IWAKI AMERICA RD Series User manual

IWAKI AMERICA
RD SERIES
DIRECT DRIVE PUMP
INSTRUCTION MANUAL

RD Series Direct Drive Pump
Table of Contents
1Unpacking and Inspection.................................................................................... 1
2Operating Principle................................................................................................ 1
3Model Identification Guide.................................................................................... 2
4Specifications ........................................................................................................ 4
5Main Parts............................................................................................................... 5
6Dimensions ............................................................................................................ 6
7Handling Instructions............................................................................................ 7
8Installation, Piping and Wiring ............................................................................. 8
8.1 Installation ........................................................................................................ 8
8.2 Piping Instructions ............................................................................................ 9
8.3 Wiring ............................................................................................................ 10
9Operation.............................................................................................................. 11
Notes on Operation............................................................................................ 11
Operation ........................................................................................................... 12
Pump Stopping Procedures ............................................................................... 13
How to store pump when it is out of use for a long time..................................... 13
Draining Method................................................................................................. 13
Draining procedure............................................................................................. 14
10 Troubleshooting and Maintenance................................................................. 15
Maintenance....................................................................................................... 15
11 Parts Description ............................................................................................. 16
P/N 180286.G Aug 2012

1
Thank you for selecting the RD Series Direct Drive Pump. This instruction manual explains
the correct handling, operating, maintenance, inspection and troubleshooting procedures for
your pump. Please read through it carefully to ensure the optimum performance, safety and
long service of your pump.
1 Unpacking and Inspection
Open the package and check that the product conforms to your order. Also, check each of the
following points. For any problem or inconsistency, contact your supplier at once.
1. Check that the model number, flow and
head indicated on the nameplate conform to
the specifications of your order.
2. Check that all the accessories you ordered
are included.
3. Check that the pump body and parts have not
been accidentally damaged or that any bolts
or nuts have not been loosened in transit.
2 Operating Principle
The RD Series pump is a canned motor type centrifugal pump driven by a DC brushless
motor. The magnet incorporated with the impeller is directly rotated in the pump chamber by
the magnetic force of the motor to discharge the liquid from suction port to the discharge port.
Iwaki Direct Drive Pump
MAX CAPACITY l/min
MAX HEAD m
VOLTS V
AMPS A
RATING
DO NOT RUN PUMP DRY
MFG No.
IWAKI CO. LTD
TOKYO, JAPAN
Motor
Discharge
Suction
Impeller
Magnet

2
3 Model Identification Guide
RD - 12 T E 24 - N1 V 12
1 2 3 4 5 6 7 8
1Pump size 05, 05H, 12, 12Z, 20, 30
2 Bearing material
No symbol: PPS with filler for RD-05 & 05H
PTFE with filler for RD-20 & 30
T: PTFE
3 O ring material
V: FKM (as an option on RD-12/12Z)
E: EPDM
4 Power source voltage 24: 24VDC
12VDC option available for OEM applications, contact Iwaki America for details.
5 Liquid Temperature Rating
No Symbol: 0 - 40 °C (RD-12, 12Z 0-60°C)
05: 60°C
H: High temperature 0 –80°C
6 Connection (Allowable pressure)
No symbol: Hose
N1: NPT thread (excluding RD-05, 05H, 20, 30)
N2: NPT thread (allowable pressure 0.6 MPa excluding RD-05,
05H, 20, 30)
7 Input signal V: 1 –5VDC
8 Motor Size (excluding RD-05, 05H, 20, 30)
12: 12W (RD-12) 14: 14W (RD-12Z)
RD-12/12Z/30 only

3
RD - 40 E 24 - H V
1 2 3 4 5 6
1 Pump size 40, 40X
2 O ring material V: FKM E: EPDM
3 Power source voltage 24: 24VDC
4 Liquid Temperature range H: High Liquid Temperature
0 –80°C
5 Connection No symbol: Hose
R1: R Thread
N1: NPT thread
6 Input signal V:1 –5VDC
.

4
4 Specifications
Model
Connections (Hose)
Max flow
GPM
(L/min)
Max head
FT (m)
Max
Specific
Gravity
Motor
Weight
Lbs (kg)
Suction
Inches (mm)
Discharge
Inches (mm)
Power (V)
Rated output
(W)
RD-05
0.55 (14)
0.32 (8)
1.2 (4.7)
11.8 (3.6)
1.0
DC24
4.4
0.9 (0.4)
RD-05H
0.55 (14)
0.32 (8)
2.1 (7.9)
36.1 (11)
1.0
DC24
18
1.1 (0.5)
RD-12
3/8 NPT
0.71 (18)
3.4 (12.7)
22.3 (6.8)
1.0
DC24
12
1.3 (0.4)
RD-12Z
3/8 NPT
0.71 (18)
1/4 NPT
0.4 (10)
1.0 (3.8)
34.4 (10.5)
1.0
DC24
14
1.3 (0.4)
RD-20
0.71
(18)
5.2 (19.5)
30.5 (9.3)
1.0
DC24
28
2.9 (1.3)
RD-30
0.71
(18)
6.2 (23.5)
37.7 (11.5)
1.0
DC24
45
2.9 (1.3)
RD-40
1 NPT
1 (25)
1/2 NPT
0.75 (19)
6.6 (25)
49.2 (15)
1.0
DC24
85
3.3 (1.5)
RD-40X
1 NPT
1 (25)
3/4 NPT
1 (25)
18.5 (70)
26.2 (8)
1.0
DC24
72
3.3 (1.5)
Notes:
1. Performance data is based on pumping clear water at ambient temperature.
2. Max. flow based on discharge pressure of 0 psi and max. head based on operating pump at shut-off.
3. Max. allowable viscosity of liquid (at specific gravity 1.0): 1 cP (1mPa-s).
4. Ambient installed temperature range: 32 –104 °F (0 - 40 °C).
5. Max. specific gravity is the value at maximum flow.
6. Motor specifications:
Pumps use a DC brushless motor equipped with the following protective functions in drive circuitry:
a. Protection against jammed impeller.
Drive circuitry will detect locked impeller and stop the pump.
b. Excessive temperatures.
The pump will stop when the motor temperature increases beyond rated temperature as a result of elevated
fluid temperature or installed environment temperature.
c. Over current protection.
The drive circuitry is protected against excessive current ( Note, RD-05 has no over current protection because
of its low output).
d. Fuse
RD’s are equipped with internal fuse to protect pump form overheating or causing damage to system when
drive circuit has been damaged. The built-in fuse cannot be replaced, so, we recommend use of an external
fuse.
Performance and dimensions of pumps may be changed without prior notice.

5
5 Main Parts
Pump unit
(Liquid feeding unit)
Discharge port
Suction port
Specifications label
Use the pump according to
the specifications on the
label.
Base
Fix the pump securely.

6
6 Dimensions
Dimensions in inches (mm)
Model
W
H
L
a
b
c
d
e
f
g
k
RD-05
2.99
(76)
2.95
(75)
3.72
(94.5)
0.63
(16)
1.18
(30)
2.52
(64)
1.18
(30)
1.16
(29.5)
0.88
(22.4)
1.98
(50.5)
2-5x7
RD-05H
2.28
(58)
3.07
(78)
4.25
(109.5)
3.54
(90)
3.94
(100)
1.38
(35)
1.30
(33)
1.16
(29.5)
0.88
(22.4)
0.57
(14.5)
2-2x6
RD-12
3.07
(78)
3.21
(81.5)
3.68
(93.5)
0.63
(16)
1.18
(30)
2.60
(66)
1.20
(30.5)
1.24
(31.5)
0.71
(18)
2.05
(52)
2-5x7
RD-12Z
3.07
(78)
3.13
(79.5)
3.68
(93.5)
0.63
(16)
1.18
(30)
2.60
(66)
1.20
(30.5)
1.24
(31.5)
0.78
(19.8)
2.05
(52)
2-5x7
RD-20/30
4.41
(112)
4.69
(119)
4.33
(110)
0.87
(22)
1.46
(37)
3.82
(97)
1.93
(49)
1.38
(35)
1.42
(36)
2.34
(59.5)
2-6x8
RD-40
4.96
(126)
5.47
(139)
5.0
(127)
0.87
(22)
2.12
(54)
4.25
(108)
2.28
(58)
1.65
(42)
1.46
(37)
2.95
(75)
4-ø6x10
RD-40X
4.96
(126)
5.63
(143)
5.0
(127)
0.87
(22)
2.12
(54)
4.25
(108)
2.28
(58)
1.65
(42)
1.57
(40)
2.95
(75)
4-ø6x10
LW
a
b
g
k
d
H
f
e(58)
c
(12)
ag
bLW
d
H
f
(106)
e
k
c
(15)
aLg
d
c
H
b(50)
ef
W
e
W
L
d
H
f
(121)
b
ag
k
RD-40(X)
k
RD-20/30
RD-05/12(Z) RD-05H

7
7 Handling Instructions
Warning
Switch off the power when the pump or its electrical parts get wet.
Keep the pump away from fire
Do not place dangerous or flammable substances near the pump.
Caution
Keep the impeller assembly away from any electronic device that could be
affected by a strong magnetic field.
Do not run pump dry, this will result in excessive bearing wear and frictional
heat damaging the pump.
1. Handle the pump carefully
Impacts caused by dropping the pump
on the floor or striking it may result in damage
or faulty performance.
2. Priming water
Be sure is installed with flooded suction and is full of
liquid before operating.
3. Magnet
There is a powerful magnet inside the
pump liquid end, do not use any liquid that
contains metallic substances such as iron,
nickel, etc.
4. Do not install/operate the pump in the following places
Places where the ambient temperature falls below 32°F (0°C).
Places where corrosive gas (such as chlorine gas) is generated.
Places exposed to splashing or dripping water.
Places where the ambient temperature is 104 °F (40°C) or above.
Places where explosive vapors or gases may be present.
The pump unit is not designed to be dust and waterproof.

8
5. Do not operate the pump with the following liquids
Liquids that significantly are not compatible with materials of construction.
Examples; Paraffinic hydrocarbons such as gasoline and kerosene.
Halogenated hydrocarbons such as trichloroethylene and carbon
tetrachloride.
Slurry
(Never use pumps in slurry applications, as premature bearing wear will result in
pump failure.)
For compatibility with chemical liquid or any special liquid, contact Iwaki America customer
service.
6. If pump is damaged
Do not operate a damaged pump, electrical shock or a short circuit may occur.
7. Power cable
A broken or frayed power cable may cause an electrical shock. Do not bend, pull or twist
power cords. Consult Iwaki America customer service if power cable is damaged and needs to
be replaced.
8. Cleaning the pump
Do not clean the exterior of the pump with a solvent such as Benzene, alcohol, etc.
8 Installation, Piping and Wiring
8.1 Installation
Pump Location
The pump must be installed in a location with an ambient temperature of 32 –104°F (0-40°C)
and a relative humidity lower than 85%. It is recommended the pump be installed so that it is
easy to inspect and maintain..
Pump Position
This pump is not the self-priming pump. The pump
must be installed in a position lower than the liquid
level of the supply tank. Recommended liquid level above
pump suction is 12 inches (30 cm). This is to prevent the pump
form sucking in air which will result premature or
accelerated bearing wear.