Instruction Manual
for: Installation, Operation, & Maintenance
DYNAPUMP
Sealless Leakproof Canned Motor Pump
LE SERIES
4/09
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Table of Contents
Paragraph Page
SECTION 1. GENERAL INFORMATION
1-1. General Design and Operation ..................................................................................................... 1
1-2. Stator Assembly ............................................................................................................................ 2
1-3. Rotor Assembly ............................................................................................................................. 2
1-4. Bearings ........................................................................................................................................ 2
1-5. Thrust Washers and Shaft Sleeves .............................................................................................. 2
1-6. Cooling Flow ................................................................................................................................. 2
1-7. Automatic Thrust Balance ............................................................................................................. 2
1-8. Safety Precautions ........................................................................................................................ 2
SECTION 2. INSTALLATION
2-1. Receipt Inspection ......................................................................................................................... 4
2-1.1. Storage Note ......................................................................................................................... 4
2-2. Structural ........................................................................................................................................ 4
2-2.1. Pump Location ...................................................................................................................... 4
2-2.2. Mounting and Alignment ....................................................................................................... 4
2-2.3. Piping Data ........................................................................................................................... 5
2-3. Electrical ......................................................................................................................................... 6
2-3.1. General ................................................................................................................................. 6
2-3.2. Thermal Cut-Out ................................................................................................................... 6
2-3.3. Starting Equipment ............................................................................................................... 6
2-3.4. Bearing Wear Monitor .................................................................................................................. 7
SECTION 3. OPERATION
3-1. Procedure Before Initial Start-up ................................................................................................... 9
3-2. Priming and Venting ...................................................................................................................... 9
3-3. Rotation Check .............................................................................................................................. 9
3-4. Starting Procedure ......................................................................................................................... 9
3-5. Operation Details .......................................................................................................................... 10
3-6. Shutdown Procedure ..................................................................................................................... 10
SECTION 4. MAINTENANCE
4-1. Recommended Tools For Disassembly, Reassembly and Inspection ....................................... 11
4-1.1. Disassembly ........................................................................................................................ 11
4-2. Inspection ...................................................................................................................................... 11
4-2.1. Bearings ............................................................................................................................... 11
4-2.2. Shaft Sleeves and Thrust Collars ........................................................................................11
4-2.3. Rotor Assembly Inspection .................................................................................................. 12
4-2.4. Stator Assembly Inspection ................................................................................................. 12
4-2.5. General Inspection............................................................................................................... 12
4-3. Reassembly .................................................................................................................................. 12
i
FIGURES & TABLES
Figures
1-1 Dynapump LE Series Standard Circulation ................................................................................ 1
2-1 Dynapump LE Series Wiring Diagram 460 Volt, 3 Phase ........................................................... 7
2-2 Teikoku Rotary Guardian .......................................................................................................... 7
4-1 Dynapump LE Series Bearing Wear ........................................................................................... 13
4-2 Dynapump LE Series “g” Gap ..................................................................................................... 13
Tables
2-1 Dynapump LE Series Electrical Data .......................................................................................... 7
2-2 Trouble Shooting ......................................................................................................................... 8
4-1 Dynapump LE Series Bearing Wear Limit .................................................................................. 14
4-2 Dynapump LE Series Playing Gap of Rotor (Axial End Play) .................................................... 14
4-3 Dynapump LE Series Adjusting Value of Gap “g” ....................................................................... 14
4-4 Dynapump LE Series Tightening Torque for Impeller Bolt .......................................................... 14
APPENDIX
Trouble Analysis Sheet ........................................................................................................ ..................... A-1
Decontamination Certifi cation and Flushing Procedure (Page 1 of 2) ..................................................... A-2
Decontamination Certifi cation and Flushing Procedure (Page 2 of 2) ..................................................... A-3
Cross Section Drawing
D-65214 ............................................................................................................................................ A-4
LE Minimum Flows ................................................................................................................................... A-5
Outline Drawing
Standard - C-60538 .......................................................................................................................... A-6
With ANSI Baseplate - C60541.......................................................................................................... A-7
ii
CAUTION
Dynapump LE Series are canned motor, sealless pumps that offer a low cost, off the
shelf, environmentally friendly alternative to sealed and single containment sealless
pumps. Care should be exercised upon installation, start up, removal and maintenance
of the pumps. Recommended safety equipment should be used at all times.
Prior to returning any Dynapump LE Series to the factory the following procedure must
be followed:
1. Return Authorization must be obtained from the factory.
2. The pump must be decontaminated and cleaned.
3. The pump must be accompanied by a Decontamination Form, completely
filled out and signed by a responsible individual at the customer’s facility.
(Refer to copy of Decontamination Form in the Appendix of the Instruction
Manual.)
It is recommend that, as a minimum, a set of bearings and gaskets be purchased for
each Dynapump LE Series installed. When ordering spare parts, please reference the
serial number and model designation indicated on pump nameplate. When ordering an
impeller assembly, specify the diameter which can be measured across the blade tips.
Dynapump LE Series purchased for a particular application should only be used for that
service. Metallurgy, bearing materials and motor size may not be compatible if used on
a different application. Consult your local, authorized Teikoku USA Inc / Chempump
representative or distributor, or contact the factory for confirmation.
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SECTION 1. General Information
1.1 General Design and Operation
The Dynapump LE Series is a combined centrifugal
pump and squirrel cage induction electric motor built
together into a single hermetically sealed unit. The
pump impeller is of the closed type, and is mounted
on one end of the rotor shaft, which extends from the
motor section into the pump casing. The rotor is submerged in the fluid being pumped and is, therefore,
“canned” to isolate the motor rotor from contact with
the fluid. The stator winding is also “canned” to isolate it from the fluid being pumped. Bearings are
submerged in system fluid and are therefore, lubricated by the process fluid.
The Dynapump LE has only one moving part, a combined rotor-impeller assembly that is driven by the
induced magnetic field of an induction motor. A portion of the pumped fluid is allowed to re-circulate
through the rotor cavity to cool the motor and lubricate the bearings. The stator windings are protected
from contact with the re-circulating fluid by a corrosion resistant, non-magnetic, alloy liner, which completely seals or “cans” the stator winding. The recirculating fluid is channeled into the motor section
by holes drilled in the front bearing housing. A portion of the pumpage flows across the front bearing
and returns to the rear of the impeller. The remainder passes over the rotor, across the rear bearing,
and returns to suction through a hollow shaft. See
Figure 1-1.
The Dynapump LE offers true positive secondary
containment as a standard design feature. In the
event of a failure of the primary containment can, the
stator assembly in conjunction with the leak proof
terminal post assembly provides the secondary con-
tainment. This design prevents any release of the
process fluid out to the atmosphere.
A standard feature of the Dynapump LE is the patented Teikoku Rotary Guardian (TRG). The TRG is
an electrical meter that continuously monitors the
condition of the bearings. For more information on
the TRG refer to 2-3.4 Bearing Wear Monitor, Page 7.
The Dynapump LE sealless pump is a precisionbuilt unit that, with proper care, will give years of
trouble-free, leakproof service. The entire unit is
mounted on a fabricated steel base cradle. Operation is unaffected by the mounting or operating position, eliminating the need for any costly alignment
procedures. This manual, containing basic instructions for installation, operation and maintenance of
the Dynapump LE Series, is designed to assist you
in obtaining this service.
It is important that the persons responsible for the
installation, operation, and maintenance of the pump,
read and understand the manual thoroughly.
Trouble-free Dynapump LE performance begins with
proper pump selection and application. If the selected pump does not have the required performance
characteristics, or if the materials of construction are
not properly specified for the fluid being handled,
unsatisfactory operation may result. No amount of
maintenance can compensate for this.
If you are in doubt about proper Dynapump LE selection or application, write or call your Dynapump LE
engineering representative or the factory for assistance. Additional copies of this manual are available
from the Dynapump LE field representative, the fac-
tory or on our website: www.dynapump.com.
Figure 1-1. Dynapump LE Series Standard Circulation
Page 1
1-2. Stator Assembly
1-5. Thrust Collars and Shaft Sleeves
The stator assembly consists of a set of three-phase
windings connected in a one-circuit wye arrangement. Stator laminations are of low-silicon grade
steel. Laminations and windings are mounted inside the cylindrical stator band. End bells, welded to
the stator band, close off the ends of the stator assembly. The stator liner is, in effect, a cylindrical “can”
placed in the stator bore and welded to the rear end
bell and front end bell to hermetically seal off the
windings from contact with the liquid being pumped.
Terminal leads from the windings are brought into
an oversized electrical terminal box. Motor lead wires
are isolated from the users’ conduit line by a leakproof terminal post assembly mounted inside the
terminal box. The design of the stator assembly in
conjunction with the leakproof terminal post assembly provides a true positive secondary containment.
1-3. Rotor Assembly
The rotor assembly is a squirrel cage induction rotor
constructed and machined for use in the Dynapump
LE. It consists of a machined corrosion resistant
hollow shaft, laminated core with cast aluminum bars
and end rings, corrosion resistant end covers, and a
corrosion resistant can. The impeller is keyed to the
shaft and held in place with a bolt and lockwasher.
All Dynapump LE models are equipped with thrust
collars providing a replaceable surface against which
axial loads can be carried during process upset conditions. The shaft is also fitted with replaceable shaft
sleeves. Both the thrust collars and shaft sleeves
are constructed of 316SS with a hard chrome wear
surface for long life. These parts are pinned or keyed
to prevent rotation.
1-6. Cooling Flow
Cooling for stator, rotor, and bearings, as well as
bearing lubrication, is provided by circulation of the
pumped fluid. A portion of the process fluid enters
the motor section through ports in the front bearing
housing. The fluid flows across the front bearing
and returns to the rear of the impeller. The remainder passes over the rotor, across the rear bearing,
and returns to suction through the hollow shaft. See
Figure 1-1, Page 1.
1-7. Automatic Thrust Balance
Based on hydraulic principles, Dynapump LE’s automatic thrust balance is accomplished by the pressure of the pumped fluid itself, operating in a balance chamber at the front and rear of the impeller.
The rotor end covers are welded to the shaft and
also to the rotor can which surrounds the outside of
the rotor, thus hermetically sealing off the rotor core
from contact with the liquid being pumped.
The shaft is fitted with replaceable shaft sleeves and
thrust collars. These parts are pinned or keyed to
prevent rotation. Axial movement is restricted by the
thrust collars contacting the face of the front and rear
bearings.
1-4. Bearings
The bearings for the Dynapump LE Series are carbon graphite as standard (silicon carbide is available as an option) and are machined with special
helix grooves through the bore to assure adequate
fluid circulation at the journal area. Each bearing is
manufactured to close tolerances for a high degree
of concentricity and is held in a bearing housing by a
retaining screw. Bearings are easily replaced by removing the retaining screw and sliding the bearing
from its housing.
When a change in load shifts the position of the impeller away from the balance condition, there is an
equalizing change of hydraulic pressure in the balance chamber, which immediately returns the impeller-rotor assembly to the balanced position.
1-8. Safety Precautions.
1. Do not run pump dry. If the pump is allowed to
run dry the bearing sleeves and other components will be damaged and serious overheating
of the motor windings will occur.
2. Avoid rapid temperature changes. Rapid
changes in temperature can cause leaks to occur in the gasket areas of the pump.
3. Pump may be hot. Motor section of the pump
can be very hot, even when pumping cool liquids. Motor windings are rated to 356o F.
4. If the motor trips due to the thermal cutouts, do
not restart before determining the cause.
Page 2
Restarting the motor before ascertaining the
cause can result in excessive heat leading to
premature failure.
5. Do not remove internal bolts in the terminal box
without taking the necessary precautions. The
electrical junction box is a pressure-containing
component of the pump. It is possible the fluid
you are pumping may be present in the motor
cavity in the event of a stator liner rupture.
6. Do not remove any bolts on the pump, motor or
drain plug without taking the necessary precautions. The pump may be under pressure. Always
loosen the drain plug slowly to relieve any inter-
nal pressure before attempting to disassemble
the pump. Adequate precautions must be taken
if the liquid in the pump could be hazardous to
personnel or the environment.
7. Always assume that there is liquid left in the
pump. There is always the possibility that residual liquid could remain in the pump and
motor, even after thorough decontamination. Pay
particular attention to the clearances between
the shaft and the impeller, bearings, sleeves,
bearing housings, and gaskets. Adequate precautions must be taken if the liquid in the pump
could be hazardous to personnel or the environment.
Page 3
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SECTION 2. Installation
2-1. Receipt Inspection
1. Visually inspect the shipping container for evidence of damage during shipment.
2. Check unit to see that suction, discharge and
any other connections are sealed.
3. Inspect the suction and discharge gasket seating surface to be certain that they are clean of
foreign matter and free from nicks, gouges and
scratches.
4. Check all nameplate data against shipping papers.
2-1.1. Storage Note
In situations where a Dynapump LE Series is to be
stored for a period of time prior to installation and
where the climate experiences wide temperature
changes and high humidity, the terminal box, suction and discharge flange, and any other openings
must be sealed to prevent moisture from entering
the internals of the pump.
suction lift are possible but not recommended.
Location of the pump and arrangement of the system should be such that sufficient NPSH (Net Positive Suction Head) is provided over vapor pressure
of the fluid at the pump inlet. NPSH requirements at
the design point are stated on the pump order data
sheet. For additional design points, refer to the corresponding performance curves located in the Appendix of this manual.
NOTE
Experience has proven that most pump
troubles result from poor suction conditions including insufficient NPSH. The suction line must have as few pressure drops
as possible and available NPSH MUST be
greater than required NPSH.
Depending on job conditions, available NPSH can
sometimes be increased to meet the NPSH required
by the pump for satisfactory operation. NPSH can be
“tailored” by changes in the piping, in liquid supply
level, by pressurizing the suction vessel and by several other methods. Refer to Table 2-2, Page 8,
Trouble Shooting.
2-2. Structural
The pump design and construction eliminates the
necessity of aligning the pump and motor. The pump
should be supported from the mountings provided.
It should be mounted in such a way as to have its
weight properly supported. Suction and discharge
piping must be properly supported and aligned so
that no strain is placed on the pump casing.
General
1. Remove burrs and sharp edges from flanges
when making up joints.
2. When connecting flanged joints, be sure inside
diameters match within 1/16" so as not to impose a strain on the pump casing.
3. Use pipe hangers or supports at intervals as
necessary.
2-2.1. Pump Location
Locate the pump as close as possible to the fluid
supply with a positive suction head. Installations with
2-2.2. Mounting and Alignment
The Dynapump LE Series combines a pump and
motor in a single hermetically sealed unit. No tedious coupling alignment is required because the
pump has no external coupling between pump and
motor. All models can be mounted in any position.
For mounting with discharge on the side or in any
other position other than top discharge, please contact the factory. Modifications must be made to the
standard internal venting arrangement and hydraulic thrust balance system.
Base cradles are offered on all models. Simply set
the pump on a foundation strong enough to support
its weight. There is no need to bolt down or grout in a
Dynapump LE Series. All Dynapump LE Series models are provided with a specially made base designed to mount on a standard ANSI base plate to
facilitate inspection and repair.
Be sure that the suction and discharge piping is properly aligned so that no strain is placed on the pump
casing by out-of-line piping.
Page 4
2-2.3. Piping Data
Observe the standards of the Hydraulic Institute when
sizing and making up suction and discharge piping.
Follow these procedures:
It is extremely important to design and size the suction
system to minimize pressure losses and to be sure
that the pump will not be “starved” for fluid during
operation. NPSH problems are a result of improper
suction systems.
1. Remove burrs and sharp edges when making
up joints.
2. When using flanged joints, be sure inside diameters match properly. When gasketing flanged
joints, DO NOT cut flow hole smaller than flange
opening.
3. Use pipe hangers or supports at necessary intervals.
4. Provide for pipe expansion when required by fluid
temperature.
5. When welding joints, avoid possibility of welding
shot entering the suction or discharge line, and
thereby entering the pump. Do not weld pipe
while connected to pump.
6. When starting up a new system, it is recommended to place a temporary 3/16" mesh screen
at or near suction port of pump to catch welding
shot, scale or other foreign matter. Refer to Section 3-1, Page 9.
7. Do not spring piping when making up any connections.
8. Make suction piping as straight as possible,
avoiding unnecessary elbows. Where necessary,
use 45 degree or long-sweep 90 degree fittings.
9. Make suction piping short, direct, and never
smaller in diameter than suction opening of
pump. Suction piping should be equal to or larger
than pump suction port, depending on pipe
length.
10. Insure that all joints in suction piping are airtight.
11. When installing valves and other fittings, position them to avoid formation of air pockets.
12. Permanently mounted suction filters are not recommended.
If suction pipe length is short, pipe diameter can be
the same size as the pump suction port diameter. If
suction piping is long, the size should be one or two
sizes larger than pump suction port, depending on
piping length. Use the largest pipe size practical on
suction piping and keep piping short and free from
elbows, tees or other sources of pressure drop.
If elbows, tees or valves must be used, locate them
from 10 to 15 pipe diameters upstream from suction. When reducing to pump suction port diameter,
use eccentric reducers with eccentric side down to
avoid air pockets.
When operating under conditions where pump prime
can be lost during off cycles, a foot valve should be
provided in the suction line to avoid the necessity of
priming each time the pump is started. This valve
should be of the flapper type rather than the multiple
spring type and of ample size to avoid undue friction
loss in the suction line.
When foot valves are used, or when there are other
possibilities of fluid hammer, it is important to close
the discharge valve before shutting down the pump.
When it is necessary to connect two or more pumps
to the same suction line, provide gate valves so that
any pump can be isolated from the line. Install gate
valves with stems horizontal to avoid air pockets.
Globe valves should be avoided, particularly where
NPSH is critical.
If discharge pipe length is normal, pipe diameter
can be the same size as the pump discharge port
diameter. If discharge piping is of considerable
length, use larger diameter pipe (one or two sizes
larger).
If the pump is to discharge into a closed system or
an elevated tank, place a gate valve or check valve in
the discharge line close to the pump. The pump can
then be opened for inspection without fluid loss or
damage to the immediate area.
Page 5
RECOMMENDED
Install properly sized pressure gauges in
suction and discharge lines near the pump
ports so that operation of the pump and
system can be easily observed. Should cavitation, vapor binding, or unstable operation
occur, widely fluctuating discharge pressures will be observed.
Such gauges provide a positive means of determining actual system conditions and can be used to
great advantage in evaluating system problems.
2-3. Electrical
2-3.1. General
Except where indicated, all Dynapump LE Series are
started with full line voltage. Refer to Paragraph 3-3,
Page 9, for checking direction of rotation. Also see
Wiring Diagram Figure 2-1, Page 7 for proper wiring
connections.
WARNING
The thermal cutout switch does not provide
protection against fast heat build-up resulting from locked rotor conditions, single
phasing or heavy overloads. The current
overload relay heaters in the magnetic
starter must provide for this protection. The
rating of the heaters should be high enough
to avoid nuisance cut outs under running
loads, but must not be oversized. Refer to
Table 2-1, Page 7, for starting and running
electrical characteristics. It is recommended that “quick trip” (Class 10) heaters be used because of the more rapid response time.
2-3.3. Starting Equipment
Motor starters (normally not supplied with Dynapump
LE Series) should be sized to handle the load required. Full Load HP, Full Load Amps and Start KVA
Data is listed in Table 2-1, Page 7.
2-3.2. Thermal Cutouts
All Dynapump LE Series are fitted with a thermal
cutout. The cutout is a heat-sensitive bimetallic
switch mounted in intimate contact with the stator
windings. The TCO wiring diagram is shown in Figure 2-1, Page 7. Maximum holding coil currents is
3.1 AMPS for 115 volts.
WARNING
Do not connect TCO in series with main
power lead. Excessive heat build up in the
winding area opens the normally closed
thermal switch, which, in turn, opens the
holding coil circuit, shutting off power to
the pump. Be sure to connect the thermal
cutout as required.
Thermal cutouts in Class H insulated motors are
set to open at 356
o
F (180o C). If the motor cuts out
because of TCO action, there will be a time delay
before the motor can be restarted. The motor must
be restarted manually.
DO NOT RESTART UNTIL YOU DETERMINE THE
CAUSE OF THE OVERHEATING.
Heaters in the starters should be sized for the amperage shown on the Dynapump LE Series nameplate. DO NOT size heaters in excess of 10% of full
load amp rating. In order to provide complete protection for Dynapump LE Series motors under all conditions, it is recommended that “quick trip” (Class
10) type heaters be used in the starters where available. Standard heaters provide adequate protection
for Dynapump LE Series motors under starting or
normal running conditions, but require a greater
length of time than “quick trip” type heaters to cut out
if the motor is subject to locked rotor or overload
conditions.
CASE I - 460 Volt, 3-Phase Dynapump LE Series (See
Figure 2-1, Page 7).
Typical 3-phase across-the-line magnetic starter with
start-stop push button station shown.
Thermo switch (thermal cutout inside Dynapump LE
Series motor) is wired as shown in Figure 2-1, Page
7.
Be sure to size heaters properly. Motor data can be
found on the pump nameplate.
Page 6
Figure 2-1. Dynapump LE Series 460-Volt, 3-Phase
2-3.4. Bearing Wear Monitor
The TRG METER is color coded for easy recognition:
- Green = Normal operation.
- Yellow = Pump should be scheduled for
maintenance.
- Red = Pump should be shut down and
removed for maintenance.
There is no requirement for resetting of the TRG after replacement of worn components. Once the
worn components are replaced and the pump is returned to service, the TRG meter will return to the
Green position.
The TRG has been designed to accommodate a variety of output options and can be configured to match
existing or future plant instrumentation without significant modification.
The Dynapump LE Series patented Teikoku Rotary
Guardian (TRG) takes the mystery out of pump reliability by continuously monitoring the critical running
clearances between the rotating and stationary components. The TRG is mounted on the electrical junction box as standard.
The TRG meter operates on the principle of induced
voltage. Electric coils are embedded in the stator
windings and an electric current is produced with
the rotation of the rotor assembly. When the rotor is
perfectly centered in the stator between the coils the
electric currents are balanced and no voltage is detected. When bearing wear occurs the rotor moves
toward one coil and away from the other producing a
low voltage that is indicated by the TRG meter. As
this gap becomes larger the voltage increases. The
TRG should be monitored frequently to determine
the condition of the pump.
Figure 2-2. Dynapump LE Series TRG
Table 2-1. Dynapump LE Series Electrical Data
MOTOR INSUL VOLT PHASE HERTZ RPM FULL FULL FULL START STARTING LOCKED OPER
SIZE CLASS LOAD LOAD LOAD KVA AMPS ROTOR TEMP
AMPS KW HP CODE CODE
3111 H 460 3 60 3450 3.1 1.4 1.8 8.3 10.4 E T3A
3115 H 460 3 60 3450 5.5 2.5 3.3 15.4 19.4 E T3A
3211 H 460 3 60 3450 8.0 4.0 5.3 22.7 28.5 D T3A
3215 H 460 3 60 3450 14.5 7.5 10.0 41.3 51.8 D T3A
3311 H 460 3 60 3450 17.0 8.8 11.7 49.6 62.3 D T3A
3315 H 460 3 60 3450 24.0 12.4 16.6 76.1 95.5 E T3A
Page 7
Table 2-2. Trouble Shooting
Trouble
I. Failure to Deliver
Required Capacity
II. Insufficient Pressure
Cause
a. Pump not primed.
b. Air leaks in suction piping.
c. Motor not energized.
d. Motor windings burnt out or
grounded.
e. Low suction head.
f. Discharge head too high.
g. Discharge valve closed or
partially opened.
h. Impeller clogged.
i. Wrong direction of rotation.
j. Damaged impeller.
a. Pump not primed.
b. Air leaks in suction piping.
c. Motor not energized.
d. Motor windings burnt out or
grounded.
e. Low suction head.
f. Discharge valve open too wide.
g. Impeller clogged.
h. Wrong direction of rotation.
i. Damaged impeller.
Remedy
a. Re-prime pump in accordance with Paragraph 3-2.
b. Locate leaks and eliminate.
c. Check motor wiring. See Paragraph 2-3.
d. Check electrical continuity of windings and if
negative response, stator assembly needs to be
replaced.
e. Correct suction side of system to insure availability
of design NPSH.
f. Correct discharge side of system to insure proper
operating conditions.
g. Open discharge valve until rated discharge pressure
is obtained.
h. Remove obstructions in the impeller.
i . Reverse any two motor leads and check with phase
sequence meter. See Paragraph 3-3.
j. Impeller must be repaired or replaced.
a. Re-prime pump in accordance with Paragraph 3-2.
b. Locate leaks and eliminate.
c. Check motor wiring. See Paragraph 2-3.
d. Check electrical continuity of windings and if
negative response, stator assembly needs to be
replaced.
e. Correct suction side of system to insure availability
of design NPSH.
f. Close down discharge valve until rated discharge
pressure is obtained.
g. Remove obstructions in the impeller.
h. Reverse any two motor leads.
i. Impeller must be repaired or replaced.
III. Pump Loses Prime After
Starting
IV. Pump Takes Too Much
Power
V. Pump Vibrates
VI. Motor Running Hot
a. Pump not properly primed at
starting.
b. Air leaks in suction piping.
c. Air or gas in fluid.
d. Low suction head.
a. Shaft bent.
b. Rotating element binds.
c. Electrical short.
d. Wrong direction of rotation.
a. Foundation not sufficiently rigid.
b. Impeller partially clogged.
c. Shaft bent.
d. Worn bearings.
e. Rotating element rubbing stator
liner.
a. Motor operating at overload
condition.
b. Pump is operating below
minimum flow.
c. Pump is running dry.
a. Reprime pump in accordance with Paragraph 3-2.
b. Locate leaks and eliminate.
c. Locate source of gas or air entrainment and correct.
d. Correct suction side of system to insure availability
of design NPSH.
a. Replace rotor assembly or straighten shaft if bend is
not too great.
b. Replace bearings (See Paragraph 4-1) as a result
of excessive wear, or check for presence of foreign
material in rotor chamber.
c. Check electrical continuity of all phases of the motor
winding and replace stator assembly if necessary.
d. Reverse any two motor leads.
a. Tighten all bolts on with the pump base and base
supporting structure.
b. Remove obstructions in the impeller.
c. Replace rotor assembly or straighten shaft if bend is
not too great.
d. Replace bearings (See Paragraph 4-1).
e. Replace bearings (See Paragraph 4-1) as a result
of excessive wear or check for presence of foreign
material in rotor chamber.
a. Make sure pump is operating at design point and
conditions specified when purchased.
b. Increase the flow thru the pump.
c. Check suction line for obstructions and closed valves.
Page 8
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SECTION 3. Operation
3-1. Procedure Before Initial Start
Before starting the pump for the first time, make sure
suction and discharge piping are free of tools, nuts,
bolts, or other foreign matter. Save time and money
by checking before start-up.
RECOMMENDED
Install a temporary 3/16" mesh screen near
the suction port to trap scale and other foreign particles. The screen can be installed
for 24 hours of operation, but watch closely
that the pump does not become starved
for fluid because of a clogged screen. REMOVE SCREEN AFTER 24 HOURS OF RUNNING.
3-2. Priming and Venting
The pump must be primed before operating. Priming requires the filling of the pump casing and motor
chamber with liquid.
When there is a positive suction head on the pump,
priming can be accomplished by opening the valves
in the suction and discharge line, and allowing the
pump casing and motor chamber to fill. The
Dynapump LE Series is centerline discharge and is
self-venting when installed in the horizontal position.
3-3. Rotation Check
Centrifugal pump impellers must rotate in the proper
direction to deliver rated head and capacity. The impeller must rotate in the same direction as the arrow
cast on the pump casing.
A. A hand-held direction of rotation indicator is
available from Teikoku USA Inc and the
Chempump Division. This portable device
can be used to confirm the rotation of any
motor.
B. Use a phase sequence meter on the electri-
cal connections.
C. After the Dynapump LE is properly primed
and vented, open suction valve 100% and
start the unit with the discharge valve 20%
open. Note the discharge pressure at a pressure gauge, which should be installed between the pump casing and discharge valve.
Reverse any two of the three power leads
and read the pressure gauge again. The
higher pressure is the correct direction of
rotation. It is recommended that the unit be
run as little as possible with a closed discharge valve in order to prevent excessive
overheating of the fluid circulating within the
unit.
NOTE
If a discharge valve is not available an alternate method is to use a flow meter and
determine higher flow rate. Wrong direction of rotation is indicated by a low discharge pressure or flow rate. At shut-off,
head is about 2/3 of the head produced by
correct rotation. Continued operation in reverse can result in damage to the pump. If
reverse rotation has occurred, it is wise to
shut down the unit and tighten the impeller
bolt before restarting.
The correct direction of rotation can be checked as
follows:
Wire Dynapump LE Series motor for correct voltage.
1. With main power leads connected, check direction of impeller rotation. If the unit is not installed
in the system, rotation can be observed by “bumping” the motor and looking into the suction flange.
NEVER LOOK INTO THE DISCHARGE FLANGE. If
direction of impeller rotation is incorrect, change
two power leads.
2. If the pump is installed and primed, the direction
of rotation can be checked by the following methods:
Once you have determined correct rotation, tag correctly connected main power leads, in accordance
with motor lead markings.
3-4. Starting Procedure
After priming, venting, and checking the direction of
rotation, put the pump in operation as follows:
1. Fully open the valve in the suction line.
2. Set the valve in the discharge line to 20% open.
3. Start the pump. Pump should operate with very
low noise and vibrations. Excessive or abnor-
Page 9
mal noise or vibrations should be corrected immediately.
4. When the pump is running at full speed, slowly
open the valve in the discharge line to the desired setting.
5. Once pump is operational, check the reading of
the TRG meter. If the meter is in the green, pump
is operating normally. If the meter is in the yellow
or red, stop the pump and check for possible
causes of the incorrect reading. Record initial
reading for comparison to future readings.
corded, then the color coding system shown in section 2-3.4, Page 7 may be used to determine bearing
changing intervals. If the TRGi was recorded, then
the following formulas can be used. If the reading
exceeds TRGi +0.3, then the pump should be scheduled for maintenance. If the reading exceeds TRGi
+0.4, then the pump should be shut down and removed for maintenance.
Discharge pressure should be checked frequently
during operation. Pressure should be stable in a
non-variable closed loop although the discharge
pressure gauge needle may show small fluctuations.
CAUTION
The pump should not be allowed to run for
more than one minute with the discharge
valve fully closed.
NOTES:
1. If the suction and discharge lines are completely
filled with system fluid and adequate suction head
is available, the pump can be started without closing the discharge valve. During any start up sequence, caution must be exercised not to exceed
full load ampere rating indicated on the nameplate.
2. If the unit has not been run for a period of two
weeks or more, the following inspections should
precede its operation:
A . Check terminal box for moisture.
B. Upon starting, check for excessive noise, vi-
bration, erratic speeds or excessive amp
draw.
In some cases, the fluid supply may contain an excessive amount of air or gas, which will tend to separate from the fluid and remain in the passages of the
pump. This results in the pump losing its prime and
becoming air bound with a marked reduction in capacity. The discharge pressure gauge will show large
fluctuations if this occurs.
3-6. Shutdown Procedure
Shutdown as follows:
1. Close the valve in the discharge line.
CAUTION
The pump should not be allowed to run for
more than one minute with the discharge
valve fully closed.
2. Stop the pump (De-energize the motor).
3. Close suction valves if pump is to be removed
from service.
CAUTION
If the pump appears to be air bound as a
result of the unit not being properly primed,
do not continue operation. Locate and correct the conditions that prevent proper priming before attempting to start the unit.
3-5. Operation Details
TRG meter should be checked periodically during
operation. If the initial reading (TRGi) was not re-
CAUTION
If the pump is to be shut down for a long
period of time or if there is danger of freezing, after stopping the pump, shut all suction and discharge valves, and drain the entire pump and connected piping.
NOTE
To assist in determining remedies for various problems, see Table 2-2, Page 8
Trouble Shooting.
Page 10
SECTION 4. Maintenance
4-1. Recommended tools for Disassembly
Reassembly and Inspection.
Size Description
17 mm Socket wrench for pump cas-
ing, rear bearing housing
bolts, rear shaft sleeve retaining bolt, and impeller
retaining bolt M10.
19 mm Socket wrench for impeller
retaining bolt M12.
3 mm Hex wrench for bearing re-
taining screws.
5 mm Hex wrench for front bearing
housing retaining bolts.
.200" Travel Dial Indicator to
measure endplay.
Dial calipers To measure bearing wear.
Feeler Gauges To measure “g” gap.
7. Measure and record the “g” gap before further
disassembly. See Figure 4-2, on Page 13.
8. To remove impeller, extend tabs of lock washer
and remove impeller bolt. Be careful of small
parts that can be lost.
9. Remove socket head cap screws and remove
Front Bearing Housing from Stator Assembly.
Exercise care while removing this housing because of liquids which may be contained in the
stator assembly.
10. Remove Rear Bearing Housing Bolts and remove
Rear Bearing Housing from Stator Assembly.
Exercise caution while removing this housing
because of liquids which may be contained in
the Stator Assembly.
11. Remove Rotor Assembly. Place on a clean cloth
to avoid damage. During the removal of the rotor
take care in handling the rotor to prevent damage to the rotor or stator because the rotor will
drop once the armature clears the stator assembly and the rotor shaft may hit the stator liner if
not properly supported.
Torque Wrench To measure bolt tightness.
4-1.1. Disassembly
1. Fully close valves in discharge, suction and utility piping.
2. Disconnect the power cables from the connection box prior to disassembly.
WARNING
SAFETY HAZARD TO PERSONNEL WILL
EXIST IF THIS STEP IS NOT FOLLOWED.
3. Remove drain plug or open drain valve to drain
liquid in the pump.
4. Since piping loads may exist, insert bracing under casing.
5. Remove casing bolts. Be careful not to spill any
remaining fluid that may be trapped in casing.
6. Remove anchor bolting in order to slide pump
out of casing. Casing will remain attached to piping.
12. Remove front shaft sleeve and front thrust collar.
13. To remove rear Shaft Sleeve and thrust collar,
bend tabs up on lock washer and unscrew bolt.
This bolt has left hand threads.
14. To remove bearing, remove set screw and slide
out bearing.
4-2. Inspection
4-2.1. Bearings
Check the following points:
A. Thrust face for scratches and chips. Refer
to Table 4-1(L), Page 14 for excess wear
on thrust surface. (Check this dimension
after bearing has been removed.)
B. Wear inside of bearing bore. Refer to Table
4-1 (A – B), on Page 14.
4-2.2. Shaft Sleeves and Thrust Collars
The rotor assembly shaft sleeves and thrust surfaces
should also be visually inspected at the bearing con-
Page 11
tact area for general appearance and uniform wear.
Excessive undercutting, pitting, or scoring is cause
for replacement.
Check the following points:
A. Corrosion
B. Contact marks and wear.
3. Slide on Rear Thrust Collar, verifying that the
Thrust Collar is installed correctly. Slide on the
Rear Shaft Sleeve insuring that the Shaft Sleeve
is tight against the Thrust Collar and is engaged
in the anti-rotational key or pin. Install the Flat
Washer, Lock Washer, and Lock Bolt insuring
that the Lock Washer tab is engaged in the slot
in the Shaft Sleeve. Torque Lock Bolt per Table
4-4, Page 14. This bolt has left hand threads.
4-2.3. Rotor Assembly Inspection
The complete rotor assembly should be visually inspected for cracks, breaks, pitting, or corrosion which
might destroy the effectiveness of the hermetically
sealed rotor end covers and sleeve.
4-2.4. Stator Assembly Inspection
The complete stator assembly should be visually inspected for cracks, breaks, pitting, or corrosion of the
stator liner which may destroy the effectiveness of
the barrier. Inspect the inside of the electrical junction
box for corrosion and moisture.
4-2.5. General Inspection
1. Inspect the impeller bolt threads on the rotor shaft
to ensure they are not damaged. LE Series
Dynapumps have right hand threads.
2. Be sure that all mating faces are free of nicks and
burrs so that they will have a smooth face
ensuring a good seal. Clean off any trace of old
gasket material.
3. Make sure all parts are clean. Inaccessible area
may be cleaned with a small brush or pointed
tool.
4. Slide on Front Thrust Collar, verifying that the
Thrust Collar is installed correctly. Slide on the
Front Shaft Sleeve insuring that the Shaft Sleeve
is tight against the Thrust Collar and is engaged
in the anti-rotational key or pin. Slide assembled
Rotor into Stator with rear end of Rotor extending
out of the Stator.
5. Install the Rear Stator Gasket. Slide the Rear
Bearing Housing onto the Rotor and slide the
Rear Bearing Housing and Rotor into the Stator.
Take care to tighten bolting evenly. Torque Bolts
per Table 4-5, Page 14.
6. Slide Front Bearing Housing onto Rotor and into
Stator. Take care to tighten bolting evenly. Insure
that the Shaft Sleeve is tight against the Thrust
Collar and is engaged in the anti-rotational key
or pin.
7. Slide Adjusting Washers onto Rotor Shaft. Slide
Impeller onto Rotor Shaft, install the Flat Washer,
Lock Washer and Lock Bolt insuring that the Lock
Washer tab is engaged in the Impeller key slot.
Check Rotor Assembly endplay. End play should
be within the range indicated in Table 4-2, Page
7. If the rotor assembly does not fall within this
range, discard the old bearings and change to
new bearings.
4. The impeller face should be inspected for wear.
If excessive grooving or scoring of the wear rings
is evident, the impeller must be repaired or
replaced.
4-3. Reassembly
1. Clean and dry all parts. Reassemble in the reverse manner of disassembly.
2. Insert bearing with flat washer into front and rear
bearing housings. Position flat washer side of
bearing in line with set screw hole. While holding bearing down tighten set screw.
NOTE
The front bearing has only spiral grooves,
the rear bearing has spiral and straight
grooves.
8. Adjusting the “g-gap” using Figure 4-2, Page 13
and Table 4-3, Page 14. Pull impeller forward
and with adjusting washers, installed behind impeller in place, Gap “g” should be within indicated ranges using Table 4-3, Page 14. If gap is
not within specified range, use adjusting washers behind impeller to make adjustments.
9. Make sure impeller bolt is tight (use Table 4-4,
Page 14. for correct torque values) and lock
washer locking tabs are bent over.
10. Assembled pump should rotate freely by hand
with no metal to metal contact.
11. Install Pump Case Gasket. Slide pump back
into casing and tighten all bolts. Add new Teflon
tape to plugs where needed. Torque Bolts per
Table 4-5, Page 14.
Page 12
Figure 4-1. Bearing Wear
Figure 4-2. “g” Gap
Page 13
TABLE 4-1. Bearing Wear Limit
Note: 15A = Front Bearing, and 15B = Rear Bearing
Motor Frame Number * A-B L
3111, 3115(15B) 0.3mm (0.012 in.) 44.2mm (1.746 in.)
3115(15A), 3211, 3215(15B) 0.4mm (0.016 in.) 49.2mm (1.937 in.)
3215(15A)3311, 3315(15B) 0.4mm (0.016 in.) 59.2mm (2.331 in.)
3315(15A) 0.4mm (0.016 in.) 69.2mm (2.724 in.)
TABLE 4-2. Playing Gap of Rotor (Axial End Play)
Motor Frame Number * New Bearing
3111 0.7~1.9mm (0.028~0.075 in.)
3115, 3211 0.7~2.1mm (0.028~0.083 in.)
3215, 3311 0.7~2.1mm (0.028~0.083 in.)
3315 0.9~2.5mm (0.035~0.098 in.)
TABLE 4-3. Adjusting Value of Gap “g”
Note: “g” Gap has a +/-0.1mm adjustment range or +/-0.004 in. tolerance
Motor Frame Number * Impeller Size “g” Adjusted
3111 SG, SF 4mm (0.158 in.)
3115, 3211
3215, 3311
SG, SF, TG 4mm (0.158 in.)
TF 4.2mm (0.165 in.)
SG, SF, TG 4mm (0.158 in.)
TF 4.2mm (0.165 in.)
3315 TF 4.5mm (0.177 in.)
TABLE 4-4. Tightening Torque for Impeller and Rotor Bolts
Note: Rotor Bolts have left hand threads.
Motor Size Bolt Type Bolt Size Value of Torque
3111 Impeller M8 8
3115, 3211 Impeller M10 13
3215, 3311 Impeller M12 22
3315 Impeller M 14 34
3111, 3115 Rotor M8 8
3211, 3215 Rotor M10 13
3311, 3315 Rotor M12 34
TABLE 4-5. Tightening Torque for Pump Casing and Rear Bearing Housing Bolts
Note: Number follows M represents nominal threads OD in mm.
Motor Size Bolt Type Bolt
3111, 3115, 3211,
& 3215(SG, SF)
3215(TG, TF),
3311, & 3315
All Rear Bearing
Pump Casing M10 26
Pump Casing M12 44
Housing
(ft. lb .)
Value of Torque
Size
M10 26
(ft. lb.)
Page 14
APPENDIX
TROUBLE ANALYSIS SHEET
CUSTOMER: ____________________________________ DATE: _______________________________
ADDRESS: ____________________________________ PHONE: ______________________________
____________________________________ FAX: ________________________________
CONTACT: _____________________________________ S/N #: ______________________________
E-MAIL: _____________________________________
Proper analysis of the trouble you have been experiencing requires an accurate description
of operating conditions and the system in which the pump is installed.
DATE INSTALLED:________________ DATE REMOVED:________________ HOURS USED: _______________
1.) LIQUID OR SOLUTION HANDLED (Include impurities or % if mixture):____________________________
___________________________________________________________________________________________
IS DISSOLVED GAS PRESENT?_________________________________________________________________
ARE SOLIDS IN SUSPENSION PRESENT?_________________________________________________________
IF SO, STATE NATURE:________________________________________________________________________
2.) ACTUAL OPERATING CONDITIONS: TRANSFER CIRCULATION
FLOW: _____________________________________GPM SUCTION PRESSURE: _____________________PSIG
DISCHARGE PRESSURE: _______________________PSIG DIFFERENTIAL: ________________________PSI/FT
PUMPING TEMPERATURE: _______________________F SP. GR. @ P.T.: _________________________
VISCOSITY AT: VAPOR PRESSURE AT:
PUMPING TEMPERATURE: _____________________CPS PUMPING TEMPERATURE:___________PSIA/MMHG
AMBIENT: __________________________________CPS AMBIENT: ________________________PSIA/MMHG
3.) PLEASE SEND A SKETCH OF YOUR SYSTEM. GIVE A BRIEF DESCRIPTION, INCLUDING A ROUGH FLOW SHEET.
INDICATE WHAT CHEMICAL OR PHYSICAL ACTION OCCURS BEFORE THE PUMP. SHOW COOLING OR HEATING
SERVICES ON LINES DIRECTLY AFFECTING THE PUMP. SHOW WHAT CONTROLS ARE USED AND WHAT THEY
OPERATE. IF MORE THAN ONE PUMP OPERATES ON A COMMON SUCTION, SHOW HOW THEY ARE BALANCED.
YOUR ATTENTION TO THIS REPORT IS GREATLY APPRECIATED. UPON RECEIPT AT CHEMPUMP, WE WILL
EVALUATE THE FACTS SHOWN AND RETURN OUR RECOMMENDATIONS TO YOU.
RETURN COMPLETED FORM TO:
CHEMPUMP
FACTORY SERVICE CENTER
959 MEARNS ROAD, WARMINSTER, PA 18974
PHONE: (215) 343-6000 FAX: (267) 486-1037
Page A-1
DECONTAMINATION CERTIFICATION
AND FLUSHING PROCEDURE
CUSTOMER ______________________________________ DATE: _______________________________
ADDRESS: ____________________________________ PHONE: ______________________________
____________________________________ FAX: ________________________________
CONTACT: ____________________________________ RMA #: ______________________________
Please complete the items below. Providing this information will allow us to work as quickly and safely as possible.
PUMP MODEL: ___________________________________ SERIAL NUMBER: _______________________
PART NUMBER:___________________________________ DATE INSTALLED:_______________________
DATE PURCHASED: _______________________________ INDOOR / OUTDOOR:____________________
REASON FOR RETURN: WARRANTY REQUEST FACTORY SERVICE
FAILURE INFORMATION:
Failure To Deliver Required Capacity Vibration Motor Burnout
Loses Prime After Starting Bearing Failure Other: ______________________
Axial Wear Due To Thrust Insufficient Pressure
BRIEF DESCRIPTION OF PUMP FAILURE: ____________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
DECONTAMINATION INFORMATION
All pumps/parts must be completely decontaminated and all information in this section must be completed
prior to shipment to our factory or service center. Shipments received without this documentation will not be
accepted and will be returned to the point of shipment.
CHECK ONE OF THE FOLLOWING:
The pump has been flushed by following steps A through Both the complete pump and the stator assembly have
A3 of the Chempump Flushing Procedure on page 2 of been flushed by following steps A through B3 of the
this form. No liner rupture is suspected. Chempump Flushing Procedure on page 2 of this form.
The motor must be rewound.
FLUID PUMPED: __________________________ WHAT FLUID DID YOU FLUSH WITH: ______________
Attach completed material safety data sheets (MSDS) for these fluids. If either fluid is proprietary, please
attach a description of any characteristics that will assist Chempump in safe handling. Without detailed and complete
information on the pumped fluid, we will not be able to process your order.
PROTECTION EQUIPMENT RECOMMENDED FOR SAFE HANDLING OF THE PROCESS FLUID:
____________
_____________________________________________________________________________
DECONTAMINATION CERTIFIED BY: _____________________________ DATE:_______________________
TITLE: ______________________________________________________ PHONE: _____________________
RETURN COMPLETED FORM AND PUMP/PART TO:
CHEMPUMP
FACTORY SERVICE CENTER
959 MEARNS ROAD
WARMINSTER, PA 18974
PHONE: (215) 343-6000
FAX: (267) 486-1037
CHEMPUMP
MIDWEST SERVICE CENTER
STATE ROUTE 2
BELMONT, WV 26134
PHONE: (304) 684-2459
FAX: (304) 684-7593
Page A-2
TEXAS PROCESS EQUIPMENT
5880 BINGLE ROAD
HOUSTON, TX 77092
PHONE: (713) 460-5555
FAX: (713) 460-4807
DECONTAMINATION CERTIFICATION
AND FLUSHING PROCEDURE
FLUSHING PROCEDURES FOR CHEMPUMP PRODUCTS
THE FOLLOWING FLUSHING PROCEDURES ARE REQUIRED TO ALLOW FOR MAXIMUM REMOVAL OF PROCESS FLUIDS.
A. COMPLETE PUMP
A1 ) WITH THE SUCTION FLANGE DOWN, INTRODUCE AN APPROPRIATE NEUTRALIZING FLUID
THROUGH THE DISCHARGE FLANGE. FLUSH THE PUMP IN THIS MANNER FOR A SUFFICIENT
TIME TO ALLOW FOR THE REMOVAL OF ALL PROCESS FLUID.
A2) AGAIN, WITH THE SUCTION FLANGE DOWN, REMOVE THE CIRCULATION LINE (AND FITTING IF
NECESSARY) AND INTRODUCE AN APPROPRIATE NEUTRALIZING FLUID TO THE REAR OF THE
PUMP. FLUSH THE PUMP IN THIS MANNER FOR A SUFFICIENT TIME TO ALLOW FOR THE
REMOVAL OF ALL PROCESS FLUID. ALSO FLUSH THE CIRCULATION LINE AND/OR HEAT
EXCHANGER TUBING, AS REQUIRED.
A3) AFTER FLUSHING AS SPECIFIED ABOVE, REMOVE AS MUCH OF THE NEUTRALIZING FLUID AS
POSSIBLE USING COMPRESSED AIR OR INERT GAS.
B. G and J-SERIES STATOR ASSEMBLY (if equipped with a relief valve ): IF A STATOR LINER RUPTURE IS
SUSPECTED, FOLLOW THIS SECTION TO FLUSH THE STATOR CAVITY. CAUTION: IF THIS STEP IS
FOLLOWED, THE MOTOR MUST BE REWOUND.
B1) REMOVE THE RELIEF VALVE. INSERT A SCREWDRIVER INTO THE RELIEF VALVE ADAPTER
AND PRY THE LISK FILTER TO ONE SIDE. REMOVE THE CONNECTION BOX FROM THE LEAD
NIPPLE AND CHIP AWAY THE POTTING COMPOUND FROM THE LEAD NIPPLE.
B2) POSITION THE STATOR ASSEMBLY WITH THE LEAD NIPPLE DOWN AND INTRODUCE AN
APPROPRIATE NEUTRALIZING FLUID TO THE RELIEF VALVE ADAPTER. THE FLUID WILL EXIT
THROUGH THE LEAD NIPPLE. FLUSH THE STATOR CAVITY IN THIS MANNER FOR A SUFFICIENT TIME TO ALLOW FOR THE REMOVAL OF ALL PROCESS FLUID AND STATOR OIL.
B3) REMOVE AS MUCH OF THE NEUTRALIZING FLUID AS POSSIBLE BY PURGING THE STATOR
CAVITY WITH COMPRESSED AIR OR INERT GAS FOR 3 - 5 MINUTES.
C. NC and LE-SERIES STATOR ASSEMBLY (no relief valve): IF A STATOR LINER RUPTURE IS
SUSPECTED, FOLLOW THIS SECTION TO FLUSH THE STATOR CAVITY. CAUTION: IF THIS STEP IS
FOLLOWED, THE MOTOR MUST BE REWOUND.
C1) DRILL A HOLE THROUGH BASE CRADLE MOUNTING HOLE LOCATED IN REAR END BELL, DRILL
THIS HOLE JUST DEEP ENOUGH TO BREAK THROUGH END BELL. DRILL A SECOND HOLE
THROUGH STATOR LINER ON OPPOSITE END OF STATOR.
C2) POSITION THE STATOR ASSEMBLY WITH REAR END BELL UP AND INTRODUCE AN APPROPRI-
ATE NEUTRALIZING FLUID THROUGH DRILLED HOLE IN REAR END BELL. THE FLUID WILL EXIT
THROUGH THE DRILLED HOLE ON OPPOSITE SIDE. FLUSH THE STATOR CAVITY FOR A
SUFFICIENT TIME TO ALLOW FOR THE REMOVAL OF ALL PROCESS FLUID.
C3) REMOVE AS MUCH OF THE NEUTRALIZING FLUID AS POSSIBLE BY PURGING THE STATOR
CAVITY WITH COMPRESSED AIR OR INERT GAS FOR 3 - 5 MINUTES.
Page A-3
A-4
A-5
A-6
A-7
Teikoku USA: 7010 Empire Central Drive, Houston, TX 77040-3214 Phone: (713) 983-9901 Fax: (713) 983-9919 Website: www.teikoku-usa.com E-mail: info@teikoku-usa.com
Chempump: 959 Mearns Road, Warminster, PA 18974 Phone: (215) 343-6000 Fax: (267) 486-1037 Website: www.chempump.com E-mail: chempump@chempump.com
Midwest Service Center: State Route 2 North, Belmont, WV 26134 Phone: (304) 684-2459 Fax: (304) 684-7593
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