Pentair DM Filter System Owner’s Manual

DM™ Filter System Owner's Manual

IMPORTANT SAFETY INSTRUCTIONS

READ AND FOLLOW ALL INSTRUCTIONS

SAVE THESE INSTRUCTIONS

T able of Contents

SECTION I. PUMP SAFETY REMINDER INSTRUCTIONS ...............................................2

SECTION II. HOW YOUR FIL TER WORKS ..........................................................................2

SECTION III. INST ALLA TION................................................................................................. 3

SECTION IV . INITIAL ST ART-UP AND RESTART INSTRUCTIONS.................................6

SECTION V. CLEANING THE FIL TER...................................................................................6

SECTION VI. WINTERIZING THE FIL TER ............................................................................8

SECTION VII. TROUBLE SHOOTING ...................................................................................... 8

SECTION VIII. PUMP INSTRUCTIONS .................................................................................... 9

SECTION IX. TECHNICAL DA T A......................................................................................... 1 1

A. ABOVE GROUND FIL TER SYSTEM........................................................................ 1 1

B . CAR TRIDGE FILTER P AR TS LIST - MODELS DM-75, 90, 120 ............................ 1 2

C . DYNAMO PUMP.......................................................................................................13

Important Notice

Attention Installer. This manual contains important information about the installation,
operation and safe use of this product. This information should be given to the owner/
operator of this equipment.

WARNING

Before installing this product, read and follow all warning notices and instructions accompanying this
filter. Failure to follow safety warnings and instructions can result in severe injury, death, or property
damage. Call [phone] for additional free copies of this manual.

Pentair Pool Products

1620 Hawkins Ave., Sanford, NC 27330 • [phone]
10951 West Los Angeles Ave., Moorpark, CA 93021 • [phone]

REV. B 7-7-00 1 P/N 175706

SECTION I. PUMP SAFETY REMINDER INSTRUCTIONS

When installing and using this electrical equipment, basic safety precautions should always be followed,
including the following:

1. READ AND FOLLOW ALL INSTRUCTIONS.
2 . WARNING - To reduce the risk of injury, do not permit children to use this product unless they are

closely supervised at all times.

3 . WARNING - Risk of Electrical Shock. Connect only to a grounding type receptacle protected by a

ground-fault circuit-interrupter (GFCI). Contact a qualified electrician if you cannot verify that the
receptacle is protected by a GFCI.

4 . Do not bury the electrical cord. Locate the cord to minimize the abuse from lawn mowers, hedge

trimmers, and other equipment.
5 . WARNING - To reduce the risk of electrical shock, replace damaged cord immediately.
6 . WARNING - To reduce the risk of electrical shock, do not use an extension cord to connect unit to

electric supply; provide a properly located outlet.
7 . CAUTION - For continued protection against possible electrical shock, this unit is to be mounted

to the base in accordance with the installation instructions.

8. SAVE THESE INSTRUCTIONS.

WARNING

To reduce the risk of electrical shock, Only connect to a GFCI protected receptacle. Failure to do
so could result in an electrical shock to pool users, installers, or others which can result in
serious personal injury or death.

SECTION II. HOW YOUR FILTER WORKS

Your cartridge filter is designed to produce clear, sparkling water and operate for years with a minimum of
maintenance when installed, operated and maintained in accordance with these instructions.

Your filter uses a cartridge element to remove dirt particles from the water. Dirt is collected in the filter by the
cartridge element as water flows through the filter. Water enters the filter through the filter inlet port and is
distributed evenly through the cartridge element. The dirt is removed by the cartridge fabric and the clean
water flows through the filter outlet port and is returned to the pool through the piping or hoses.

After a period of time, dirt will accumulate in the filter causing a resistance to the flow of water through the
filter. This resistance results in a diminished flow of water and a rise in the filter pressure. Eventually the
filter will have removed so much dirt and the filter pressure risen to such a point that it will be necessary to
clean your filter, see SECTION V. CLEANING FILTER.

The filter’s function is to remove suspended matter from the water and does not sanitize the water. For
sparkling clear water, the water must be sanitized as well as balanced. Pool chemistry is a specialized area,
and you should consult your local pool service specialist for specific details. In general, proper pool
sanitation requires a free chlorine level of 1 to 2 PPM and a PH range of 7.2 to 7.6.

P/N 175706 2 REV. B 7-7-00

WARNING

Failure to operate your filter system or inadequate filtration can cause poor water clarity obstructing
visibility in your pool. Poor water clarity may obscure objects in the water which while swimming and
diving could cause severe personal injury and death. Never swim in a pool with poor water clarity.

SECTION III. INSTALLATION

WARNING

THIS FILTER OPERATES UNDER HIGH PRESSURE. WHEN ANY PART OF THE
CIRCULATING SYSTEM (e.g., LOCK RING, PUMP, FILTER, VALVES, ETC.) IS
SERVICED, AIR CAN ENTER THE SYSTEM AND BECOME PRESSURIZED.
PRESSURIZED AIR CAN CAUSE THE LID TO BE BLOWN OFF WHICH CAN RESULT IN
SEVERE 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 LOCK RING 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 AIR RELIEF VALVE; (C) WAIT
UNTIL ALL PRESSURE IS RELIEVED.

2. WHENEVER INSTALLING THE FILTER LOCK RING FOLLOW THECLEANING
FILTER INSTRUCTIONS EXACTLY.

3. ONCE SERVICE ON THE CIRCULATING SYSTEM IS COMPLETE FOLLOW INITIAL
START SYSTEM RESTART INSTRUCTIONS EXACTLY.

4. MAINTAIN CIRCULATION SYSTEM PROPERLY. REPLACE WORN OR DAMAGED
PARTS IMMEDIATELY (e.g., lock ring, pressure gauge, relief valve, O-rings, etc.).

5. BE SURE THAT THE FILTER IS PROPERLY MOUNTED AND POSITIONED
ACCORDING TO INSTRUCTIONS PROVIDED.

To install this filter system, you will need the following simple tools - a screwdriver, pliers, and wrench.

1 . Carefully remove the equipment from the carton and check for any evidence of damage due to

rough handling or shipping. If any of the equipment is damaged, immediately notify the
organization where the equipment was purchased.

2 . This filter should be mounted on a level concrete slab, preferably concrete poured in a form or on a

platform constructed of concrete block or brick.

REV. B 7-7-00 3 P/N 175706

3. Place the pump on the mounting base; see
Diagram 1. Loosely attach the pump
connector to the pump and filter. This will

DM Filter

align the pump to the correct set of mounting
holes. Secure the pump to the base using
two bolt-fasteners. Tighten the union fittings
on the plumbing connector by hand until

Plumbing Kit

Dynamo Pump

tight. If water leakage occurs at these
connections, adjust connections with a
wrench, making sure not to exceed 1/4 of a
turn.

4 . Do not mount electrical controls (on/off

switches, timer, etc.) over the filter. You need
to be able to stand clear of the filter when
starting the pump.

AquaLuminator
Light Ready
Return Fitting

Optional
Chlorinator

AG Base

inlet

5. Attach the hair and lint pot to the front of the
pump. This is an O-ring seal fitting that
requires hand tightening only. (OVER

Diagram 1.

TIGHTENING CAN RESULT IN DAMAGE
TO THE O-RING SEAL)

6 . Install the threaded fitting, see Diagram 2, into the suction port of the pump. This is an O-ring seal

fitting that requires hand tightening only. (OVER TIGHTENING CAN RESULT IN DAMAGE TO
THE O-RING SEAL)

7. Install the threaded return fitting into the filter outlet port, see Diagram 1, making sure that the O-ring is
in place in the filter body. Tighten this connection by hand until tight. If water leakage occurs at this
connection after installation, adjust connection with a wrench making sure not to exceed 1/4 of a turn.
(OVER TIGHTENING CAN RESULT IN DAMAGE TO THE FILTER)

8 . Connect flexible hoses to the equipment and the pool with the clamps.

a. Connect the skimmer suction port from the pool to the pump inlet.
b. Connect the filter outlet port to the return fitting of the pool.
c. Install the pressure gauge using the Teflon tape provided. Wrap the threads of the pressure

gauge with three layers. Install the gauge into the top of the filter tank until tight.

9 . If using the optional Rainbow Chlorine feeder, position the feeder on the system base, aligning the

holes in the feeder base with the three "T" nuts, see Diagram 1. Install the feeder using the three
bolts supplied and tighten.

CAUTION

Do not over tighten.

P/N 175706 4 REV. B 7-7-00

10. Your system includes two (2) special barbed fittings, see Diagram 3, a barbed body swivel and a

barbed return elbow, these fittings must be modified and drilled when installing the chlorine

feeder.

A. Using an 1/8" drill bit; drill a hole through the center of the small protruding barbed port to the

inside of the fitting (this is shipped with the hole blocked), see Diagram 3; this will allow the
water to flow to and from the chlorine feeder. See the Caution below before drilling both

fittings if using a chlorine feeder with a heater.

NOTE

Please use caution in drilling, as not to damage the barbed fitting.

B. Attach the inlet/outlet tubing by first sliding the compression nut over the tubing.
C. Push the tubing over the tapered end of the barb, slide nut to barb, and tighten the nut firmly

by hand.

CAUTION

A highly chlorinated solution should NEVER pass through a heater, if this system was purchased with the
option chlorine feeder and is to be used with a heater, "DO NOT" drill the barbed return elbow. Follow

instruction "D" when installing with a heater.

D . On the return line to the pool from the heater, drill a 1/8" hole in the return pipe and using the

barbed fitting, nut, rubber washers and hose clamp supplied with the chlorine feeder, connect
the outlet tubing from the chlorinator to this connection. This will allow the concentrated
chlorine solution to sanitize your pool while bypassing the heater, see Diagram 4.

11 . The system also includes the AquaLuminator Light Ready Water Return Fitting (P/N 543110,

Diagram 1). To install the light, use the AquaLuminator upgrade kit (P/N 619398). To install the
Light Ready Water Return Fitting, please refer to the installation instructions provided with it.

Diagram 2.

Diagram 3.

Drill a hole through

Drill a hole through
the center of the small
barbed port to the inside
of the fitting.

the center of the small
barbed port to the inside
of the fitting.

Diagram 4.

REV. B 7-7-00 5 P/N 175706