FTI DB6 Series User manual
DB6, 6H, 7, 8, 9, 10 Series
Centrifugal Pumps
Assembly, Installation and
Operation Manual
EU Declaration of Conformity
Finish Thompson Inc. hereby declares that the following machine(s) fully comply with the
applicable health and safety requirements as specied by the EC Directives listed. The product
may not be taken into service until it has been established that the drive motor for the centrifugal
pump complies with the provisions of all relevant EC Directives. The complete product complies
with the provisions of the EC Directive on machinery safety provided motors carry CE marking.
This declaration is valid provided that the devices are fully assembled and no modications are
made to these devices.
Type of Device:
Centrifugal Pumps
Models:
AC/AK/AV - 400/500/600/800 DB-3/4/5/5.5/6/6H/7/ GP-11/22/32
8/9/10/11/15/22
KC-3/4/5/5.5/6/6H/8/10/11/22/32 MSKC MSVKC
SP-10/11/15 UC-1516/1518/326 VKC-5.5/6/6H/7/8/10
EC Directives:
Machinery Safety (2006/42/EC)
Applied Harmonized Standards:
EN ISO 12100 Part 1
EN ISO 12100 Part 2
EN 809
Manufacturer:
Finish Thompson Inc.
921 Greengarden Road
Erie, Pennsylvania 16501-1591 U.S.A
Signed,
President
April 19, 2010
Person(s) Authorized to Compile Technical File: Michael Smith Engineers Limited
Oaks Road, Woking, Surrey
GU21 6PH, UK
Telephone: 01483 771871
Table of Contents
Important Information - Read Me First
Model Number/Serial Number.................................................................................................. 1
Important Notice ........................................................................................................................ 1
Chemical Reaction Disclaimer .................................................................................................. 1
Safety Precautions ...................................................................................................................... 1
Installation/Operation Precautions........................................................................................... 2
Safety Precautions forATEX Pumps........................................................................................ 2
Temperature Classication........................................................................................................ 2
DB6 - 10 Capabilities.................................................................................................................. 2
Minimum Flow Rate................................................................................................................... 2
Maximum Motor Power............................................................................................................. 2
Unpacking and Inspection............................................................................................................... 3
Section I - Assembly.......................................................................................................................... 3
Pumps with Motors..................................................................................................................... 3
Pumps without Motors................................................................................................................ 3
Section II - Installation
Mounting...................................................................................................................................... 4
Piping............................................................................................................................................ 4
Motor/Electrical........................................................................................................................... 4
Section III - Start-up and Operation............................................................................................... 4
Shutdown...................................................................................................................................... 4
Flush Systems............................................................................................................................... 5
Optional Drain Installation......................................................................................................... 5
Section IV - Maintenance
Recommended Maintenance schedule........................................................................................ 5
Section V - Disassembly.................................................................................................................... 5
Outer Drive Replacement............................................................................................................ 6
Thrust Ring Replacement............................................................................................................ 6
Bushing Replacement................................................................................................................... 6
Section VI - Reassembly...................................................................................................................6-7
Section VII - Troubleshooting......................................................................................................... 7
Section VIII - Warranty .................................................................................................................. 7
Part Number Explanation............................................................................................................... 8
Spare Parts Diagram ....................................................................................................................... 9
Spare Parts List................................................................................................................................ 10-12
ImpellerAssemblies ......................................................................................................................... 13
FTI Contacts:
Tech Service: 800-888-3743 or techservice@nishthompson.com
Order Fax: 814-459-3460 or 814-455-8518
Sales: 814-455-4478; 800-934-9384 (U.S. & Canada)
NOTE: Maintenance videos are now available on-line
at www.nishthompson.com.
Model Number and Serial Number
Record the model number and serial number below for future reference. This is important information when ordering replacement parts or when
technical assistance is required. The numbers are found on a label located on the motor adapter.
MODEL NUMBER = ____________________________
SERIAL NUMBER = ________________________
Chemical Reaction Disclaimer
The user must exercise primary responsibility in selecting the product’s materials of construction, which are compatible with the fluid(s) that
come(s) in contact with the product. The user may consult Finish Thompson, Inc. (manufacturer) and a manufacturer’s representative/distributor
agent to seek a recommendation of the product’s material of construction that offers the optimum available chemical compatibility.
However neither manufacturer nor agent shall be liable for product damage or failure, injuries, or any other damage or loss arising out of a reac-
tion, interaction or any chemical effect that occurs between the materials of the product’s construction and fluids that come into contact with the
product’s components.
Safety Precautions
WARNING: Magnetic field hazard: This pump contains powerful magnets. Exposed magnets (pump not connected to motor) produce power-
ful magnetic fields. Individuals with cardiac pacemakers, implanted defibrillators, other electronic medical devices, metallic prosthetic heart
valves, internal wound clips (from surgery), metallic prosthetic devices or sickle cell anemia must not handle or be in the proximity of the magnets
contained inside the pump. Consult a health care provider for specific recommendations before working with this pump.
WARNING: Magnetic force hazard. This pump should only be disassembled and assembled using the recommended procedures. The mag-
netic attraction is powerful enough to rapidly pull the motor end and the wet end together. Do not place fingers between the mating surfaces of
the motor and wet ends to avoid injuries. Keep the drive magnet and impeller assembly away from metal chips or particles, items with magnetic
stripes like credit cards and magnetic computer media such as floppy discs and hard drives.
WARNING: When pumping flammable or combustible liquids with a DB Series pump it is important to follow these guidelines:
1. You must use a PVDF pump. PVDF has conductive carbon fibers added which allow it to be grounded when installed in a properly grounded
piping system or when a properly installed grounding strap is attached to a housing bolt. If PVDF is not compatible with the liquid being
pumped, you should consider an ETFE lined UC Series magnetic drive pump.
2. You must select the non-sparking (Ns) bronze bump ring option. The non-sparking ring is pressed into the clamp ring or motor adapter and
prevents sparking should the motor bearings fail and the outer mag drive assembly runs out of round.
3. You must select an explosion-proof FTI motor or provide your own explosion-proof motor.
When pumping non-flammable or non-combustible liquids in a hazardous area using a DB Series pump, it is important to take these guidelines:
1. You must select the non-sparking (Ns) bronze bump ring option. The non-sparking ring is pressed into the clamp ring or motor adapter and
prevents sparking should the motor bearings fail and the outer mag drive assembly runs out of round.
2. You must select an explosion-proof FTI motor or provide your own explosion-proof motor.
WARNING: Hot surfaces. This pump is capable of handling liquids with temperatures as high as 220º F (104º C). This may cause the outer
areas of the pump to become hot as well and could cause burns.
WARNING: Rotating Parts. This pump has components that rotate while in operation. Follow local safety standards for locking out the motor
from the power supply during maintenance or service.
WARNING: Chemical Hazard. This pump is used for transferring many types of potentially dangerous chemicals. Always wear protective
clothing, eye protection and follow standard safety procedures when handling corrosive or personally harmful materials. Proper procedures should
be followed for draining and decontaminating the pump before disassembly and inspection of the pump. There may be small quantities of chemi-
cals present during inspection.
IMPORTANT INFORMATION - READ ME FIRST!
1
IMPORTANT NOTICE
U.S. Export Administration Regulations, pursuant to ECCN 2B350, prohibit the export or reexport to certain enumerated countries of
sealless centrifugal pumps in which all wetted materials are constructed from fluoropolymers without first applying for and obtaining
a license from the U.S. Bureau of Industry and Security (BIS). This affects all Finish Thompson magnetic-drive pumps constructed from
PVDF or lined with ETFE. Please contact the BIS (www.bis.doc.gov) or Finish Thompson with questions regarding the Regulations or a
list of the countries to which they apply.
WARNING: READ THIS MANUALCOMPLETELY BEFORE INSTALLING AND OPERATING THIS UNIT. FAIL-
URE TO FOLLOW THESE PRECAUTIONS CAN RESULT IN SERIOUS INJURY OR DEATH.
WARNING: The pump and associated components are heavy. Failure to properly support the pump during lifting and movement could result
in serious injury or damage to the pump and components.
WARNING: Never run pump at less than minimum flow or with the discharge valve closed. This could lead to pump failure.
Installation/Operation Precautions
CAUTION: This pump should never be operated without liquid in the casing. It is recommended that run dry protection be used. Optional
electronic power monitors are available to help protect against run dry. If the pump has a PTFE, ceramic or silicon carbide bushing, IT CANNOT BE
RUN DRY WITHOUT CAUSING DAMAGE TO THE PUMP. However, the pump can operate without liquid in the casing if the pump has a carbon bush-
ing. The exact length of time the pump can operate dry with a carbon bushing varies with operating conditions and the environment.
CAUTION: Never start or operate with a closed suction valve. Never operate with a closed discharge valve.
CAUTION: Always provide adequate NPSHa (net positive suction head available). It is recommended to provide at least 2 feet (61 cm) above
the NPSHr (net positive suction head required).
CAUTION: If pump is used on variable speed drive, do not exceed the frequency for which the pump was designed (for example, if the pump
is a 50 Hz model, do not exceed 50 Hz).
Safety Precautions for ATEX Pumps
CAUTION: Proper o-ring material must be chosen for the fluid being pumped. Improper material selection could lead to swelling and be a
possible source of leaks. This is the responsibility of the end user.
WARNING: The pump must be checked for leaks on a regular basis. If leaks are noticed, the pump must be repaired or replaced immediately.
WARNING: The pump must be cleaned on a regular basis to avoid dust buildup greater than 5 mm.
WARNING: ATEX pumps must use a power monitor, flow switch, pressure switch or similar device to help protect against running dry, closed
discharge valve and decoupling. Any of these conditions could lead to a rise in surface temperature of the pump.
Temperature Classification
Fluid Temperature Maximum Surface
Temperature
Temperature Class Maximum Allowable
Surface Temperature
90º F (32º C) 125º F (52º C) T6 85º C
180º F (82º C) 174 º F (81º C) T4 135º C
220º F (104º C) 200º F (93º C) T4 135º C
DB6, 6H, 7, 8, 9,10 Capabilities
• Maximum Working Pressure: 80 psi (5.5 bar)
• Maximum Viscosity: 150 cP
• Maximum Temperature: Polypropylene -180º F (82º C); PVDF – 220º F (104º C)
Note: Maximum temperature is application dependent. Consult a chemical resistance guide or the chemical manufacturer for chemical
compatibility and temperature limits.
• Solids: Maximum particle size is 100 microns for slurries and 1/64” (.4 mm) for infrequent particles. Maximum hardness is 80 HS. Maximum
concentration is 10% by weight. If solids are being pumped, it is recommended that the pump have either ceramic or for best results, silicon
carbide components. Pumping solids may lead to increased wear.
Minimum Allowable Flow Rate
Do not allow the flow rate to drop below the minimum flow rate listed in the chart below.
3450 rpm 1725 rpm 2900 rpm 1450 rpm
1/2 gpm (1.9 lpm) 1/4 gpm (.95 lpm) 1.9 lpm (1/2 gpm) .95 lpm (1/4 gpm)
Maximum Allowable Motor Power
Do not exceed the maximum power rating for the pump coupling. Standard coupling for the DB6, 6H & 7 is 6-pole; standard coupling for the
DB8, 9 & 10 is 8-pole.
· 6-pole coupling = 1/2 horsepower (0.37 kW)
· 8-pole coupling = 1 horsepower (0.75 kW)
· 10-pole coupling = 2 horsepower (1.50 kW)
2
Maximum Noise Level
69 dBA (Pump only)
6. Secure the drive on the motor shaft.
WARNING: Be careful, magnets will
try to attract tools.
Metric Motors: Secure the drive to the
motor shaft using bolt, lock washer and
flat washer (items 21, 22, 23). Thread the
bolt into the end of the motor shaft (while
holding the outer drive to prevent it from
turning). See figure 6.
Tighten the bolt to the following:
· 63 frame (M4) = 15 in-lb (1.7 N-m)
· 71 frame (M5) = 30 in-lb (3.4 N-m)
· 80 frame (M6) = 90 in-lb (10.2 N-m)
· 90 frame (M8) = 130 in-lb (14.7 N-m)
NEMA Motors: Install set screws (item 13B)
into threaded holes on the side of the outer
drive magnet assembly. Using a 3/16” Allen
wrench, tighten to 228 in-lbs (25.8 N-m).
See figure 7.
7. Install the pump end on the motor/drive
magnet assembly. With the motor/outer
drive magnet assembly in a horizontal posi-
tion,securely clamp to the workbench.
Note: If the pump has the optional o-ring sealing option (available
on 56C and 145 frame pumps only), install the o-ring (item 12) in
the groove in the motor adapter (motor end).
Carefully slide the pump onto the drive magnet assembly. The
last couple of inches (5 cm) before the pump reaches the motor
will have STRONG magnetic attraction between the pump and
outer drive magnet assembly. See figure 8.
8. Secure the pump to the motor with (4) 3/8” bolts, lock washers
and flat washers (items 24, 25, 26). Tighten to 60 in-lb (6.8 N-m).
See figure 9.
Note: 63/71 frame require 3/8-16 hex jam nuts. Place nut in
and secure pump to motor.
Note: Apply anti-sieze compound on the threads of the bolts.
Tools Required:
Metric socket or wrench set, 9/16” socket or wrench and 3/16” Allen
Wrench (NEMA motors only)
1. Remove the pump, drive magnet assembly and hardware package
from the carton.
CAUTION: Keep away from metallic particles, tools and elec-
tronics. Drive magnets MUST be free of metal chips.
WARNING: Keep the drive magnet away from the open end of
the motor adapter and barrier. Strong magnetic attraction
could allow the drive hub to enter the motor adapter resulting
in injury or damage.
2. Place motor on the fan end. See figure 1.
NOTE: For 56C/145TC frame motors go to
step 4.
3. Install the motor adapter flange (item 14)
on motor face using bolts, lock washers
and flat washers (items 27, 28, 29). See
figure 2.
Torque bolts to the following:
· 63 frame (M5) = 30 in-lb (3.4 N-m)
· 71 frame (M6) = 90 in-lb (10.2 N-m)
· 80 frame (M6) = 90 in-lb (10.2 N-m)
NOTE: 63/71 B14 adapter flange is revers-
ible. Install 63/71 B14 adapter so that
proper motor flange size is facing motor.
NOTE: Apply anti-seize compound on the
threads of the bolts.
4. Coat the motor shaft with anti-seize com-
pound. Insert key supplied with motor into
keyway on motor shaft. See figure 3.
NOTE: Make sure the motor shaft is clean
and free of burrs. The outer drive is preci-
sion machined and has a bore tolerance of +.0005/-0 inch.
5. Slide the outer drive magnet assembly (item 13) onto the motor
shaft until the motor shaft contacts the snap ring in the bore of the
drive. See figures 4 & 5.
Figure 1
Unpacking and Inspection
Unpack the pump and examine for any signs of shipping damage. If
any damage is detected, save the packaging and notify the carrier
immediately.
Section I - Assembly
Pumps with Motors
Proceed to Installation Section
PumpsWithout Motors
Figure 2
Figure 3
Figure 4 Figure 5 3
Figure 6
Figure 7
Figure 8 Figure 9
9. Rotate the motor fan to ensure that there is no binding in the
pump.
10. Proceed to Installation Section.
Section II – Installation
Mounting
Motor feet should be securely fastened to a solid foundation.
Note: Shims are required for the motor feet on ALL 63, 71 and 80
frame motors and 90 frame B5 motors.
Instructions for horizontal discharge installation:
The pump ships from the factory with the discharge in a vertical orien-
tation. These instructions allow a horizontal discharge.
1. Remove (4) clamp ring bolts, lock washers and flat washers (items
20, 19, 18). Rotate clamp ring clockwise 90º from the motor end.
2. Reinstall (4) clamp ring bolts, lock washers and flat washers.
Tighten to 60 in-lb (6.8 N-m).
Note: If the pump has the optional o-ring sealing option (avail-
able on 56C and 145 frame pumps only), make sure o-ring is
properly seated in the groove after the clamp has been rotated.
Note: When the pump discharge is in a horizontal configuration,
the motor must be shimmed to raise the front of the pump to
avoid interference.
Piping
Caution: The NPSH available must be greater than the NPSH
required. Filters, strainers and any other fittings in the suction line will
lower the NPSH available and should be calculated into the application.
· Install the pump as close to the suction source as possible.
· Support the piping independently near the pump to eliminate any
strain on the pump casing. In addition, the piping should be aligned
to avoid placing stress on the pump casing.
· The suction side of the pump should be as straight and short as
possible to minimize pipe friction.
· Keep bends and valves at least ten pipe diameters away from the
suction and discharge.
· The suction line should be at least as large as the suction inlet port
or one pipe size larger so that it does not affect the NPSHa. Do not
reduce the suction line size.
· The suction line should not have any high spots. This can create air
pockets. The suction piping should be level or slope slightly upward
to the pump.
· A check valve and control valve (if used) should be installed on the
discharge line. The control valve is used for regulating flow. An
isolation valves on the suction and discharge are used to make the
pump accessible for maintenance. The check valve helps prevent
the pump against damage from water hammer. This is particularly
important when the static discharge head is high.
· If flexible hose is preferred, use a reinforced hose rated for the
proper temperature, pressure and chemical resistance to the fluid
being pumped.
· The suction valve must be completely open to avoid restricting the
suction flow.
· It is advisable to install a flush system in the piping to allow the
pump to be flushed before the pump is removed from service.
Note: The pump is provided with a provision for a customer
installed ¼” drain in the impeller housing. See the Drain Installation
Section for details.
· For units in a suction lift system, install appropriate piping in the
discharge to allow priming of the pump (DB models are not self-
priming).
· When installing pumps with flanges, we recommend the use of low
seating stress gaskets such as Gore-Tex® or Gylon® (expanded
PTFE)
Motor/Electrical
Install the motor according to NEC requirements and local electrical
codes. The motor should have an overload protection circuit.
Wire the motor for clockwise rotation when facing the fan end of the
motor.
CAUTION: Do not operate the pump to check rotation until the
pump is full of liquid.
Check all electrical connections with the wiring diagram on the motor.
Make sure the voltage, frequency, phase and amp draw comply with
the supply circuit.
If utilized, verify that the power monitor has been properly installed
according to the manufacturers instructions.
To verify correct rotation of the motor:
1. Install the pump into the system.
2. Fully open the suction and discharge valves.
3. Allow fluid to flow into the pump. Do not allow the pump to run
dry (ceramic, PTFE and silicon carbide bushings can’t be run dry
without damage to pump components).
4. Jog the motor (allow it to run for 1-2 seconds) and observe the
rotation of the motor fan. Refer to the directional arrow molded
into the pump casing if necessary.
Note: A pump running backwards will pump but at a greatly
reduced flow and pressure.
Section III - Start-up and Operation
1. This pump must be filled from a flooded suction tank (gravity) or
primed with liquid from an outside source. DB Series pumps are
not self-priming.
2. Open the inlet (suction) and discharge valves completely and al-
low the pump to fill with liquid.
3. Close the discharge valve.
4. Turn the pump on. Slowly open the discharge valve. Adjust the
flow rate and pressure by regulating the discharge valve. Do not
attempt to adjust the flow with the suction valve.
5.
Use of a power monitor is strongly recommended for pumps with
ceramic, PTFE or silicon carbide bushings. The power monitor will
stop the pump and help prevent damage if the pump should run dry.
Shutdown
Use the following procedure to shutdown the pump.
1. Slowly close the discharge valve.
2. Turn off the motor.
3. Close the suction valve.
4
Flush Systems
CAUTION: Some fluids react with water; use compatible flushing
fluid.
1. Turn off the pump.
2. Completely close the suction and discharge valves
3. Connect flushing fluid supply to flush inlet valve.
4. Connect flushing fluid drain to flush drain valve.
5. Open flushing inlet and outlet valves. Flush system until the pump
is clean.
Optional Drain Installation
1. Remove the impeller housing (item 1) from the pump assembly.
2. Clamp the impeller housing to a drill press table.
3. Using a 7/16” drill and the molded boss as a guide, drill com-
pletely through the molded boss into the interior of the impeller
housing.
CAUTION: Do not tap too deep or the impeller housing may be
damaged.
4. Using a ¼” NPT tap, tap the hole in the molded boss to the ap-
propriate depth.
5. Install the drain plug or valve, being careful not to over-tighten.
Section IV - Maintenance
Recommended maintenance schedule
The recommended maintenance schedule depends upon the nature
of the fluid being pumped and the specific application. If the pump is
used on a clean fluid, it is recommended that the pump be removed
from service and examined after six months of operation or after 2,000
hours of operation. If the pump is used on fluids with solids, high tem-
peratures or other items that could cause accelerated wear, then this
initial examination should be sooner.
After the initial examination of the internal components and wear items
are measured, a specific maintenance schedule can be determined.
For best results, it is recommended that the pump be removed from
service annually for examination.
Section V - Disassembly
WARNING: Rotating Parts. This pump has components that rotate
while in operation. Follow local safety standards for locking out the
motor from the power supply during maintenance or service.
WARNING: Chemical Hazard. This pump is used for transferring
many types of potentially dangerous chemicals. Always wear protective
clothing, eye protection and follow standard safety procedures when
handling corrosive or personally harmful materials. Proper procedures
should be followed for draining and decontaminating the pump before
disassembly and inspection of the pump. There may be small quanti-
ties of chemicals present during inspection.
WARNING: Magnetic force hazard. This pump should only be dis-
assembled and assembled using the recommended procedures. The
magnetic attraction is powerful enough to rapidly pull the motor end
and the wet end together. Do not place fingers between the mating
surfaces of the motor and wet ends to avoid injuries. Keep the drive
magnet and impeller assembly away from metal chips or particles.
1. Stop the pump, lock out the motor starter, close all the valves that
are connected to the pump, and drain/decontaminate the pump.
WARNING: The pump must be thoroughly flushed of any haz-
ardous materials and all internal pressure relieved prior to opening
the pump. Allow the pump to reach ambient temperatures prior to
performing maintenance.
2. Securely clamp the motor to the bench. Remove the (4) bolts, lock
washers and flat washers (items 24, 25, 26) securing the pump to
the motor.
3. Firmly grab the pump and pull straight
back to disengage the motor and the
pump. See figure 10.
4. Place pump on bench with housing
facing up. Remove (6) 8 mm hous -
ing bolts, lock washers and flat
washers (items 15, 16, 17). See
figure 11.
5. Pull housing (item 1) straight up to
remove. Inspect housing for signs of
wear or damage. Look for signs of
rubbing, cracked thrust ring or dam-
age to front shaft support. See
figure 12.
6. Remove impeller/inner drive assembly
(items 4A, 4, 5, 5A). Inspect impeller
and drive for signs of wear or damage.
Look for signs of rubbing, damage and
wear to the impeller and inner drive.
See figure 13.
Check the impeller thrust ring and
bushing for wear. See figure 14.
5
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
7. Remove the impeller shaft (item 6)
from the barrier and check for signs
of cracking, chipping, scoring or
wear. See figure 15.
8. Remove the barrier (item 7) from the
motor adapter (item 11) (make sure
the shaft has been removed).
If necessary, gently tap on the back
side of the barrier with a soft rod
(wood, plastic, etc). Inspect the inside
and outside of the barrier for signs of
rubbing. See figure 16.
9. Remove the o-ring (item 3) from the
barrier and inspect for chemical at
tack, swelling, brittleness, cuts, etc.
10. Visually inspect the outer drive (item 13) for rubbing, damage, cor-
rosion or loose magnets.
Outer Drive Replacement
1. Remove the setscrews (item 13B) from the side of the drive
(NEMA motors) or the bolt, lock washer and flat washer (items 21,
22, 23) from the center of the drive (metric motors).
WARNING: Be careful, tools will want
to be attracted to the magnets.
2. Remove the drive magnet from the
motor shaft by gently prying up from
the bottom of the drive. See
figure 17.
3. To reinstall the drive or a new drive
follow the instructions from Section I - Assembly, Pumps without
Motors, steps 5 & 6.
Thrust Ring Replacement
1. Thrust ring (item 4A) is held in-place with
a snap fit with a ridge. Using a razor knife
or side cutters, cut a notch out of the
thrust ring. Pull ring up and out of the
holder. See figures 18 and 19.
2. To reinstall, align the two flats on the
thrust ring with the flats in the bore of the
impeller. Using a piece of wood press
into place using an arbor press until the
thrust ring is completely seated in the
impeller.
Bushing Replacement
To remove the bushing, place the impeller/in-
ner drive assembly in an arbor press. Insert a
7/16” diameter plastic or wood shaft through
the eye of the impeller and press the bushing
out.
To replace the bushing (item 5A), place the top of the impeller on an
arbor press with the thrust ring face down. Insert the front of the bush-
ing into the center of the impeller/inner drive magnet assembly. Press
into place until the bushing reaches the shoulder molded into the inner
drive. See figures 20, 21, 22.
Figure 16
Figure 15
Figure 17
6
Figure 18
Figure 19
Figure 20 Figure 21 Figure 22
Impeller Replacement
To remove the impeller from the inner drive magnet, gently pry off by
hand or lightly tap on the back of the impeller.
To install a new impeller, place the inner drive magnet assembly face
up. Line up the patterns on the impeller
with the ones on the inner drive magnet
so they match and press into place by
hand. An arbor press can also be used
to press the impeller on the inner drive.
Place a piece of wood over the top of the
impeller thrust ring and push down on the
impeller until it is completely seated in
the inner drive. See figure 23.
Figure 23
Section VI - Reassembly
1. Place motor adapter (item 11) so the large flange is on the bench.
Rotate the adapter so the four holes in the smaller flange are in
the horizontal position. Install o-ring (item 10) in the groove. See
figure 24.
2. Install clamp ring.
For vertical discharge – Install the clamp ring (item 9) in the motor
adapter so the housing bolt holes (6 holes in clamp ring) are in
3:00 and 9:00 position. See figure 25.
For horizontal discharge - Install the clamp ring (item 9) in the
motor adapter so two housing bolt holes (6 holes in clamp ring)
are in 12:00 and 6:00 position. See figure 26.
Figure 24 Figure 25 Figure 26
3. Install (4) bolts, lock washers and flat washers (items 20, 19, 18).
Tighten evenly using a star pattern. Tighten to 60 in-lb (6.8 N-m).
See figure 27.
4. Install barrier (item 7) into motor adapter
and clamp ring assembly. Lubricate the
o-ring with a chemically compatible lubri-
cant, and install it in the groove in the
clamp ring before installing the barrier. See
figure 27A. Push barrier into place. See
figure 27B.
Figure 27
Figure 27A Figure 27B
7
5. Install o-ring (item 3) in groove in the
barrier.
6. Install impeller shaft (item 6) into
barrier by aligning the flats on the
shaft with the flats in the barrier.
Make sure it is completely seated.
See figure 28.
7. Carefully install the impeller/inner drive
assembly (items 4A, 4, 5, 5A) by sliding
it over the impeller shaft in the barrier. It
is normal for the impeller/inner drive to
pop up a slight amount due to magnetic
forces. See figures 29 and 30.
8. Establish the bottom of the motor
adapter/clamp ring assembly. See
figures 25 and 26.
9. Install the impeller housing making
sure that the discharge is in correct orien-
tation (vertical or horizontal). Align the
shaft in the barrier with the front shaft
support in the impeller housing. Pressing
down, push the impeller/inner drive
magnet assembly into position. Holding
the impeller housing with one hand, install
and finger-tighten two bolts, lock washers
and flat washers (items 15, 16, 17) in
opposite locations. See figure 31.
10. Install the remaining bolts, lock washers
and flat washers finger tight.
11. Tighten all the bolts evenly using a star
pattern. Tighten to 60 inch-lbs (6.8 N-m).
12. Reinstall the pump on the motor/drive magnet following instruc-
tions found in “Assembly, Pumps without motors,” steps 7-10.
Figure 28
Figure 29
Figure 30
Figure 31
Section VII - Troubleshooting
General Notes:
• Do not pump liquids containing ferrous metal fines.
• If magnets decouple, stop pump immediately. Operating the pump
with the magnets decoupled will eventually weaken the magnets.
• Do not use mismatched drive magnet assemblies (different num-
ber of magnets on inner and outer drive magnet assemblies).
• Contact our Technical Service Department at 1-800-888-3743 or
by e-mail at techservice@finishthompson.com if you have any
questions regarding product operation or repair.
No or Insufficient Discharge
• Air leaks in suction piping
• Pump not primed
• System head higher than anticipated
• Closed valve
• Viscosity or specific gravity too high
• Motor too large for magnet coupling rating (magnets uncoupled)
• Suction lift too high or insufficient NPSH
• Clogged suction line or impeller vanes
• Motor rotation incorrect (correct rotation when viewed from the
fan end is clockwise)
Insufficient Pressure
• Air or gas in liquid
• Impeller diameter too small
• System head lower than anticipated
• Motors speed insufficient (too low) or motor rotation incorrect (cor-
rect rotation when viewed from the fan end is clockwise)
Loss of Prime
• Leak in suction piping
• Foot valve or suction opening not submerged enough
• Foot valve too small or leaking
• Air or gas in liquid
• Foreign matter in impeller
• Leaking valve. Suction lift too high or insufficient NPSHa.
Excessive Power Consumption
• Head lower than rating
• Excessive flow
• Specific gravity or viscosity too high.
Vibration/Noise
• Loose magnet
• Drive magnet rubbing
• Pump cavitating from improper suction or feed
• Motor or piping not properly secured
• Foreign object in impeller
Section VIII - Warranty
Finish Thompson, Inc (manufacturer) warrants this pump product to be
free of defects in materials and workmanship for a period of five years
from date of purchase by original purchaser. If a warranted defect,
which is determined by manufacturer’s inspection, occurs within this
period, it will be repaired or replaced at the manufacturer’s option, pro-
vided (1) the product is submitted with proof of purchase date and (2)
transportation charges are prepaid to the manufacturer. Liability under
this warranty is expressly limited to repairing or replacing the product
or parts thereof and is in lieu of any other warranties, either expressed
or implied. This warranty does not apply to normal wear of the product
or components. This warranty does not apply to products or parts
broken due to, in whole or in part, accident, overload, abuse, chemical
attack, tampering, or alteration. The warranty does not apply to any
other equipment used or purchased in combination with this product.
The manufacturer accepts no responsibility for product damage or
personal injuries sustained when the product is modified in any way. If
this warranty does not apply, the purchaser shall bear all cost for labor,
material and transportation.
Manufacturer shall not be liable for incidental or consequential dam-
ages including, but not limited to, process down time, transportation
costs, costs associated with replacement or substitution products, la-
bor costs, product installation or removal costs, or loss of profit. In any
and all events, manufacturer’s liability shall not exceed the purchase
price of the product and/or accessories.
Ordering Spare Parts
Spare parts can be ordered from your local distributor. Always refer to
the pump model to avoid error.
Other FTI Products
See our full product range at www.finishthompson.com.
8
PART NUMBER EXPLANATION
1. Select base model (E.G. DB10P*)
2. If standard components are not suitable,
enter symbol(s) of alternative components
in any order.
Base Model - -__-__-_______
DB10P E-Ff-14
DB10P-E-Ff-14 is a DB10P with EPDM O-ring,
fiberglass flanges and 145TC motor.
3. Alternative components - select from chart.
*The model number is on the serial number label
located on the motor adapter. The model num-
ber contains a base model that features certain
standard components. Compare the model num-
ber on the pump to the chart below to determine
if the pump contains any alternate components.
Model numbers containing “P” have primary
components molded from polypropylene. Model
numbers containing “V” have primary compo-
nents molded from PVDF.
Base model numbers are: DB6P, DB6V, DB6HP,
DB6HV, DB7P, DB7V, DB8P, DB8V, DB9P, DB9V,
DB10P, DB10V.
BASE MODEL
COMPONENTS ALTERNATIVE COMPONENTS Code
Bushing Graphite Carbon PTFE T
Alumina Ceramic* R
O-Ring FKM
EPDM E
Simriz* S
Kalrez* K
Connection NPT
BSP Threads B
Union* U
Steel enforced flange* Fs
Fiberglass enforced flange* Ff
Impeller 1
(Max size 60 Hz)
Select impeller from page #
2345678910
Magnet
DB6/6H/7: 6-Pole
DB8/9/10: 8-Pole
(Upgrade for specific
gravity corrections)
6-Pole: up to .5 HP/.38 kW (56C, 63, 71 frame) 6p
8-Pole: up to 1 HP/.75 kW (56C, 145, 63, 71, 80 frame)* 8p
10-Pole: up to 2 HP/1.5 kW (56C,145, 63, 71, 80, 90
frame)* 10p
Motor
Adapter 56C NEMA
145TC NEMA 14
IEC 63/B14 64
IEC 71/B14 74
IEC 80/B14 84
IEC 90/B14 94
IEC 63/B5 65
IEC 71/B5 75
IEC 80/B5 85
IEC 90/B5 95
Specials
SS hardware, PTFE/
ceramic thrust rings,
ceramic shaft, Buna
o-ring vapor protec-
tion kit option (NEMA
only)
SiC bushing, thrust ring, shaft* Si
Hastelloy shaft* Hs
Titanium hardware* Ti
FKM o-ring vapor protection kit (NEMA only)* Vv
EPDM o-ring vapor protection kit (NEMA only)* Ve
ATEX (PVDF only)* A
Non-sparking ring* Ns
Motor Not Standard Select Motor Reference Number from Motor Price Sheets
9
DB 6 - 10 SPARE PARTS DIAGRAM
DB 6 - 10 SPARE PARTS LIST
10
Item Qty Description
DB6/6H/9 DB8 DB7/10
Pump Material Pump Material Pump Material
Polypro PVDF Polypro PVDF Polypro PVDF
1 1
Housing w/ Ring
NPT threads & standard ceramic ring 106265 106265-1 106337 106337-1 106252 106252-1
BSP threads & standard ceramic ring 106265-2 106265-3 106337-2 106337-3 106252-2 106252-3
FRP flanges & standard ceramic ring 106369 106369-1 106384 106384-1 106365 106365-1
Steel flanges & standard ceramic ring 106369-2 106369-3 106384-2 106384-3 106365-2 106365-3
Unions & standard ceramic ring 106377 106377-1 106382 106382-1 106367 106367-1
NPT Threads & optional SiC Ring 106346 106346-1 106381 106381-1 106345 106345-1
BSP Threads & optional SiC Ring 106346-2 106346-3 106381-2 106381-3 106345-2 106345-3
FRP Flanges & optional SiC Ring 106370 106370-1 106385 106385-1 106366 106366-1
Steel Flanges & optional SiC Ring 106370-2 106370-3 106385-2 106385-3 106366-2 106366-3
Unions & optional SiC Ring 106378 106378-1 106383 106383-1 106368 106368-1
2 1
Discharge O-ring (BSP Housings Only)
FKM 106303 105919
EPDM 106304 105918
Simriz 106306 105921
Kalrez 106305 105920
3 1
Housing O-ring
FKM - standard 106298
EPDM - optional 106299
Simriz - optional 106301
Kalrez - optional 106300
4 1 Impeller
See DB6-10 Impeller Assemblies Table on pg 31
4A 1
Impeller Thrust Ring Only
Filled PTFE (standard) 106257
SiC (optional) 106257-1
5 1
Impeller Drive Assembly
6-pole w/ carbon bushing 106361 106361-3 106361 106361-3 106361 106361-3
8-pole w/ carbon bushing 106361-1 106361-4 106361-1 106361-4 106361-1 106361-4
10-pole w/ carbon bushing 106361-2 106361-5 106361-2 106361-5 106361-2 106361-5
6-pole w/ PTFE bushing 106362 106362-3 106362 106362-3 106362 106362-3
8-pole w/ PTFE bushing 106362-1 106362-4 106362-1 106362-4 106362-1 106362-4
10-pole w/ PTFE bushing 106362-2 106362-5 106362-2 106362-5 106362-2 106362-5
6-pole w/ ceramic bushing 106363 106363-3 106363 106363-3 106363 106363-3
8-pole w/ ceramic bushing 106363-1 106363-4 106363-1 106363-4 106363-1 106363-4
10-pole w/ ceramic bushing 106363-2 106363-5 106363-2 106363-5 106363-2 106363-5
6-pole w/ SiC bushing 106364 106364-3 106364 106364-3 106364 106364-3
8-pole w/ SiC bushing 106364-1 106364-4 106364-1 106364-4 106364-1 106364-4
10-pole w/ SiC bushing 106364-2 106364-5 106364-2 106364-5 106364-2 106364-5
5A 1
Impeller Bushing Only
Carbon (standard) J102387
Filled PTFE (optional) J102790
Ceramic (optional) J103617
SiC (optional) J103617-1
6 1
Impeller Shaft
Ceramic (standard) 106293
SiC (optional) 106293-1
Hastelloy C (optional) 106293-2
7 1 Barrier
With silicon carbide thrust washer 106235-4 106235-5 106235-4 106235-5 106235-4 106235-5
8 1
Barrier O-Ring (For Vapor Protection Kit Option for NEMA Motors Only)
Buna N 106572
EPDM 106550
FKM 106551
11
Item Qty Description
DB6/6H/9 DB8 DB7/10
Pump Material Pump Material Pump Material
Polypro PVDF Polypro PVDF Polypro PVDF
9 1
Clamp Ring
Standard 106246 106246-1 106246 106246-1 106246 106246-1
Bronze Ring 106521 106521-1 106521 106521-1 106521 106521-1
ATEX N/A 106521-1 N/A 106521-1 N/A 106521-1
10 1
Clamp Ring O-Ring (For Vapor Protection Kit Option for NEMA Motors Only)
Buna N 106548
EPDM 106372
FKM J103954
11 1
Motor Adapter Column
Standard 106248 106248-1 106248 106248-1 106248 106248-1
ATEX N/A 106248-2 N/A 106248-2 N/A 106248-2
12 1
Motor Adapter O-ring (For Vapor Protection Kit Option for NEMA Motors Only)
Buna N 106549
EPDM 106373
FKM 106374
13 1
Drive Magnet Assembly with Retaining Ring (56C Frame Also Includes Set Screws)
56C frame, 6-pole 106283
56C frame, 8-pole 106283-1
56C frame, 10-pole 106283-2
143/145TC frame, 8-pole 106283-4
143/145TC frame, 10-pole 106283-5
63 frame, 6-pole 106289
63 frame, 8-pole 106289-1
63 frame, 10-pole 106289-2
71 frame, 6-pole 106286
71 frame, 8-pole 106286-1
71 frame, 10-pole 106286-2
80 frame, 8-pole 106292-1
80 frame, 10-pole 106292-2
90 Frame, 10-pole 106292-5
13A 1
Retaining Ring Only
56C frame 105708
143/145TC frame 105709
63 frame 106310
71 frame 106309
80 frame 105711
90 frame 105712
13B 2 Set Screws (NEMA Motor Only)
Stainless steel J101084
14 1
Motor Adapter Flange (IEC Motor Only)
63/71 frame w/ B14 flange 106271 106271-1 106271 106271-1 106271 106271-1
80 frame w/ B14 flange 105724-1 105724-2 105724-1 105724-2 105724-1 105724-2
90 frame w/ B14 flange 105725-1 105725-2 105725-1 105725-2 105725-1 105725-2
63 frame w/ B5 flange 106272 106272-1 106272 106272-1 106272 106272-1
71 frame w/ B5 flange 106273 106273-1 106273 106273-1 106273 106273-1
80/90 frame w/ B5 flange 106274 106274-1 106274 106274-1 106274 106274-1
63 frame w/ B14 flange ATEX N/A 106271-2 N/A 106271-2 N/A 106271-2
80 frame w/ B14 flange ATEX N/A 105724-3 N/A 105724-3 N/A 105724-3
90 frame w/ B14 flange ATEX N/A 105725-3 N/A 105725-3 N/A 105725-3
63 frame w/ B5 flange ATEX N/A 106272-2 N/A 106272-2 N/A 106272-2
80 frame w/ B5 flange ATEX N/A 106273-2 N/A 106273-2 N/A 106273-2
90 frame w/ B5 flange ATEX N/A 106274-2 N/A 106274-2 N/A 106274-2
DB 6 - 10 SPARE PARTS LIST - Cont.
13
Hardware - All DB6-10 Models
Item Qty Description Stainless Steel Titanium
15 6 Housing Bolt
J102789 106308
16 6 Housing Lock Washer
J102282 J103847
17 6 Housing Flat Washer
105767 105768
18 4 Clamp Ring Flatwasher
105767 105768
19 4 Clamp Ring Lockwasher
J102282 J103847
20 4 Clamp Ring Bolt
105770 105771
21 1
Drive Bolt (IEC Motors Only)
63 frame 106314 106315
71 frame 106312 106313
80 frame 105765 105766
90 frame 105770 105771
22 1
Drive Lockwasher (IEC Frames Only)
63 frame 106322 106323
71 frame 106320 106321
80 frame J100672 J104203
90 frame J102282 J103847
23 1
Drive Flatwasher (IEC Frames Only)
63 frame 106318 106319
71 frame 106316 106317
80 frame 105767 105768
90 frame 105722 105773
24 4 Motor Adapter Bolt
J100114 106311
25 4 Motor Adapter Lockwasher
J100115 J104206
26 4 Motor Adapter Flatwasher
J100128 J104207
27 4
Motor Adapter Flange Bolt (IEC Frames Only)
63 frame 106348 106349
71 frame 105765 105766
80 frame 105765 105766
90 frame 105770 105771
28 4
Motor Adapter Lockwasher (IEC Frames Only)
63 frame J103637 106350
71 frame J100672 J104203
80 frame J100672 J104203
90 frame J102282 J103847
29 4
Motor Adapter Flatwasher (IEC Frames Only)
63 frame J103638 106351
71 frame J100113 J104204
80 frame J100113 J104204
90 frame J101293 J103845
30 4 Motor Adapter Nut (IEC Frames Only)
63 frame & 71 frame with B14 flange 108141 N/A
Part Number 106577
Order fax: 814-459-3460
Tech Service: 800-888-3743
Literature ID No. FT07-975, R8, 7/15/13
Impeller Assemblies
Model Thrust Ring
Material
Impeller
Material #1 #2 #3 #4 #5 #6 #7 #8 #9
DB6
Impeller Diameter (in.) 3.00 2.75 2.50 3.50 3.25 3.00 2.75 N/A N/A
PTFE Polypro 106356-4 106356-6 106356-8 106356 106356-2 106356-4 106356-6 N/A N/A
PVDF 106356-5 106356-7 106356-9 106356-1 106356-3 106356-5 106356-7 N/A N/A
Silicon Carbide Polypro 106357-4 106357-6 106357-8 106357 106357-2 106357-4 106357-6 N/A N/A
PVDF 106357-5 106357-7 106357-9 106357-1 106357-3 106357-5 106357-7 N/A N/A
DB6H
Impeller Diameter (in.) 3.88 3.63 3.38 3.12 4.18 4.00 3.75 3.50 N/A
PTFE Polypro 106536 106536-2 106536-4 106536-6 106358 106358-2 106358-4 106358-6 N/A
PVDF 106536-1 106536-3 106536-5 106536-7 106358-1 106358-3 106358-5 106358-7 N/A
Silicon Carbide Polypro 106537 106537-2 106537-4 106537-6 106359 106359-2 106359-4 106359-6 N/A
PVDF 106537-1 106537-3 106537-5 106537-7 106359-1 106359-3 106359-5 106359-7 N/A
DB7
Impeller Diameter (in.) 3.18 3.00 2.75 3.63 3.38 3.12 N/A N/A N/A
PTFE Polypro 106354-4 106354-8 106354-10 106354 106354-2 106354-6 N/A N/A N/A
PVDF 106354-5 106354-9 106354-11 106354-1 106354-3 106354-7 N/A N/A N/A
Silicon Carbide Polypro 106355-4 106355-8 106355-10 106355 106355-2 106355-6 N/A N/A N/A
PVDF 106355-5 106355-9 106355-11 106355-1 106355-3 106355-7 N/A N/A N/A
DB8
Impeller Diameter (in.) 3.63 3.38 3.12 2.88 4.18 4.00 3.75 3.50 N/A
PTFE Polypro 106379-8 106379-10 106379-12 106379-14 106379 106379-2 106379-4 106379-6 N/A
PVDF 106379-9 106379-11 106379-13 106379-15 106379-1 106379-3 106379-5 106379-7 N/A
Silicon Carbide Polypro 106380-8 106380-10 106380-12 106380-14 106380 106380-2 106380-4 106380-6 N/A
PVDF 106380-9 106380-11 106380-13 106380-15 106380-1 106380-3 106380-5 106380-7 N/A
DB9
Impeller Diameter (in.) 4.18 N/A N/A N/A N/A N/A N/A N/A N/A
PTFE Polypro 106358 N/A N/A N/A N/A N/A N/A N/A N/A
PVDF 106358-1 N/A N/A N/A N/A N/A N/A N/A N/A
Silicon Carbide Polypro 106359 N/A N/A N/A N/A N/A N/A N/A N/A
PVDF 106359-1 N/A N/A N/A N/A N/A N/A N/A N/A
DB10
Impeller Diameter (in.) 3.75 3.50 3.25 3.00 4.18 4.00 3.75 3.50 3.25
PTFE Polypro 106352-4 106352-6 106352-8 106352-10 106352 106352-2 106352-4 106352-6 106352-8
PVDF 106352-5 106352-7 106352-9 106352-11 106352-1 106352-3 106352-5 106352-7 106352-9
Silicon Carbide Polypro 106353-4 106353-6 106353-8 106353-10 106353 106353-2 106353-4 106353-6 106353-8
PVDF 106353-5 106353-7 106353-9 106353-11 106353-1 106353-3 106353-5 106353-7 106353-9
This manual suits for next models
55
Table of contents
