SAVE THESE INSTRUCTIONS
Read all instructions prior to installation
IMPORTANT: Follow all national and local building and safety codes.
SAFETY
Warning: A GFCI is required. System will require a 110Volt / 20 Amp service. DO NOT use extension cords. Use will void
warranty on pump motor. The pool equipment should be located between the pool skimmer and return line. The filtration system
should not be installed less than 2 ft. and no more than 5 ft. from the pool. The TWM Sand Filter System needs to be on a completely
flat / level surface. (patio block, cement slab, etc.).
INSTALLATION
1. Position Equipment Base, #18, P/N 672-1000, on a level, secure surface. Using Bolt, #16, P/N 819-0020, and Washer, #15, P/N
820-9001, position Support Mount, #17, P/N 218-6680, between the Equipment Base and Sand Filter Body, #12, and secure the
Sand Filter Body. Do Not over-tighten. There is no need to disassemble filter or pump assemblies.
2. Open box and remove pump and trap assemblies. Open pump trap lid and remove 11⁄2ʺ gasket. Position gasket into end of pump
trap union nut. Hand tighten union nut onto suction side of pump. Do Not over-tighten.
3. Place pump on left side of filter. Secure pump to base with 4 screws and washers provided.
4. Remove collar assembly from filter tank. Do Not lose screws. Important: To prevent damage to internal filter lateral compo-
nents, fill filter tank 1⁄2full with water prior to adding sand. With sand fill guide, #10, P/N 502-2010, positioned in filter tank
opening, add only recommended #20 grade silica sand. See Fill Chart. Remove sand fill guide. Important: Clean and remove
all debris from filter tank flange after adding sand.
5. Assure that O-Ring, #9, P/N 805-0435, is positioned onto multiport throat.
6. Install Multiport Valve with inlet and outlet ports facing pool. Top of internal stand pipe seats directly into Multiport Valve. Push
multiport Valve evenly onto tank flange. Note: Make sure tank flange is clear of any sand debris.
7. Install filter tank collar assembly, #6, P/N 718-1960 and #7, P/N 819-0015, by threading collar clockwise until hand tight. Then use col-
lar wrench to tighten further.
8. To use collar wrench, #5, P/N 505-1970, place on collar assembly use both hands to turn wrench 1⁄2to 3⁄4of a turn to secure multiport
valve to filter body.
9. Apply teflon tape (4 wraps ideal) onto 11⁄2ʺHose fittings with 3⁄8ʺ Barb, #27, P/N 417-6151. Hand tighten into valve inlet (top)
and outlet (bottom), onto pump outlet and to Pump suction side.
10. Connect 3 ft. corrugated hose to top inlet port and onto pump using hose clamps, #28.
11. Connect 6 ft. corrugated hose to 11⁄2ʺHose fittings with 3⁄8ʺ Barb, #27, P/N 417-6151, onto bottom outlet port and to pump suction side.
12. Apply Teflon tape (4 wraps ideal) to Pressure Gauge, #1, P/N 830-2001. Thread into Multiport Valve.
13. Install Waste Adapter Fitting, #3, P/N 425-1928, with O-Ring for Waste Adapter, #2, P/N 805-0224.
SYSTEM START-UP
1. Fill pool until water is halfway up length of skimmer throat.
2. Make sure pump trap is full of water. Slightly loosen trap lid to relieve pressure and allow water to fill trap. Re-tighten lid.
3. Make sure Multiport Valve handle is in Filter position.
4. Plug pump into GFCI outlet and turn pump on. Turn two (2) speed pumps to high.
5. Make note of start-up pressure on gauge.
CLEANING INSTRUCTIONS
Note: When pressure gauge reading is 5 PSI or higher than original starting pressure, the filter needs to be cleaned. The TWM Sand
Filter System features our exclusive 7-Position Multiport Valve, which ensures safe and simple filter maintenance.
Pressurized vessel. Never attempt to loosen or open Collar Assembly, #6, P/N 718-1960 and #7, P/N 819-0015, while system is running.
It could cause severe injury or harm to user.
1. Turn off pump.
2. Attach backwash hose (optional) to waste port adapter.
3. Rotate Multiport Valve handle to Backwash position, Turn pump on and run for 90 second intervals or until discharge water is clear. Turn pump off.
4. Rotate Multiport Valve handle to rinse position. Turn pump on for 30 seconds.
5. Repeat steps 3 & 4 until all discharge water is clear while pump is turned on.
6. Rotate Multiport valve handle to filter position.Turn pump on. Filter is now in normal operating position.
TWM SAND FILTER SYSTEM
16
ʺ
P/N 520-1610 19
ʺ
P/N 520-1910 22
ʺ
P/N 520-1700
WINTERIZATION
1. Backwash filter system completely. See Cleaning Instructions.
2. Run a filter cleaning chemical through filter system as, per cleaner instructions.
3. Turn pump off. Disconnect hoses from skimmer and return fitting.
4. Remove drain plug from bottom of filter tank. Do Not remove hex drain assembly, #13.
5. Unscrew drain plugs located at bottom of pump trap and front of pump housing. Let water drain completely.
6. Disconnect filter to pump connection. Loosen union connection on discharge of pump and remove from pump.
Do Not lose 2ʺunion gasket. Lift and remove pump and pump base from filter base. Store inside.
