:
1. Backwash filter according to instructions under "Filter Backwash
Procedure", Page 8 (when first filling a new filter, omit this step).
2. Stop pump.
3. Open air release valve (Key No.1, Page 10) on top of filter tank to re-
lease all air pressure from inside of tank and system.
4. Remove filter drain plug (Key No. 17B, Page 10) and drain all water
from tank (see Figure 3). Hold drain fitting securely in filter body to avoid
losing sand.
5. To equalize flange stresses, loosen clamp knobs alternately (that is, on
opposite sides of tank) around tank. Remove clamps.
6. Being careful not to damage Cord Ring (Key No.12, Page 10), lift upper
tank shell (Key No. 7, Page 10) off lower tank shell (Key No. 14, Page
10).
Filling Filter with Sand:
1. See Page 4 for correct sand grade and quantity.
2. Before pouring sand into filter, look inside and check internal assembly
(Key No. 8, Page 10) for broken or loose laterals (Key No. 8A, Page 10)
FOR
SAND
caused by shipping damage. Replace if necessary.
REMOVAL
ONLY
3. To eliminate stress on laterals (Key No. 8A) fill tank half-full of water be-
fore loading sand.
4. When full, top of sand bed should be about 12-1/2" (31.75 cm) below
top of distributor (about 1-1/2" (3.8 cm) below tank flange (see Figure 2).
5. Wash all sand and dirt away from cord ring sealing area.
6. Assemble filter according to instructions, pages 6 and 7.
Assembly:
1. Remove cord ring slowly to avoid stretching or tearing it.
2. Inspect cord ring (Key No. 12, Page 10) for cuts, nicks, etc. If cord ring
is damaged, deformed, or has lost its resiliency, replace with a new one.
3. Clean cord ring area of tank shell (both halves) and cord ring.
4. Carefully install cord ring and upper tank shell (Key No. 7, Page 10).
NOTICE: Do not lubricate cord ring. Lubricants attract dirt and grit and
may (especially when petroleum based) damage cord ring and void war-
ranty.
NOTICE: Be sure upper tank shell contacts cord ring surface evenly and
seal area is clean and free from dirt.
6