NBE BRAWN MIXER BTR 1 Series User manual

OPERATION
AND
MAINTENANCE
MANUAL
SERIAL NUMBER
___________________
CUSTOMER:____________________________
SALES REP.:____________________________
BTR S/1 SERIES

– THIS PAGE IS INTENTIONALLY LEFT BLANK –

4
51
6
3
2
*FOR REFERENCE ONLY*
7
ALTERNATE
CONSTRUCTION
OF SHAFT
MIXER SHAFT ASSEMBLY
1. PLACE THE KEY (ITEM 5) ON THE
MIXER SHAFT AND SLIDE THE MIXER
SHAFT INTO THE HOLLOW OUTPUT
SHAFT ON THE GEARDRIVE (ITEM 1).
2. PLACE THE THRUST WASHER (ITEM 6)
OVER THE HOLLOW OUTPUT SHAFT ON
THE TOP OF THE GEARDRIVE. APPLY
THREADLOCKER TO THE THREADS OF
THE HEX HEAD CAP SCREW (ITEM 3),
INSTALL IT THRU THE THRUST WASHER
AND INTO THE MIXER SHAFT. TORQUE
THE GRADE 5 HEX HEAD CAP SCREW
TO THE RECOMMENDED VALUE IN THE
O&M MANUAL.
3. ATTACH THE GUARD (ITEM 2) ON
THE TOP OF THE GEARDRIVE.
ALTERNATE SHAFT CONSTRUCTION:
ATTACH THE SHAFT COLLAR (ITEM 7)
TO THE MIXER SHAFT (ITEM 4) BEFORE
STEP 1.
* QUANTITY VARIES DEPENDING
ON SHAFT DESIGN.
BSB
* ALL DIMENSIONS AND WEIGHTS ARE FOR REFERENCE ONLY
UNLESS THE DRAWING IS CERTIFIED.
* ALL EQUIPMENT DESIGN AND APPLICATION DATA SHOWN
HEREIN IS CONFIDENTIAL AND THE PROPERTY OF BRAWN MIXER.
NO USE OR DISCLOSURE THEREOF MAY BE MADE WITHOUT OUR
WRITTEN PERMISSION.
REV.
DWG.
NO.
A-
MIXER MODEL
DRAWN BY:
DATE:
12838 Stainless Drive
Holland, MI 49424
PH: 616-399-5600
FAX: [phone]
TK0192
BTR SHAFT ASSEMBLY
10/29/2018
APPROVED BY:
DIMENSION AND ASSEMBLY DRAWING
©
DATE:
2018

BTR-SERIES OPERATION & MAINTENANCE MANUAL
12838 Stainless Drive, Holland, MI 49424 Phone: [phone] Fax [phone]
Copyright 2018 BRAWN Mixer www.BRAWNMIXER.com Page 1 of 9
11/27/2018
CONTENTS
Mixer Installation / Assembly / Dimension Drawings
Safety ............................................................................ 1
Customer Service Contact ............................................ 1
Initial Inspection.............................................................2
Installation ..................................................................... 2
Shaft and Impeller Assembly.........................................3
Start-Up......................................................................... 3
Electric Motors..........................................................4 - 7
Maintenance / Lubrication .......................................7 & 8
Storage.......................................................................... 8
Warranty........................................................................ 9
SAFETY
The precautions mentioned in this manual are not
intended to cover all hazards that may exist in a plant or
on this equipment. Using safety mechanisms requires
the constant attention of everyone in the vicinity of this
(or any) equipment.
A plant and the related equipment are only as safe as the
personnel are safety-minded. Proper equipment
maintenance and the use of personal safety devices will
contribute as much toward safety as will any number of
mechanical safety devices.
WARNING
To assure maximum safety, optimum performance,
and to gain knowledge of the product, it is essential
that you or any other operator of this equipment read
and understand the contents of this manual before
the mixer is operated.
Installation, operation and maintenance must be
performed only by qualified personnel.
Do not operate this equipment unless all safety
devices are installed and working properly. Check
all devices prior to starting the equipment.
Disconnect and lock out electrical power before
installing or servicing the mixer.
Do not touch rotating parts (keep all guards and
safety devices installed while operating).
Develop a safety checklist for this equipment and
perform regular maintenance to ensure continued
and proper operation. Develop a safety checklist for
this equipment and perform regular maintenance to
ensure continued and proper operation.
Do not make any field changes or modifications
without reviewing the change with your BRAWN
sales representative or the BRAWN Customer
Service Department.
CUSTOMER SERVICE
Mixer Model #.............................................BTR-SERIES
Mixer Serial #_________________________________
Contact:
Customer Service............................... 616/399-5600
E-Mail [e-mail]
BRAWN NAMEPLATE
You have received a quality engineered and
manufactured BRAWN Mixer. We value your business,
and we will strive to provide you with the proper service
and equipment to meet your needs.
The information contained in this BRAWN Mixer
Operator's Manual is designed to assist you in putting
your BRAWN Mixer into operation without further delay.
Please read the entire manual before attempting to
start your mixer. If you have any further questions or if,
by some chance, there are some missing components,
contact your BRAWN Mixer Representative or the factory
immediately.

BTR-SERIES OPERATION & MAINTENANCE MANUAL
12838 Stainless Drive, Holland, MI 49424 Phone: [phone] Fax [phone]
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CUSTOMER SERVICE, Cont.
We welcome your comments and suggestions
concerning any BRAWN Mixer product. Please direct
these comments in writing to the National Sales Manager
at BRAWN Mixer located in Holland, Michigan. To
expedite troubleshooting service, please make your initial
contact through your BRAWN Mixer Representative. If,
for whatever reason, your representative cannot be
reached and you have an emergency condition, please
call us directly at 616/399-5600 and ask for the
Customer Service Department.
Remember, you are backed by your BRAWN Mixer
Technical representative and the factory support team.
We are here to assist you; let us know how we can be of
help.
INITIAL INSPECTION
1. Upon receipt of your Brawn Mixer, check for possible
shipping damage. Report any damage immediately
to the carrier and to Brawn Mixer.
2. All Brawn Mixers are shipped with the shaft and
impeller(s) disassembled from the drive assembly.
In addition, the clamp or cup mount and any
mounting hardware for portable mixers are shipped
loose.
3. Storage: Mixers should not be stored near vibrating
machinery to avoid damage to the bearings. Store
mixers as packaged by the factory. For longer
storage periods, consult factory. If electric motors
have been subjected to humid conditions, check the
insulation resistance between phase and mass and
between the different phases. The resistance should
not be less than 100 megohms. If the resistance is
less, please consult the factory. If mixer is stored for
more than a year, the condition of the gear lubricant
should be checked before the mixer is put in
operation (see lubrication instructions).
INSTALLATION
[REFER TO ASSEMBLY / DIMENSION DRAWING]
Refer to the mixer installation / assembly drawing for
important mounting structure design, assembly,
mounting and dimensional data.
1. The mixer is shipped with two eyebolts located in the
mounting base. These should be used in
combination with the hole at the rear of the gear
drive for lifting of the mixer assembly.
2. Install the mixer drive on the mounting structure and
secure with properly-sized, Grade 5 or better
hardware. Torque the hardware as recommended in
TABLE 1.
3. Couple the mixer shaft to the gear drive output shaft
coupling and secure with the hardware provided.
Torque as recommended in TABLE 1. Refer to
precautions under the Shaft and Impeller
Assembly section.
4. Install impeller(s) on lower shaft (refer to Shaft and
Impeller Assembly section).
TABLE 1: RECOMMEND TORQUE VALUES
HARDWARE
SIZE
TORQUE VALUES (FOOT POUNDS)
STANDARD GRADE 2
& 300 SERIES
STAINLESS
HIGH STRENGTH
GRADES 5 & 8
3/8-16
17
27
7/16-14
27
40
1/2-13
40
65
9/16-12
65
90
5/8-11
85
125
3/4-10
135
225
7/8-9
145
365
1-8
210
545
BOLT-TIGHTENING RECOMMENDATIONS:
Inadequately or improperly tightened hardware can
loosen, due to vibration during mixer operation. This can
result in reduced mixer life or damage to equipment.
Recommended torque values for tightening all in-tank
and mounting hardware are listed in TABLE 1. These
average torque values should be considered only as a
guide and not as absolute values.

BTR-SERIES OPERATION & MAINTENANCE MANUAL
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SHAFT & IMPELLER ASSEMBLY
To install the impeller on the shaft, slide the impeller hub
over the mixer shaft, place the hook key in position,
lower the hub over the hook key and tighten the set
screw. The set screw must seat in the countersunk hole
in the hook key. Proper impeller mounting is illustrated in
FIGURE 1. If an axial flow impeller of bolt together
construction is used, blades should be bolted to the
bottom of the impeller hub ears as shown in FIGURE 2.
FIGURE 1: IMPELLER MOUNT WITH HOOK KEY
FIGURE 2: TYPICAL AXIAL FLOW
IMPELLER ASSEMBLY (A45 SHOWN)
START UP
1. All units are lubricated before shipment. The
lubricant level should be checked with the unit
mounted in its correct operating position. Lubricant
should be added or removed to bring it to the correct
level. The catalog for the gear unit shows the oil level
for various mounting positions.
2. Connect the motor in accordance with the motor
nameplate. The motor starter should incorporate
overload protection. Before operating the mixer, jog
the motor and observe mixer shaft rotation. Proper
rotation is clockwise, as viewed from the top, unless
otherwise noted.
3. Check all bolts and fasteners for tightness. It is good
maintenance practice to recheck all bolts after two
weeks of operation and periodically thereafter. Refer
to TABLE 1 for recommended torque values.
4. Do not attempt to start mixer with impellers buried in
solids or solidified liquids.
CAUTION
Do not operate mixer with the tank empty or the lowest
impeller submerged with less than ½ of the impeller
diameter of liquid above it. Damage to the mixer and/or
mounting structure may result.

BTR-SERIES OPERATION & MAINTENANCE MANUAL
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11/27/2018
ELECTRIC MOTORS
This equipment contains HAZARDOUS VOLTAGES,
ROTATING PARTS AND HOT SURFACES. SEVERE
PERSONAL INJURY OR PROPERTY DAMAGE CAN
RESULT IF SAFETY INSTRUCTIONS ARE NOT
FOLLOWED. Only qualified personnel should work on or
around this equipment after becoming thoroughly familiar
with all warnings, safety notices, and maintenance
procedures contained herein. The successful and safe
operation of this equipment is dependant upon proper
handling, installation, operation and maintenance.
WARNING
Explosion-proof motors-these motors are constructed to
comply with the U.L. Label Service Procedure Manual.
When repairing and reassembling a motor that has an
underwriter’s label, it is imperative that the unit be
reinspected and:
1. All original fits and tolerance be maintained.
2. All plugs and hardware be securely fastened.
3. Any parts replacements, including hardware, be
accurate duplicates of the originals.
Repair work on explosion-proof motors can only be done
by the original manufacturing or U.L. certified shops.
Violations of any of the above items will invalidate the
significance of the U.L. Label.
STORAGE
Motors must be stored in a clean, dry, well ventilated
location free from vibration and rapid or wide
temperature variations. If the unit is to be stored longer
than three months, consult factory. Ball bearing motors
are shipped from the factory properly lubricated and
ready to operate. When in storage, the motor shaft must
be turned several rotations every month and bearings
relubricated every year. On non-explosion-proof TEFC
motors, a removable plug in the bottom of the frame or
housing permits removal of accumulated moisture. Drain
regularly if storage atmosphere results in formation of
condensation.
INSTALLATION
Installation must be handled by qualified service or
maintenance personal.
OPERATION
CAUTION
Repeated trial starts can overheat the motor and may
result in motor burnout. If repeated trial starts are made,
allow sufficient time between trials to permit heat to
dissipate from windings and rotor to prevent overheating.
Starting currents are several times running currents, and
heating varies as the square of the current.
After installation is completed, but before motor is put in
regular service, make an initial start as follows:
1. Check motor starting and control device
connections against wiring diagrams.
2. Check voltage, phase, and frequency of line circuit
(power supply) against motor nameplate.
3. If possible, remove external load (disconnect drive)
and turn shaft by hand to ensure free rotation. This
may have been done during installation procedure;
if so, and conditions have not changed since, this
check may not be necessary.
a. If drive is disconnected, run motor at no load
long enough to be certain that no unusual
conditions develop. Listen and feel for
excessive noise, vibration, clicking, or
pounding. If present, stop motor immediately.
Investigate the cause and correct before
putting motor in service.
b. If drive is not disconnected, interrupt the
starting cycle after motor has accelerated to
low speed. Carefully observe for unusual
conditions as motor coasts to a stop.
4. When checks are satisfactory, operate at minimum
load and look for unusual condition. Increase load
slowly to maximum. Check unit for satisfactory
operation.
CAUTION
Guard against overloading. Overloading causes
overheating and overheating means shortened insulation
life. A motor subjected to a 10°C temperature rise above
the maximum limit for the insulation may cause the
insulation life to be reduced by 50%. To avoid
overloading, be sure motor current does not exceed
nameplate current when nameplate voltage is applied.

BTR-SERIES OPERATION & MAINTENANCE MANUAL
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ELECTRIC MOTORS, Cont.
Electric motors operating under normal conditions
become quite warm. Although some places may feel hot
to the touch, the unit may be operational within limits.
Use a thermocouple to measure winding temperature.
The total temperature, not the temperature rise, is the
measure of safe operation. Investigate the operating
conditions if the total temperature measured by a
thermocouple placed on the windings exceeds:
230°F (110°C) for class “B” insulation
275°F (135°C) for class “F” insulation
302°F (150°C) for class “H” insulation
VOLTAGE REGULATION
Motors will operate successfully under the following
conditions of voltage and frequency variation, but not
necessarily in accordance with the standard established
for operation under rated conditions:
1. When the variation in voltage does not exceed
10% above or below normal, with all phases
balanced.
2. When the variation in frequency does not exceed
5% above or below normal.
3. When the sum of the voltage and frequency of the
voltage does not exceed 10% above or below
normal (provided the frequency variation does not
exceed 5%).
MAINTENANCE
Failure to properly maintain the equipment can result in
severe personal injury and product failure. The
instructions contained herein should be carefully
reviewed, understood and followed. The following
maintenance procedures should be performed regularly:
1. Bearing lubrication
2. Insulation resistance check
3. Cleaning
This checklist does not represent an exhaustive survey
of maintenance steps necessary to ensure safe
operation of the equipment. Particular applications may
require further procedures
Dangerous voltages are present in the equipment which
can cause severe personal injury and product failure.
Always de-energize and ground the equipment before
maintenance. Maintenance should be performed only by
qualified personal.
The use of unauthorized parts in the repair of the
equipment, tampering by unqualified personal, or
removal or alteration of guards or conduit covers will
result in dangerous conditions which can cause severe
personal injury or equipment damage. Follow all safety
instructions contained herein.
BEARING LUBRICATION
CAUTION
Do not lubricate motor while in operation, since excess
grease will be forced through the bearings and into the
motor before it will force its way out the drain plug.
Excess grease accumulation on windings reduces
insulation life.
Prior to shipment, motor bearings are lubricated with the
proper amount and grade to provide six months of
satisfactory service under normal operation and
conditions.
For best results, grease should be compounded from a
polyurea base and a good grade of petroleum oil. It
should be of No. 2 consistency and stabilized against
oxidation. Operating temperature ranges should be from
-15°F to +250°F for class B insulation, and to +300°F for
class F and H. Most leading oil companies have special
bearing greases that are satisfactory.
Relubricate bearings every six months (more often if
conditions require), as follows:
1. Stop the motor. Lock out the switch.
2. Thoroughly clean off pipe plugs and remove
from housings.
3. Remove hardened grease from drains with stiff
wire or rod.
4. Add grease to inlet with hand gun until small
amount of new grease is forced out drain.
5. Remove excess grease from ports, replace inlet
plugs, and run motor ½ hour before replacing
drain plug.
6. Put motor back in operation.

BTR-SERIES OPERATION & MAINTENANCE MANUAL
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ELECTRIC MOTORS, Cont.
INSULATION RESISTANCE
Check insulation resistance periodically. Any approved
method of measuring insulation resistance may be used,
provided the voltage across the insulation is at a safe
value for the type and condition of the insulation. A hand
crank megger of not over 500 volts is the most
convenient and safest method. Standards of the Institute
of Electrical and Electronics Engineers, Inc., recommend
that the insulation resistance of the stator windings at 75°
C, measured at 500 volts dc, after one minute should not
be less than:
Rated Voltage of Machine + 1000
=
Insulation Resistance
1000
in Megohms
This formula is satisfactory for most checks. For more
information, see IEEE Standard No. 43 “Recommended
Practice for Insulation Resistance Testing of AC Rotating
Machinery.”
CLEANING
WARNING
Do not attempt to clean the motor while it is operating.
Contact with rotating parts can cause severe personal
injury or property damage. Stop the motor and lock out
switch before cleaning.
The motor exterior must be kept free of oil, dust, water,
and chemicals. For fan cooled motors, it is particularly
important to keep the air intake openings free of foreign
material. Do not block air outlet or inlet.
On non-explosion-proof TEFC motors, a removable plug
in the bottom center of the motor frame or housing
permits removal of accumulated moisture. Drain
regularly.
MAINTENANCE / LUBRICATION
Gear units should have the oil changed every 10,000
hours or 2 years. If synthetic lubricant is used, it should
be changed every 20,000 hours or 4 years. For adverse
operating conditions, the interval should be shorter. DO
NOT MIX SYNTHETIC AND MINERAL BASE OILS.
Units should be checked periodically for increased noise,
surface temperature, vibration, shaft movement and
amperage draw. Units with inspection covers should not
be operated with the inspection cover removed.
CAUTION
Oil should be changed more often if reducer is used in a
severe environment. (i.e. dusty, humid)
All reducers are shipped from the factory properly filled
with lubricant and all plugs are installed according to the
mounting position given on the reducer nametag.
Acceptable oil level is within ½ inch of the bottom of the
fill plug threads. Consult the sticker adjacent to the fill
plug to determine the type of lubricant installed at the
factory. Standard lubricant is ISO VG220 mineral-based
oil. However, some units have special lubricants
designed to operate in certain environments or to extend
the service life of the lubricant. If in doubt about which
lubricant is needed, contact Brawn.
TABLES 2 and 3offer suggestions on the viscosity and
manufacturers of recommended lubricants.
CAUTION
In the Food and Drug Industry (including animal food),
consult the lubrication supplier for recommendation of
lubricants which are acceptable to the Food and Drug
Administration and/or other authoritative bodies having
jurisdiction. Factory supplied oil is not suitable for these
applications or this industry.

BTR-SERIES OPERATION & MAINTENANCE MANUAL
12838 Stainless Drive, Holland, MI 49424 Phone: [phone] Fax [phone]
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11/27/2018
MAINTENANCE / LUBRICATION,
Cont.
TABLE 2: APPROXIMATE OIL CAPACITY (QTS)
FOR GEAR DRIVES
CASE SIZE
OIL CAPACITY
9022
2.43
9032
3.49
9042
6.87
9052
12.2
9062
20.1
9072
20.1
9082
40.2
AUTOVENT PLUG: The Autovent plug (FIGURE 3) is
brass in color and will be located at the highest point on
the gearbox. It operates like a check-valve to allow the
reducer to relieve internal pressure while preventing
lubricant contamination during cooling. A spring presses
a ball or plunger against a machined orifice until
pressure exceeds 2 psi. Above 2 psi, the air is allowed to
escape depressurizing the gearcase. When internal
pressure drops below 2 psi, the autovent re-seals closing
the unit to the outside environment. After shutdown the
reducer cools along with the air inside the reducer. The
unit will temporarily maintain a slight vacuum until
normalization occurs.
FIGURE 3: THE AUTOVENT RELEASES BUILT-UP
AIR PRESSURE FROM INSIDE THE GEARBOX (MAX.
PRESSURE 2PSI).
FILL LEVEL & DRAIN PLUGS:The drain plugs
(FIGURE 4) are metric socket head cap screws. They
will be located at the lowest part of the gearbox for ease
of draining. The fill level plug is a hex head cap screw. It
will be located between the Autovent and the drain plug.
Both types of plugs will have gaskets included to prevent
oil from leaking.
FIGURE 4: TWO TYPES OF PLUGS FOR
MAINTENANCE

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TABLE 3: RECOMMENDED LUBRICANTS
Ambient
Temperature (F)
Formulation
Oil
Manufacturer
Oil Brand Name
20° to 104° Mineral Texaco Meropa 220
20° to 104° Mineral Shell Omala EP 220
Ambient
Temperature (F)
Formulation
Oil
Manufacturer
Oil Brand Name
14° to 176° Synthetic Texaco Pinnacle EP680
14° to 176° Synthetic Shell Omala HD 680
-13° to 140° Synthetic Texaco Pinnacle EP220
-13° to 140° Synthetic Shell Omala HD 220
-40° to 50° Synthetic Texaco Pinnacle EP32
-40° to 50° Synthetic Shell Omala HD 32
20° to 104° Food Grade Chevron FM ISO 220
20° to 104° Synthetic Food Grade OilJAX Magnaplate 85W140-FG
5° to 125° Fluid Grease Mobil Mobilux EP023
-30° to 140° Synthetic Fluid Grease Mobil Mobilith SHC 007
-30° to 140° Synthetic Fluid Grease Shell Tivela Compound A
Ambient
Temperature (F)
Formulation
Grease
Manufacturer
Grease Brand Name
-20° to 140° Mineral Texaco Multifak EP2
-20° to 140° Mineral Shell Cypernia RA/C3
Ambient
Temperature (F)
Formulation
Grease
Manufacturer
Grease Brand Name
-58° to 230° Synthetic Texaco Starfak 2202
-58° to 230° Synthetic Shell Aero Shell
5° to 230° Food Grade Lubriplate SIF 1
STANDARD OIL - ISO VG220
OPTIONAL LUBRICANTS
STANDARD BREARING GREASE - NL GI 2EP lithium
OPTIONAL BEARING GREASE
STORAGE
Units shipped from Brawn Mixer are intended to be used within 30 days after receipt and presumed to be stored indoors in
a heated building. Store mixers as packaged by the factory. If you intend storing units under adverse conditions or for a
long period of time, special storage precautions will be necessary.
1. Store in a sheltered area away from chemical vapors or steam.
2. Cover.
3. Do not store in sunlight or near high heat.
4. Spray oil on exposed shafts and seals. Remove oil on start-up.
5. Rotate output shaft 360º every 3-4 weeks.
6. Mixers should not be stored near vibrating machinery to avoid damage to the bearings.
7. If electric motors have been subjected to humid conditions, check the insulation resistance between phase and mass
and between the different phases. The resistance should not be less than 100 megohms. If the resistance is less,
please consult the facto

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WARRANTY
WARRANTY: All equipment or parts covered by this
manual are guaranteed free from defective material and
workmanship for a period of twelve (12) months from
date of shipment, under normal use and service. This
warranty does not cover failure of normal wear parts
unless the failure of such part has resulted from
defective material and workmanship. BRAWN Mixer will
repair or replace, at its option, any equipment which has
been found to be defective and is within the warranty
period, provided that the equipment is shipped, with
previous factory authorization, freight prepaid, to
BRAWN's plant in Holland, Michigan, USA. All return
shipments are made FOB BRAWN's factory. BRAWN is
not responsible for removal, installation, or any other
incidental expenses incurred in shipping the equipment
to or from BRAWN. In the case of components
purchased by BRAWN Mixer and incorporated in the
equipment, the component manufacturer's guarantee
shall apply. NOTE: Any modifications or corrective work
done to the equipment which were not specifically
authorized in writing by BRAWN Mixer shall void this
limited warranty, and BRAWN Mixer shall accept no
liability for any of the corrective work or expenditures
which were conducted without their prior, written
authorization. BRAWN Mixer shall not be held liable for
any further cost, expense, or labor to replace equipment
or replaceable parts, or indirect or consequential
damages.
With the exceptions of the limited warranty set out
above, there are no other understandings, agreements,
representatives, or warranties implied (including any
regarding the merchant-ability or fitness for a particular
purpose), not specified herein, respecting this agreement
or equipment, hereunder. This contract states the entire
obligation of BRAWN Mixer in connection with this
transaction.
SHOULD WE MAKE A MISTAKE...
BRAWN Mixer's
Direct Returns Policy
To ensure proper handling of your return, please take a
moment to read the following:
ALL returns require a RETURN GOODS
AUTHORIZATION (RGA) NUMBER. We are unable
to process your return or issue proper credit without
an approved RGA number.
ALL returns must be COMPLETE, including all
original warranties, manuals, documentation and
packaging.
ALL product must be received within 14 days of
issuing an RGA number.
How to Return Product
You must have a RETURN GOODS AUTHORIZATION
(RGA) number before you return any product to BRAWN
Mixer. To obtain this number, call 616/399-5600 and ask
for Customer Service. Be sure to have available the
following information:
your order number
the BRAWN product serial number
the part number and description of the product
the reason for the return
♦I M P O R T A N T ♦
The Return Goods Authorization number must be written
clearly on all boxes being returned. C.O.D. shipments will
not be accepted.

SEAL INSTALLATION & MAINTENANCE
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2/5/2018
MECHANICAL SEAL
MAINTENANCE
Although mechanical seals, when properly installed,
require minimal maintenance, periodic inspection should
be performed to help identify and avert a potential failure.
The following procedures are recommended:
1. Establish a daily routine of inspecting all equipment.
2. For lubricated seals, check for adequate seal
lubricant in reservoir.
3. For double mechanical seals, check seal chamber
pressure source (nitrogen bottle, etc.) for proper
pressure (20 PSIG above tank pressure) and for
adequate supply.
4. Observe mixer shaft when operating for excessive
deflection. Shaft deflection (or run-out) at the top of
the seal must not exceed .075" T.I.R. maximum.
Run-outs exceeding this limit are an indication of
mechanical or process problems (bent shaft, high
inlet flow impinging directly on impeller, etc.) and not
only will destroy the mechanical seal, but may
damage other components of the mixer and tank.
5. Observe for signs of leakage around seal. Excessive
leakage is an indication of seal face wear, improper
installation, excessive shaft deflection, etc. If the seal
has provided a relatively long service life, wear is
probably the cause and indicates that repair or
replacement of the seal is in order.
6. When mixer is not operating, check seal drive collar
set screws, stationary insert retainer cap screws and
mixer shaft coupling hardware for proper tightness.
Also check for excessive clearances in the mixer
shaft support bearings. This can be detrimental, not
only to the mechanical seal, but also to the mixer
final drive gearing.
MECHANICAL SEAL REPAIR
Mechanical seals are precision-manufactured, and
effective sealing is dependent upon maintaining this
precision. Therefore, if the proper equipment for repair
of the seal is not available, it is recommended the seal
be returned to the factory for repair.
The following points apply to virtually all mechanical
seals:
1. Read and follow the seal manufacturer’s instructions.
2. Cleanliness of all seal components, especially the
mating faces of seal ring and stationary insert, is of
utmost importance.
3. Check the rotating seal components for excessive
wear and to be certain the drive pins and springs are
free in the pin holes or slots. Replace all worn or
damaged components.
4. Install new set screws and make sure they are free
in their threads to turn and seat properly.
5. Install new O-rings and shaft packing.
6. Seal rings and stationary inserts are delicate and
require special handling. Careless handling of these
components can result in irreparable damage such
as fracture, chipping, scratches, etc.
7. Sealing faces are lapped surfaces and must be flat
to within three (3) light bands for effective sealing. If
lapping and inspection equipment is not available,
return seal assembly to the factory for repair. A used
seal face should not be mated with a new face.
8. Before re-installation of the seal, check the mixer
shaft support bearings for excessive axial clearance
(.005" maximum) and radial clearance (.001
maximum). Also check the output shaft face for
excessive run-out (.003" maximum). Correct any
deficiencies.
9. Visually inspect the mixer shaft for damage as
indicated by nicks, scratches, dents, wear, etc. Shaft
surface finish must be 32 RMS or better. Also
inspect seal flange mounting surface for damage.
Correct any deficiencies.

SEAL INSTALLATION & MAINTENANCE
12838 Stainless Drive, Holland, MI 49424 Phone: [phone] Fax [phone]
Copyright 2018 BRAWN Mixer www.BRAWNMIXER.com Page 2 of 2
2/5/2018
MECHANICAL SEAL REPAIR,
Continued
10. Remove any burrs or sharp edges (such as along a
keyway) that the seal must pass over to prevent
damage to the shaft packing. When installing the
seal, provide protection for the shaft packing from
cuts by covering keyways and holes with a sleeve or
Scotch tape. Lubricate the shaft and shaft packing
with a lubricant compatible with the tank contents.
11. Before installing the seal, insure that all seal
components and mating surfaces are clean and free
from dirt, deposits, old gaskets, etc.
12. Refer to the seal manufacturer’s instructions for
proper seal installation and seal setting procedure.
13. After seal installation and before start-up, check all
shaft hardware, seal mounting hardware and drive
collar set screws for proper tightness. Checks for
shaft run-out at the top of the seal while rotating the
mixer shaft by hand (rotate gear drive input shaft
while observing a dial indicator mounted to indicate
run-out at the seal). Shaft run-out at the seal must
not exceed .005" T.I.R. when rotated by hand.
14. For lubricated seals, connect all flushing lines, purge
lines, etc. and fill and bleed the seal cavity with clean
lubricant before starting mixer.
15. Pressurize the seal cavity (double seal only) to 20
PSIG above tank operating pressure.
MECHANICAL SEAL
INSTALLATION
1. Install mixer on tank nozzle with all bolts thru
mounting flange and tighten to recommended torque
specifications.
2. Insert mixer shaft from inside tank up thru opening in
flange and safely support in place.
3. Install all seal parts over the end of the shaft in the
proper order and the proper orientation while
protecting the seal faces from any contact. Let the
disassembled seal parts sit loosely until steps 4 thru
8 are complete.
4. Attach removable coupling on top end of shaft with
key, thrust washer, and thrust bolt(s). Tighten and
check torque to recommended specifications.
5. Align shaft coupling with rigid drive coupling and
secure with bolts (8).
6. Tighten and torque all bolts to recommended
specifications.
7. Remove all shaft supports used for support such that
the shaft is freely hanging.
8. Install impellers and/or hubs on to the shaft at this
time.
9. Position the stationary seat of the seal in the pilot
and secure with the gland ring. Assemble the rest of
the seal as indicated in the following drawing. Also,
follow all instructions in the seal manufacturer’s
assembly pages given at the end of this manual.

BIM 1009/2007/09 Page 1 of 8 www.nord.com
WARNING:
LOCK OUT POWER before
any maintenance is
performed. Make absolutely
sure that no voltage is
applied while work is being
done on the gearbox.
NEMA/ IEC Motor Adapters
NORD Gear supplies a coupling that is to be mounted onto the motor shaft. It is important that the coupling is properly
positioned. For NEMA Input Adapters, follow the Motor Installation Instructions below to insure full coupling engagement
onto the input shaft. For IEC Input Adapters, the supplied coupling will mount directly against the motor shaft shoulder.
No locating measurements need to be taken. NOTE: Some of the larger IEC inputs will have a coupling spacer included to
help locate the coupling. Slide the spacer against the motor shaft shoulder, slide the coupling against the spacer and tighten set screw(s).
For the larger motor adapters (IEC160 / N250TC and larger), an Automatic Lubricator is supplied. This will need to be activated at the
time of startup. For operation and activation instructions, refer to the “Automatic Lubricator“ section.
NORD supplies three different types of couplings depending on the size of input: “J” style, “M” style and “Jaw” style coupling. Following are
instructions on how to properly mount each type of coupling onto the motor. First, identify which coupling has been supplied to you by
referring to the “Couplings for the NEMA and IEC Adapters” section on the next page. Make sure the motor flange and shaft are cleaned and
verify that the proper key is in the motor shaft.
“J” Style Coupling
NEMA C-face Motor Installation Instructions
1. Measure the distance from the face of the input adapter to
the face of the splined shaft and record that measurement as
A in the equation below.
2. Measure depth of coupling engagement zone and record the
measurement as “B” in the equation below.
3. Add “A” + “B” and subtract 0.08” (~2mm) from the
distance. This needs to be done so that the coupling will
not be preloaded after installation!
4. Use that measurement to locate the coupling from the face
of the motor onto the shaft.
5. Once in place, tighten the set screw to lock the coupling in
place. It is recommended that the key is staked or bonded
(Loctite) in place to prohibit the key from vibrating out.
6. Mount the motor onto the input adapter with customer
supplied bolts. Make sure that the coupling from the adapter
and the motor engage securely. Use lock washers or Loctite
to prohibit bolts from becoming loose from vibration.
“M” Style Coupling
NEMA C-face Motor Installation Instructions
1. Measure the distance from the face of the input adapter to
the face of the splined shaft and record that measurement.
2. Subtract
0.31” (~8mm) from the distance. This needs to
be done so that the coupling will not be preloaded after
installation!
3. Use that measurement to locate the coupling from the face
of the motor onto the shaft.
4. Once in place, tighten the set screw to lock the coupling in
place. It is recommended that the key is staked or bonded
(Loctite) in place to prohibit the key from vibrating out.
5. Mount the motor onto the input adapter with customer
supplied bolts. Make sure that the coupling from the adapter
and the motor engage securely. Use lock washers or Loctite
to prohibit bolts from becoming loose from vibration.
BIM 1009
NORD Gearbox Inputs
Installation and Maintenance Instructions
Retain These Safety Instructions For Future Use CDN
USA
W-STYLE SUGAR SCOOPNEMA/IEC MOTOR MOUNT
PLATFORM
SET SCREW
TIGHTEN
DISTANCE
PLACEMENT
COUPLING
DISTANCE
SUBTRACT
DISTANCE
COUPLING PLACEMENT
- 0.080" (2mm) =
C-FACE MOTOR
DISTANCES
MEASURED
A
B
A + B
+
SUBTRACT
DISTANCE
- 0.310" (8mm) =
DISTANCE
COUPLING PLACEMENT
C-FACE MOTOR
MEASURED
DISTANCE
COUPLING
PLACEMENT
DISTANCE
TIGHTEN
SET SCREW

BIM 1009/2007/09 Page 2 of 8 www.nord.com
Couplings for the NEMA and IEC Adapters
Depending on the size of the input adapter to the gearbox, NORD Gear supplies two styles of couplings - BoWex(gear tooth) and Rotex
(jaw) couplings.
BoWex

Couplings
NORD C-face adapter input shafts have a machined spline on the end. NORD incorporates two styles of BoWexcouplings, the “J” and “M”
styles. The “J” style is a one-piece coupling with a metal hub and nylon spline. The “M” style is a two-piece coupling – the metal hub and a
nylon sleeve. Nylon and steel components allow them to operate in high ambient temperatures without lubrication or maintenance.
xNylon sleeves resist dirt, moisture, most chemicals and petroleum products
xNo lubrication required
xOperating Conditions: -22qF - 195qF (-30qC - 90qC)
xHigher temperature coupling sleeve available up to 250qF (120qC)
xSpecial bore available
BoWex

Mechanical Ratings
“J” Style “M” Style
Coupling
Type
Available
Bore Sizes
Cont. / Peak
Torque Input Coupling
Type
Available
Bore Sizes
Cont. / Peak
Torque Input
J14 11, 14 mm
5/8 in.
10 / 20 Nm
89 / 177 lb-in
IEC 63, 71
NEMA 56C M14/M24/M28 Same as
“J” style
Same as
“J” style
Same as
“J” style
J24 19, 24 mm
5/8, 7/8 in
20 / 40 Nm
177 / 354 lb-in
IEC 80, 90
NEMA 56C,140TC M38 38 mm
1-1/8, 1-3/8 in.
80 / 160 Nm
708 / 1,416 lb-in
IEC 132
NEMA 180TC,
210TC
J28 28mm
1-1/8 in
45 / 90 Nm
399 / 797 lb-in
IEC 100, 112
NEMA 180TC M42 42 mm
1-5/8 in
100 / 200 Nm
885 / 1,770 lb-in
IEC 160
NEMA 250TC
M48 48 mm
1-7/8 in
140 / 280 Nm
1240 / 2,478 lb-in
IEC 180
NEMA 280TC
Rotex

Couplings
The cast iron jaw type couplings have an integral urethane “spider” that
provides smooth transmission of the motor torque. A set screw on the
coupling prohibits axial movement along the motor shaft.
xExcellent shock and vibration dampening
xExcellent resistance to oils and most chemicals
xNo metal-to-metal contact
xOperating Conditions: -40qF - 195qF (-40qC - 90qC)
xHigher temperature material (Hytrel) spider available up to 230qF
(110qC)
xSpecial bores available
Hub Design 1 Spider Hub Design 1a
Rotex

Mechanical Ratings
Coupling
Type
Available
Bore Sizes
Continuous / Peak
Torque Inputs Used With Spider
R19 14, 19 mm 17 / 34 Nm
150 / 300 lb-in SEK/SEP 100
R24 19, 24 mm 60 / 120 Nm
530 / 1,060 lb-in SEK/SEP 100, 130
Urethane
98 Shore A Hardness
Color: Red
R28 32, 38 mm 95 / 190 Nm
840 / 1,680 lb-in SEK/SEP 165, 215
R38 1.89” (48mm)
Max Bore
190 / 382 Nm
1,680 / 3,380 lb-in -
R42 2.44” (62mm)
Max Bore
310 / 620 Nm
2,740 / 5,480 lb-in -
R48 42, 48 mm
1-5/8, 1-7/8 in
310 / 620 Nm
2,740 / 5,485 lb-in
IEC 160, 180
NEMA 250T, 280T
SEK/SEP 300, 215
R65 60 mm
2-1/8, 2-3/8 in
625 / 1,250 Nm
5,530 / 11,060 lb-in
IEC 225
NEMA 320T, 360T
R90 65, 75, 80 mm
2-1/8, 2-3/8 in
2,400 / 4,800 Nm
21,240 / 42,480 lb-in
IEC 250, 280, 315
NEMA 360T, 400TS, 440TS
Urethane
92 Shore A Hardness
Color: Yellow

BIM 1009/2007/09 Page 3 of 8 www.nord.com
Jaw” Style Coupling
NEMA C-face Installation Instructions
1. Measure the distance from the face of the input adapter to the
face of the coupling as shown and record that measurement.
2. Subtract the “X” dimension from the measured distance.
This needs to be done so that the coupling will not be
preloaded after installation!
3. Use that measurement to locate the coupling from the face of
the motor onto the shaft.
4. The metal portion of the coupling should be heated up prior to
assembly, generally 250qF to 300qF (120qC to 150qC).
*DO NOT HEAT THE URETHANE SPIDER.
5. Once in place, tighten the setscrew to lock coupling in place.
Let the coupling cool down before placing the spider into the
jaws. It is recommended that the key is staked or bonded
(Loctite) in place to prohibit the key from vibrating out.
6. Mount the motor onto the input adapter with customer
supplied bolts. Make sure that the coupling from the adapter
and the motor engage securely. Use lock washers or Loctite
to prohibit bolts from becoming loose from vibration.
Automatic Lubricator
NORD Gear supplies the larger C-face motor adapters with an Automatic Lubricator. This will provide
additional grease lubrication to the outboard bearing. As the pressure from the lubricator canistor pushes
the new grease into the bearing, the old grease will flow into the cavity towards the gearbox. When the
cavity is filled with the "used" grease, the pressure from the new grease pushes the used grease into the
gear box thru the input seal. The old grease mixes with the oil but will not cause harm to the gearing or
bearings. Regular oil changes with the gearbox will remove the old grease which has been pushed into
the gearbox. Refer to the PARTS LISTS for inputs equipped with the Automatic Lubricator.
Principle of Operation
After tightening the plastic activating screw, the Zinc-Molybdenum pellet drops into the Citric
Acid electrolyte. The chemical reaction builds up pressure that causes the piston to move
forward. The lubricant is continuously injected into the lubrication point. At the end of the
lubrication period, the discharge indicator cap becomes clearly visible indicating the lubricant
has been fully discharged. The lubrication period is determined and defined by the color of the
activating screw.
For the bearings used in NORD Gear products, a 12-month lubrication period is standard,
indicated by a gray activating screw. This applies for an average operating time of 8
hours/day. For longer operating times, the replacement interval decreases to 6 months.
Lubrication canisters are also available for cold temperature applications. Contact NORD Gear
for more information.
Assembly Instructions
1. Remove the plug from the male connecting thread.
2. Screw male fitting into bearing housing within Input Adapter.
3. Insert activating screw into end of canister. Tighten until the ring-eyelet breaks off.
4. Replace every twelve months.
Perma Classic Specifications
Standard Lubricant Klüber Petamo GHY 133 (synthetic)
NORD Part Number 28301000
Lubricant Volume 120 mL (4 oz.)
Operating Temperature Rangeº-30qC to 150qC (-22qF to 302qF)
Discharge Time 12 months at 25qC (77qF)
Operating Position Independent of mounting position, operates even
under water.
Male Connecting Thread 1/4” NPT
ºThe temperature range shown is for the Perma Classic Lubricator only and does
not apply to other components and/or lubricants within the gear reducer.
Coupling
Size
“X”
(Subtract this value from measured distance)
R14 0.06” (1.5mm)
R19 & R24 0.08” (2.0mm)
R28 0.10” (2.5mm)
R38/42 0.12” (3.0mm)
R48 0.14” (3.5mm)
R65 0.18” (4.5mm)
R90 0.22” (5.5mm)
SPIDER
URETHANE
SUBTRACT
DISTANCE
COUPLING
PLACEMENT
DISTANCE
DISTANCE
COUPLING PLACEMENT
- "X" (see table) =
C-FACE MOTOR
DISTANCE
MEASURED
SET SCREW
TIGHTEN

BIM 1009/2007/09 Page 4 of 8 www.nord.com
Figure 1. Mounting a coupling or a sprocket
on a shaft.
MK Motor Mount Platform
For proper installation of the belt drive, consult the V-belts
manufacturer. NORD MK motor mounts are adjustable in
two ways. Slotted holes are provided at the input cylinder
for the initial height adjustment. There are two fine
adjustments at the Yolk to increase/decrease tension.
Two Spanner head wrenches will be needed to
tighten/loosen the fine adjustments. The four bolts
holding the motor platform to the input cylinder must be
loosened in order to use the fine adjustments.
The motor mounting platform has tapped holes to accept the foot pattern of the
standard footed NEMA or IEC motor. All MK mounting input shaft diameters
are metric.
Align the sheaves or sprockets square and paraIIeI by placing a straight edge across their faces. Alignment of bushed sheaves and sprockets
should be checked after bushings have been tightened. Check horizontal shaft alignment by placing a IeveI vertically against the face of the
sheave or sprocket. Adjust beIt or chain tension per the manufacturer’s specified procedure. After a period of operation, recheck alignment
and adjust as required.
Solid Shaft (W-Type)
The shaft will be inch or metric, depending on how the unit was
ordered. Measure and verify the shaft before mounting anything
on the shaft. Below are the tolerances used for the solid shafts.
All solid input shafts have a tapped hole on the end for customer
use. The chart below indicated the tap size for each shaft. Keys
are also supplied with solid shaft.
Outboard pinion and sprocket fits should be as recommended by the manufacturer.
The components should be heated according to the manufacturer’s
recommendations, generaIIy 250qF to 300qF, (120qC to 150qC) before assembling to
the shaft. The coupling hub or sprocket should be mounted per Figure 1.
On larger gearboxes, there is grease fitting on the W-Type inputs to grease the
outboard bearing. About 0.75 ounce (20 - 25g) of synthetic grease should be added
every 1,000 service hours. There is a sticker adjacent to the grease fitting detailing
which grease should be used. The standard bearing grease is Kluber Petamo
GHY 133N synthetic grease. Bearings should be re-greased with a compatible
product.
Output and Input Shaft Diameter Tolerance
Metric (mm)
d 18 = +0.012/+0.001
! 18 d 30 = +0.015/+0.002
! 30 d 50 = +0.018/+0.002
! 50 d 80 = +0.030/+0.011
! 80 d120 = +0.035/+0.013
!120 d180 = +0.040/+0.015
Inch
d1.750 = +0.0000/-0.0005
!1.750 = +0.0000/-0.0010
Solid Shaft DriII and Tap Shaft End
Metric (mm)
d16 = M5
!16 d 21 = M6
!21 d 24 = M8
!24 d 30 = M10
!30 d 38 = M12
!38 d 50 = M16
!50 d 85 = M20
!85 d130 = M24
Inch
d0.500 = #10-24 x 0.4 deep
!0.500 d0.875 = ¼-20 x 0.6 deep
!0.875 d0.938 = 5/16-18 x 0.7 deep
!0.938 d1.100 = 3/8-16 x 0.9 deep
!1.100 d1.300 = 1/2-13 x 1.1 deep
!1.300 d1.875 = 5/8-11 x 1.4 deep
!1.875 d3.500 = 3/4-10 x 1.7 deep
!3.500 = 1-8 x 2.2 deep
WARNING:
NORD Gear does not furnish the safety guards for the traction mechanism. It is the
responsibility of the customer to install a safety guard to conform to OSHA standards.
YOKE
(FINE ADJUSTMENT)
BOLTS (4) SLOTTED HOLES (4)