Pentair S8D110, S7D75 User Manual
VERTICAL GRID DE FILTERS
O W N E R’ S M A N U A L
INSTALLATION, OPERATION & PARTS
MODELS
S7D75 S8D110
Sta-Rite Pool/Spa Group U.S. PATENT NO. 4995523 (Other patents pending)
293 Wright Street, Delavan, WI 53115
International: 262-728-5551, FAX: 262-728-7550
www.starite.com
Union City, TN • Delavan, WI • Mississauga, Ont. • Murrieta, CA
© 2004, Sta-Rite Industries Printed in U.S.A. S284 (Rev. 4/20/04)
This manual should be furnished to
the end user of this filter; its use will
reduce service calls and chance of injury and will lengthen filter life.
2
VERTICAL GRID DE FILTERS
To avoId unneeded service calls, prevent possible injuries, and get the most
out of your filter, READ THIS MANUAL CAREFULLY!
The Sta-Rite System 3 Vertical Grid DE Filter:
• Is designed to filter water for swimming pools.
• Is an excellent performer; durable, reliable.
Table of Contents
Safety Instructions .......................................................................................3
General Information....................................................................................4
Installation ..................................................................................................5
Specifications..............................................................................................6
Initial Startup...............................................................................................7
Filter Disassembly / Assembly .....................................................................8
Cleaning the Filter.......................................................................................9
Filter Backwash Procedure.......................................................................9
Manual Filter Cleaning Procedure..........................................................10
Chemical Cleaning Procedure................................................................11
System Inspection/Winterizing ..................................................................12
Troubleshooting Guide..............................................................................13
Repair Parts List ...................................................................................14-15
Warranty...................................................................................................16
3
READ AND FOLLOW SAFETY
INSTRUCTIONS!
This is the safety alert symbol. When you see this symbol on your filter
or in this manual, look for one of the following signal words and be alert
to the potential for personal injury.
warns about hazards that will cause death, serious personal in-
jury, or major property damage if ignored.
warns about hazards that can cause death, serious personal in-
jury, or major property damage if ignored.
warns about hazards that will or can cause minor personal injury
or property damage if ignored.
NOTICE indicates special instructions not related to hazards.
Carefully read and follow all safety instructions in this manual and on equip-
ment. Keep safety labels in good condition; replace if missing or damaged.
Incorrectly installed or tested equipment may fail, causing
severe injury or property damage. Read and follow instructions
in owner's manual when installing and operating equipment.
Have a trained pool professional perform all pressure tests.
1. Do not connect system to a high pressure or city water system.
2. Use equipment only in a pool or spa installation.
3. Trapped air in system can cause explosion. BE SURE all air is out of system
before operating or testing equipment.
Before pressure testing, make the following safety checks:
• Check all clamps, bolts, lids, and system accessories before testing.
• Release all air in system before testing.
•Tighten Sta-Rite pump trap lids to 30 ft. lbs. (4.1 kg-cm) torque for testing.
•Water pressure for test must be less than 25 PSI (172 kPa).
•Water Temperature for test must be less than 100oF. (38oC).
• Limit test to 24 hours. After test, visually check system to be sure it is ready
for operation. Remove pump trap lid and retighten hand tight only.
NOTICE: These parameters apply to Sta-Rite equipment only. For
non-Sta-Rite equipment, consult equipment manufacturer.
If filter clamps are
adjusted or removed
under pressure,
tank may explode,
causing severe injury or
major property damage.
BEFORE WORKING
ON FILTER:
1. Stop pump.
2. Open air release
valve.
3. Release all pressure
from system.
Filter pumps require
hazardous voltage
which can shock, burn,
or cause death.
BEFORE WORKING
ON PUMP OR MOTOR
Disconnect power
to motor at main
circuit breaker.
Discharge motor
capacitor to ground.
4
GENERAL INFORMATION
• Clean a new pool as well as possible before filling pool and operating filter.
Excess dirt and large particles of foreign matter in the system can cause serious damage to the filter and pump.
• With a diatomaceous earth (DE) filter system in place and operating correctly, clean water is returned to the pool faster than pool water is being
contaminated. A typical pool installation will require approximately one
week to obtain and maintain the sparkle that your filter is capable of giving
you.
• DO NOT use more than the recommended amount of DE in your filter. To
do so can cause a buildup of DE and "bridging" between the elements
which will plug the filter.
If filter is improperly disassembled or assembled, it can explode under
pressure! To avoid danger of severe injury or major property damage,
always follow service instructions in this manual when working on filter!
NEVER operate this filter system at more than 50 pounds per square
inch (50 PSI/345kPa) pressure! Be sure filter pressure gauge operates
when system is operating. If pressure gauge is damaged or does not work, replace it.
Purge all air from system before operating system. NEVER operate filter
with air trapped inside.
• On a new pool installation, we recommend:
1. Disassemble the filter after the initial cleanup.
To prevent severe injury or major property damage, exactly follow "Filter
Disassembly/Assembly Procedure" on Page 8.
2. Remove and hose down the element assembly to remove contaminants.
• It is a good idea to remove the element assembly once a year and soak it in
a filter cleaning solution to remove accumulated body oils, etc.; see Page
11, "Chemical Cleaning Procedure".
• Cleaning interval is based on pressure differential, not on length of time fil-
ter is operated. Different water conditions will have different normal cleaning intervals. If backwashing filter is not possible, use "Manual Filter
Cleaning Procedure", Page 10, at regular intervals to clean filter.
• Check local codes for restrictions on backwash to waste piping, separation
tank requirements and spent D.E. disposal requirements.
Hazardous pressure.
Can cause severe
injury or major
property damage
from tank blow up.
Release all pressure
and read instructions
before working on filter.
5
INSTALLATION
Installation of filter should only be done by qualified, licensed personnel.
Filter mount must:
• Provide weather and freezing protection.
• Provide space and lighting for easy access for routine maintenance. (See
Figure 1 and Table II, Page 6, for space requirements.)
• Be on a reasonably level surface and provide adequate drainage.
• Be as close to pool as possible to reduce line loss from pipe friction.
Piping:
• Piping must conform to local/state plumbing and sanitary codes.
• Use Teflon tape or Plasto-Joint Stik' on all male connections of plastic pipe
and fittings. DO NOT use pipe compounds on plastic pipe; it will cause the
pipe to crack. Do not use sealant on unions—assemble them dry and hand
tight.
• Support pipe independently to prevent strains on filter or valve.
• Use 2” (51mm) pipe to reduce pressure losses as much as possible.
NOTICE: Filter may be located away from pool, but for adequate flow larger
pipe may be needed. Check local codes for remote installation.
• Fittings restrict flow; for best efficiency use fewest possible fittings.
• Keep piping tight and free of leaks: pump suction line leaks may cause
trapped air in filter tank or loss of prime at pump; pump discharge line leaks
may show up as dampness or jets of water.
• NOTICE: Overtightening can crack filter ports.
Valves:
• A check valve installed ahead of filter inlet will prevent contaminants from
draining back into pool.
• A check valve installed between filter and heater will prevent hot water
from backing up into filter and deforming internal components.
• Install Sta-Rite Two Position Slide Valve or Multiport Selector Valve with fil-
ter. See Table I.
• Filter ports and valve ports are furnished with union connections.
DO NOT use pipe sealants on union collar (nut).
• Use care before assembly not to damage union sealing surfaces or O Ring.
• To allow recirculation during precoat (if precoat pot is used), install a recir-
culation line with shut-off between pad return line and pump suction.
Electrical
• All wiring, grounding and bonding of associated equipment must meet local
and/or National Electrical Code standards.
1
Lake Chemical Co., Chicago, IL
Port Part
Size Number
Multi-port
2" 18201-0200*
Plastic Slide
2" WC212-134P*
TABLE I - Sta-Rite valves for
use with DE filters
NOTICE: Use of valves
other than those listed
above could cause
reversed water flow
through filters and
damage to internal filter components.
* Recommended for best energy
conservation.
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