Toyo DBH Series User manual

2. For Stuffing Box Pumps
- See section 5.6.2 and 6.2.2 in manual.
- Flush water must be turned ON before pump is started.
1. For Mechanical Seal Pumps
- See section 5.6.2 and 6.2.1 in manual.
- Toyo recommends a continuous clean water quench of ¼ - ½
gpm at maximum 5 psi (inlet is at bottom), if there is no quench
water never operate the pump dry.
Warning
Prior to pump start up REMOVE mechanical seal Setting
Plates (Qty. 3) installed for shipping.
Failure to do so can cause seal damage and leakage.

CUSTOMER: Industrial Pump Systems
PURCHASE ORDER: 9762
PUMP MODEL: DBH-100/75MD-ROH
PUMP SERIAL NUMBER: D-30051-52
TYPE DBH
HORIZONTAL SLURRY PUMPS
INSTALLATION,
OPERATION &
MAINTENANCE
INSTRUCTIONS
TOYO PUMPS NORTH AMERICA CORPORATION
2853 Douglas Road Telephone: [phone]
Burnaby, British Columbia Fax: [phone]
CANADA V5C 6H2 Email: [email protected]

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH MAINTENANCE OPERATION AND
INSTALLATION MANUAL
DOCUMENT NO: TED-039 REV. NO: 10 PAGE 1 OF 80
PREPARED BY: KSH DATE: MAY 1 1997
APPROVED BY: SN DATE: SUPERSEDES:
EFFECTIVE: MAY 5 2005 PUMP SERIAL NUMBER:
1.0 TECHNICAL DATA SHEET
CUSTOMER : Industrial Pump Systems
LOCATION :
APPLICATION : Mine Dewatering
PUMP MODEL : DBH-100/75MD-HC-ROH
EQUIPMENT NUMBER :
TAG NUMBER :
PUMP SERIAL NUMBER : D-30051
METALLURGY : HCr
OPERATING CONDITIONS
FLOW (USGPM)
NORMAL : 600
MAX :
MIN :
TDH (FEET) : 420
SLURRY S.G. : 1.05
SOLIDS % BY VOLUME :
MAX. PARTICLE SIZE (IN.) : 0.63
TEMPERATURE °F : 60
pH :Neutral
PUMP DATA
PUMP SPEED (RPM) : 1780
IMPELLER DIA. (IN.) : 19.7
SEAL TYPE : SiC Mechanical Seal
BEARING FRAME : F500
ASSEMBLY WEIGHT : 2164 KG [4761 lb.]
FOR COMPLETE PUMP DATA SHEET SEE SECTION 10.0

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH MAINTENANCE OPERATION AND
INSTALLATION MANUAL
DOCUMENT NO: TED-039 REV. NO: 10 PAGE 1 OF 80
PREPARED BY: KSH DATE: MAY 1 1997
APPROVED BY: SN DATE: SUPERSEDES:
EFFECTIVE: MAY 5 2005 PUMP SERIAL NUMBER:
1.0 TECHNICAL DATA SHEET
CUSTOMER : Industrial Pump Systems
LOCATION :
APPLICATION : Mine Dewatering
PUMP MODEL : DBH-100/75MD-HC-ROH
EQUIPMENT NUMBER :
TAG NUMBER :
PUMP SERIAL NUMBER : D-30052
METALLURGY : HCr
OPERATING CONDITIONS
FLOW (USGPM)
NORMAL : 600
MAX :
MIN :
TDH (FEET) : 420
SLURRY S.G. : 1.05
SOLIDS % BY VOLUME :
MAX. PARTICLE SIZE (IN.) : 0.63
TEMPERATURE °F : 60
pH :Neutral
PUMP DATA
PUMP SPEED (RPM) : 1780
IMPELLER DIA. (IN.) : 19.7
SEAL TYPE : SiC Mechanical Seal
BEARING FRAME : F500
ASSEMBLY WEIGHT : 2164 KG [4761 lb.]
FOR COMPLETE PUMP DATA SHEET SEE SECTION 10.0

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH INSTALLATION OPERATION AND
MAINTENANCE MANUAL DOCUMENT NO:
TED-039 REV. NO: 10 SHEET 2 OF 80
PREPARED BY: KSH RELEASE DATE: MAY 1 1997
APPROVED BY: SN REVISION DATE: MAR 15 2007
SUPERSEDES: REVISED BY:
1.1 CUSTOMER FILL IN DATA SHEET
START-UP OPERATING CONDITIONS
FLOW (USGPM) NORMAL : MAX. : MIN. :
DISCHARGE PRESSURE (PSI) :
SUCTION PRESSURE (PSI) : (IN.Hg):
SLURRY S.G. :
SOLIDS % BY VOLUME :
MAX. PARTICLE SIZE (IN.) :
TEMPERATURE :
pH :
START-UP PUMP DATA
PUMP SPEED (RPM) :
POWER DRAW (AMPS) :
OIL TEMPERATURE (°F) :
NOTES :

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH INSTALLATION OPERATION AND
MAINTENANCE MANUAL DOCUMENT NO:
TED-039 REV. NO: 10 SHEET 3 OF 80
PREPARED BY: KSH RELEASE DATE: MAY 1 1997
APPROVED BY: SN REVISION DATE: MAR 15 2007
SUPERSEDES: REVISED BY:
TABLE OF CONTENTS
SECTION 1.0 TECHNICAL DATA SHEET
1.1 CUSTOMER FILL IN DATA SHEET
SECTION 2.0 INTRODUCTION
SECTION 3.0 WARRANTIES
SECTION 4.0 SAFETY
SECTION 5.0 INSTALLATION
5.1 CHECK UPON ARRIVAL
5.2 STORAGE
5.2.1 NEW PUMP AND EQUIPMENT STORAGE
5.2.2 USED PUMP STORAGE
5.2.3 SPARE PARTS STORAGE
5.3 HANDLING
5.4 ALIGNMENT
5.5 MOUNTING
5.5.1 CONCRETE MOUNTING
5.5.2 STEEL FRAME MOUNTING
5.6 PIPING
5.6.1 SUCTION AND DISCHARGE
5.6.2 SEAL PIPING
5.7 POWER SUPPLY

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH INSTALLATION OPERATION AND
MAINTENANCE MANUAL DOCUMENT NO:
TED-039 REV. NO: 10 SHEET 4 OF 80
PREPARED BY: KSH RELEASE DATE: MAY 1 1997
APPROVED BY: SN REVISION DATE: MAR 15 2007
SUPERSEDES: REVISED BY:
TABLE OF CONTENTS (ctd)
SECTION 6.0 OPERATION
6.1 ROTATION
6.2 SHAFT SEAL
6.2.1 MECHANICAL SEAL
6.2.2 STUFFING BOX
6.2.3 CENTRIFUGAL SEAL
6.3 START UP
SECTION 7.0 MAINTENANCE
7.1 INSPECTION AND ADJUSTMENT FOR WEAR
7.1.1 GENERAL
7.1.2 IMPELLER CLEARANCE ADJUSTMENT
7.1.2.1 VISUAL INSPECTION
7.1.3 FRONT PULL OUT
7.1.4 BACK PULL OUT
7.1.5 IMPELLER REMOVAL
7.1.6 MECHANICAL SEAL INSPECTION
7.1.7 STUFFING BOX INSPECTION
7.1.7.1 LOW FLOW STUFFING BOX
7.1.7.2 FULL FLOW STUFFING BOX
7.1.8 BEARING CLEARANCE ADJUSTMENT
7.2 LUBRICATION
7.2.1 BEARING LUBRICATION
7.2.2 BEARING HOUSING SEAL LUBRICATION
7.3 TROUBLE SHOOTING

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH INSTALLATION OPERATION AND
MAINTENANCE MANUAL DOCUMENT NO:
TED-039 REV. NO: 10 SHEET 5 OF 80
PREPARED BY: KSH RELEASE DATE: MAY 1 1997
APPROVED BY: SN REVISION DATE: MAR 15 2007
SUPERSEDES: REVISED BY:
TABLE OF CONTENTS (ctd)
SECTION 8.0 BEARING FRAME ASSEMBLY
8.1 SHAFT PRE-ASSEMBLY
8.2 BEARING END COVER PRE-ASSEMBLY
8.3 BEARING HOUSING ASSEMBLY
8.4 BEARING CLEARANCE SETTING
8.5 SHAFT SLEEVE, FLINGER AND HARDWARE ASSEMBLY
8.6 FRAME ADAPTER, FEET AND BASE PLATE ASSEMBLY
8.7 BEARING SIDE LINER, MECHANICAL SEALS AND STUFFING BOX
8.7.1 BEARING SIDE LINER ASSEMBLY
8.7.2 MECHANICAL SEAL INSTALLATION
8.7.3 LOW FLOW STUFFING BOX
8.7.4 FULL FLOW STUFFING BOX
8.7.5 LOW FLOW WATER INLET
8.7.6 FULL FLOW WATER INLET
8.7.7 STUFFING BOX INSTALLATION
SECTION 9.0 WET END ASSEMBLY
9.1 IMPELLER INSTALLATION
9.2 CASING ASSEMBLY
9.2.1 WEAR RING INSTALLATION
9.2.2 SUCTION THROAT LINER INSTALLATION
9.2.3 CASING INSTALLATION

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH INSTALLATION OPERATION AND
MAINTENANCE MANUAL DOCUMENT NO:
TED-039 REV. NO: 10 SHEET 6 OF 80
PREPARED BY: KSH RELEASE DATE: MAY 1 1997
APPROVED BY: SN REVISION DATE: MAR 15 2007
SUPERSEDES: REVISED BY:
TABLE OF CONTENTS (ctd)
SECTION 10.0 APPENDIX
10.1 LUBRICATION GUIDE
10.2 BOLT TORQUE TABLE (A3670)
10.3 TOOL LIST (A3703)
10.4 TYPICAL PUMP SPEED vs. TORQUE CURVE (A3080)
10.5 WEIGHTS AND DIMENSION TABLE (B3497-B3501)
10.6 CENTRIFUGAL PUMP DATA SHEET
10.7 PUMP PERFORMANCE DATA
10.7.1 CERTIFIED PUMP TEST REPORT (IF APPLICABLE)
10.7.2 PUMP PERFORMANCE CURVE (IF APPLICABLE)
10.7.3 HYDROSTATIC PRESSURE TEST CERTIFICATE (IF APPLICABLE)
10.8 BEARING FRAME ASSEMBLY DRAWING
10.9 PUMP ASSEMBLY DRAWING
10.10 STUFFING BOX ASSEMBLY DRAWING (IF APPLICABLE)
10.11 PUMP GENERAL ARRANGEMENT DRAWING
10.12 MECHANICAL SEAL INSTRUCTIONS (IF APPLICABLE)
10.12.1 MECHANICAL SEAL ASSEMBLY DRAWING (IF APPLICABLE)
10.13 PARTS LIST
10.14 AUXILIARY EQUIPMENT
10.14.1 ELECTRIC MOTOR INFORMATION (IF APPLICABLE)
10.14.2 COUPLING INFORMATION (IF APPLICABLE)
10.14.3 GEAR REDUCER INFORMATION (IF APPLICABLE)

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH INSTALLATION OPERATION AND
MAINTENANCE MANUAL DOCUMENT NO:
TED-039 REV. NO: 10 SHEET 7 OF 80
PREPARED BY: KSH RELEASE DATE: MAY 1 1997
APPROVED BY: SN REVISION DATE: MAR 15 2007
SUPERSEDES: REVISED BY:
TABLE OF DRAWINGS
Drawing B3337 : Impeller Clearance Adjustment....................................................................... 18
Drawing B3339 : Front Pull Out................................................................................................. 21
Drawing B3338 : Back Pull Out ................................................................................................. 24
Drawing B3340 : Impeller Removal ........................................................................................... 27
Drawing B3346 : Bearing Clearance Adjustment ........................................................................ 30
Drawing B3298 : Shaft Pre-Assembly ......................................................................................... 37
Drawing B3299/1 : End Cover Pre-Assembly (Lip Seal)............................................................... 40
Drawing B3299/2 : End Cover Pre-Assembly (Bearing Isolator)................................................... 41
Drawing B3300/1 : Shaft Installation (Lip Seal) ........................................................................... 44
Drawing B3300/2 : Shaft Installation (Bearing Isolator) ............................................................... 45
Drawing B3301/1 : Bearing End Play (Lip Seal)........................................................................... 48
Drawing B3301/2 : Bearing End Play (Bearing Isolator)............................................................... 49
Drawing B3302/1 : Shaft Sleeve / Hardware (Lip Seal)................................................................ 52
Drawing B3302/2 : Shaft Sleeve / Hardware (Bearing Isolator).................................................... 53
Drawing B3303 : Frame Adapter Feet / Base Plate ...................................................................... 56
Drawing B3304 : Back Liner / Seal, Stuffing Box......................................................................... 57
Drawing B3341 : Mechanical Seal Installation ........................................................................... 60
Drawing B3342 : Stuffing Box, Low Flow Pre-Assembly ............................................................. 63
Drawing B3343 : Stuffing Box, Full Flow Pre-Assembly.............................................................. 66
Drawing B3344 : Water Inlet / Low Flow, Full Flow................................................................... 69
Drawing B3345 : Stuffing Box Pre-Assembly .............................................................................. 70
Drawing B3305 : Impeller Installation........................................................................................ 73
Drawing B3347 : Casing Assembly............................................................................................. 76
Drawing B3348 : Casing Installation........................................................................................... 79

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH INSTALLATION OPERATION AND
MAINTENANCE MANUAL DOCUMENT NO:
TED-039 REV. NO: 10 SHEET 8 OF 80
PREPARED BY: KSH RELEASE DATE: MAY 1 1997
APPROVED BY: SN REVISION DATE: MAR 15 2007
SUPERSEDES: REVISED BY:
2.0 INTRODUCTION
Your new Toyo “DBH” pump has been designed and manufactured to perform for many years with a
minimum of maintenance. However, parts will wear and need replacing sooner or later. The time
period between maintenance will greatly depend on the service and your maintenance program.
This manual has been compiled to help you minimize your maintenance and speed repairs when
required. Read and understand this manual.
Please provide the Serial Number of your equipment if additional manuals are needed.
In the front of the manual you will find a “Technical Data Sheet”. Most of this sheet will be filled in
at Toyo. However, there may be sections that are left blank. It is advisable to fill in these sections for
future reference.
NOT ALL PUMPS ARE OF STANDARD CONFIGURATION
WHEN ORDERING PARTS ALWAYS REFER TO PUMP SERIAL NUMBER. THIS NUMBER IS
FOUND ON THE NAME PLATE ON THE PUMP AND ON THE “TECHNICAL DATA SHEET” OF
THIS MANUAL.

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH INSTALLATION OPERATION AND
MAINTENANCE MANUAL DOCUMENT NO:
TED-039 REV. NO: 10 SHEET 9 OF 80
PREPARED BY: KSH RELEASE DATE: MAY 1 1997
APPROVED BY: SN REVISION DATE: MAR 15 2007
SUPERSEDES: REVISED BY:
3.0 WARRANTIES
Seller warrants that the products covered by this contract conform to applicable drawings and
specifications accepted in writing by Seller, will be free from defects in material and workmanship,
will be merchantable and will perform in accordance with the detailed specifications accepted in
writing by Seller. These warranties extend for a period of twelve (12) months from the date of
installation or eighteen (18) months from the date of shipment, whichever occurs first. Buyer’s
exclusive remedy and Seller’s sole duty under these warranties is to repair or replace the product.
Normal wear and tear on Seller’s product shall not constitute a warranty defect. THERE ARE NO
OTHER WARRANTIES, EXPRESSED OR IMPLIED, WHICH EXTEND BEYOND THOSE SET FORTH
ABOVE. THE WARRANTY OF MERCHANTABILITY IS LIMITED TO THE TIME PERIOD SPECIFIED
ABOVE. These warranties are contingent upon the product being stored, installed, maintained, and
operated in accordance with good engineering practices and the instructions contained in the
Operating and Maintenance Manual.
Seller’s total responsibility for damages whether arising in contract or tort arising out of or relating to
its performance of this contract or the products covered hereunder shall be limited to the contract
price for the product. In no event shall Seller be liable for any incidental or consequential damages
such as lost profits, loss of use of productive facilities or equipment, expenses or damages incurred in
reliance on Seller’s performance hereunder or lost production whether suffered by buyer or any third
party
Seller will be responsible for compliance with federal, provincial and municipal laws, codes, and
regulations relating to the manufacture of the products. Seller warrants that the products comply with
OSHA standards on drive guard design and construction in effect at the time of manufacture and
makes no other warranty with respect to any other standards. Seller shall not be responsible for failure
of parts to fit properly due to deterioration of or modification to Buyer’s existing equipment for which
such parts are furnished. Seller makes no warranty or guarantee that the equipment or parts supplied
hereunder will comply with any existing performance of Buyer’s equipment.
Seller reserves the right to furnish substitutes for material not available or whose use is restricted,
provided such substitute material is of equal quality and performance.

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH INSTALLATION OPERATION AND
MAINTENANCE MANUAL DOCUMENT NO:
TED-039 REV. NO: 10 SHEET 10 OF 80
PREPARED BY: KSH RELEASE DATE: MAY 1 1997
APPROVED BY: SN REVISION DATE: MAR 15 2007
SUPERSEDES: REVISED BY:
4.0 SAFETY
Do not install the equipment other than in accordance with the instructions contained in this manual.
When required information can not be found in this manual, contact the nearest TOYO branch office.
This instruction book should be read completely before starting installation, maintenance or
operation. The equipment is capable of trouble free operation when properly installed, operated and
maintained. These instructions present the basic information and methods required for proper
installation and maintenance.
This pump has been designed to provide safe and reliable service, however it is both a pressure
vessel and a piece of rotating machinery. The operator(s) must exercise good judgment and proper
safety practices to avoid damage to the equipment and surroundings and to avoid personal injury.
The instructions in this manual are intended for personnel with a general training in operation and
maintenance of centrifugal pumps.
It is assumed that your safety department has established a safety program based upon a thorough
analysis of industrial hazards. Before installing, operating or performing maintenance on the pump
and associated components described in this manual, it is suggested that the safety program is
reviewed to ensure that it covers the hazards arising from high speed rotating machinery. In general,
all personnel should be guided by all the basic rules of safety associated with the equipment and the
process.
It should be understood that the information contained in this manual does not relieve operating and
maintenance personnel of the responsibility of exercising normal good judgment in operation and
care of the pump and its components.
TOYO Pumps reserves the right to change the design, construction or material of any part without
incurring the obligation of installing such changes on pumps already delivered.

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH INSTALLATION OPERATION AND
MAINTENANCE MANUAL DOCUMENT NO:
TED-039 REV. NO: 10 SHEET 11 OF 80
PREPARED BY: KSH RELEASE DATE: MAY 1 1997
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5.0 INSTALLATION
5.1 CHECK UPON ARRIVAL
The unit must be inspected immediately upon arrival and any irregularities and damages due
to shipment must be reported to the carrier and TOYO pumps. A copy of this manual as well
as instruction sheets for other equipment (such as drive components etc.) are included in the
shipment. Put these papers in a safe, accessible place for ready reference when required. It is
important that the entire contents of this manual are studied before installation.
Pump parts and accessories may be packed inside shipping container, or attached to skids in
individual packages. Inspect all containers, crates and skids before discarding.
5.2 STORAGE
5.2.1 NEW PUMP AND EQUIPMENT STORAGE
If your new pump is to be stored for a long period of time before use, the following
procedures must be adhered to in order for TOYO to extend the normal warranties.
Notify TOYO that the equipment is to be stored and that the storage procedures will be
followed. Depending on size and type of equipment a visual inspection may be
required. Notify TOYO when equipment is to be removed from storage and put into
service. Failure to notify TOYO will result in your warranty being void. Your new
pump will arrive lubricated, ready for use. A small amount of grease or suitable
protectant must be applied to all exposed, unpainted metal surfaces such as shaft drive
end, shaft sleeve etc. Plug all flush water inlet ports on the stuffing box or mechanical
seal. Suitable covers out of plywood or plastic must be installed on the suction and
discharge flanges and any other openings on auxiliary equipment to provide adequate
protection against dirt, dust and nesting animals.

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH INSTALLATION OPERATION AND
MAINTENANCE MANUAL DOCUMENT NO:
TED-039 REV. NO: 10 SHEET 12 OF 80
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5.2.1 (ctd)
Equipment should be stored in a dry location and situated on an even surface with no
strains applied. If stored outdoors, the equipment must be covered with a waterproof
tarp secured to the equipment or skid. During storage, rotating equipment shafts must
be rotated by hand to relubricate the bearing surfaces and to prevent the bearings from
being damaged.
ROTATE ONCE A MONTH
Grease the bearing housing seals with new grease (1 to 2 shots).
5.2.2 USED PUMP STORAGE
A used pump should be completely disassembled and all parts cleaned and inspected.
All unpainted metal surfaces should be coated with grease or suitable protectant. All
previously painted parts should be touched up or repainted. Reassemble the pump as
per Sections 8.0 and 9.0 and store as per Section 5.2.1.
5.2.3 SPARE PARTS STORAGE
Spare parts may not arrive at your site with adequate protection for long term storage
unless it was specified in your parts order. It is the customer’s responsibility to ensure
that all spare parts are prepared and packaged for long term storage. Components such
as bearings, mechanical seal assemblies and parts should be left in their original sealed
containers. The long term storage of elastomer (rubber) parts must be given
consideration since elastomers may have a short shelf live under certain circumstances.

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH INSTALLATION OPERATION AND
MAINTENANCE MANUAL DOCUMENT NO:
TED-039 REV. NO: 10 SHEET 13 OF 80
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5.3 HANDLING
Use care when moving pumps. Rough handling can cause breakage or permanent
misalignment. Sling pumps so that any protruding components will not be damaged. Do not
use choke type sling or chain arrangements for skids or containers.
Make sure that the lifting equipment is rated to safely handle the weight of the pump and
auxiliary equipment.
See Section 1.0, TECHNICAL DATA SHEET for weight information.
5.4 ALIGNMENT
The pump was checked during assembly and testing for proper alignment of the drive
equipment. Handling during shipment, storage or preparation for installation could have
caused distortions. For direct or gear reducer driven units the alignment must be verified upon
installation prior to start-up. Follow the drive manufacturers instructions and tolerances for
angular and parallel alignment.
5.5 MOUNTING
5.5.1 CONCRETE MOUNTING
Anchor bolts should be sized to approximately 1.5 mm (1/16”) smaller than mounting
holes provided on pump base. These bolts will not be subject to shear and therefore
should be the type that will resist pull out. Ideally the bolts should be set in the
concrete.
5.5.2 STEEL FRAME MOUNTING
If a pump is to be mounted on steel frame, the frame must be of sufficient member
depth and strength to support pump weight and dynamic load between a given span.
Mounting bolts should be sized 1.5 mm (1/16”) smaller than the mounting holes in
base. Bolts should be Grade 6.4 (ANSI Grade 5) or better.

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH INSTALLATION OPERATION AND
MAINTENANCE MANUAL DOCUMENT NO:
TED-039 REV. NO: 10 SHEET 14 OF 80
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5.6 PIPING
5.6.1 SUCTION & DISCHARGE
Suction and discharge piping should be of proper wall thickness and diameter to
handle flow and pressures required for your pump. Pump flanges will be drilled for
proper ANSI bolt pattern for pipe size and pressure. All piping should be
independently supported. Pump casing should never bear the weight of the piping.
(Pump casing may break and later removal of casing would be difficult.) Flexible pipe
or expansion type joints are recommended for suction and discharge side of pump
provided that they are of non- collapse type.
5.6.2 SEAL PIPING
Seal water must be supplied to pump if a Mechanical Seal or a Full or Low Flow
Stuffing Box is used. This water must be of sufficient pressure and volume. See
Operation Section for type of seal installed.
5.7 POWER SUPPLY
Power supply should be as per local and national codes. All wiring and installation of
disconnects, etc., should be performed by qualified personnel.
6.0 OPERATION
6.1 ROTATION
After your pump is installed properly, you must check for proper rotation.
DISCONNECT ALL DRIVE EQUIPMENT
If you check rotation with drive equipment connected and the rotation is incorrect, the
impeller may INSTANTLY UNSCREW causing serious damage to pump. When viewed from
suction end, rotation is counter clockwise. At this point rotate shaft by hand to check impeller
clearance. If you have proper motor rotation and impeller clearance, the pump is now ready
to be started. Install and tighten belts or couplings. Install all guards.

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH INSTALLATION OPERATION AND
MAINTENANCE MANUAL DOCUMENT NO:
TED-039 REV. NO: 10 SHEET 15 OF 80
PREPARED BY: KSH RELEASE DATE: MAY 1 1997
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6.2 SHAFT SEAL
6.2.1 MECHANICAL SEAL
If your pump is equipped with a mechanical seal, make sure that all centering tabs and
cartridge retainers have been removed before operating pump. There should be no
visible leakage from the seal area during operation or shut down unless the mechanical
seal is equipped with a quench arrangement. Toyo recommends a continuous clean
water quench of ¼ - ½ gpm at maximum 5psi (inlet is at bottom), if there is no quench
water never operate the pump dry.
6.2.2 STUFFING BOX
If your pump is equipped with a Full or Low Flow Stuffing Box, snug the gland
follower, being careful not to over tighten.
FLUSH WATER MUST BE TURNED ON BEFORE PUMP IS STARTED
The following chart gives flow rates for Full and Low Flow.
FRAME F200 F300 F400 F500 F600 F650 F800
CONFIG LF FF LF FF LF FF LF FF LF FF LF FF LF FF
LIT/MIN 2.5 11 4 15 7 27 7 27 10 38 10 38 15 60
GPM 0.7 3 1 4 1.9 7 1.9 7 2.6 10 2.6 10 4 15.9
Gland flush water should be 5 to 10 PSI above discharge pressure of pump. If water
is being pumped, then gland flush water may come from the discharge side of the
pump, but this water must be clean so that no sand, etc., is pumped into Gland area. A
valve should be installed in line to adjust flow. Provide a drain for discharge water
Open suction valve, start pump and let it come up to RPM and pressure.
For a Full or Low Flow Stuffing box seal, tighten the gland follower until a small trickle
of water is coming from around the gland follower. Let pump run for 10 to 15 minutes

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH INSTALLATION OPERATION AND
MAINTENANCE MANUAL DOCUMENT NO:
TED-039 REV. NO: 10 SHEET 16 OF 80
PREPARED BY: KSH RELEASE DATE: MAY 1 1997
APPROVED BY: SN REVISION DATE: MAR 15 2007
SUPERSEDES: REVISED BY:
6.2.2 (ctd)
to be sure packing does not overheat. New packing will wear and seat in, and will
require adjustment from time to time. These seals will leak clear water while running
and may leak slurry when stopped if there is a large suction head present. Gland Flush
water may be left on while pump is not running.
6.2.3 CENTRIFUGAL SEAL
If your pump is equipped with a Centrifugal Seal, grease the seal with 10 or 15 shots of
grease before installing the automatic greaser and starting. The gland follower should
be snugged before starting the pump. Do not over tighten the gland follower or you
will burn the packing and cause damage to the shaft sleeve.
Open suction valve, start pump and let it come up to RPM and pressure.
For a Centrifugal Seal, tighten packing until no leaks occur. Do not over tighten. Let
pump run for 10 to 15 minutes and re-check. A Centrifugal Seal should not leak while
pump is running, but may leak when pump is stopped if there is a large suction head
present.
6.3 START UP
During the first few days of operation while all parts are still new, observe the suction and
discharge gage readings as well as the motor amperage. If a flow meter is available monitor
the pump output as well.
Record these readings in the TECHNICAL DATA SHEET provided in Section 1.0 for future
reference.
These readings should be taken and recorded periodically and will help you to establish an
inspection and maintenance schedule. Keeping track of your pumps performance will make it
easier to identify problems before they become serious and cause undue damage.

TOYO PUMPS NORTH AMERICA CORPORATION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TITLE: DBH INSTALLATION OPERATION AND
MAINTENANCE MANUAL DOCUMENT NO:
TED-039 REV. NO: 10 SHEET 17 OF 80
PREPARED BY: KSH RELEASE DATE: MAY 1 1997
APPROVED BY: SN REVISION DATE: MAR 15 2007
SUPERSEDES: REVISED BY:
7.0 MAINTENANCE
7.1 INSPECTION & ADJUSTMENT FOR WEAR
7.1.1 GENERAL
After your pump has been in service for awhile, the impeller, casing and suction wear
liner will become worn causing the pump to lose efficiency. The speed with which
these parts will wear will depend on the material and concentration being pumped.
As noted in the “Operation Section”, the suction and discharge pressure, as well as the
flow and AMP draw should have been recorded in the “Notes” of the Technical Data
Sheet located in Section 1.0 of this manual.
By comparing the original data with your current readings, the wear and efficiency of
your pump can easily be determined.
The output flow and pressure dropping off with an increase in amperage draw on the
motor signals wear of the wet end components requiring adjustment.
After the pump has been adjusted several times, the wet end parts should be visually
inspected.