4
filter will vary with pool size, pool use, amount of air-
borne dirt and debris, and the chemical treatment you
give the water. Backwashing should be done when the
Sequel II
TM
pressure gauge reads 5 to 7 pounds higher
than initial start-up pressure. Example: If the pressure
guage reads 10 pounds at the start of a clean filter, you
should backwash when the gauge reads from 15 to 17
pounds.
FILTER TO WASTE POSITION
Place the valve handle in the "Filter to Waste" position
after backwashing your Sequel II
TM
Filter. This will
prevent an objectionable "cloudy puff" of D.E. from
entering your pool through the pool return inlet.
PUMP TO WASTE POSITION
This position allows you to vacuum heavy debris or
larger amounts of settled contaminants from the bottom
of your pool directly to waste.
RECIRCULATE POSITION
This position allows you to increase the water flow rate
through the filter to circulate chemicals throughout the
pool more quickly. Pool water passes through the filter
valve on top of the filter, bypassing internal filter compo-
nents, and travels back to the pool at a rapid rate.
WINTERIZE POSITION
This position to allows you to drain trapped water from
the filter valve and relieve compression on the rotor
valve gasket during winter storage.
INITIAL START-UP AND OPERATION OF
FILTER
The water level in your pool must be between the
water level markers on the skimmer faceplate.
The
pump must be able to draw water from the pool to
operate safely. Never run the pump with the pool water
level so low that no water passes to the pump. The
pump seal may overheat and permanent damage to the
pump may occur.
WASTE LINE HOOK-UP
The waste line is used when cleaning (backwashing)
and adding D.E. to the filter and requires a 1 1/2" dia.
hose connected to the filter port labeled "To Waste".
You may also use a collapsible-type hose obtained from
your dealer designed for this purpose. Be sure pump is
off.
Remove the waste cap (19) and gasket (18) prior
to installing hose on filter
. Make sure the other end
of the hose is located in an area that will accept approxi-
mately 100 gallons of water.
ADDING D.E.
Be sure your Sequel II™ valve handle is in the
FILTER
TO WASTE
position. Remove waste cap and gasket.
Your filter requires 2 1/2 pounds of "diatomaceous earth"
(D.E.). This powder coats the grids inside the filter. The
coated grids provide the filtering action. D.E. can be
purchased at your local pool store. Remove the skim-
mer lid. Start your Pool Power Pak. You can use a
clean, one-pound coffee can to measure the D.E.
NOTE: A one pound coffee can holds 1/2 pound of D.E.
Your filter requires five coffee cans full. Slowly pour D.E.
into the skimmer. During this process super fine par-
ticles of the D.E. migrate through the "V" grids and to
waste rather than entering the pool in an objectionable
cloudy puff through the return inlet. After 30 seconds,
turn power pak "OFF", rotate valve handle to the
FILTER
position. Replace skimmer lid in normal position
when completed and turn power pak "ON".
Note the
clean filter starting pressure on the pressure gauge.
NEVER OPERATE FILTER WITHOUT D.E.!
A newly filled pool usually requires continuous filtering
for about 24 hours. The time varies depending on water
conditions and amount of water being filtered. During
initial start-up, the Sequel ll
TM
may require frequent
cleaning (backwashing) as it filters the water. (See
"BACKWASHING "). After a few days of operation, and
periodically thereafter, recheck all fittings, clamps and
screws for tightness. Retighten as necessary.
ROUTINE CARE & MAINTENANCE
FILTERING
For normal filtering, the valve handle is rotated to the
FILTER
position, and the Pool Power Pak is "ON".
When you stop your Power Pak, the D.E. slips off the
filtering grids and settles to the bottom of the filter tank.
When you start your Power Pak, inlet water is directed to
the bottom of the filter tank. It sweeps up the settled
D.E. and collected debris to recoat the filtering grids.
(You may notice a lower reading on the Sequel II
TM
pressure guage at this time. Water flowing through the
grids meets less resistance from the D. E. and collected
debris mixture. This gives you extended filtering time.
You don't need to add more D.E.). Backwash the filter
when there is a big increase in the pressure gauge
reading.
BACKWASHING
1.
Stop pump. Be sure drain cap (19) and gasket (18)
are removed, and waste line is hooked up to the port
labeled "To Waste."
2.
Rotate valve handle to
BACKWASH
position. Turn
pump "ON" and run for 2-3 minutes.
3.
Stop pump and move valve handle to
FILTER TO
WASTE
position, then start pump and run for 20
seconds.
4.
Stop pump and repeat steps 2 and 3.
5.
Stop pump and move valve handle back to
BACKWASH
position. Start pump and run until
waste water is clear.
6.
Stop pump, move valve handle to
FILTER TO
WASTE
position. Start pump and recharge with
D.E. (See Initial Start-Up of Filter for adding D.E.).
7.
When finished, remove waste hose, and replace
gasket (18) and drain cap (19).
TO CLEAN DOUGHBOY STRAINER
ASSEMBLY
CLEAN THE STRAINER ASSEMBLY FREQUENTLY.
The strainer assembly on your Doughboy Pool
Power Pak
®
catches large debris such as insects and
leaves.
To clean
: Stop your Power Pak. Rotate valve
handle on your Sequel II
TM
to
BACKWASH
position.
This closes off the pool return line to prevent back flow
of water through the filter and out the pump strainer. To
prevent water coming from the skimmer, remove skim-
mer lid and basket. Plug the hole in the bottom of the
skimmer with a towel or cloth. Place one hand on top of
the strainer cover and loosen the two knobs enough to
rotate the cover counter-clockwise until it stops. Lift off
the cover. Remove basket and clean. Lubricate O-Ring
on cover prior to reassembly. (See "LUBRICATION" in
this guide). Replace basket. To replace cover, press
down and rotate clockwise until slots in cover are
completely under knobs. Tighten knobs until cover is
fully seated. Remove towel or cloth from skimmer hole.
Replace skimmer basket and lid. Rotate valve handle to
FILTER
position and switch Pool Power Pak to resume
normal filter operation.