Pentair DD Series User manual

OWNERS MANUAL
INSTALLATION AND OPERATING INSTRUCTIONS
REPAIR PARTS LIST
50 HERTZ
SELF-PRIMING CENTRIFUGAL PUMPS
“DD” SERIES
MODELS
1 HP 5DDHE-104PMK
1 HP 5DDHE3-104PMK
1-1/2 HP 5DDHF-53PMK
1-1/2 HP 5DDHE3-53PMK
1. BE SURE electric power to your pump or control
box is disconnected before installing or while ser-
vicing your pump and water system.
2. BE SURE to test water from well for safe use
before installing your pump. Check local Health
Department for procedure.
3. BE SURE to keep well covered until installation
is completed to prevent leaves and foreign matter
from falling into the well. This will prevent conta-
mination of the water and/or possible serious
damage to the mechanical operation of your
pump.
4. BE SURE installation is in accordance with all
applicable local electric, plumbing, sanitary,
pump and well codes and ordinances.
5. BE SURE your electric supply circuit agrees with
the voltage stamped on the motor nameplate.
NOTE: If your motor is dual voltage, BE SURE to
wire motor to same voltage as electric supply cir-
cuit. If in doubt, contact your local Power
Company.
6. BE SURE to use correct fusing and wiring sizes
for proper motor operation. See fusing and wiring
data in this manual.
7. BE SURE your electrical circuit, pump motor,
control box, and water system is completely
grounded in accordance with the applicable local
electrical codes and ordinances.
8. BE SURE to protect pump, tank, piping, and
water system against below freezing tempera-
tures. Freezing can cause the pressure controls
to become inoperative and result in tank blow-up.
If your water system has the ability to
exceed 75 pounds pressure per square inch (PSI)
(5.2 BAR), a suitable safety device must be
installed. This can either be a high pressure electri-
cal cut-off switch or a relief valve. Failure to follow
these instructions can cause tank blow-up and
result in serious injury.
The relief valve should be capable of passing full
pump capacity at 5.5 BAR.
Printed In U.S.A. U94 (Rev. 10/30/97)
RULES FOR SAFE INSTALLATION AND OPERATION

Typical Pump Installations
Location of Unit
Locate the pump as near the well or water source as
possible, using a short, direct suction pipe. Keep the
static suction lift (vertical distance between the center
line of the pump and the water level), to a minimum.
Mount the pump on a solid, level foundation, which pro-
vides a rigid and vibration-free support. It should be
located where the unit is readily accessible for service
and maintenance. The pump should be protected
against flooding and excessive moisture.
Pump Description
The pump is a high capacity self-priming centrifugal
pump suitable for lawn sprinkling or other applications
where large quantities of water are required. It will
pump water from depths of 610 cm or less, and is self-
priming once the pump body is initially filled with water.
A foot valve, or a check valve as near the water as pos-
sible is necessary and will reduce priming time to an
absolute minimum. No check valve or foot valve is fur-
nished.
Piping
Both suction and discharge piping should be indepen-
dently supported at a point near the pump to avoid
strains being placed on the pump. Start all piping at the
pump to avoid strains left by a gap at last connection.
It is advisable to increase the size of both suction and
discharge piping at the pump if any appreciable run of
pipe is required. Never use smaller suction pipe than
the suction tapping on the pump.
Suction Piping
The suction pipe must be kept free of air leaks and
must have a gradual slope upward to the pump. Avoid
any fittings which may cause an air trap.
A foot valve is required on pumps installed with a
cased well. On pumps using driven points, a check
valve is required and should be installed close to
ground level in a vertical position.
Discharge Piping
A gate valve and union should be installed in the dis-
charge line. For removal of the pump for service, close
the gate valve, and disconnect at the union.
Lawn Sprinkling Application
The pump is especially adapted to lawn sprinkling. It is
designed to deliver plenty of water at full sprinkler pres-
sure. It can pump from a pond, cistern or well points. If
source water is a driven well, it may be necessary to
drive two or more points piped together to satisfy the
pump capacity. Figure 1 shows a suggested layout.
Priming the Pump
This pump is of the self-priming type, but only after the
pump body has been filled with water on the initial
startup. It need not be primed again, unless it has been
removed from service and/or drained.
NOTE: The pump body must be filled with water before
starting!
To Fill:
Install a service tee or cross in the discharge opening
of the pump to provide access for priming.
Fill pump body with water up to the suction inlet.
Replace pipe plug, using pipe joint compound on male
threads only.
Start pump. Water will be pumped after a few minutes,
the time depending on depth to water and length of
horizontal suction line.
If pump does not produce water after a reasonable
length of time (5 to 10 minutes) check the following:
1. Depth to water – must not be over 610 cm.
2. Total suction lift. Check both vertical lift and length of
horizontal run (distance from pump to vertical piping)
– 300 cm of horizontal piping is equivalent to 30 cm
of vertical lift, due to friction loss. Total must not
exceed 610 cm.
Check valve
Steel drive pipe
Drive coupling
Driven point
745 0993
Figure 1
Suction
pipe
Foot
Valve
Priming plug
Priming tee
Standing water
level (pump off)
Drawdown water
level (pump on)
10-20' (3-6 m)
20' (6 m) max.
At least 5 feet (1.5 m)
828 0993
613 1293
Priming Plug
Shutoff
To Service
To
Service
2

3. Suction piping must be air tight.
4. If there is a valve in discharge or suction line, be
sure valve or valves are open.
WIRING
Check fusing and wiring data charts before connecting
wires to service lines. Make sure the voltage and fre-
quency of the power supply agree with that stamped on
the motor nameplate. If in doubt, check with the Power
Company.
Single Phase: All single phase motors used on these
pumps will be wired for 220/230 volts. Connect wiring
to terminal board located inside motor end cover. Be
sure voltage connections agree with wiring diagrams
on motor nameplate.
Three Phase: Three phase motors require magnetic
starters, and can run in either direction, depending on
how they are connected to the power supply.
To Check For Proper Rotation: Remove the motor
end cover. This exposes the motor shaft. If hook-up is
correct, the shaft will rotate clockwise. If rotation is not
clockwise, reverse any two leads to the starter. The
rotation will now be correct.
IMPORTANT: Be sure lead wire opening on end of
motor is fully sealed when conduit or a pressure switch
is not used. Failure to seal it properly will allow dirt,
rain, bugs, etc. to enter back compartment of motor
thru conduit opening and cause switch malfunction.
TABLE I – Recommended Fusing and Wiring Data – 50 Hertz Motors
Branch Branch Mini-
Max. Fuse* Fusetron* mum Distance in Feet from Meter to Motor
Motor Load Rating Rating Wire 0 to 51 to 101 to 201 to 301 to 401 to
HP Amps Amps Amps Size 50 100 200 300 400 500
SINGLE PHASE - 230 VOLT
17.725 9 141414141210 8
1-1/2 9.5 30 12 14 14 14 12 10 8 8
THREE PHASE - 220 VOLT
1 3.8 15 4.5 14 14 14 14 14 14 14
1-1/2 4.8 15 5.6 14 14 14 14 14 14 14
THREE PHASE - 380 VOLT
1 2.2 15 2.5 14 14 14 14 14 14 14
1-1/2 2.8 15 3.2 14 14 14 14 14 14 14
TROUBLE – CAUSE AND REMEDY
TROUBLE AND CAUSE REMEDY
FAILURE TO PUMP
1. Pump not properly primed. 1. Make sure pump and suction line are full of water.
See priming instructions.
2. Speed too low. 2. Check voltage at motor terminals and at meter when
pump is operating. If low, refer to wiring instructions, or
check with your Power Company. Check loose connections.
3. Total head more than that for which pump was intended. 3. A pump designed for higher head is needed.
4. Suction lift is too great. 4. Locate pump close to source of water. Make sure
suction piping is large enough.
REDUCED CAPACITY AND/OR HEAD
1. Air pockets or leaks in suction line. 1. Check suction piping.
2. Clogged impeller. 2. Remove and clean.
3. Strainer too small, or clogged. 3. Use larger strainer, or clean.
4. Insufficient submergence of suction pipe. 4. Add lengths of suction pipe to keep submerged
end below the water surface.
5. Excessive suction lift. 5. If caused by suction pipe friction, enlarge piping.
Otherwise move pipe closer to water level.
6. Total head more than that for which pump was intended. 6. A pump designed for higher head is needed.
7. Excessively worn impeller and wearing ring. 7. Order replacement parts, using repair parts list in this manual.
PUMP LOSES PRIME
1. Air leaks in suction line. 1. Check suction piping.
2. Excessive suction lift and operating too near shut-off point. 2. Move pump nearer water level.
3. Water level drops while pumping, 3. Check water supply. Add length of pipe to suction
uncovering suction piping. to keep submerged end under water.
3

REPAIR PARTS LIST
Storage of Pump
Model Number
Key Part No.
5DDHE-104PMK 5DDHE3-104PMK 5DDHF-53PMK 5DDHF3-53PMK
No. Description Used 1 HP 1 HP 1-1/2 HP 1-1/2 HP
1 Motor - 1 HP, 115/230V, 1 Phase 1 J218-978A — — —
1 Motor - 1 HP, 230/460V, 3 Phase 1 — J218-980A — —
1 Motor - 1-1/2 HP, 115/230V, 1 Phase 1 — — J218-979A —
1 Motor - 1-1/2 HP, 230/460V, 3 Phase 1 — — — J218-981A
2 Water Slinger 1 N69-1 N69-1 N69-1 N69-1
3 Seal Plate 1 C3-155 C3-155 C3-117 C3-117
4 Gasket - Seal Plate 1 C20-86 C20-86 C20-87 C20-87
5 Shaft Seal 1 U109-6A U109-6A U109-6A U109-6A
6 Impeller 1 C105-92PC C105-92PCA C105-214PH C105-214PH
6A Impeller Screw 1 — C30-14SS C30-14SS C30-14SS
7 Diffuser 1 C1-275P C1-275P C1-274P C1-274P
7B Capscrew - #10 - 24 x 1" Lg. 2 U30-696SS U30-696SS — —
7B Capscrew - 1/4 - 20 x 1" Lg. 2 — — U30-53SS U30-53SS
8 Diffuser Ring 1 U9-226 U9-226 U9-226 U9-226
9 Pump Body Assembly 1 C176-49B C176-49B C76-50E C76-50E
10 Base 1 U4-5 U4-5 U4-5 U4-5
11 Pipe Plug - 3/4" NPT - Sq. Hd. 1 U78-60ZPS U78-60ZPS U78-60ZPS U78-60ZPS
12 Drain Plug 1/4” NPT 1 U78-941ZPV U78-941ZPV U78-941ZPV U78-941ZPV
13 Capscrew - 3/8 - 16 x 1" Lg. 4 U30-75ZP U30-75ZP U30-75ZP U30-75ZP
14 Capscrew - 3/8 x 16 x 3/4" Lg. 6 U30-72C U30-72C — —
14 Capscrew - 5/16 - 18 x 3/4" Lg. 8 — — U30-60C U30-60C
• Lockwasher - 3/8" 2 U43-12C U43-12C U43-12C U43-12C
• Capscrew - 3/8 - 16 x 5/8" Lg. 2 U30-71C U30-71C U30-71C U30-71C
Drain liquid from pump to prevent freezing. It is recom-
mended that a good rust inhibitor be put in the liquid end
to prevent excessive corrosion. BE SURE motor is kept
dry and covered.
When restoring the use of the pump replace all plugs
and make sure all connections are tightly sealed.
After a complete check is made, make the initial prime
according to directions under the section “PRIMING THE
PUMP.”
2419A 0496
1
2
3
14
13 7A
7B
10
12
11
5
6
7
8
(Purchase
locally)
6A
4
9
20 100
80
60
40
• Not illustrated.