Dixon Bradford BC114, Bradford BC218, Bradford BC318, Bradford BC328, Bradford BC214 Instruction & Operation Manual
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Instruction & Operation Manual
BC-Series Centrifugal Pump
Read and understand this manual prior to
installing, operating or servicing this equipment
Updated March 2012
Table of Contents
Safety .......................................................2
Care of Stainless Steel .............................3
Introduction ...............................................4
Mechanical Specications ........................5
Dimensions ............................................6-7
Installation ...........................................8-14
Unpacking ..........................................8
Tools needed .....................................8
'D' seal pump assembly ..................8-9
'DG' seal pump assembly ...........10-11
Location ........................................... 11
Leveling ........................................... 11
Piping guidelines.........................12-14
General .....................................12
Suction .................................12-13
Discharge ..................................13
Valve location ............................14
Electrical .................................................14
Operation ...........................................15-17
Priming the Pump .......................15-16
Starting the Pump ............................17
Stopping the Pump ..........................17
Maintenance ......................................17-19
Scheduled Maintenance ..................17
Disassembly & Inspection................18
Seal Maintenance & Repair .............19
Troubleshooting .................................20-21
Model No.s & Part No.s .....................22-25
Pump model No.s ............................22
Motor model No.s ............................23
Part number key ..............................24
Common parts .................................24
Variable parts ...................................25
Repair Kits ..................................26-27
Warranty .................................................28
Safety Information
The following DANGER, WARNING and CAUTION signs are contained in this manual.
To avoid serious injury and/or possible damage to equipment, pay attention to these
messages.
Hazards or unsafe practices which could result in severe personal injury or
death. The word DANGER is used in the most extreme cases.
Hazards or unsafe practices which could result in minor or moderate injury.
May also be used to alert against an unsafe operating or maintenance
practice.
Indicates a potentially hazardous situation which, if not avoided, could result
in death or serious injury.
Use only replacement parts and devices recommended by the manufacturer to maintain the
integrity of the equipment. Make sure the parts are properly matched to the equipment series,
model, serial number and revision level of the equipment.
Safety labels are placed on every pump. Do not remove any labeling on any BC-series pump.
Replace any label that is missing.
DO NOT modify any Bradford™ product. Non-factory modications could create hazardous
conditions and voids all warranties. DO NOT attempt to use a Bradford™ product in any
application that exceeds the product rating.
2 Instruction & Operation Manual800.789.1718
PUMP
Care of Stainless Steel
The stainless steel components in Dixon Sanitary equipment are machined, welded and assembled by skilled craftsmen using
manufacturing methods that preserve the corrosion-resistant quality of the stainless steel.
Retention of corrosion-resistant qualities under processing conditions requires regular attention to the precautions listed below.
1. Regularly check all electrical devices connected to the equipment for stray currents caused by
improper grounding, damaged insulation or other defects. Corrosion: Pitting often occurs when
stray currents come in contact with moist stainless steel.
2. Never leave rubber mats, ttings, wrenches, etc. in contact with stainless steel. Corrosion: Pitting or galvanic action.
Objects retard complete drying, preventing air from reforming the protective oxide lm. Galvanic corrosion occurs when
two dissimilar metals touch when wet.
3. Immediately rinse equipment after use with warm water until the rinse water is clear. Clean the equipment (manual or
CIP) as soon as possible after rinsing. Corrosion: discoloration, deposits, pitting. Product deposits often cause pitting
beneath the particles.
4. Use only recommended cleaning compounds. Purchase chemicals from reputable and responsible chemical
manufacturers familiar with stainless steel processing equipment, they continuously check the effects of their products
on stainless steel.
5. Use cleaning chemicals exactly as specied by the manufacturer. Do not use excessive concentrations, temperatures
or exposure times. Corrosion: Pitting, discoloration, stress cracks. Permanent damage often occurs from excessive
chemical concentrations, temperatures or exposure times.
6. For manual cleaning, use only soft non-metallic brushes, sponges or pads. Brush with the grain on polished surfaces,
avoid scratching the surface. Corrosion: Pitting, scratches. Metal brushes or sponges will scratch the surface and
promote corrosion over a period of time. Metal particles allowed to remain on a stainless steel surface will cause pitting.
7. Use chemical bactericides exactly as prescribed by the chemical manufacturer in concurrence with local health
authority. Use the lowest permissible concentration, temperature and exposure time possible. Flush immediately after
bacterial treatment. In no case should the solution be in contact with stainless steel more then 20 minutes. Corrosion:
Protective lm destroyed. Chlorine and other halogen bactericides can destroy the protective lm. A few degrees
increase in temperature greatly increases chemical activity and accelerates corrosion.
8. Regularly inspect the joints in pipelines. Be sure all connections are tight tting without binding. Corrosion: Crevice
corrosion. Small crevices caused by improperly seated gaskets will promote crevice corrosion. Stainless steel under
stress will develop stress cracking especially in the presence of bactericides containing chlorine.
9. Regularly inspect equipment for surface corrosion (i.e. pitting deposits, stress cracks, etc.). If deposit or color corrosion
is detected, remove it immediately using mild scouring powder and detergents. Rinse thoroughly and allow to air dry.
Review production and cleaning procedures to determine the cause. Note: If corrosion is not removed, the protective
lm cannot be restored and corrosion will continue at an accelerated rate.
3Instruction & Operation Manual 800.789.1718
Introduction
This manual contains installation, operation, cleaning, repair instructions, model numbering structure and parts list for the
Bradford™ BC-Series centrifugal pumps.
The Bradford™ BC-Series centrifugal pump is made up of two sections, the pump components (uid end) and the motor
assembly. The pump is mounted on the drive motor with an adapter and is coupled to the motor with a stainless steel stub
shaft. The pump impeller is mounted on the stub shaft and is secured with a oating impeller retainer pin.
The casing is joined to the adapter by a heavy duty cast clamp. This design allows the volute outlet to be rotated to various
positions.
An adjustable leg kit is an option for mounting the drive motor and is designed to meet sanitary requirements. This
conguration simplies the installation and ease of leveling.
Part No. Description
P1 Casing
P2 Impeller
P6A Shaft Set Screws
P6E Stub Shaft
P11 'D' Back Plate
P11F Back Plate Pins*
P24 Impeller Retainer
P40 Deector
P71 Adapter
P71A Adapter Pins*
P75 Clamp Assembly
P80 Carbon Seal
P80A Seal Cup
P80B Seal O'Ring
P80C Spring
P80K Seat Screw
P80L Drive Collar
P90 Casing Gasket
P131 Guard Assembly
P207 Leg Kit
*not used on BC114/214 Models
4 Instruction & Operation Manual800.789.1718
Part No. Description
P11H 'DG' Back Plate
P17J Gland Ring
P17K Gland Bolt
P17M Washers
P80N Seal Seat
P80P Outboard Gasket
P80R Inboard Gasket
DG Seal
F Seal
Part No. Description
P5 'DG' Back Plate
Mechanical Specications
Standard Construction 1750 RPM
• Volute: 316L stainless steel
• Impeller: CF8M (316) stainless steel
• Backplate: 316L stainless steel
• Stub Shaft: 316L stainless steel
• Adapter: 304 stainless steel
• Optional Leg Kit: 304 stainless steel
• Seal Types: externally balanced 'D','DG', and 'F' with
clamped in seat
• Rotary Seal Material: carbon and silicon carbide
• 'DG' Seal Seat Material: silicon carbide, ceramic and
tungsten carbide
• Elastomers: Buna, EPDM, silicone and FKM
• Finish: sanitary polish 32RA
PUMP
Performance Characteristics
• Nominal Capacity: up to 780 GPM
• Temperature: 32°F to 212°F, consult factory for other
temperatures
• Nominal speed: up to 3500 RPM - 60 Hz
Motors and Mounting
• Motor: standard C-face, 1750 and 3450 RPM, TEFC and
washdown, foot mounted
• Additional motor types available upon request
• Mounting: pump head mounted to a C-Face motor
3500 RPM
5Instruction & Operation Manual 800.789.1718
Dimensions
All dimensions are given in inches
Pump
Model
BC114
BC216
BC218
&
BC328
* only applies to the BC328
Frame
Size
56C 3.63 1.63 18.00 3.00 7.00 10.60 6.22
140TC 3.63 1.63 18.20 4.00 7.00 10.80 6.22
180TC 3.63 1.63 18.80 4.50 8.00 11.00 6.78
56C 4.50 1.94 16.26 3.00 7.00 8.81 6.06
140TC 4.50 1.94 18.70 4.00 7.00 11.25 6.06
180TC 4.50 1.94 22.00 4.50 8.00 12.00 6.69
210TC 4.50 1.94 25.70 5.50 8.75 13.90 7.81
250TC 4.50 1.94 31.40 10.00 9.75 15.70 8.50
140TC 5.50
180TC 5.50
210TC 5.50
250TC 5.50
280TC 5.50
320TC 5.50
X Y CP E HDmax J L
1.94
2.25 *
1.94
2.25 *
1.94
2.25 *
1.94
2.25 *
1.94
2.25 *
1.94
2.25 *
18.50 4.00 7.00 11.10 6.31
22.50 4.50 8.00 12.00 6.94
26.30 5.50 8.75 14.50 7.31
31.20 10.00 9.75 15.50 8.19
33.80 11.00 10.50 15.60 8.81
36.70 12.00 11.50 17.90 9.69
6 Instruction & Operation Manual800.789.1718
Dimensions
All dimensions are given in inches
PUMP
Pump
Model
BC114 1.5
BC214 2
BC216 2
BC516 2.5
BC218 2
BC318 3
BC328 3
BC428 4
INLET OUTLET Z
Frame
Size
1.5 2.63
1.5 3.69
1.5 4.75
2 4.75
All dimensions are approximate;
for exact dimensions contact Dixon Sanitary
56C 5.53 0.87 4.85
140TC 5.53 0.87 5.50
180TC 7.00 0.87 7.50
210TC 7.62 0.87 8.50
250TC 10.80 2.05 10.00
280TSC 13.40 2.36 11.00
320TSC 14.37 2.36 12.50
AB
Conduit Entry
diameter
W
7Instruction & Operation Manual 800.789.1718
Installation
Unpacking
Carefully unpack all parts of the pump and inspect for damages that may have occurred during shipment. Report any
damages to the carrier immediately.
The ports on the pump are protected with a plastic cover. If any covers are missing or damaged, inspect the ports on the
pump thoroughly for any damage.
Tools Needed
If you have purchased a uid end and will be assembling the pump to a motor the following tools will most likely be used:
• Flat head screw driver
• Allen wrenches
• Open ended wrenches
• Feeler gauge
• Calipers
• Pliers
'D' Seal Pump Assembly
1. Install the adapter onto the motor using (4) bolts and (4) lock washers. Position
the adapter such that the threaded seal ush adapter hole is located on the top.
2. Install adapter pins by tapping the knurled end into the holes until ush with the
outside diameter of the adapter face.
3. Stub shaft alignment:
a. Make sure that the key is in the motor shaft, then slide stub shaft onto motor
shaft. Do not tighten set screws.
b. Set back plate on adapter face.
c. Slide impeller onto stub shaft end.
d. Using feeler gauge between back plate and impeller position stub shaft so
that the gap is equal to .060"
e. Tighten set screws on stub shaft.
f. Remove impeller and back plate.
4. Slide deector over shaft large end rst until it locks into position at the base of
the stub shaft.
± .010
. (see gure no.1)
• Rubber mallet
Figure No. 1
5. Slide drive collar large end rst over the stub shaft. Position collar and set
dimension 'A' to 0.6". (see gure no.2)
6. Tighten collar set screws.
a. Place seal spring over stub shaft and down onto the drive collar.
b. Place cup on top of the spring with slot lining up with extrusion on drive collar.
c. Place seal o-ring into the back of the carbon seal and slide the seal o-ring
assembly onto stub shaft, lining the notches in the carbon seal up with the
pins on the cup.
d. Check to make sure that slot in cup is still aligned with the extrusion in the
drive collar. (see gure no.3)
continued on next page ...
8 Instruction & Operation Manual800.789.1718
COLLAR
EXTRUSION
Figure No. 2
CUP
SLOT
Figure No. 3
Installation
'D' Seal Pump Assembly
... continued from previous page
7. Screw back plate pins into back plate. (see gure no.4)
8. Position casing gasket on circumference of the back plate.
9. Check that both the seal face on the back plate and the seal face of the carbon seal
are completely clean. Even the oils from your skin are not acceptable on these two
surfaces. Clean faces thoroughly with a clean, lint free cloth.
10. Assemble back plate to adapter.
a. Place the back plate assembly onto the adapter. Put even pressure down on the
back plate until it is completely seated on the adapter. (see gure no.5)
b. Check that the drive collar extrusion is fully engaged in the slot on the cup.
c. Rotate the back plate so that the back plate pins engage the adapter pins, holding
it in place.
d. With black plate depressed completely to the adapter, inspect the spring to
insure there is some space between the coils. If the coil is too tight, repeat step
5 and add 0.05" to dimension 'A' and re-check spring coil. Repeat if necessary.
PUMP
Figure No. 4
11. Install the impeller.
a. Insert the impeller retainer into the hole near the end of the stub shaft so that it is
centered in the shaft.
b. Slide the impeller onto the stub shaft.
c. Using a small hex key or screw driver push the impeller retainer so that it is
sticking out one end as far as it will allow, thus locking the impeller into place.
12. Close and seal the pump.
a. Place volute onto assembly with discharge outlet pointing in the desired position.
b. While applying sufcient pressure to bring adapter and volute together put on and
tighten clamp.
13. Attach and tighten guard assembly making sure that the seal ush tab on the adapter
lines up with the indent on the corresponding side of the guard.
Scan this code on
your smart phone to
visit the YouTube
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Click here to visit the YouTube
assembly video for D Seal
Pumps
assembly instructions
B
A
B
Figure No. 5
A
9Instruction & Operation Manual 800.789.1718
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