Finish Thompson DB3, DB 4 User 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 specied 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 modications 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: [phone]

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 techservice@finishthompson.com

Order Fax: [phone] 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)

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.

.95 lpm

(.25 gpm

2