Cleveland RXT, RXTO, RXTM, RXTS, APD Installation, Operation & Maintenance Instructions Manual

INSTALLATION,
OPERATION &
MAINTENANCE
INSTRUCTIONS FOR
CLEVELAND MIXER
RXT & APD AGITATORS

Models: RXT, RXTO, RXTS,
RXTM, RXT - 2M
Models: APD, APDO, APDS,
APDM, APD-2M, SDM, SDS

RXT O&M 06/25/2015 JMN

PAGE INDEX

PAGE TOPIC
1 RECEIVING/UNPACKING
2 INSTALLATION PREP, PRE INSTALLATION CHECK LIST
3 FASTENERS, BOLT TORQUE VALUE CHART
4 REDUCER LUBRICATION DETAILS
5 PLUS, COMMISSIONING, LONG TERM STORAGE
6 SDM FILL QUANTITY
7 APD FILL QUANTITY
8 RXT FILL QUANTITY
9 LUBRICATION CHART
10 INSTALLATION NOTES­11-11b FIXING ELEMENT INSTALLATION
12 - 13 INSTALLATION NOTES
14 EXPANSION CHAMBER
15 AUTO LUBRICATOR
16 STEADY BEARING TRIPOD ASSEMBLY
17 PACKING GLAND/STUFFING BOX SEALS
18-19 IMPELLERS AND COUPLINGS
20 SIDE ENTRY MIXERS
21 SIDE ENTRY MIXER SHUT-OFF PLUG
22 TROUBLE SHOOTING

RXT O&M 06/25/2015 JMN

RXT & APD AGITATOR MANUAL_09-17-15_JN

RECEIVING AND UNPACKING YOUR MIXER

Be sure to use care when uncrating, unpacking, lifting and handling your mixer. Certain parts
such as impeller blades, hubs, couplings, steady bearings, seals, keys, hardware and other
mixer accessories may be packed in boxes inside of crates or bolted down to skids. Do not
discard any packing crates or materials until you've accounted for all the parts of your mixer
assembly.

Make sure to check the packing slip for your shipment to make sure you've received the
correct number of skids, crates and cartons. If any of the shipment was not delivered or
delivered with visible damage, please contact the carrier to report the missing pieces or
damage. Once you've contacted the carrier, please contact Cleveland Mixer so we can
document the issue.

The weight of the mixer will be indicated on
the mixer's assembly drawing and also in the
shipping documents. It's important that the
mixer be moved and installed by
professionals. Any attempt to lift or move the
mixer by an unqualified party can result in
serious injury and catastrophic damage to the
mixer.

The drive end of the mixer might be top
heavy. Never upright a mixer drive without the
proper bracing. Doing so might result in the
drive falling over and causing injury or
damage to equipment.

Never lift the drive end of the mixer by the
motor. Make sure when lifting shafting to keep
the ends level so not to bend the shafting.
After uncrating the mixer and parts, stage
them on a level surface preferably indoors or
in a clean dry location.

Some mixer parts such as shaft pullers are
supplied to perform future maintenance.
Cleveland Mixer suggest labeling these parts
and putting them into storage.

Cleveland Mixer suggests checking
your unpacked mixer assembly parts
against your packing slip and
assembly drawing to make sure
everything is accounted for before
assembling your mixer.

PAGE 1

RXT & APD AGITATOR MANUAL_09-17-15_JN

INSTALLATION SITE

Mixer drives must be properly installed if they are to produce the rated torque. Improper
installation may lead to oil leaks, reduced life or even catastrophic failure. Cleveland Mixers
are intended to be installed under the following conditions:

Unimpeded airflow to and around the mixer.•
Accessibility to oil drain, motor, seal and breather plugs.•
Mounting surfaces must be level, torsional rigid and dampened against vibration.•
Unless special measures are taken, the immediate vicinity around the mixer drive should•
not be exposed to any aggressive or corrosive substances or gases.
If the mixer has a steady bearing, the shaft and tripod must be properly aligned.•
All bolt connection surfaces must be clean and free from contamination or corrosion.•
Tank walls must be designed to withstand forces created by the mixer.•
Sufficient headroom over the mixer for installation and to be able to perform annual•
maintenance on the mixer.
Designed input voltage or air pressure to run motor. Access to flush materials for seals•
when required.

The responsibility for the design and construction of the support foundation and tank is with
end user. The foundation must be adequate to withstand normal operating loads and possible
overloads while maintaining alignment to attached system components under such loads.

An engineered structural steel foundation should be designed to provide adequate rigidity
and prevent loads from distorting the housing or cause misalignment of internal gears and
shafts.

When flange-mounting the mixer, the bulk head plate must be engineered to minimize
buckling distortions and support the cantilevered weight of the mixer.

If a concrete foundation is used, allow the concrete to set firmly before bolting down the
mixer. Grout structural steel mounting pads and bolts of sufficient size into the concrete to
adequately distribute the load stress onto the concrete foundation.

The mixer must be mounted in the designed position in order to stay properly lubricated.
Consult Cleveland Mixer before making any changes to the mixer or mounting position.

PRE INSTALLATION CHECK

Mixers are unpacked and all parts are accounted for•
The installation site meets requirements listed above•
A professional is onsite with the correct equipment to safely and securely lift the mixer•
and it's components into position
A professional electrician is onsite to wire the motor/drive•
You have all the necessary tools to install the mixer including a torque wrench (reducer•
hardware will be metric)
You've read through the O&M manual for the mixer, the manual for the motor and•
manuals for mechanical seal or speed drive (if applicable).
The tank is empty, clean and you have access to work inside to install impellers.•
(if your mixer was supplied with a steady bearing assembly) Your steady bearing tripod•
has been laser aligned with the mixer shaft and welded in it's designated location.

PAGE 2

RXT & APD AGITATOR MANUAL_09-17-15_JN

FASTENERS

Tighten all fasteners to the values shown unless specifically instructed to•
do otherwise.
Lubricate all fasteners at assembly with grease, oil or anti-seize material•
If fasteners cannot be lubricated, use dry torque spec provided on chart.•
Loose hardware can cause catastrophic damage. It is very important to•
check all fasteners at scheduled maintenance intervals.
If your process is corrosive or sanitary check the wetted hardware to•
make sure it is the correct grade before assembly.
Always use washers and lock washers if they were provided.•

USA

Standard

THREAD

SIZE

FT LB DRY

GRADE 5 GRADE 8 316 STAINLESS STEEL

FT LB

LUBED

FT LB DRY

FT LB

LUBED

FT LB DRY

FT LB

LUBED

1/4-20 8 6.3 12 9 6 5

5/16-18 17 13 24 18 11 10

3/8-16 30 23 45 35 20 17

7/16-14 50 35 70 50 33 28

1/2-13 75 55 110 80 45 38

9/16-12 110 80 150 110 59 50

5/8-11 150 110 210 160 96 82

3/4-10 260 200 380 280 131 111

7/8-9 430 320 600 450 202 172

1-8 640 480 910 680 299 254

Calculated tightening torques are based on conventional 60°F, clean and dry or lubricated
(as indicated above) thread. Standard fasteners will be supplied with a split lock washer.
Cleveland Mixer recommends a minimum of grade 5 (ASTM A449) for all hardware to 1-8 and
grade SAE 8 for larger sizes.

PAGE 3

RXT & APD AGITATOR MANUAL_09-17-15_JN

REDUCER LUBRICATION

Proper gearbox lubrication is essential in order to reducer friction, heat and moisture. Lubricants reduce heat and wear
by inserting a protective "fluid boundary" between mating parts and preventing direct metal to metal contact.
Lubricants also help prevent corrosion and oxidation, minimize foaming, improve heat transfer, optimize reducer
efficiency, absorb shock loads and reduce noise.

Most reducers used with Cleveland Mixers are shipped from the factory with a pre-determined oil fill level in
accordance to the specified reducer size and mounting position.

Cleveland Mixer recommends an oil change 3 months after startup to flush the gear case of any debris caused by the
reducer's wear-in period. Drain the oil from the reducer, take a look to make sure the oil looks clean and clear (If the

original oil is foamy and burnt looking or has chunks of metal in it, please contact the factory for assistance). Refill the
reducer with the specified measured amount of the specified oil (typical Mobil SHC 630 series). Once the original oil is

changed out, Cleveland Mixer recommends changing the oil and adding grease to the bearings once per year for the
life of the mixer.

Oil viscosity, or the oil's resistance to shear under load, is often considered the single most important property of any
gear oil. You might consider making a change to the oil viscosity to improve performance when operating the mixer in
an extremely low or high temperature. The oil supplied with the mixer from the factory is rated for use with an ambient

temperature range of 31°F-176°F. To prevent the reducer from overheating, the internal temperature of the reducer
should never exceed 220°F.

Routine oil analysis, sound lubrication practices and good tracking of oil performance trends will help extend the life of
your reducer and maximize the workload performance of your mixer. APD units size 4 and up will come with an oil
overflow canister which must be installed. The canister needs to be upright with the hose down toward the reducer. the
canister will have a rubber plug in the breather pin which must be removed before operating.

Lower bearing grease port

Horizontal shaft orientation

Oil expansion chamber vent
(rubber plug must be removed for vent to work)

Auto lubricator for motor adapter
(motor sizes 250 and up)

Oil expansion chamber
connection & oil fill port

Cap plate assembly

(under side)oil drain plug

Lower bearing grease port

Vertical shaft orientation

APD Reducer / M5
Position (top entry)

Oil Level - measured amount
Oil Grade - synthetic

Foot mount
connection

(under side)oil drain plug

Lower bearing grease port

Oil fill port Cap plate assembly

Auto lubricator for motor adapter

Oil fill port

Oil fill port

(motor sizes 250 and up)

Vertical shaft orientation

SDM Reducer / M4
Position (side entry)

Oil Level - measured amount
Oil Grade - synthetic

Cap plate assembly

RXT Reducer / M5
Position (top entry)

Oil Level

OIl Grade - synthetic

(under side)oil drain plug

- measured amount

RXT, APD & SDM STANDARD MOUNTING POSITIONS

consult factory for mounting positions not shown, for top/angle mounted units use M5

PAGE 4

RXT & APD AGITATOR MANUAL_09-17-15_JN

PLUGS

AUTO VENT DRAIN PLUG FILL LEVEL PLUG

(MUST BE OPENED BEFORE OPERATING)

COMMISSIONING

Prior to mixer start-up, complete the following:

Check the lubricant and be sure that the gear unit is filled with the•
proper oil type, to the proper level, as determined by the mounting
position (this info will also be indicated on the mixer's ID tag).
Check to make sure all breather vents are open•
Check to make sure the oil expansion chamber (if one was•
provided) is installed correctly.
All mounting hardware is torqued to the appropriate value (not•
torqueing the bolts can create an unbalance).
If a mechanical seal is required, the seal was installed/set according•
to the manufacturer's requirements, the shipping clips are removed,
the seal has lubrication (if it's not a dry running seal), the seal has
been pressure tested.
The motor is wired to run in the correct direction with the•
appropriate voltage and needed amperage to run the motor.
The shaft and impeller assemblies are properly installed. If a steady•
bearing was supplied, the SB was laser aligned with the reducer
output after the reducer was mounted on the tank. The shaft should
be straight to .001" per inch.
The mixer has been test bumped before entering into normal•
operation.

LONG TERM STORAGE

Store the reducer in its designed mounting position in accordance with•
the specified oil-fill level in a clean, dry environment. Avoid temperature
fluctuations within the range of 32°F - 104°F and relative humidity
conditions in excess of 60%.
Keep shaft sections level and flat, preferably crated to avoid warping•
and scoring the metal. Coat the shaft, impellers, hubs, keys, couplings
(any metal parts) etc. with grease to prevent rust and corrosion.

(continued on next page)

PAGE 5

RXT & APD AGITATOR MANUAL_09-17-15_JN

LONG TERM STORAGE

(continued from previous page)

Store the mixer in an area away from shock and vibration.•
Once every 2-3 months, rotate the output shaft 10-20 revolutions to keep•
the gears and bearings drying out and seizing up.
Avoid direct exposure to the sun or UV light and aggressive or corrosive•
materials in the environment.
Drain the oil and refill the reducer with fresh oil before putting the mixer•
back into operation.
Your mixers motor will come supplied with it's own set of operating and•
maintenance instructions. Please follow those instructions for long term
storage of the motor.
If your mixer requires a mechanical seal, drive unit or any other•
components supplied with a separate manufacturers operation and
maintenance manual, please follow those instructions for long term
storage of those components.

OIL FILL QUANTITY, MODEL SDM - SIDE ENTRY

MIXER MODEL UNIT OF MEASURE FILL QUANTITY

QUARTS 2.01

SDM-2

LITERS 1.90

QUARTS 3.44

SDM-3

LITERS 3.25

QUARTS 5.02

SDM-4

LITERS 4.75

QUARTS 7.93.

SDM-5

LITERS 7.50

QUARTS 12.68

SDM-6

LITERS 12.00

QUARTS 21.24

SDM-7

LITERS 20.00

QUARTS 31.71

SDM-8

LITERS 30.00

NOTE: SDM units do not require the use of an oil expansion chamber.
The breather plug must be positioned above the oil fill line. Cleveland
recommends changing the oil once per year.

PAGE 6

RXT & APD AGITATOR MANUAL_09-17-15_JN

OIL FILL QUANTITY, MODEL APD - TOP ENTRY

MIXER MODEL UNIT OF MEASURE FILL QUANTITY

APD-1

APD-2

APD-3

APD-4

QUARTS 1.27

LITERS 1.20

QUARTS 2.11

LITERS 2.00

QUARTS 4.33

LITERS 4.10

QUARTS 5.71

LITERS 5.40

QUARTS 9.30

APD-5

LITERS 8.80

QUARTS 18.50

APD-6

LITERS 17.50

QUARTS 28.50

APD-7

LITERS 27.00

QUARTS 43.30

APD-8

LITERS 41.00

QUARTS 76.10

APD-9

LITERS 72.00

NOTE: APD units size 4 and up require the use of an oil expansion
chamber. The chamber must be installed above the oil fill level with the
hose side down to allow the chamber to drain back into the reducer.

The fill quantities listed above are for APD double reduction gear
reducers. If you have a triple reduction unit (typical for sizes 8 and up)
contact the factory for oil fill quantities, this info will also be stamped on
the mixer's ID tag.

Cleveland Mixer recommends changing the oil once per year. Any unit
with a 250 series motor frame and up will require an autolubricator for
the motor input bearing. The canister must be replaced once per year.

PAGE 7

RXT & APD AGITATOR MANUAL_09-17-15_JN

OIL FILL QUANTITY, MODEL RXT - TOP ENTRY

MIXER MODEL UNIT OF MEASURE FILL QUANTITY

RXT-1

RXT-2

RXT-3

RXT-4

QUARTS 1.27

LITERS 1.20

QUARTS 2.43

LITERS 2.30

QUARTS 3.49

LITERS 3.30

QUARTS 6.87

LITERS 6.50

QUARTS 12.2

RXT-5

LITERS 11.5

QUARTS 20.1

RXT-6

LITERS 19.0

QUARTS 20.1

RXT-7

LITERS 19.0

QUARTS 40.2

RXT-8

LITERS 38.0

QUARTS 87.0

RXT-9

LITERS 82.0

NOTE: RXT units do not require the use of an oil expansion chamber.
These are top entry angled, helical bevel units. The other mixers in this
series are vertical helical units.

The fill quantities listed above are for RXT double reduction gear
reducers. If you have a triple reduction unit (typical for sizes 8 and up)
contact the factory for oil fill quantities, this info will also be stamped on
the mixer's ID tag.

Cleveland Mixer recommends changing the oil once per year.

PAGE 8

RXT & APD AGITATOR MANUAL_09-17-15_JN

LUBRICATION APPROVED OILS CHART

ISO VISCOSITY OIL TYPE

PAO-EP

VG150

PAO

FG-PAO

PAO-EP

VG220

PAO

FG-PAO

PAO-EP

VG460

PAO

AMBIENT TEMP

RANGE

-22 to 77°F

-22 to 77°F MOBIL SHC 629 Omala RL150 Alphasyn 150 NA

5 to 77°F

-22 to 140°F

-22 to 140°F MOBIL SHC 630 Omala RL220 Alphasyn T220 NA

-13 to 140°F

-4 to 176°F

-4 to 176°F MOBIL SHC 634 Omala RL460 Alphasyn T460 NA

MOBIL SHELL CASTROL FUCHS

Mobilgear

SHC150

MOBIL SHC

CIBUS 150

Mobilgear

SHC220

MOBIL SHC

CIBUS 220

Mobilgear

SHC460

Omala HD150

NA NA Cassida GL150

Omala HD220

NA NA Cassida GL220

Omala HD460

Alphasyn

EP150

Alphasyn

EP220

Alphasyn

EP460

Gearmaster

SYN150/NA

Gearmaster

SYN220/NA

Gearmaster

SYN460/NA

KLUBER

LUBRICATION

Klubersynth

EG4-150

Klubersynth

GEM4-150N

Klubersoil 4 UH

1-150N

Klubersynth

EG4-220

Klubersynth
GEM4-220N

Klubersoil 4 UH

1-220N

Klubersynth

EG4-460

Klubersynth
GEM4-460N

FG-PAO

-4 to 176°F

MOBIL SHC

CIBUS 460

NA NA Cassida GL460

Klubersoil 4 UH

1-460N

LUBRICATION APPROVED GREASE CHART

NLGI GRADE GREASE TYPE AMBIENT TEMP MFG BRAND

STANDARD -30 to 140°F Mobil Grease XHP222

NLGI GRADE 2

LUBRICATION NOTES

1. Food grade lubricants must be in compliance with FDA 212 CFR 178.3570 and qualify as a NSF-H1 lubricant. Please consult
with lubrication manufacturer for more information.

2. When making a lubrication change, check with the lubrication supplier to assure compatibility and to obtain recommended
cleaning or flushing procedures.

3. Do not mix different oils with different additive packages or different base oil formulation types. Polyglycol (PG) oils are not
miscible with other oil types and never be mixed with mineral oil or polyphaolefin (PAO) synthetic oil.

HIGH TEMP -40-176°F Mobil Polyrex EP 2

FOOD GRADE -22-104°F Mobil SHC Polyrex 222

PAO-EP (synthetic polyalphaolefin oil w/ EP additive)
PAO (synthetic polyalphaolinfin oil)
FG-PAO (food grade polyalphaolifin oil)

PAGE 9

RXT & APD AGITATOR MANUAL_09-17-15_JN

Helical gearing w/
vertical mounted motor

ASSEMBLY OF TOP ENTRY MIXERS

The RXT and APD models are mixers that mount to the top of a tank, possibly by a
flange connection to the tank nozzle or suspended on beams above an open top
tank.

All RXT and APD models are designed and built custom to the requirements of
each individual process. It's possible the mixer you are installing will look different or
have additional or fewer components than what is shown in this manual. This
manual covers basic installation of our most common designs.

The size of your mixer is directly effected by the tank volume, tank shape, desired
level of agitation and fluid viscosity. Some mixers are supplied with a single direct
input mixing shaft and single impeller while other larger agitator set ups come with
multiple shaft sections, multiple impellers, steady bearings assemblies, etc. You can
refer to your approval drawing for the specifics of your agitator.

The following steps must be completed in order to make sure your top mounted
mixer is assembled correctly:

RXT UNIT

TOP MOUNT

Your drive unit (reducer, motor, stub shaft and HS
couplings) will (typically) come preassembled from
the factory. It is ok to leave it assembled as you
assemble the rest of the mixer to it. Make sure to
have all of your hardware and tools handy for
connecting the mixer sections together. Torque all
the bolts to the required values to help keep the
components aligned.

APD UNIT

TOP MOUNT

Vertical shaft

Down pumping impellers

Helical bevel
gearing w/
horizontal
mounted
motor

Vertical shaft

Down pumping impellers

Seals are the most delicate components in the installation of
an agitator. It's very important that if you have a mechanical
seal, to follow the manufacturers installation instructions
(provided or available online). Do not rest weight on the seal,
do not suspend any of the mixer's from the seal and don't
bang the seal around. Seals have many small, delicate inner
workings that can be easily damaged.

It's good to get measurements of the area around the
mixer and shaft sections to create an installation plan
prior to starting installation. Shaft sections can be long
and heavy. It works best to get them staged in the tank
prior to installing your drive unit. The use of a shaft
catcher to suspend the weight of the shaft while
lowering your drive down can be a helpful aid in
installation.

Multiple impellers assemblies shown. These can be installed
last once the drive end and shafting are secured in place.

Be careful when assembling the impellers. Once the tank is
filled and the impellers are submerged it's not easy to get
back to these to make adjustments.

PAGE 10

RXT & APD AGITATOR MANUAL_09-17-15_JN

ASSEMBLING THE SHAFT FIXING ELEMENT

For RXT, APD and SDM models with a hollow output shaft, a fixing
element kit will be supplied with your mixer. This kit will include a cover
plate w/ hardware, a cap plate with a lock washer and bolt, a
plastic bore cap, shaft key and a snap ring (not supplied with some
units).

You mixer will have one of the following configurations:

1. A straight shaft, a shaft with a single diameter from end to end. This
is the shaft that will require a snap ring installed in the groove towards
the top of the shaft quill. This snap ring will prevent the shaft from
sliding up through the shaft quill from the thrust of the mixer.

2. A shouldered shaft, a shaft with a step that will sit just below the
lower slow speed seal of the reducer. This shoulder fills the role of the
snap ring used on the straight shaft.

3. A stub shaft, this shaft might be shouldered or straight. It's a short
shaft with a coupling a longer shaft will connect to.

Cover Plate
Cap Plate Bolt w/

Lock washer

Cap Plate

Snap Ring

Hollow Quill

Shaft Key

Mixer Shaft

Assembly:

1. Slide shaft up into the hollow
shaft quill in the reducer from
the bottom of the reducer.
Keep the key slots lined up.

2. Insert shaft key thru the shaft
quill at the top of the reducer.
so it aligns with the top of the
shaft

3. If you have a shaft that
requires a snap ring, insert the
ring into the snap ring groove
inside the shaft quill. The snap
ring will sit at the top of the
shaft.

4. Insert the cap plate at the
top of the quill, use the lock
washer and bolt supplied to
lock the assembly together.
Torque the shaft bolt.

Shouldered Shaft Straight Shaft

5. Install the cover cap and
cover plate.

PAGE 11

RXT & APD AGITATOR MANUAL_09-17-15_JN

SECTION VIEW - REDUCER SHAFT ASSEMBLY

Before inserting your mixer shaft into your gear reducer, Cleveland Mixer recommends applying a
lubrication compound to the insertion portion of the shaft, such as Anti-Seize, to prevent the shaft
from galling up and getting stuck inside the hollow shaft. Never force or hammer the shaft into the
quill, the shaft is factory fit to the reducer and should slide in without force.

Snap ring
inserted. Top of
shaft against
snap ring, cap

plate plate
Cap plate
against top
of shaft

against snap

ring.

Shaft collar
against bottom
of reducer

Collared shaft

Straight shaft

AA

PAGE 11B

RXT & APD AGITATOR MANUAL_09-17-15_JN

When preparing to install your
mixer on your tank, take a
moment to gather all of the
assembly parts and tools you'll
need. Once the mixer and
shaft(s) are suspended, it will
be difficult and possibly
dangerous to halt the
assembly procedure. It's best
to have a complete plan and
all parts accounted for before
beginning the process and
raising the mixer components
off the ground.

LOWER SHAFT PARTS

The lower shaft
components such
as lower and
intermediate shaft
sections, hubs and
blades should be
staged inside the
tank prior to
installing the
mixer. If the the
lower and
intermediate shaft
sections are too
large and heavy
to lift without a
crane, you might
need to construct
scaffolding inside
of the tank to
support their
weight.

The Cleveland Mixer shaft catcher is a two piece split collar that tensions around the
shaft by tightening down on the 4 cap bolts to lock the catcher in place. Once
tightened around the shaft, the catcher should be able to support the weight of the
shaft (only). It is not designed to support additional weight of impellers or multiple shaft
sections. You might not have been supplied with your order. It is a separate
component designed to aid in installation of shafts for top entry mixers. If you need a
shaft catcher for installation, please contact Cleveland Mixer to order.

SHAFT CATCHER

PAGE 12

RXT & APD AGITATOR MANUAL_09-17-15_JN

STEP 1 - (detail page 11) Use the
mixer mounting flange with a
shaft catcher (or your own
bracing) to suspend the weight
of the mixer shaft. Assemble the
shaft coupling to the mixer
shaft(make sure to torque and
use thread locker on the cap
plate bolts). If there's a
mechanical seal, lip seal or
packing gland be sure these
are in place (not yet locked
down) under the shaft coupling
before assembling the
coupling.

STEP 2 - The gear reducer,
motor, pedestal and stub
shaft will typically be
shipped preassembled from
the factory (if your is not, you
will need to assemble these
parts before completing this
step) in step 2, use the
appropriate lifting
techniques to lift and lower
the drive end of the mixer to
mate with the mixer shaft or
mixer shaft coupling. Use the
fasteners supplied to make
this connection before
resting the weight of the
drive on the bracing or shaft
catcher.

Assemble to top
of mixer shaft

If you're mixer requires a
mechanical seal, you'll
need to set it in place on
the shaft below the shaft
coupling before the shaft
coupling is fastened in
place. Slide the
mechanical seal on the
shaft, carefully so it sits
about the shaft catcher.
You will not need to fasten
the seal to the flange or
lock it to the shaft until the
rest of the mixer assembly is
assembled.

TAPER BORE COUPLING

fasten coupling hardware•
remove shaft catcher•
fasten flange hardware•
torque the fasteners•
install seal•

MIXER DRIVE ASSEMBLED TO TANK FLANGE

PAGE 13

RXT & APD AGITATOR MANUAL_09-17-15_JN

Oil Expansion Chamber

APD units size 4 and up are supplied with an oil expansion chamber. With the motor mounted vertically
and the gear case filled almost completely with oil in order to lubricate the 1st stage gearing, certain
operating conditions can result in additional oil churning and heating of the air space above the oil
resulting in oil loss. The oil expansion chamber provides a safe overflow area for the expanded oil-air
mixture, thus eliminating excessive pressure build-up, minimizing the formation of foam and preventing
oil-loss through the breather, oil seals, gaskets, etc.

As heat is released from the expanded air-oil mixture contained within the overflow chamber, gravity
allows the oil to be returned to primary gear sump supply, eliminating a critical loss of the oil level (the
expansion chamber must be mounted above the oil fill line with the hose connected down towards the
oil supply so the oil can flow back into the reducer naturally).

APD sizes 4 and up with vertical mounted motors

Expansion canister vent (remove
rubber plug before operating)

Oil Expansion Canister

Connection Detail

Hose input/output to and from
canister from reducer oil supply

Hose

Hose connected to reducer through
reducer vent plug.

SRXT Models

SRXT (side or wall
mounted) mixers
with the motor
mounted vertical
must be run with
an oil overflow
chamber just as
the APD units, sizes
4 and up. Mount
the chamber using
the motor adapter
mounting
hardware. Make
sure the canister is
up parallel to the
motor with the
hose towards the
bottom
connecting into
the port, replacing
the vent plug.

PAGE 14

RXT & APD AGITATOR MANUAL_09-17-15_JN

AUTO LUBRICATOR ACTIVATION

If you have an APD mixer model with a motor,
frame size 250 or larger, the input adapter will
require an auto-lubricator canister to lubricate the
input adapter bearing.

Your mixer will come supplied with a canister
factory installed. You'll need to activate the
lubricator canister prior to starting the mixer.

An auto-lubricator canister cartridge has a one
year life span. After one year of use you will need
to replace the canister. You can contact
Cleveland Mixer for replacement canisters.

EXPLOSION OF AUTO LUBRICATOR ASSEMBLY

COVER PLATE

HARDWARE

ACTIVATION KEY

AUTO LUBRICATOR CANISTER (KIT)
P/N APD-28301000

ACTIVATION KEY

Prior to starting your mixer: screw in Auto­Lubricator activation key and turn it
clockwise until the round plastic ring snaps
off. It's a good idea to record the date of
activation so you know when to replace
the canister.

Once the canister is activated, replace
the cover plate and secure it to the motor
adapter.

PAGE 15

RXT & APD AGITATOR MANUAL_09-17-15_JN

STEADY BEARING ASSEMBLY

If your mixer was supplied with a steady bearing
assembly, the tripod will need to be welded to the
bottom center of the tank. The alignment of the shaft
assembly is very important, the center of the tripod
must be concentric with the center of the mounting
flange or mount plate used to mount your mixer to the
tank. Use a laser to align the tripod with the mounting
fixture before welding, both the tripod and mounting
fixture must sit level on the tank as shown. Weld the
tripod in place prior to assembling your mixer drive and
shaft assembly. When assembling the shaft sections,
make sure to torque the coupling bolts with the values
provided in this manual.

LEVEL

Use a level when
connecting the mounting
flange or mount plate to
the tank. If the flange or
plate don't sit completely
level, use shims to get the
level

LASER ALIGNMENT

MIXER SHAFT

HARDWARE

BUSHING

All hardware used to
connect the shaft
couplings must be torqued
to keep the assembly true

TOP VIEW

Use a level when welding
the tripod to the tank

LEVEL

FRONT VIEW

BUSHING HOUSING

TRIPOD

EXPLODED ASSY

NOTE: Failure to properly align the mixer shaft with the tripod

from the reducer output to the center of the tank could
result in the following: accelerated wearing of the bushing,
scoring and wear on the mixer shaft, damage to the tripod
including tearing the tripod support welds off the tank which
can lead to catastrophic failure.

PAGE 16

RXT & APD AGITATOR MANUAL_09-17-15_JN

PACKING GLANDS / STUFFING BOX

Cleveland Mixer stuffing box seals are supplied as either "high pressure" with 7 packing rings (the thickness of the
packing is dictated by the shaft diameter) or "low pressure" with a single packing ring. High pressure stuffing box seals
are typically supplied with mixers that are side wall mounted or mounted on a sealed tank with pressure over 30 PSI but
less than 100 PSI. Low pressure stuffing box seals are typically supplied with mixers that are top mounted on sealed tanks
with pressure of less than 30 PSI.

<PARA >1. Packing should always be installed as individual rings and not spiraled around the shaft.

2. Lubricate each ring generously with grease (food grade grease can be used with food grade packing in sanitary
applications).

3. High pressure stuffing boxes have four packing rings, a lantern ring and then three packing rings on top. Once the
gland is packed in that order, slide the split follower down to sit on top of the packing and snug the four nuts just so the
split follower is touching the packing. The lower pressure is the same procedure but with the follower and one packing
ring.

4. Pump the gland full of grease using the grease fitting on the side of the gland. You can pump grease into the gland
until you see it push through the top. Once the gland is completely filled with grease, tighten the split follower nuts
evenly until the gland is sealing properly. The seal is not created by tension from tightening the nuts, the seal is created
by the grease int he packing against the mixer shaft. Over tightening the nuts and pushing the follower down on the
packing can damage the mixer shaft.

5. As the mixer runs and the gland wears in, you'll most likely need to add addtional grease and possibly tighten down
on the split follower nuts slowly and evenly in about 1/2 turn increments.

6. The gland will need to be greased as regularly as needed to keep the seal. This can vary based on the contents of
the tank, the shaft RPM and amount of pressure on the seal.

DRIVE END OF MIXER7. Remember to replace the

pedestal guards and secure
the guards back onto the
pedestal once the packing
gland is set up. You can add
extensions to the grease
fittings through the guards for
ease of access for continued
lubrication.

"Low Pressure - 0-30 PSI"

Tension nuts

"High Pressure - 30-100 PSI"

Tension nuts w/ flat washers

Split follower

(3) Upper packing rings

Lantern ring

(4) Lower packing rings

Pedestal

Grease fitting

Split follower

(1) packing ring

Stub shaft or mixer shaft

PAGE 17

RXT & APD AGITATOR MANUAL_09-17-15_JN

Impellers

Cleveland Mixer offers several different options for mixing impellers. The design of the impeller is typically
based on the process specifications. Different types of mixing and different levels of agitation require
different flow patterns and those flow patterns are created by the style of the impeller blades. The size
and speed of the impeller along with the pitch of the blades will dictate the amount of power needed
to turn them. The mixing power is a combination of the motor and gearbox ratings.

Most mixers are designed specifically to a single process. Cleveland Mixer does not recommend altering
the process or the design of the mixer without first consulting the factory. Increasing the viscosity of the
process media or increasing the output RPM's are common causes for impeller damage and overload
failure.
The most common impeller designs provided by Cleveland Mixer:

1. Hydrofoil Impellers are axial thrust-giving elements. These elements give a very high degree of swirling
in the vessel. The flow pattern generated in the fluid resembles a helix.

2. Axial flow turbines impose essentially bulk motion, and are used on homogenization processes, in
which increased fluid volumetric flow rate is important.

3. Radial flow turbines impose essentially shear stress to the fluid, and are used, for example, to mix
immiscible liquids or in general when there is a deformable interface to break. Another application of
radial flow impellers are the mixing of very viscous fluids.

AXF-3 (3 blade, axial flow turbine)

TOP

RAD-4 (4 blade, radial flow turbine)

XTF-3 (3 blade, down pumping hydrofoil)

TOP

TOP

Some impellers will require stabilizer fins as shown on the
left. If you have multiple impeller assemblies but only
one set with stabilizers, the set with the stabilizers should
be the set closest to the bottom of the tank (check your
approval drawing to be sure). Make sure the blades are
fastened to the hubs with the stabilizers side down.

PAGE 18

RXT & APD AGITATOR MANUAL_09-17-15_JN

Impellers, Shafts & Couplings

Once the drive end of your mixer is installed on the tank, it's time to connect your shaft couplings (if your
mixer has multiple shaft sections) and assemble the impellers.

Before beginning this stage of the assembly, check to make sure you have all of the components,
hardware and tools you'll need to correctly connect the shaft couplings and impeller assemblies. You can
refer to your assembly approval drawing for a list of all of the parts associated with your mixer.

Cleveland Mixer recommends using thread locking compound on all connection hardware. A calibrated
torque wrench is required to keep balance in the connections and to ensure the connection bolts are
stretched and tightened so they won't come loose during operation.

SHAFT COUPLINGS

1. Each shaft coupling connection will have a male and female register. Check these registers for dirt, dings and dents
that might have accrued during shipment or staging of these components. For proper alignment, it's important these
registers have a clean connection.

2. Once the registers are mated, insert the pre-lubricated connection bolts. Each set of hardware will include a bolt,
split spring lock washer and a nut. You can check your assembly drawing for the wetted parts material of construction
to make sure you're using the correct hardware. The hardware will be either 316L stainless steel or zinc. Stainless steel
hardware should be used in sanitary or corrosive applications.

3. Add a few drops of thread locker and hand tighten the nuts to the lock washers. Use the torque chart from this
manual to find the torque value for the size of the bolt. Torque the nuts down each of the nuts down to the same
value to ensure proper alignment of the coupling connection.

IMPELLER ASSEMBLY

Assemble the impellers using the same procedure described above to tighten the connection hardware.

1. Check the center bore of the hub to make sure it's clean from dings, dents, scratches and dirt. The bore tolerance
might be as close as +/- .005", you don't want to force the hub on the shaft. Forcing can cause it to gall up and get
stuck on the shaft. Check the hub for the marking "TOP" make sure that side of the hub slides up towards the mixer
drive. The hub should slide up the shaft nice and easy with minimal assistance beyond supporting it's weight.

2. Starting with the top hub (if you have multiple impellers) slide the hub up over the key slot.

3. Insert the key into the key slot with the gib end down. You should be able to slide the hub down and let it rest on the
key without a fastener.

4. Add a few drops of thread locking compound or fastener lubricant and torque the set screw to the key. The set
screw should line up with a dimple in the center of the key.

5. Fasten the blades to the bottom of the hub ears. Blades with stabilizer fins should have the fin side down. Double
check this assembly before operating the mixer. Operating the mixer with the blades or hubs on backwards or upside
down can cause catastrophic damage to the mixer.

Bolts - lubricate before fastening

Hub marked "TOP" side up

Hub

Set screw

Female register

Male register

Dimple for set screw

Hook end of Gib Key

Bolt blades to bottom of hub ear

Nuts & Lock Washers

PAGE 19

RXT & APD AGITATOR MANUAL_09-17-15_JN

SIDE ENTRY

Sealed, flange mounted mixers that mount to the tank with the with the mixing shaft horizontally are known as "Side
Entry" mixers. This includes Cleveland's models: SDM, SDS, SRXTM and SRXTS. The first "S" represents side entry, then the
model number and the last letter in the name, either S or M represents "M" for mechanical seal and "S" for packing
gland.

Before mounting the mixer you will need to check the following: (1) The tank walls and tank nozzle construction are
strong enough to support the weight of the mixer and the forces the mixer will produce. (2) The tank nozzle flange
matches the mixer's mounting flange. (3) The tank nozzle is angled tot he requirements of the assembly drawing
(typically 7-10° angle). (4) The ground/floor beneath the mixer is concrete or of equal rigidity to support the weight of
the mixer with the mixer support stand. (5) If your mixer seal requires a seal flush (most double mechanical seals will
require a flush) you have the necessary fluid or gas piped to the seal.

Once the mixer is assembled to the tank. It's good practice to double check the impeller and shut off assemblies on
the inboard side of the tank; since side entry mixers are typically mounted at the bottom of very large volume tanks.
There's a good chance you will not have access to the inboard components once the tank is filled.

The shut off bushing will
be set to operate with
a gap between the
bushing and shut off

Pedestal Guard

Tank Wall

port. Do not operate
the mixer with the shut
off bushing engaged.

Your side entry mixer will
come supplied with an A­frame support stand or an
adjustable pipe leg stand.
This support must be fasten
to the mixer pedestal and
then to the floor beneath.
Make sure the support sits
level and doesn't't push the
mixer up on an angle.

Shaft Retraction Devise: Your side entry mixer will come supplied with a shaft
retractor to be used as an aid in the procedure to remove the mechanical seal.
You won't need this item as part of the initial assembly installation. You can set it
aside and save it for future maintenance procedures.

Pedestal Guard

FLOOR

Split Collar: Your side entry mixer will come supplied with a split collar you will use to
replace the mechanical seal when performing maintenance on the seal. This item
will not be part of the initial assembly installation. Set this item aside and save it for
use in future maintenance procedures.

PAGE 20

RXT & APD AGITATOR MANUAL_09-17-15_JN

SIDE ENTRY SHUT OFF PLUG

All mechanical seals provided with side entry mixers will come supplied with a set of their manufacturers'
instructions. If your side entry mixer seal starts leaking, please first refer to the seal instructions to review the
installation procedure, flush requirements and the manufacturers' trouble shooting guide.

The Cleveland Mixer shut off plug should only be activated as a last resort. It's always best to drain your
tank before removing the mechanical seal. If it is necessary to activate the plug in order to perform
maintenance on the seal, please take the following steps: (1) Turn the mixer off - You will need the shaft
retraction device and split collar that were provided with your mixer. (2) Remove the cap plate and fixing
element from the top of your mixers gear reducer. (3) Thread the retraction rod into the top of the mixing
shaft, then screw the nut down until it mates against the top of the retraction devise. (4) Release the
connection between the mechanical seal and shaft (typically set screws). (5) Tighten the nut on the
retraction devise, drawing the shaft out of the mixer towards you. Tighten the nut until the shaft pulls all
they way up to the retraction cap. (6) Very slowly! Start to release the mounting bolts for the mechanical
seal. If the plug is properly engaged, you shouldn't't get any more than a drip from the seal area. Remove
the bolts and slide the seal up to the shaft coupling. (7) Replace the seal with the split collar. (8)
Disconnect the removable coupling from the stub shaft flange in the center of the mixer shaft. (9) Slide the
mechanical seal up over the top of the seal and remove it to perform maintenance.

Release the connection from the
mechanical seal to the mixer shaft

Remove fixing element and replace with
retraction devise. Thread the retraction
rod into the top of the shaft and secure
the nut against the cap

Slowly tighten down on the
retraction nut pulling the shaft to the
top of the retraction cap

Pulling the shaft outward will engage the shut off plug.

The shut off plug holds
water column pressure
and is only to be used as a
last resort. This plug is not
designed to be engaged
while the mixer is in
operation. Since the plug
sits on the inboard side of
the tank and can't be
inspected before use, use
extreme caution when
activating the plug. Do
not use this plug with
hazmats or dangerous
materials.

After completing step 6, replace the
mechanical seal with the split collar

Tank - not to scale

Final step is to remove the shaft coupling,
slide the seal up over the top and remove
the seal.

PAGE 21

RXT & APD AGITATOR MANUAL_09-17-15_JN