STS M-750E User manual

Surface to Surface Inc. ®
Operators Manual
** M-750E **
USE IN CONJUNCTION WITH OEM MANUALS (ENCLOSED)
Unit Serial No. _______________
Teco-Westinghouse Motor
Optim HE PLUS – Serial No.__________________
Gorman-Rupp Pump
GR-84B2 – Serial No. ________________
Links relating to this Manual
www.stsmixers.com
www.twmi.com
www.grpumps.com
STS-023 Rev. 09/28/16 www.stsmixers.com
Dealer

2
*** NOTICE ***
THIS UNIT IS TO BE INSTALLED, SET-UP, AND
WIRED BY A QUALIFIED ELECTRICIAN TO BE
COMMISSIONED BY THE END USER (CUSTOMER).
ALL CODES AND REGULATIONS ARE TO BE
FOLLOWED. SURFACE TO SURFACE ASSUMES NO
RESPONSIBILITY FOR DAMAGES OR PERSONAL
INJURIES CAUSED BY IMPROPER INSTALLATION.
If a problem or concern is found while installation is being
done, a call to the appropriate party is recommended.
Teco-Westinghouse West 1-800-661-4023
East 1-800-268-4770
Surface to Surface Inc. 1-800-567-0978
STS-024 Rev. 01/04

3
****** CAUTION ******
BEFORE STARTING THIS MOTOR, DISENGAGE THE
MOTOR/PUMP COUPLER (LOVE JOY) AND CHECK THE
MOTOR FOR PROPER ROTATION. IF THIS STEP IS NOT
FOLLOWER, THE IMPELLER MAY BECOME SEPARATED
FROM THE SHAFT AND CAUSE SUFFICIENT DAMAGE TO
THE PUMP AND IMPELLER AND OR PERSONAL HARM.
To disengage the coupler, remove the guard, loosen the setscrew on each
coupler and slide the couplers back away from each other and TIGHTEN the
setscrews back up. Remove the black insert. Reinstall the guard, and then
switch the motor on/off and as the shaft slows down, you will be able to see the
rotation direction. If the need be, change the wiring to provide the proper
rotation.
STS-024 Rev. 01/04

4
TABLE OF
CONTENTS
PAGE
STS Inc Warranty………………………………………………………….. 7
Safety Statements………………………………………………...………… 8-11
Safety Markings……………………………………………………………. 12
Main Working Components (Photo)……………………………………… 13
Introduction to the M-750E……………….………………………………. 14
M-750E Foot Print (top view)……………………………………………… 15
M-750E General Data Sheet………………………………………………. 16
Identifying Your Machine & Components………………………………. 17
SECTION II (Description, Care and Maintenance)
Polyethylene Plastic Reservoir Tank…………………….…………… 19-21
Electric powered centrifugal pump.…….…………….……. 22-24
Filter shear system……………………………………………………. 25-26
Venturi mixing tee……………………………..………..……………. 27
Wash wand……………………………………………………...……. 28
Dry hopper with table & hopper valve…………………………..…… 29
Internal tank jet gun…………………………………...……………… 30
SECTION III (Set-up and installation of unit in Detail)
Permanent mounting of unit…………………………...…………….. 32
Portable use of unit…………………….…………………….………. 32

5
TABLE OF
CONTENTS
PAGE
SECTION IV (Operating the M-750E Unit.)
Site set-up and pre-check…………………………………………….. 34
Starting the motor and pump………………………....……………… 35
Typical mixing operation……………………….……………………. 36
Typical transfer / off-loading operation……………………………… 37
Shutdown, cleanup & storage
Warm weather…………………………………….…………. 38
Cold/ freezing weather………………………………….…… 39
Prolonged periods of storage………………………………… 40
**Optional self-loading feature……………………………...………… 41
SECTION V (Trouble shooting)
Trouble Shooting the M-750E ………….…………………..……… 43-45
SECTION VI (Periodic Maintenance & Repair Information)
Maintenance Schedule…………………….….………………….…... 46
Centrifugal Trash Pump Seal Replacement………………………..… 47
Bolt torque Specifications…………………………………….……... 48
Notes…………………………………………………….…………… 49

6
TABLE OF
CONTENTS
PAGE
SECTION VII (OEM Repair Information)
GR Centrifugal Pump Owner’s Manual……………………..………… 51-62
Teco-Westinghouse Owner’s Manual excerpts ………………………. 63-70
Gruvloc® Pipe Couplings……………………….………………..…… 71-73
Quick-Flex® Drive Coupling ………….…………….…………..…… 74-77
SECTION VIII (Parts Manual)
M-750E PARTS MANUAL…………………….……………….……. 79-82

7
Limited Warranty
United States and Canada
Surface to Surface Inc. or it’s subsidiary which last sold the product, warrants new products sold by it for use in the
United States and Canada to be, at the time of manufacture, free from defects in workmanship and materials. This
warranty covers for a period of Twelve (12) Months of operation from the date of delivery for initial use, whichever
comes first.
Exclusions and Additional Limitations
1. This warranty relates to the condition of the product at the time of manufacture and does not cover parts or
service as a result of:
(a) Normal wear and tear or required maintenance including, without limitation, adjustments or replacement of
components subject to wear and tear, such as belts, hoses, seals and/or packing, fuses, bulbs,
switches and ignition parts.
(b) Abuse including, without limitation, neglect, improper operation, misapplication, overloading, accident or
alterations not approved by Surface to Surface Inc.
(c) Lack of maintenance, including, without limitation, failure to inspect and maintain, improper repair, use of
“unapproved parts”, cracked engine heads and blocks unless caused by the failure of
an internally lubricated part or repair of engine valves, rings or guides.
2. The Company’s warranty does not apply to purchased components manufactured by others where separate
warranty is made by the manufacture of such components and will be applied as interpreted by
the supplier.
3. All claims under his warranty shall be submitted in writing by the distributor to the Company, which will be the
sole judge in determining the merits of the claim.
4. The company shall have the right to have all products or parts claimed to be defective returned to it and the
cost of shipping such items shall be borne by the distributor.
……………………………………………………………………………………
Warranty Registration Card
In order to help us provide complete service for our product, please complete this card and return it.
If not returned, all requests for warranty will be denied.
Print Name: …………………………………………………………………….….
Address: …………………………………………………………………………...
City: ……………………State/Province………………Zip/PC…………………...
Model No. ………………………….. Serial No. …………………………………
Date of Purchase ………………………… Dealer ………………………………..
Return to: Surface to Surface Inc.
5150 Forest Rd. RR#3
Watford, Ontario, Canada
N0M 2S0
01/14/08

8
M-750E
SAFETY STATEMENTS
Your personal safety and the safe operation of this unit are the concern of Surface to Surface Inc, and by
reading and understanding this manual and understanding the safety statements, you will decrease the risk of
personal and equipment damage.
Safety statements are listed here and throughout this manual to draw your attention to potential hazards that
may be encountered while operating this piece of equipment. While reading this manual, you will notice that
certain safety statements will relate directly to the operation, or maintenance of that particular part of the unit and
should be followed carefully. Decals on the unit also follow the same format as the warnings in this manual, and
therefore should be kept in good repair to alert the operator and others of the potential hazard.
The engine / motor manual also contains hazard warnings which pertain to the engine / motor and should
also be followed.
This safety alert symbol appears with most safety statements.
It means attention, become alert, your safety is involved!
Please read and abide by the message that follows the safety alert symbol.
DANGER
WARNING CAUTION
CAUTION
Caution "without the safety alert symbol"
indicates an potentially hazardous
situtation that can cause damage to the,
machine, personal property and / or the
environment or cause the machine to
operate improperly.
Danger (the word "DANGER" is in white
letters with a red rectangle behind it)
indicates an imminently hazardous
situation, which, if not avoided, will
result in death or serious injury.
Danger is limited to the most extreme
situations.
Warning (the word "WARNING" is in black
letters with an orange rectangle behind it)
indicates an potentially hazardous
situation which, if not avoided, could
result in death or serious injury.
Caution (the word "CAUTION" is in black
letters with a yellow rectangle behind it)
indicates an potentially hazardous
situation which, if not avoided, may
result in minor or moderate injury.

9
M-750E
SAFETY STATEMENTS
The following caution statements have been drawn from the instructions in this manual. They
have been assembled here for ready reference.
DANGER
IN AN EMERGENCY
DANGER
NEVER ATTEMPT REPAIRS
OR DISASSEMBLY
WARNING
NEVER USE BODY PARTS,
OR FOREIGN OBJECTS
in an attempt to unplug or clean the
hopper valve or mixing tee.
Serious personal injury or
damage will result.
WARNING
Serious personal injury will result.
DO NOT REMOVE OR MODIFY
SAFETY COVERS OR GUARDS.
WARNING
while the unit is in operation.
Serious personal injury will result.
NEVER ATTEMPT TO REMOVE
OR CLEAN THE FILTER SHEAR
CAUTION
DO NOT POSITION
ANY PART OF YOUR BODY
over the hopper, valve,
or mixing tee while cleaning.
CAUTION
WHEN THE UNIT
IS IN OPERATION,
CAUTION
NEVER OPERATE THE MIXING
unit with the tank lid open.
If viewing is necessary, open
only the small inspection
vent cap in the center of the lid.
shut off all power (switch)
to halt the motor, pump, and fluid flow
without shutting off the motor and
disconnecting/lock-out the power source.
Serious personal injury will result.
the fluid in the piping may reach
pressures up to 50 p.s.i.

10
M-750E
SAFETY STATEMENTScontinued
The following caution statements have been drawn from the instructions in this manual. They
have been assembled here for ready reference.
CAUTION
TRAPPED FLUID MAY BE PRESENT
and will spill out when piping, hoses,
pump or filter shear are removed.
CAUTION
AVOID ALLOWING FOREIGN MATERIAL
into the Venturi Mixing Tee thru the
Hopper, by keeping the valve closed
when not in use.
CAUTION
NEVER LEAVE LIQUID IN THE
PUMP CASING, PIPING, OR HOSES
during freezing weather conditions,
as damage will result.
Follow instruction for winterizing.
CAUTION
CAUTION
CAUTION
CARE MUST BE TAKEN WHEN
INSTALLING THE COUPLER GASKETS.
If the gaskets are not properly lubricated
and installed, a leak may develop.
CAUTION
IMPROPER INSTALLATION OF THE
MECHANICAL or GREASE SEAL
will result in leakage and possible
damage to the seal. All maintenance,
operating and repair of this unit, must be
done per the instructions in the operators
manual for safety and reliability.
CAUTION
WHEN TRANSFERRING FLUID
to the drill rig, fluid pressure may
reach or exceed 50 p.s.i.
CHECK the drill rig manufacturers
specifications regarding maximum inlet
pressures allowed for their pump.
BEFORE STARTING THE MOTOR,
BE SURE THE PUMP IS PRIMED!
Check the pump by slowly & carefully
opening the plug located on the top
of the centrifugal pump discharge elbow.
A visual inspection can be made if the fluid
escapes around the plug as it is loosened.
Remove the plug to view inside fluid level.
The centrifugal pump seal WILL be
damaged if allowed to cavitate or run dry.
BEFORE STARTING OR RESTARTING
the motor and centrifugal pump, make
sure any valves installed on the pump
suction inlet line are open, and the
fluid level in the tank is above
the suction line.

11
M-750E
SAFETY STATEMENTScontinued
The following caution statements have been drawn from the instructions in this manual. They
have been assembled here for ready reference.
CAUTION
CAUTION
The manufacturer should be consulted
when considering alternative uses
for this piece of equipment.
This unit was designed for the mixing
and shearing of a dry additive, into a
liquid stream.
Other uses may create unforeseen safety
issues and personal injury risk.
CAUTION
BEFORE LIFTING OR MOVING THE UNIT,
all fluid should be removed from the tank.
CAUTION
AVOID PLACING OBJECTS
on top or against the tank as damage
may result from the weight.
CAUTION
WARNING
LIFTING LUGS OR THE LIFTING POINT(S)
identified and labelled on the skid
structure must be used in order to
safely lift and transport the unit.
TO ENTER THE TANK is not recommended
Personal injury could result from
the presents of hazardous fumes,
remaining fluid or unit start-up.
REFER TO THE SAFETY
STATEMENTS IN THE
MOTOR OEM MANUAL
AND
THIS MANUAL
REGARDING THESE
OPERATIONS.

12
M-750E
Safety Markings
Hazard and warning markings have been placed at appropriate points on the unit. International symbols
have been used, in order to ensure universal understanding of the nature of the hazard. Please comply
with all warnings and markings to ensure safe use of the equipment. These include but are not limited to:
a) Lifting points b) Flammable Liquids
c) High temperature areas d) Personal Protection recommendations
e) Personal dangers f) Equipment dangers
g) Operating instructions h) Fluid flow direction
SOME EXAMPLES FOUND ON THE EQUIPMENT
Liftin
g
Point
Personal Protection
,
Read and understand O
p
erator’s manual and Maintenance manual
Flammable Li
q
uid Hot Surface
Fluid Flow Direction
Maintenance Instructions
Liftin
g
Point
Safet
y
Instructions
KEEP LID CLOSED
W
HILE MIXING
CLEAN FILTER DAILY

13

14
M-750E
Operators Manual
Congratulations on your acquisition of the time proven M-750 Mixing System. You have acquired the
fastest and most efficient mixing system manufactured for mixing Bentonite drilling slurry (mud). As a
manufacturer of HDD support equipment, we are well aware of the extreme conditions that HDD
equipment is exposed to on a daily basis. Surface To Surface Inc. strives to overcome these conditions,
with better design and manufacturing practices. Please feel free to call our toll free number
(1-800-567-0978) if you have any questions or concerns about your M-750.
Thank you, for choosing the M-750 series mixer.
The M-750 mixing unit was designed to mix dry or liquid drilling products with clean
water, into a slurry. The slurry is continually circulated through the mixing cycle until it
reaches the desired consistency. The operator can then transfer the final product to a holding
reservoir or directly to the drilling equipment.
The M-750 mixing unit consists of a 750 u.s. gal. (2839 litre) polyethylene plastic tank,
electrical powered centrifugal pump, grease filled bearing block, mechanical drive coupler,
filter/shear unit, venturi mixing tee assembly, dry hopper with a table, tank internal jet gun
and a discharge valve to pump the finished slurry to a holding tank or the drill rig. These
components are all mounted on a frame type skid, built for lifting or solid mounting. For ease
of interpretation, looking at the mixing unit hopper straight on will be considered looking at
the front of the unit. Hence the other long side, will be the rear and the ends will be right or
left end.
RECORD OF OWNERSHIP:
Unit Serial No. __________________________________________
Motor Serial No.________________________________________
Pump Serial No:_________________________________________
Tank Serial No:__________________________________________
Date Purchased/Leased:___________________________________
Dealer Purchased/Leased From:_____________________________
Special Custom Features:__________________________________

15
REV.
DATE.
DWR. NUM.
* Due to our continuing product improvement, specifications are subject to change without notice. *
Surface to Surface Inc.
(Height 73.0")
GRINNELL
7611-3
92.0"
90.0"
M-750E(GR) (Electric)
SR-750E(GR) 05 / 03 / 10
COMPLETE DRY WEIGHT
2250 lbs.

16
Features and Benefits M-750E Mixer
The M-750E with its rectangular loaf shaped Roto-Mold tank, is a space saving design with almost square footprint
dimensions. Powered by an 20 hp Teco/Westinghouse® electric motor, driving a 4 inch centrifugal pump, making
effective use of the proprietary StS mixing system, this Bentonite Mud Mixer is capable of providing 750 gallons of full
yield mud to your drill rig in less then eight (8) minutes. Added benefits to this unit include the ability to draw water from
a second tank and send mud to your drilling rig or storage tank without the use of a second pump. Other power drives
available.
Surface to Surface Inc.
Specifications M-750E Mixer Benefits
Dimensions 92”W x 90”L x 75”H Fits any 8’ flat deck and makes efficient use
Approx. Weight 2250 lbs. of available space.
Hopper Height 39 inches high Waist high hopper reduces back strain.
Mixing System 4” Proprietary StS Mixing System Fast, efficient mixing time ( 8 min. mix ).
Mixing Tank 750 gallon Roto-Mold Polyethylene Minimal maintenance required.
Skid frame 5” Steel Channel, Welded Built for the rigors of the construction trade.
Electric Motor 20 HP Teco / Westinghouse® 360V/460V Industrial rated for longer service life.
Pump 4” Cast Iron Centrifugal Trash Pump Rugged & Repairable for extended service life.
Pump /Motor Connection Bearing Block to Lovejoy® Coupler Large bearings & oversized coupler (service
life)
Pipe Couplers Bolt and Snap –Groove Type Provide fast cold weather maintenance.
Pressure Wand Hopper Maintenance Wand Removal of blockages caused by additives.
Tank Drain Bottom Tank Drain Supplied Provides fast cold weather tank drainage.
Also available in Hydraulic (M-750H) - Diesel (M-750D) - Gasoline (M-750G) models.
 All Specifications Subject to Change Without Notice 
Bentonite Mud Mixer
Model M-750E
Surface to Surface Inc.
5150 Forest Road, R.R.#3, Watford, Ontario, N0M 2S0
Tel: [phone]
Check our website for the latest products and specifications
www.stsmixers.com
05/03/10
Electric
GRINNELL
7611-3
92.0"
9
0.0
"

17
M-750E
Identifying Your Machine & Components
Location of Tags and PIN Plates

18
SECTION #II
Description, Care and Maintenance

19
M-750E
Description, Care and Maintenance
Polyethylene Plastic Reservoir Tank (750 us. gal)
Maintenance of this tank is required, but is simple. The tank should be cleaned on a regular basis by opening
the drain cap on the tank tee, located at the bottom right end of the tank (see Fig.1) and or open the
customer installed bottom tank drain (see Fig.2) and rinse the tank with clear water. Residue such as leaves,
stones, etc can be removed using a wet /dry vacuum.
All tank ports are of a threaded type bung (see Fig.1) with rubber gaskets. If a leak is noticed between
the tank and gasket, the connection can be tightened up by tightening the large nut flange in the direction of
the arrows (counter clock wise).
CAUTION
NEVER OPERATE THE MIXING
unit with the tank lid open.
If viewing is necessary, open
only the small inspection
vent cap in the center of the lid.
CAUTION
BEFORE LIFTING OR MOVING THE UNIT,
all fluid should be removed from the tank.
CAUTION
TO ENTER THE TANK is not recommended
Personal injury could result from
the presents of hazardous fumes,
remaining fluid or unit start-up.
Fig.1
DANGER
NEVER ATTEMPT REPAIRS
OR DISASSEMBLY
without shutting off the motor and
disconnecting/lock-out the power source.
Serious personal injury will result.

20
M-750E
Description, Care and Maintenance
Polyethylene Plastic Reservoir Tank (750 us. gal)
INSTALLATION OF (CUSTOMER INSTALLED) TANK DRAIN
Find a suitable location on the tank floor for the drain to be installed, taking into consideration the
placement of the unit on a trailer. LOOK under the deck for obstructions (cross-members, wiring, and axles,
ect.) Allow room for a shut off valve.
Drill holes into floor of tank using the top (inside) portion of the drain as the template.
Make sure the holes are free of burs and both surfaces are clean.
Install the drain bung as per FIG 1. Note the gaskets are on the inside and outside of the tank.
Tighten nuts as to slightly squeeze the rubber gaskets.
Cut a hole into the deck of the trailer or truck for the piping and valve to be installed.
Install 2” pipe nipple and valve into tank bung with a sealant on the threads. CAUTION: DO NOT OVER-
TIGHTEN!
The nipple and valve should not extend to far from the tank without a support, as this will cause excess
stress on the threads, drain bung and the tank floor.
Fill with water and check for leaks.
GASKETS
CUSTOMER SUPPLIED
PIPING AND VALVE
TOP
(INSIDE)
BOTTOM
(OUTSIDE)
FIG 1
TANK FLOOR
1 3/4" Ø
IN FLOOR
Fig.2