Stark 75140 Original instruction manual

19” 7-WAY VALVE IN GROUND POOL SAND FILTER
SAVE THIS MANUAL: KEEP THIS MANUAL FOR SAFETY WARNINGS, PRECAUTIONS, ASSEMBLY,
OPERATING, INSPECTION, MAINTENANCE AND CLEANING PROCEDURES. WRITE THE PRODUCT’S
SERIAL NUMBER ON THE BACK OF THE MANUAL NEAR THE ASSEMBLY DIAGRAM (OR MONTH
AND YEAR OF PURCHASE IF PRODUCT HAS NO NUMBER).
OWNER’S MANUAL AND SAFETY INSTRUCTIONS
ITEM #75140
FOR QUESTIONS PLEASE CALL OUR CUSTOMER SUPPORT: [phone] MON-FRI 9AM TO 3PM PST

IMPORTANT SAFETY INFORMATION
GENERAL SAFETY WARNINGS
SERIOUS BODILY INJURY OR DEATH CAN RESULT IF THIS SAND FILTER IS NOT INSTALLED
AND USED CORRECTLY. INSTALLERS, POOL OPERATORS AND POOL OWNERS MUST READ
THESE WARNINGS AND ALL INSTRUCTIONS BEFORE USING THIS SAND FILTER.
SAFETY
Most states and local codes regulate the construction, installation, and operation of public pools and
spas, and the construction of residential pools and spas. It is important to comply with these codes,
many of which directly regulate the installation and use of this product. Consult your local building and
health codes for more information.
IMPORTANT: Attention Installer: This Installation and User’s Guide contains important
information about the installation, operation and safe use of this sand lter. This Guide should
be given to the owner and/or operator of this equipment.
1
The sand lter is designed to work with water temperature > 0° C and < than 45 0° C. The lter
should never be operated outside of these temperatures or damage may occur. The installation
should be carried out in accordance to the safety instructions of swimming pools and the specic
instructions for each facility.
Failure to remove pressure test plugs and/or plugs used in winterization of the pool/spa from the
suction outlets can result in an increase potential for suction entrapment.
To reduce the risk of injury, do not permit children to use or operate this sand lter.
DO NOT store chemicals around your pool. Chemical spills and fumes can weaken swimming
pools and/or spas.
Any modications of this lter requires prior consent from the supplier’s original replacement and
accessories authorized by the manufacturer to ensure a high level of safety. The supplier assumes no
liability for any damage or injuries caused by unauthorized replacement parts and/or accessories. In
the even of defective operation or fault, contact the supplier or the nearest authorized service agent.
Components such as the ltration system, pumps and heater must be positioned so as to prevent
their being used as means of access to the pool by young children.
NEVER operate or test the circulation system at more than 40 PSI.
All electrical wiring MUST be performed by a qualied professional, and MUST conform to local
codes and regulations.
Hazardous Pressure. Pool and spa water circulation systems operate under hazardous
pressure during start up, normal operation, and after shut off. Stand clear of circulation system
equipment during pump start up. Failure to follow safety and operation instructions could result
in violent separation of the pump housing and cover, and/or lter housing and clamp due to
pressure in the system, which could cause property damage, severe personal injury, or death.
Before servicing pool and spa water circulation system, all system and pump controls must be
in off position and lter manual air relief valve must be in open position. Before starting system
pump, all system valves must be set in a position to allow system water to return back to the
pool. DO NOT change lter control valve position while system pump is running. Before starting
system pump, fully open lter manual air relief valve. DO NOT close lter manual air relief valve
until a steady stream of water (not air or air and water) is discharged.

IMPORTANT SAFETY INFORMATION
2
HIGH PRESSURE FROM THE SAND FILTER CAN CAUSE SEVERE INJURY OR MAJOR
PROPERTY DAMAGE DUE TO TANK SEPARATION. RELEASE ALL PRESSURE AND READ
INSTRUCTIONS BEFORE WORKING ON THE SAND FILTER. IF THE FILTER CLAMP IS
ADJUSTED UNDER PRESSURE, THE TANK CAN SEPARATE, CAUSING SERIOUS INJURY
OR MAJOR PROPERTY DAMAGE.
PUMPS REQUIRE HIGH VOLTAGE WHICH CAN SHOCK, BURN, OR CAUSE DEATH. BEFORE
WORKING ON PUMP! ALWAYS DISCONNECT POWER TO THE POOL PUMP AT THE CIRCUIT
BREAKER BEFORE SERVICING THE PUMP. FAILURE TO DO SO COULD RESULT IN DEATH
OR SERIOUS INJURY TO SERVICE PERSON, POOL USERS OR OTHERS DUE TO ELECTRIC
SHOCK.
The Virginia Graeme Baker Pool and Spa Safety Act imposes certain new requirements on owners and
operators of swimming pools and spas. Pools or spas constructed on or after December 20, 2008, shall
utilize:
(A) No submerged suction outlets, a gravity drainage system with ASME/ANSI cover(s), one or more
unblock-able outlets; or
(B) A multiple main drain system without isolation capability with suction outlet covers that meet ASME/
ANSI A112.19.8 Suction Fittings for Use in Swimming Pools, Wading Pools, Spas, and
Hot Tubs and either:
(I) A safety vacuum release system (SVRS) meeting ASME/ANSI A112.19.17 Manufactured Safety
Vacuum Release Systems (SVRS) for Residential and Commercial Swimming Pool, Spa, Hot Tub, and
Wading Pool Suction Systems and/or ASTM F2387 Standard Specication for Manufactured Safety
Vacuum Release Systems (SVRS) for Swimming Pools, Spas and Hot Tubs or
(ii) A properly designed and tested suction-limiting vent system or
(iii) An automatic pump shut-off system.
Pools and spas constructed prior to December 20, 2008, with a single submerged suction outlet shall
use a suction outlet cover that meets ASME/ANSI A112.19.8 and either:
(A) A multiple main drain system without isolation capability, or
(B) A safety vacuum release system (SVRS) meeting ASME/ANSI A112.19.17 and/or ASTM F2387, or
(C) A properly designed and tested suction-limiting vent system, or
(D) An automatic pump shut-off system, or
(E) Disabled submerged outlets, or
(F) Suction outlets shall be recongured into return inlets.
Separation Hazard. Failure to follow safety and operation instructions could result in violent separation
of pump and/or lter components. Strainer cover must be properly secured to pump housing with strainer
cover lock ring. Before servicing pool and spa circulation system, lters manual air relief valve must be in
open position. DO NOT operate pool and spa circulation system if a system component is not assembled
properly, damaged, or missing. DO NOT operate pool and spa circulation system unless lter manual air
relief valve body is in locked position in lter upper body.

3
IMPORTANT SAFETY INFORMATION
This lter operates under high pressure. When any part of the circulating system (e.g., clamp, pump, lter,
valves, etc.) is serviced, air can enter the system and become pressurized. Pressurized air can cause the
lid or control valve to separate which may result in serious injury, death, or property damage. To avoid this
potential hazard, follow these instructions.
1. Before repositioning valves and before beginning the assembly, disassembly, or adjustment of the clamp
or any other service of the circulating system:
(a) Turn the pump off and shut off any automatic controls to ensure the system is not inadvertently started
during the servicing;
(b) Open manual air relief valve;
(c) Wait until all pressure is relieved, pressure gauge must read zero (0).
2. Whenever installing the lter clamp, follow the lter valve and clamp installation instructions exactly.
3. Once service on the circulating system is complete, follow system restart instructions exactly.
4. Maintain circulation system properly. Replace worn or damaged parts immediately (e.g., clamp, pressure
gauge, relief valve, o-rings, etc.).
5. Be sure that the lter is properly mounted and positioned according to instructions provided.
Failure to operate your lter system or inadequate ltration can cause poor water clarity obstructing visibility
in your pool and can allow diving into or on top of obscured objects, which can cause serious personal injury
or drowning.
This lter operates under pressure. With the valve clamped properly and operated without air in the
system, this lter will operate in a safe manner. Air entering the lter and the valve not clamped correctly can
cause the valve to separate, which could cause serious personal injury and/or property damage.
Always turn pump off before changing valve positions. Changing valve positions while the pump is running
can damage the control valve, which may cause serious injury or property damage.
Chemical fumes and/or spills can cause serious corrosion to the lter and pump structural components.
Structurally weakened components can cause lter, pump or valve attachments to separate and could cause
serious bodily injury or property damage. High voltage can cause serious or fatal injury. Always install a
suitable GFCI at the power source of this unit as an added safety precaution. Article 681-31 of the NEC
requires that a GFCI be used if this pump is used with a storable pool.
Never work on the pump while it is running or power is still connected. High voltage can cause serious
or fatal injury. A suitable ground fault interrupter should always be installed at the power supply source of
this unit. Be sure to ground the motor before connecting to electrical AC power supply. Failure to ground the
motor can cause serious or fatal electrical shock hazard. DO NOT ground to a gas supply pipe line.
FOR CORD AND PLUG CONNECTED UNITS: Connect only to a ground type receptacle protected by a
Ground Fault Circuit Interrupter (GFCI). Contact a qualied electrician if you cannot verify that the receptacle
is protected by GFCI. DO NOT Bury Cord. Locate cord to minimize abuse from lawn mowers, hedge trimmers,
and other equipment. To reduce the risk of electrical shock, replace damaged cord immediately. To reduce
the risk of electrical shock, DO NOT Use an extension cord to connect unit to electrical supply; provide a
properly located outlet.

4
SAND FILTRATION WORKING PRINCIPLE
Incoming water from the piping system is automatically directed by the multi-port valve to the top of the
lter bed. As the water is pumped through the lter sand, dirt and debris are trapped by the lter bed, and
ltered out. The lter water is returned from the bottom of the lter tank., through the multi-port and back
through the piping system .
PREPARATION BEFORE INSTALLATION
1. Position the lter as close to the swimming pool / spa as possible.
2. The lter should be placed on a level concrete slab, very rm ground, or equivalent. Ensure that the
ground will not subside to prevent any strain to the attached plumbing.
3. Position the lter so that the piping connections, Multi-Port Valve and winter drain is convenient and
accessible for operation, servicing and winterizing.
4. Ensure that the compliance label is facing the front to allow easy identication in the case of
service difculties.
INSTALLATION
INSTALLATION
WARNING: This product should be installed and serviced only by a qualied professional.
1. Put the lter tank on the base. Turn the lter tank to the right to tighten it. Position the outlet drain plug
so it is facing outside for easy operation.
2. Before lling the lter media into the lter vessel, do a visual check of the laterals. Look for broken or
loose laterals. Replace if necessary. The laterals of side-mount valve sand lter are all installed.
3. Match the Raised Point of the laterals to Folding Umbrella lateral holder, insert the laterals and turn
90º clockwise. Listen for a sound to conrm the lateral is in place.
4. Make sure the air release hose is running along side the body of the lateral holder. One end of the
air release hose MUST be out of the sand. DO NOT bury the air release hose in the sand.
5. To eliminate stress on the laterals, ll the lter vessel with enough water to provide a cushioning
effect when the lter sand is poured in.
6. Use Sand Shield to protect the lter top mount and make sure the central stem pipe has been fully
covered.
7. Carefully pour the exact amount of sand into the lter vessel. DO NOT allow sand to go into the stem
pipe. DO NOT damage the lter top mount or it can cause a leak.
8. Put the O-Ring on the top mount valve and then connect the valve on the lter vessel. The
stem pipe should be straight and aligned with the top mount valve. Tighten the ange clamp on the
valve. NOTE: The ange clamp should be in place and tight or it could cause injuries.
9. To connect the pump to the base, use the screws from the pump hardware pack.
10. Adjust the valve position. The pressure hose connects to the pump output/input valve.
11. The other two connection ends of the valve connect to the swimming pool and the drain outlet hose.

INSTALLATION
5
INSTALLATION NOTES
1. Make sure the lter is operating under the working pressure and using a pressure control valve when
the system is using a booster pump.
2. To aid in winterization and maintenance it is recommended that a separate gate valve be installed.
3. Minimize the length of pipe and the number of ttings to minimize friction loss to ensure maximum
efciency.
4. Connect all plumbing to the Multi-port Valve taking care that all joints are glued or tightened securely to
prevent leaking.
5. To prevent breakage and damage to the pump and Multi-port Valve, use only pipe sealants specically
formulated for plastics.
6. Ensure solvents are not excessively applied to ttings as this could run into O-Rings and create sealing
problems.
7. DO NOT over tighten ttings or adapters.
MULTI-PORT VALVE INSTALLATION
Top Mount Sand Filters are supplied with a screw down Multi-port Valve. Supplied with the Multi-port
Valve are Flange clamp, screws and O-Ring.
1. Screw the barrel unions onto the threaded ports on the Multi-port Valve.
2. When rotating the Multi-port Valve into position on a Top Mount Filter, leave some leeway for better
alignment of plumbing.
3. Once the Multi-port Valve is in position and the plumbing is aligned, apply the thread tape to the barrel
union thread.
4. Using a roll of Teon tape, wrap the Teon tape around the thread (tail) of the barrel union in a clock
wise direction.
5. Screw the barrel union into the thread of the Multi-port Valve and hand tighten. The barrel union should
be rmly threaded into the Multi-port Valve and there should be no play between the thread.
6. Once you have done this tighten the barrel union with an appropriate tool until it is tight.
7. Repeat steps until all barrel unions are rmly onto the Multi-port Valve.
8. Glue the plumbing to the Barrel unions and allow 24 hours for glue (solvent) to set before starting the
lter.
9. Test the lter and check for leaks around the threads. If leaking occurs disconnect plumbing and repeat
the steps 2 to 6 until the leak has stopped.
CONTROL VALVE
PRESSURE GAUGE
RETURN TO POOL
FILTER
BASE
DRAIN CAP

INSTALLATION
6
INITIAL STARTUP OF FILTER
Be sure correct amount of lter media is in tank and that all connections have been made and are
secure. The lter system should be installed, not more than 6 feet above pool water level, on a level
concrete slab, very rm ground, or equivalent.
1. Loading sand media. Filter sand media is loaded through the top opening of the lter.
a. Loosen ange clamp and remove Filter Control Valve (if previously installed).
b. Cap internal pipe with sand shield to prevent sand from entering it. Be sure pipe is securely in place in bottom
under drain hub.
c. We recommend lling tank approximately 1/2 way with water to provide a cushioning effect then the lter sand is
poured in. This helps protect the under drain laterals from excessive shock. d. Carefully
pour in correct amount and grade of lter sand, as specied on Table 1. (Be sure center pipe
remains centered in opening). Sand surface should be leveled and should come to within 6” of the top of the lter
tank. Remove sand shield from internal pipe.
2. Assemble Filter Control Valve to lter tank.
a. Loosely pre-assemble both halves of the clamp with one screw and one nut, turning the nut 2 or 3 turns. Do not
tighten. Wipe lter ange clean.
b. Insert Filter Control Valve (with valve/ange 0-ring in place) into the tank neck, taking care that the center pipe
slips into the hole in the bottom of the valve. Install clamp around tank and valve ange and assemble second
screw and nut. Tighten just enough so that the valve may be rotated on tank for nal positioning.
c. Wrap two turns of Teon pipe sealant tape manufactured for plastic pipe on the ¼” NPT male end of gauge.
Carefully screw pressure gauge, into 1/4”NPT tapped hole in valve body. Do not over tighten.
d. Connect pump to control valve opening marked PUMP according to instructions. After connections are made,
tighten valve ange clamp with screwdriver, tapping around clamp with screwdriver handle to help seat valve ange
clamp.
3. Make return to pool pipe connection to control valve opening marked RETURN and complete other necessary
plumbing connections, suction lines to pump, waste, etc.
4. To prevent water leakage, be sure winter drain cap is securely in place and all pipe connections are tight.
BACKWASHING CONDITIONS
WARNING: ALL SUCTION AND DISCHARGE VALVES MUST BE OPEN WHEN STARTING THE
SYSTEM. FAILURE TO DO SO COULD CAUSE SEVERE PERSONAL INJURY.
Once water ow is steady out the waste line, run the pump for at least 2 minutes. The initial back-
washing of the lter is recommended to remove any impurities or ne sand particles in the sand media.
1 . B e s u r e c o r r e c t a m o u n t o f  l t e r s a n d m e d i a i s i n t a n k a n d t h a t a l l c o n n e c t i o n s h a v e b e e n m a d e a n d a r e s e c u r e .
2. Depress control valve handle and rotate to BACKWASH* position. (To prevent damage to control valve seal,
always depress handle before turning.)
3. Prime and start pump according to pump instructions (be sure all
s u c t i o n a n d r e t u r n l i n e s a r e o p e n ) , a l l o w i n g t h e  l t e r t a n k t o  l l w i t h w a t e r.
4. Turn pump off and set valve to RINSE position. Start pump and operate until water in sight glass is clear about
1/2 to 1 minute. Turn pump off, set valve to FILTER position and restart pump. Your lter is now operating in the
normal lter mode, ltering particles from the pool water.
5. Adjust pool suction and return valves to achieve desired ow. Check system and lter for water leaks and
tighten connections, bolts, nuts, as required.
6. Note the initial pressure gauge reading when the lter is clean. (It will vary from pool to pool depending
upon the pump and general piping system). As the lter removes dirt and impurities from the pool water, the
accumulation in the lter will cause the pressure to rise and ow to diminish. When the pressure gauge reading is
8-10 PSI (0.55-0.69 BAR) higher than the initial “clean” pressure you noted, it is time to backwash (clean) the lter
(see BACKWASH under Filter Control Valve Functions.) NOTE: During initial clean-up of the pool water it may be
necessary to backwash frequently due to the unusually heavy initial dirt load in the water.
FILTER—Set valve to FILTER for normal ltering. Also use for regular vacuuming.
BACKWASH—For cleaning lter. When lter pressure gauge rises 8-10 PSI (0.55-0.69 BAR) above start-up
(clean pressure): Stop the pump, set valve to BACKWASH. Start pump and backwash until water in sight glass is
clear. Approximately 2 minutes or less depending on dirt accumulation. Proceed to RINSE.

TROUBLESHOOTING / GUIDES
7
PROBLEM SOLVING TABLE

PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY
DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR
DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER
THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR
SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER
AND/OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS
SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE
BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS
TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR
HER INSTALLATION OF REPLACEMENT PARTS THERETO.
Note: Some parts are listed and shown for illustration purposes only and are not available individually
as replacement parts.
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
8
FEATURES
FEATURES AND SPECIFICATIONS
Flange clamp design allows 360 degree rotation of valve to simplify plumbing
Unitized, corrosion-proof lter tank
7 position Vari-Flo control valve with easy-to-use lever-action handle
Large pressure sand/water drain
Umbrella-fold self cleaning laterals
Max Water Temp 105F
Holds to 175lbs of sand
Max lter 24000 gallon per day (10 hr)
Max pressure 50ps
This pool sand lter is ideal for most in ground and above ground pools for ltering sand and clearing
the water. It is able to apply for several water feature including sh ponds, fountains, water gardens. It
features ange clamp design providing 360 degree rotation of valve for simplify plumbing.