STS M2-H User manual

Surface to Surface Inc. ®
Operators Manual
** M2-H **
USE IN CONJUNCTION WITH OEM MANUALS (ENCLOSED)
Unit Serial No. _______________
Hydraulic Motor
SNM2/11C106
Gorman-Rupp® Pump
STS-GR82E2 – Serial No. ________________
Control Valve
Serial No.__________________
Links relating to this Manual
www.stsmixers.com
www.grpumps.com
STS-102 Rev. 08/24/18 www.stsmixers.com
Dealer

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3
TABLE OF
CONTENTS
PAGE
STS Inc. Warranty ……………………………………………………….... 6
Safety Statements ………………………………………………..………… 7-10
Safety Markings …………………………………………………………… 11
Hydraulic Connections / Schematic…………………………...…………. 12
Main Working Components (Photo) ……………………………………… 13
Hose Connection (Hook-up) …………….…………………………………. 14
Introduction to the M2-H ……………….…………………………..……. 15
M2-H Foot Print (top view) ……………..………………………………… 16
M2-H General Data Sheet …………..……………………………………. 17
Identifying Your Machine & Components ……………………..….……. 18
SECTION II (Description, Care and Maintenance)
Hydraulic powered centrifugal pump …………………………………. 20-23
Filter shear system ……...……………………………………………. 24-25
Venturi mixing tee …………...………………..………..……………. 26
Wash wand ……………………………………………………...……. 27
Dry hopper & hopper valve ……………………………………..…… 28
Internal tank jets …………………………………...………………… 29-30
SECTION III (Set-up and installation of unit in Detail)
Permanent mounting of unit …………………………...…………….. 32
Portable use of unit …………………….…………………….………. 32

4
TABLE OF
CONTENTS
PAGE
SECTION IV (Operating the M2 Unit.)
Site set-up and pre-check …………………………………………….. 34
Starting the hydraulic driven 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
SECTION V (Trouble shooting)
Trouble Shooting the M2 ……..………..……….….…..……..……… 42-43
SECTION VI (Periodic Maintenance & Repair Information)
Maintenance Schedule …………………….….………………….…... 45
Centrifugal Trash Pump Seal Replacement ………………………..… 46
Bolt torque Specifications …………………………………….……... 47
Notes …………………………………………………….…………… 48

5
TABLE OF
CONTENTS
PAGE
SECTION VII (OEM Repair Information)
GR Centrifugal Pump Owner’s Manual (condensed) ….……………… 50-61
Gruvloc® Pipe Couplings ……………………….……...………..…… 62-64
Sauer Danfoss Hydraulic motor …………..…….….….….….….……. 65-67
SECTION VIII (Parts Manual)
M2-H PARTS MANUAL ……………………….……………………. 69-71

6
Limited Warranty
United States and Canada
Surface to Surface Inc. or its 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

7
M2-H
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.

8
M2-H
SAFETY STATEMENTS
The following caution statements have been drawn from the instructions in this manual. They
have been assembled here for ready reference.
DANGER
INANEMERGENCY
DANGER
NEVER ATTEMPTREPAIRS
OR DISASSEMBLY
WARNING
NEVER USE BODY PARTS,
OR FOREIGN OBJECTS
inanattempt tounplugor clean the
hopper valv e or mixing tee.
Ser ious personal inj ur yor
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
overthehopper,valve,
or mixingtee while cleaning.
rotate the flow control val ve
lev er to the STOP position
to halt the pump, and fluid fl ow.
without shutting off the hydr aulic
power source.
Serious personal inj urywill result.
CAUTION
WHEN THE UNIT
IS INOPERATION,
the fluid i n the piping mayre ach
pressures upto50 p.s.i.

9
M2-H
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 remov ed.
CAUTION
AVOID ALLOWINGFOREIGN MATERIAL
into the Venturi Mixing Tee thru the
Hopper, bykeeping the val ve closed
when not in use.
CAUTION
NEVER LEAVE LIQUIDINTHE
PUMP CASING, PIPING, OR HOSES
duri ng freezing weather conditions,
as damage will result.
Foll ow instruction for winteriz ing.
CAUTION
CAUTION
CARE MUSTBE TAKEN WHEN
INS TALLING THE COUP LER GASKE TS.
If the gask ets are not pr operly lubricated
and installed, a leak may develop.
CAUTION
IMPROPER INSTALLATIONOF THE
MECHANICAL or GREASE SEAL
will result inleakage andpossible
damage to the seal. All maintenance,
operating and repair of this unit, mus t be
done per the instructions inthe operators
manual for safetyandreliability.
CAUTION
WHENTRANSFERRINGFLUID
tothe drill rig, fluidpressure may
reach or exceed 50 p.s.i.
CHECKthe drill rigmanufacturers
specifications regardingmaximuminlet
pressures allowedfor their pump.
BEFORE STARTINGOR RESTARTING
the hydraulic motor and c entrifugal pump,
make sure anyv alves installedon the
pump suction inlet line are open, and
the fluidlevel in the tank is above
the suction line.
CAUTION
BEFORE STARTINGTHE HYDRAULIC MOTOR,
BE SURE THE PUMP IS PRIMED!
Check the pumpbyslowly& 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 plugtov iewinside fluidlevel.
The centrifugal pump seal WILL be
damagedif allowedtocavitate or rundry.

10
M2-H
SAFETY STATEMENTScontinued
The following caution statements have been drawn from the instructions in this manual. They
have been assembled here for ready reference.
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 dryadditive, into a
liquid stream.
Other uses maycreate unforeseen safety
issues andpersonal injuryrisk.
CAUTION
LIFTING LUGS OR THE LIFTING POINT(S)
identified andlabelledonthe skid
structure must be used in order to
safelylift and transport the unit.
WARNING
REFERTOTHESAFETY
STATEMENTS IN THE
OEM SUPPLIED MANUALS
AND
THISMANUAL
REGARDING THESE
OPERATIONS.

11
M2-H
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) Personal Protection recommendations
c) High temperature areas d) Equipment dangers
e) Personal dangers f) Fluid flow direction
g) Operating instructions
SOME EXAMPLES FOUND ON THE EQUIPMENT
Liftin
g
Point
Personal Protection
,
Read and understand O
p
erator’s manual and Maintenance manual
Hot Surface
Fluid Flow Direction
Maintenance Instructions
Liftin
g
Point
CLEAN FILTER DAILY

12
M2-H
These guidelines must be followed or warrant will be voided. Any variation needs
to be approved by Surface to Surface®.
SET-UP
Minimum Flow Rate: 10us gpm.
Maximum Flow Rate: 10.3us gpm.
Relief Setting: 2250psi.
Inlet Hose Size: 3/4" minimum
Outlet Hose Size: 3/4" minimum (
direct to reservoir )
Caution:
As the hydraulic oil increases in temperature the hydraulic flow rate will rise
above your set rate of 10 - 10.3 g.p.m. of hydraulic flow. The hydraulic flow valve should
then be set back to the recommended flow rate of 10 – 10.3 g.p.m.
Specifications on hydraulic oil, operating temperature, and filtration can be found
further on in this manual, on the Sauer Danfoss hydraulic motor data sheets.
Any problems or question may be answered by calling Surface to Surface®at
[phone] during normal business hours.
CF
EF
IN
1
2
3
4
5
6
7
8
9
01-20-06
RETURN LINES
PRESSURE LINES
CUSTOMER SUPPLIED
IN FLOW
10.3 usgpm. MAX.
Flow Meter
M2-H
OUT FLOW
TO OIL RESERVOIR

13

14
PUMP INTAKE
[in from Tank]
This line should have a valve installed at
the tank to facilitate shut down or reapirs.
** 2" NPT **
FLUID RETURN
[out to Tank]
This line should discharge above the maximun fill line
of the tank. The air space will stop the siphon action of the fluid.
** 2" NPT **
FLUID OUTLETS
[to Drill Rig & Tank Guns]
** 1 1/2" NPT **
"ALL HOSES SHOULD BE KEPT TO THE SHORTEST LENGHT POSSIBLE TO ACHIEVE MAXIMUN PREFORMANCE."
(Hose Hook-ups)
Surface to Surface Inc.
M2Series

15
M2-H
Operators Manual
Congratulations on your acquisition of the world renowned M2 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 M2
Thank you, for choosing the M2 series mixer.
The M2 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 second
holding reservoir or directly to the drilling equipment.
The M2-H mixing unit consists of a hydraulic powered centrifugal pump, filter/shear unit,
venturi mixing tee assembly, dry hopper, pressure wash wand, and a set of tank internal jets.
These components are all mounted together on a framed skid, built for portability or
permanent installation. 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:_________________________________________
Date Purchased/Leased:___________________________________
Dealer Purchased/Leased From:_____________________________
Special Custom Features:__________________________________

16
33"
38"
REV.
DATE.DW R. NUM.
Surface to Surface Inc.
®
CF
EF
IN 26 1/2"
M2-H (Hydraulic)
M2-H 011 / 17 / 11
Dry Weight: 275 Lbs (125 Kg)

17
Features and Benefits M2-H Mixer
The M2-H universal mixer is designed around the time proven M series mixers of STS. Powered by the customer’s
own power source. A 10gpm. hydraulic motor drives a centrifugal pump, making effective use of the proprietary 4
point mixing system. The M2-H can be used as a new installation or retro fitted into an existing tank. Since the unit is
connected by hoses and not hard pipes, the placement of the mixer to the tank is less restricted and a configuration to
suit the needs of the contractor and available space, are easier to achieve. The small size also makes it a portable,
independent unit that is easier to transport from site to site.
Surface to Surface Inc.
Universal 2” Mixer
Model M2-H
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
Specifications M2-H Mixer Benefits
Dimensions 33” W x 38” L x 26 1/2” H Small space saving footprint.
Weight 275 Lbs Light weight for easy transportation.
Hopper Height & Size 261/2” High Holds ½ of a bag Low hopper height reduces back strain.
Mixing System 2” Proprietary StS Mixing System Fast & efficient with high shearing ability.
Flow Valves Brass and Steel construction Withstand the abuse of daily operations
Skid Frame Steel tube with lifting bale Built tough for the construction trade.
Hydraulic gear motor Requires 10gpm. @ 1800psi Use your own power source, no fumes in truck body
Hydraulic Valve
Hydraulic system
Pump
Variable speed controller
Open loop circuit
2” Cast iron centrifugal trash pump
Allow mixing at various speeds.
Simple, field repairable, less maintenance
Gorman-Rupp 80 series
Pump Coupling Hyd. Motor direct to Bearing Block No expensive couplers or inserts to replace.
Pipe Couplers Bolt & Snap-groove type Fast cold weather draining of system.
Pressure Wand Hopper maintenance wand Removal of build-up caused by additive.
Internal Tank Jets(supplied) Eductor Nozzles (5-1 fluid output) Fast and effective rolling and mixing action.
Mechanical Seal Self- Pressurizing Grease Seal Greaseable seal for more rugged working conditions
Replaceable Wear Plate Hardened plate ahead of Impeller Less wear on internal pump parts and is replaceable.
With a 40 second viscosity, the M2 produces 90 gpm @ 36psi through the nozzle and 52 gpm @ 36psi to the tank
internal jets (5-1 mixing equals 260 gpm of mixing / rolling action in tank) and a discharge rate of 80 gpm @ 36psi
02/19/12
33"
38"
CF
EF
IN
1
2
3
4
5
6
7
8
9
26 1/2"
Hydraulic

18
M2-H
Identifying Your Machine & Components
Location of Tags and PIN Plates

19
SECTION #II
Description, Care and Maintenance

20
M2-H
Description, Care and Maintenance
Hydraulic Powered Centrifugal Pump
Care and maintenance of the hydraulic motor and pump are covered in this manual and/or the
manufacturer operator’s manuals supplied and should be read and understood. We suggest the following
daily checks be carried out prior to using the system. Check the fluid level in YOUR hydraulic reservoir is
sufficient. Check the hydraulic filtering system is working properly. Check the pump seal grease cup is full
(see grease cup instructions Fig.5). Check that any water intake valve(s) are open and the reservoir tank has
sufficient liquid to supply the centrifugal pump.
The pump is mounted directly to a bearing block and the hydraulic motor, so there is no “drive
coupler” to check or maintain. The bearings in the bearing block are factory greased to provide constant
lubrication. The pump is the primary component that will see the most wear due to the nature of the
material it is handling therefore it will require regular checks, adjustments and maintenance.
There is a section of this manual dedicated to the pump itself and should be read and understood
which will help should any problems or concerns arise in the field.
The pump should never be allowed to start or run dry, as this WILL damage the internal pump seal (grease
seal) and render the unit inoperable until the seal is fixed.
To prime the pump or check to visually see if the pump is primed, slowly undo the priming plug (see
fig. 3) on top of the pump and stop after about 3 turns. If the pump is primed, fluid & air will escape from
around the plug threads. This indicates that the pump housing is full, and the plug can be tightened back up.
If no fluid is escaping from around the threads, completely remove the plug & carefully remove the plug.
Drill fluid or water can be poured into this opening to fill the pump cavity, and a visual of the fluid level
inside the pump can be made. The level should be approximately to the top of the pump priming hole.
Another way to prime the pump is to have the tank FULL of fluid, and standing off to the side of the
hopper, rotate the hopper valve SLOWLY to the open position. As the valve is opened, you will hear air
escaping followed by fluid, into the hopper itself. Close the valve as the fluid enters the hopper. This means
the fluid in the tank has filled the pump cavity of the pump and flowed from the outlet of the pump to the
remaining piping on the unit.
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.
Fig.3
DANGER
IN AN EMERGENCY
rotate the flow control valve
lev er tothe STOP position
to halt the pump, and fluid fl ow.
DANGER
NEVER ATTEMPT REPAIRS
OR DISASSEMBLY
without shuttingoff the hydraulic
power source (customer supplied)
Serious personal inj ury will result.
CAUTION
BEFORE STARTING THE HYDRAULIC MOTOR,
BE SURE THE PUMP IS PRIMED!
Check the pump byslowly& 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 v iew inside fluid lev el.
The centrifugal pumpseal WILLbe
damaged if allowed to cavitate or run dry.