DB5_IOM_Manual
DB3, 4, 5 & 5.5 Series
Sealless 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 specified 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 modifications are
made to these devices.
Type of Device:
Centrifugal Pumps
AC/AK/AV - 400/500/600/800 Models:
DB-3/4/5/5.5/6/6H/7/
8/9/10/11/15/22
KC-3/4/5/5.5/6/6H/8/10/11/22/32
MSKC
SP-10/11/15
UC-1516/1518/326
GP-11/22/32
MSVKC
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 . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 1
Chemical Reaction Disclaimer
Safety Precautions
Installation/Operation Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Section I - Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Section II - Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Mounting
Piping
Motor/Electrical
Section III - Start-up and Operation. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 5
Section IV - Maintenance . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 5
Section V - Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Recommended Maintenance Schedule
Outer Drive Replacement
Thrust Ring Replacement
Bushing Replacement
Section VI - Reassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Section VII - Troubleshooting . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 8
Section VIII - Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Part Number Explanation . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 9
Spare Parts Drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Spare Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
FTI Contacts:
Tech Service: PH 800-888-3743; Email [email protected]
Order Fax: 814-459-3460 or 814-455-8518
Sales: 1-814-455-4478; Toll Free 1-800-934-9384 (U.S. & Canada)
IMPORTANT INFORMATION - READ ME FIRST!
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 reaction, 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: READ THIS MANUAL COMPLETELY BEFORE INSTALLING AND OPERATING THIS UNIT. FAILURE TO FOLLOW THESE
PRECAUTIONS CAN RESULT IN SERIOUS INJURY OR DEATH.
WARNING: Magnetic field hazard: This pump contains powerful magnets. Exposed magnets (pump not connected to motor) produce
powerful 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 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, items with magnetic stripes like credit cards and magnetic computer media such as floppy discs and hard drives.
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 chemicals present during inspection.
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.
1
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 or ceramic 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 bushing. 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).
DB3, 4, 5 & 5.5 Capabilities
Maximum Working Pressure: 60 psi (4.1 bar)
Maximum Viscosity:
50 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. 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
2900 rpm
.25 gpm
(.95 lpm)
.95 lpm
(.25 gpm
Maximum Allowable Motor Power: Do not exceed the maximum power rating for the pump coupling.
Standard coupling for the DB3,4, and 5 is 4 pole. Maximum motor power is 1/4 horsepower (.18 kW).
Standard coupling for the DB5.5 is 6 pole. Maximum motor power is 1/2 horsepower (.37 kW).
Unpacking and Inspection
Unpack the pump and examine for any signs of shipping damage. If damage is detected, save the packaging and notify the carrier
immediately.
2
Section I - Assembly
4. Make sure the motor shaft is clean and free of burrs. Coat
the motor shaft with anti-seize compound. If not installed
insert key supplied with motor into keyway on motor shaft.
Pumps with Motors
Proceed to Installation Section
Pumps Without Motors
Tools Required: Metric socket set, 7 mm socket (63 frame), 8 mm
socket (71 frame), 2.5 mm (56 frame), 3 mm and 4 mm Allen
wrenches, and Phillips-head screwdriver.
1. Remove the pump, drive magnet assembly and hardware package from the carton.
NOTE: The outer drive is precision machined and has a bore
tolerance of +0.001/-0 inch. It may be necessary to tap the
drive on with a soft mallet.
5.
Slide the outer drive magnet assembly (item 5) onto the motor shaft until the motor shaft contacts the snap ring in the
bore of the drive. Turn the drive by hand to make sure it
rotates freely. See figures 4 & 5.
CAUTION: Keep away from metallic particles, tools and
electronics. 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 result-
ing in injury or damage.
Figure 4
Figure 5
WARNING: Be careful, magnets will try to attract tools.
Figure 1
2. Place motor on the fan end. See figure 1.
NOTE: The DB3, 4 & 5 pumps mount to either IEC
56, 63, 71 B14 frame motors depending on which
motor adapter is ordered. The motor adapter flange
(item 6) can be used for either frame depending on
which side is used. See stamped identification on
the flange. See figure 2. DB5.5 pumps mount to IEC
63 and 71 frame motors.
Secure the drive on the motor shaft using bolt, lock washer
and flat washer (items 9, 10, 11). Coat the bolt threads with
anti-seize compound. 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 using the 2.5 mm allen wrench (56 frame),
7mm socket (63 frame) or 8 mm socket (71 frame) to the following torque rating:
• 56 frame (M3) = 8 in-lbs (.9 N-m)
• 63 frame (M4) = 15 in-lbs (1.7 N-m)
• 71 frame (M5) = 30 in-lbs (3.4 N-m)
7. Tighten two set screws (item 5B) to a torque of 75 in.-lbs.
(8.5 N-m) using a 1/8” Allen wrench. See figure 6.
3. Install the motor adapter flange (item 6) on the motor face
using motor adapter flange bolts (item 12).
6.
NOTE: Apply anti-seize compound on the threads of the bolts. Hand tighten bolts being careful not to over tighten.
See figure 3.
Figure 6
Figure 2
Figure 3
3
8. Install the pump end on the motor/drive magnet assembly.
Carefully slide the pump onto the drive magnet assembly.
See figure 7.
the Phillips-head screwdriver. Hand tighten screws being careful not to over tighten. See figures 11 & 12.
9. Secure the pump to the motor adapter flange (item 6) with
(4) motor adapter screws (item 8). Hand tighten screws be ing careful not to over tighten. See figure 8.
Figure 11
Figure 7
NOTE: Install two long screws (item 7A) inserting one on either side of the discharge nozzle. See figure 12.
Piping
Figure 8
10.Rotate the motor fan or turn the impeller to ensure that there is no binding in the pump.
11.Proceed to Installation Section.
Section II – Installation
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.
Mounting
• 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.
Motor feet should be securely fastened to a solid foundation.
Instructions for horizontal discharge installation:
• The suction side of the pump should be as straight and short
as possible to minimize pipe friction.
Note: The pump ships from the factory so the discharge will be
in a vertical orientation. These instructions allow a horizontal
discharge.
1.
Figure 12
• 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.
Place the pump & motor in an upright position on the fan end
of the motor. Remove (8) housing screws (item 7). Pull the housing away from the motor adapter / barrier (item 4) and
remove the o-ring (item 2). Reinstall the housing in the 3:00
position looking from the pump side. Note: O-ring will be
lubricated from the factory and should not require additional
lubrication. See figure 9.
• 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.
•
2. Reinstall the o-ring onto the housing (item 1). If o-ring will
not stay in place it may be necessary to roll the o-ring under
when installing it on the housing. See figure 10.
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 both the suction and discharge is used to make the pump accessible for maintenance. The
check valve helps protect 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 is chemically resistant
against the fluid being pumped.
Figure 9
3.
• The suction valve must be completely open to avoid restrict ing the suction flow.
Figure 10
• 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.
Align the holes in the housing with the motor adapter /
barrier. Push the housing with o-ring in place straight down
to seat the o-ring. Hold the housing in place and reinstall the
(8) housing screws (items 7, 7A) in a star like pattern using
4
Motor/Electrical
2. Open the inlet (suction) and discharge valves completely and allow the pump to fill with liquid.
Install the motor according to NEC requirements and local electrical codes. The motor should have an overload protection circuit.
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.
Wire the motor for counter-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.
5. Use of a power monitor is strongly recommended for pumps
with PTFE bushings. The power monitor will stop the pump
and help prevent damage if the pump should run dry.
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.
Shutdown
If motor is supplied by Finish Thompson please use the following
wiring diagram:
Use the following procedure to shutdown the pump.
1. Slowly close the discharge valve.
2. Turn off the motor.
3. Close the suction valve.
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.
Section IV - Maintenance
Recommended Maintenance Schedule
If utilized, verify that the power monitor has been properly
installed according to the manufacturers instructions.
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 temperatures, or in other conditions that
could cause accelerated wear, then this initial examination should
be sooner.
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. PTFE or ceramic bushings can’t be run dry without
damage to pump components.
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.
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 housing.
NOTE: A pump running backwards will pump but at a greatly
reduced flow and pressure.
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.
Section III - Start- up and Operation
1. This pump must be filled from a flooded suction tank (grav-
ity) or primed with liquid from an outside source. DB Series
pumps are not self-priming.
5
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 chemicals present
during inspection.
WARNING: Magnetic force hazard. This pump should only
be disassembled and assembled using the recommended procedures. The magnetic attraction is powerful enough to rapidly pull
the motor end and the wet end together. To avoid injuries, do not
place fingers between the mating surfaces of the motor and wet
end. Keep the drive magnet and impeller assembly away from
metal chips or particles.
Figure 17
Figure 16
NOTE: Replace the thrust washer and bushing if wear ex-
ceeds dimensions in figure 18.
1. Stop the pump, lock out the motor starter, close all the
valves that are connected to the pump, and drain/decon taminate the pump.
WARNING: The pump must be thoroughly flushed of any
hazardous materials and all internal pressure relieved prior
to opening the pump. Allow the pump to reach ambient temperatures prior to performing maintenance.
2.
Place the pump & motor vertically
on the motor fan end on a work
bench. Remove the (4) screws (item
8) securing the pump to the motor
adapter / barrier (item 4). See
figure 13.
Figure 18
7. Remove the o-ring (item 2) and look for chemical attack,
swelling, brittleness, cuts, etc. See figure 19.
8. Inspect the motor adapter / barrier (item 4). Inspect the inside and outside for signs of rubbing or damage. See
figure 20.
Figure 13
3. Firmly grab the pump and pull straight up to disengage the motor and pump. See figure 14.
Figure 19
4. Place pump on bench with housing facing up. Remove (8)
housing screws (item 7). See figure 15.
Figure 14
9. Visually inspect the outer drive (item 5) for rubbing, damage, corrosion or loose magnets. See figure 21.
Figure 15
5. Pull housing (item 1) straight up to remove. Inspect hous ing for signs of wear or damage. Look for signs of rubbing or
cracked thrust ring. See figure 16.
6.
Figure 20
Figure 21
Outer Drive Replacement
Remove impeller assembly (item 3). See figure 17. Inspect
impeller and drive for signs of wear or damage. Look for
signs of rubbing, damage and wear. Check the impeller
thrust ring and bushing for wear.
1. Remove the bolt, lock washer and flat washer (items 9,10 &
11) from the center of the drive. Hold the drive with your hand to prevent it from turning. See figure 22.
WARNING: Be careful, tools may be attracted to the magnets.
6
2. Remove the drive magnet from the motor shaft by gently
pushing down on 2 pry bars or large flat head screwdrivers
from the bottom of the drive. See figure 23.
Section VI - Reassembly
1. Place impeller assembly (item 3) into the motor adapter /
barrier (item 4). See figure 31.
Figure 22
2.
Figure 23
Install o-ring (item 2) onto housing (item 1). Lubricate the oring with P80 or a compatible lubricant. If o-ring will not
stay in place it may be necessary to roll the o-ring under
when installing it on the housing. See figure 32.
3. To reinstall the original drive or a new drive, follow the in structions from Section I – Assembly, Pumps without Motors, Steps 4 - 6.
Thrust Ring Replacement
1. Thrust ring (item 3A) is held in-place with a press fit. Using
fingers, pliers or flat head screwdriver pry ring up and out of
the holder. See figure 24.
3.With the discharge port oriented in either a vertical
(12:00) or horizontal (3:00) position, align the holes of the
housing with the motor adapter / barrier. The flat side of the
motor adapter / barrier aligns with the motor feet or bottom
of the pump. See figures 33 & 34. See note on page 4, step 3
of Mounting.
2. To reinstall simply press the thrust ring into the impeller by
hand. See figure 25.
Figure 24
Figure 32
Figure 31
Figure 25
Bushing Replacement
To remove the bushing, place the impeller assembly in an arbor
press. Insert a 1/2” (12.7mm) diameter plastic or wood dowel
through the eye of the impeller and press the bushing out. See
figure 26.
Figure 33
Vertical Discharge
To replace the bushing (item 3B), place the top of the impeller on
an arbor press with the thrust ring face down. Insert the front of
the bushing into the center of the impeller assembly & press into
place using a ¾” (19 mm) diameter plastic or wood dowel until
the bushing reaches the shoulder molded into the inner drive.
See figures 27, 28, 29 & 30.
Figure 34
Horizontal Discharge
NOTE: Install two long screws (item 7A) inserting one on either side of the discharge nozzle.
4.
Push the housing with o-ring in place straight down to seat
the o-ring. Hold the housing in place & reinstall the (8) housing screws (item 7) in a star like pattern using the phillips
head screw driver. Hand tighten screws being careful not to
over tighten. See figure 35.
Figure 27
Figure 26
Figure 35
Figure 28
Figure 29
5. To complete the reassembly go to Section I – Assembly,
Pumps without Motors, Steps 4 - 10.
Figure 30
7
Section VII - Troubleshooting
Section VIII - Warranty
General Notes:
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, provided (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.
•
•
•
•
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
number of magnets on inner and outer drive magnet assemblies).
Phone FTI’s Technical Service Department, 1-800-888-3743, or e-mail, [email protected], 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 counter clockwise)
Manufacturer shall not be liable for incidental or consequential
damages including, but not limited to, process down time, transportation costs, costs associated with replacement or substitution products, labor 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.
Insufficient Pressure
•
•
•
•
Air or gas in liquid
Impeller diameter too small
System head lower than anticipated
Motor speed insufficient or motor rotation incorrect (correct rotation when viewed from the fan end is counter clockwise)
Ordering Spare Parts
Spare parts can be ordered from your local distributor. Always
refer to the pump model to avoid error.
Other FTI Products
Loss of Prime
•
•
•
•
•
•
See our full product range at www.finishthompson.com.
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
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
8
Part Number Explanation
DB3, 4, & 5 (1” FNPT x 1/2” MNPT) Base Models
DB5.5 (1” FNPT x 3/4” MNPT) Base Models
Polypropylene Models
Pump End
Wet End
DB3P, DB4P, DB5P, DB5.5P
DB3PW, DB4PW, DB5PW, DB5.5PW
PVDF Models
DB3V, DB4V, DB5V, DB5.5V
DB3VW, DB4VW, DB5VW, DB5.5VW
ALTERNATIVE COMPONENT PRICE ADDERS
COMPONENT
BASE
or
ALTERNATIVE
CODE
Bushing
Carbon
or
PTFE
Alumina Ceramic
T
R
O-ring
FKM
or
EPDM
E
Connection
NPT
or
BSP
B
Magnet
4-pole: up to 1/4 hp (0.18 kW)
or
6-pole upgrade: up to 1/2 hp (0.37 kW)
6P
or
IEC 63/B14
IEC 71/B14 (requires 6-pole magnet upgrade)
IEC 71/B14 (requires 6-pole magnet upgrade)
IEC56/B14
64
74
74
54
DB3 Only
IEC 56/B14
DB4/5 Only
IEC 63/B14
Motor Adapter
Motor
1/8 Hp (0.09 kW), 115V, 1 Ph, 60 Hz,
IEC 56 B14 frame, TEFC, CSA, CE
same as above w/ 12 ft. cord & NEMA plug
1/8 Hp (0.09 kW), 230V, 1 Ph,
50/60 Hz, IEC 56 B14 frame, TEFC, CE
same as above w/ 12 ft. cord & NEMA plug
1/4 Hp (0.19 kW), 115V, 1 Ph, 60 Hz,
IEC 63 B14 frame, TEFC, CSA, CE
same as above w/ 12 ft. cord & NEMA plug
1/4 Hp (0.19 kW), 230V, 1 Ph,
50/60 Hz, IEC 63 B14 frame, TEFC, CE
same as above w/ 12 ft. cord & NEMA plug
1/2 Hp (0.37 kW), 115V, 1 Ph, 60 Hz,
IEC 71 B14 frame, TEFC, CSA, CE
same as above w/ 12 ft. cord & NEMA plug
1/2 Hp (0.37 kW), 230V, 1 Ph,
50/60 Hz, IEC 71 B14 frame, TEFC, CE
same as above w/ 12 ft. cord & NEMA plug
Not Standard
1. Example: Select base model, e.g. DB3V or DB4P.
2.
or
M612
M619
M614
M620
M613
M618
M615
M621
M616
M622
M617
M623
If standard components are not suitable, enter symbol(s) of alternative components in any order. For example, in part number
DB3V-E-T-M612, the pump is a DB3 PVDF with EPDM housing O-ring , PTFE bushing and 1/8 Hp, 115V motor. In part number,
DB4P-R-B-6P-74-M617, the pump is a DB4 polypro with ceramic bushing, BSP threaded ports, 6 pole magnet upgrade, and 1/2 Hp, 230V, 50/60 Hz motor.
3. There is a price adder for a ceramic bushing option and 6 pole magnet upgrade.
NOTE: For existing pumps in the field, the model number appears on the label located on the top of the motor adapter. Compare the model
number on the pump to the chart above to determine exactly what components the pump contains. Should you have questions, feel free to
contact Finish Thompson.
9
DB3-4-5-5.5 Spare Parts Drawing
10
DB3/4/5/5.5 SPARE PARTS LIST
Item
Qty
1
1
2
1
3
1
3A
1
3B
1
4
1
5
1
5A
1
5B
2
6
1
7
6
7A
2
8
4
9
1
Pump Material
Polypropylene
PVDF
Description
Impeller Housing with Thrust Ring & Housing Screws
DB3/4/5 NPT
DB3/4/5 BSP
DB5.5 NPT
DB5.5 BSP
Housing O-ring
FKM
EPDM
Impeller Assembly with Thrust Ring & Bushing
DB3 - 2.30" w/ 4-pole magnet set & carbon bushing
DB3 - 2.30" w/ 4-pole magnet set & PTFE bushing
DB3 - 2.30" w/ 4-pole magnet set & ceramic bushing
DB3 - 2.30" w/ 6-pole magnet set & PTFE bushing
DB3 - 2.30" w/ 6-pole magnet set & carbon bushing
DB3 - 2.30" w/ 6-pole magnet set & ceramic bushing
DB4 - 2.68" w/ 4-pole magnet set & carbon bushing
DB4 - 2.68" w/ 4-pole magnet set & PTFE bushing
DB4 - 2.68" w/ 4-pole magnet set & ceramic bushing
DB4 - 2.68" w/ 6-pole magnet set & carbon bushing
DB4 - 2.68" w/ 6-pole magnet set & PTFE bushing
DB4 - 2.68" w/ 6-pole magnet set & ceramic bushing
DB5 - 3.00" w/ 4-pole magnet set & carbon bushing
DB5 - 3.00" w/ 4-pole magnet set & PTFE bushing
DB5 - 3.00" w/ 4-pole magnet set & ceramic bushing
DB5/5.5 - 3.00" w/ 6-pole magnet set & carbon bushing
DB5/5.5 - 3.00" w/ 6-pole magnet set & PTFE bushing
DB5/5.5 - 3.00" w/ 6-pole magnet set & ceramic bushing
Impeller Thrust Ring
PTFE
Impeller Bushing
Carbon (standard)
PTFE (optional)
Ceramic (optional)
Motor Adapter/Barrier
w/ ceramic shaft & silicon carbide thrust washer
Outer Drive Magnet Assembly w/ Retaining Ring & Set Screws
56 frame, 4-pole
63 frame, 4-pole
63 frame, 6-pole
71 frame, 6-pole
Retaining Ring
56 frame
63 frame
71 frame
Set Screw
Stainless steel
Motor Adapter Flange
56/63 frame
71 frame
Housing Screw
Stainless steel
Housing Discharge Screw
Stainless steel
Motor Adapter Barrier Screw
Stainless steel
Drive Bolt
56 frame
63 frame
71 frame
11
A102865-1
A102865-2
A102865-5
A102865-6
A102865-3
A102865-4
A102865-7
A102865-8
J103572
J103571
107122-4
107122-10
107122-16
107122-22
107122-28
107122-34
107122-2
107122-8
107122-14
107122-20
107122-26
107122-32
107122
107122-6
107122-12
107122-18
107122-24
107122-30
107122-5
107122-11
107122-17
107122-23
107122-29
107122-35
107122-3
107122-9
107122-15
107122-21
107122-27
107122-33
107122-1
107122-7
107122-13
107122-19
107122-25
107122-31
M102141
J102387
J102790
J103617
106700
106700-1
107131-1
107131
107131-3
107131-2
107124
106310
106309
J102466
106701
107563
106701-1
107563-1
J101020
107570
J101020
107142
106314
106312
DB3/4/5/5.5 PARTS CONT.
10
1
11
1
12
4
Drive Lock Washer
56 frame
63 frame
71 frame
Drive Flat Washer
56 frame
63 frame
71 frame
Motor Adapter Flange Bolt
56/63 frame
71 frame
107141
106322
106320
107125
106318
106316
107140
107792
P/N 107599, R4, 5/22/13
Lit. ID No. FT10-1123B
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