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STI P/M STI-2418LP, Operating Manual

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STI P/M STI-2418LP Operating Manual Download Page 26

STI-2420 | STI-2418LP

Operating Manual

24

6.2 Failure

Irrespective of the following information, the local safety regulations are valid in any case for 

the operation of the machine. 
Assure all turning machine parts have come to standstill before inspection or maintenance 

work starts. Always arrange the Safety Off as described in Chapter 2.

6.3 

Safety Switch Off

The machine must be set into its “Safety Off Position” before starting any kind 

of maintenance or repair work.

See Chapter 2—Safety Instructions.

6.4 Restart 

All persons in the proximity of the machine must wear safety glasses with 

lateral protection as well as safety shoes. Ear protection may be required. The 

operator is obliged to wear close fitting protective clothing.

See Chapter 5—Initial Operation.

7.0 Maintenance

7.1 Recommendations
7.2  Maintenance and Inspection
7.3 Maintenance
7.4  Regular Wear Parts
7.5  Service Schedule: STI-2418LP

7.1 Recommendations

Prior to any repair work on the machine and its drives, secure the machine 

against unintentional switch-on. Put the machine to its Safety Off Position as 

described in chapter 2.

Failures due to inadequate or incorrect maintenance may generate very high repair costs and 

long stoppage periods of the machine. Regular maintenance is essential. 

Summary of Contents for P/M STI-2418LP

Page 1: ...Operating Manual STI 2420 STI 2418LP STI 2420 STI 2418LP Propane ...

Page 2: ...Substrate Technology Inc 1384 Bungalow Rd Morris IL 60450 USA 1 815 941 4800 1 815 941 4600 Fax www substratetechnology com 07 13 ...

Page 3: ...ath Prep Master Warranty Substrate Technology guarantees that its machines and products are without manufacturing defects The warranty period on machines is one 1 year from the date of sale and the variable speed drive carries a two 2 year warranty from the date of sale Substrate Technology will replace any part that is defective at its own cost within the warranty period This warranty does not co...

Page 4: ...e Type Designation 1 1 Rating Machine Prep Master Grinder Machine Types STI 2420 STI 2418LP Manufacturer Substrate Technology 1384 Bungalow Rd Morris IL 60450 USA 1 815 941 4800 www substratetechnology com 1 2 Unit Specifications STI 2420 Dimensions Length 70 in 177 cm Width 24 in 61 cm Height 50 in 127 cm Weight 734 lbs 332 Kg Connected loads of the electrical system Power 20 HP Electrical Connec...

Page 5: ...of wrong usage the user is responsible for all risks 1 5 Stand by Power Supply Generator If the Prep Master STI 2420 is operated using a generator the generator must be operated in accordance with the current local electrical directives this applies in special to the protective ground conductor in order to ensure that all safety devices are functioning and to be able to eliminate possible damage t...

Page 6: ...instructions must be followed as shown here Failure to do so may result in hazard to health or possible death 2 1 Explanation of Warnings and Symbols The following symbols are used in the operating instructions to highlight areas of particular importance Operational Safety This symbol will be shown in these Operating Instructions next to all safety precautions that are to be taken in order to ensu...

Page 7: ... particular the chapter about Safety Instructions These have to be read before starting any work with the machine This particularly applies to incidental activities such as setting up the machine carrying out maintenance work or training staff to work with the machine From time to time the working practices of the staff are to be checked regarding awareness of safety and hazards Personnel must tie...

Page 8: ... 3 Personnel Selection and Qualification Fundamental duties Only reliable personnel are allowed to work on the machine Only trained personnel can be used to operate the machine Note the statutory minimum age Specify clearly the responsibilities of personnel for operation setting up servicing and maintenance work Make sure that only authorized personnel operate or work on the machine Select clearly...

Page 9: ...he machine Fault must be rectified immediately Start up and switch off operations and control devices have to be handled in accordance with the Operating Instructions All persons in the proximity of the machine must wear safety glasses with lateral protection as well as safety shoes Ear protection may be required The operator is obliged to wear close fitting protective clothing Use only extension ...

Page 10: ...ructions For the machine to be shut off completely for repair or maintenance work the plug has to be disconnected in order to prevent the machine from being switched on accidentally The dust bin of a connected dust collector has to be emptied before transportation Please handle in accordance with the regulation how to dispose the dust and make sure that you meet the local regulations Do not use an...

Page 11: ...ce with the safety regulations during operation and maintenance of safety devices supplied with the machine as well as the provision of appropriate additional safety devices 2 8 Electrical Engineering Regulations Never start machine in the tilted position The machine must only be started when all guards and dust collection parts are attached and machine is standing flat on work surface Work on the...

Page 12: ...ols for your work Damaged tools have to be repaired immediately or to be replaced Use during your work for your own safety the required safety equipment and safety clothes e g safety glasses safety shoes safety gloves Please instruct your operators and the repair personnel about the following points Cleaning and repair work are only allowed if the machine is shut off safety off position During wor...

Page 13: ...e Maintenance 3 1 Operative Range The STI Prep Master STI 2420 STI 2418LP is a grinding machine with counter rotating heads that is used for preparation and polishing of horizontal surfaces Grinding the surface according to STI specifications thoroughly removes surface contaminants coats of paint sealants and thin coatings A suitable filter unit must be connected to the machine in order to thoroug...

Page 14: ...STI 2420 STI 2418LP Operating Manual 12 3 3 STI 2420 Electric Model Exploded Diagram Part Numbers ...

Page 15: ...Valve 109 2 2420 109 Handle Caster 110 2 2420 110 Main Caster 111 1 2420 111 Axle 112 2 2420 112 3 in Vacuum Hose 25 ft 113 1 2420 113 Rubber Dust Band 114 4 2420 114 Handle Grips 115 4 2420 115 Rubber Isolation Mounts 116 2 2420 116 Clevis Pin 117 1 2420 117 2420 Prep Master Handle Assembly 118 2 2420 118 Pocket Weights 119 1 2420 119 Stainless Steel Adjustable Shroud 120 2 2420 120 Adjustable Sh...

Page 16: ...STI 2420 STI 2418LP Operating Manual 14 3 4 STI 2418LP Propane Model Exploded Diagram Part Numbers ...

Page 17: ...SIONER PULLEY 3 ASM 16 4 WEIGHT BASKET WEIGHT BASKET 17 3 NB049300 SCREW FLANGE 1 4 20 X 1 2 ZINC 18 1 MP345001 PLATE SPACER TENSIONER 19 1 MP344601 BRACKET ENGINE 20 1 MP344101 BRACKET WATER TANK DASH 21 1 MP120500 BRACKET MUFFLER MEAN MACHINE 22 3 NB9845 NUT KEPS 1 4 20 23 1 Handle PREP MASTER HANDLE ASM 24 1 MP041100 STRAP TANK 25 1 MP344800 ENGINE KAW 18HP PREP MASTER ASM 26 1 MX1080 WASHER FL...

Page 18: ...ANEL MOUNT 5 4 NB9510 NUT SPIN LOCK 10 24 6 1 MP246100 CABLE THROTTLE 62 7 1 MP344700 DECAL DASH PREP MASTER 8 1 MP345100 MODULE SAFE SENSE BASIC ASM 9 2 NB008600 SPACER NYLON 50 O D 25 I D 1 L 10 2 NB027500 SCREW 10 24 x 1 1 2 SS 11 2 NB034100 SCREW PAN HD 10 24 X 1 2 SS 12 1 MP341100 SWITCH KILL ENGINE W LANYARD 13 1 SA023400 LED REPLACEMENT KIT 3 5 STI 2418LP Controller Exploded Diagram Part Nu...

Page 19: ...to change the motor rotation To change back to previous rotation repeat the process Auto Man and Prog Run These buttons are used for drive diagnostics and programming and are not used Emergency Stop Button The Emergency Stop Button is intended to be used for the safety of the operator and protection of the machine from excess damage in the event of an emergency The Lanyard must be worn by operator...

Page 20: ... in place for the grinding application 3 11 Variable Speed Drive The variable speed drive is responsible for monitoring incoming power as well as changing the electronic frequency to allow the motor to run at different speeds This unit is a closed panel that is intended to be operated only with the keypad 3 12 Tool Change In order to change the tools the operator must first ensure that the grinder...

Page 21: ... 1 General Notes 4 2 Transportation 4 3 Transportation by Vehicle 4 4 Operation Conditions 4 1 General Notes Before the machine used for the first time STI authorized dealers offer a course to familiarise maintenance and operating personnel with all elements of the machine We are not liable for damage caused by incorrect use of the machine by personnel not trained by STI 4 2 Transportation In orde...

Page 22: ... strap to the cabin wall of the vehicle Make sure that all parts of the machine are fixed 4 4 Operation Conditions Check the surface to be treated for loose parts stones screws etc The surface must be swept if necessary Make sure that the machine can travel over all inequalities on the surface Small inequalities like floor joints less than inch are no barriers for the machine The machine must be o...

Page 23: ...ing the removed material Check the electrical connections for dirt and foreign body deposits Check the motor for dirt and other contaminants Before start up operators and other personnel must be familiar with the safety regulations given in this manual 1 Place the grinder in the area where work is to begin 2 Place weights on grinding head beside motor 3 Check the main power cable and the dust hose...

Page 24: ...in flatness and profile 6 When grinding in work area is complete push the Stop button to stop the grinding motor 7 The dustbin of the filter unit needs regular dumping Do not overfill the bin to avoid dust exposure when opening the bin Comply with the local waste treatment regulations considering the removed material 5 3 Initial Operation STI 2418LP All persons near the machine must wear safety gl...

Page 25: ...ilter unit needs regular dumping Do not overfill the bin to avoid dust exposure when opening the bin Comply with the local waste treatment regulations considering the removed material 6 0 Operation 6 1 Daily Operation 6 2 Failure 6 3 Safety Switch Off 6 4 Restart 6 1 Daily Operation Normal start up and operation of the Grinder is not different as has been described in Chapter 5 Initial operation C...

Page 26: ...n the proximity of the machine must wear safety glasses with lateral protection as well as safety shoes Ear protection may be required The operator is obliged to wear close fitting protective clothing See Chapter 5 Initial Operation 7 0 Maintenance 7 1 Recommendations 7 2 Maintenance and Inspection 7 3 Maintenance 7 4 Regular Wear Parts 7 5 Service Schedule STI 2418LP 7 1 Recommendations Prior to ...

Page 27: ...glad to give you advice 7 2 Maintenance and Inspection Operating Hours Time Period Inspection Points Maintenance Instructions Daily Prior to Operation Check all cables wires for cuts or damage Check the hose connections for tightness and fixed seat Check the hose to the filter for damages Make sure that the dustbin of the filter has been dumped Check Morflex Coupler tool plate and diamond tooling ...

Page 28: ...entional switching on Pull out the main plug in order to do this Store the plug near the machine to avoid accidents 7 4 Regular Wear Parts Regular wear parts consist of the Morflex Coupler To replace a worn or damaged Morflex Coupler perform the following 1 Remove inch 20 bolts from drive plate using a inch impact wrench and inch socket 2 Use pry tool to remove assembly from drive plate 3 Remove i...

Page 29: ...n Engine dust filter Inspect pad driver Change Engine Oil Change engine oil filter Check clean primary air filter Check secondary air filter Inspect battery and battery connections Replace Engine primary air filter Replace Engine Pre filter Inspect clean re gap spark plugs Replace if necessary Check adjust valve clearance Retorque heads Clean lap valve seating surface Check engine emissions Check ...

Page 30: ...d tool is firmly seated to holder Unusual Noise Uneven or loose surface be ing ground Verify suitability of substrate being ground Loose or damaged tooling Inspect tooling to make sure that all connecting hardware is tight and tool is firmly seated to holder Shroud is dragging on the floor Adjust shroud and tighten to no more than inch above floor Reduced performance or no performance Diamond tool...

Page 31: ...rdance with the electrical engineering regulations Failure Possible Reasons for the Failure Corrective Actions Motor does not start up Missing Phase Battery Fail ure Check power supply or battery power Faulty Switch or relays Get diagnosis and replacement by a skilled electrician Emergency Stop Kill Switch Unlock the Emergency Stop Kill Switch button Motor stops during oper ation Current power is ...

Page 32: ...y that is Concrete Surface Preparation and Polishing These products are proprietary original creations that are made to work consistently so that you have success on your first and every concrete grinding or polishing project thereafter 9 2 Why a Diamond Cuts A diamond s ability to cut is directly influenced by weight speed and diamond size As any one of those factors are reduced or increased the ...

Page 33: ... be too great or too little the more diamond chips touching the floor the less the pressure on each chip and vice versa 3 The matrix strength may be too strong to release the diamonds at a consistent rate to always allow a fresh diamond chip to become exposed to the work piece 4 The speed at which the diamond tool is being moved across the surface may be too fast or too slow for its design thereby...

Page 34: ...tooling should be costing the equipment owner between 03 05 per square foot for each type of diamond tool being used So if there is a project that requires 4 polishing steps the diamond cost should be 12 20 per square foot 03 05 per square foot per diamond type x 4 total types overall This is a general guideline but it is important to always strive for tool choices that yield close to this amount ...

Page 35: ... is tight to keep tool from loosening Also make sure that the tool plate as well as the diamond segment is clean where they meet to ensure the flattest possible cut If the surfaces have build up the diamond tool will cut at an angle that will essentially be gouging the surface of the concrete rather than grinding across it 9 9 Recommended Weight Configurations The Prep Master machines come with th...

Page 36: ...ortant to mention densifiers here because if a densifier is omitted from a polishing process that surface will NOT be permanent 9 12 Choosing the Right Diamond Tool for the Application Using the correct diamond tooling for a specific application is the most important part of ensuring productivity and an acceptable cost per square foot lifespan for the specific tool With that said predicting which ...

Page 37: ... Bonded Tooling 1 3TERZ Pad The Terrazzo polishing pads were made to cut well terrazzo However after some experimenting we found that the Terrazzo pads also work well for cutting concrete whether new or old The great thing about the Terrazzo pads is that they cut like crazy but leave a super fine scratch pattern New Unsealed Concrete Terrazzo pads are a first cut tool for new hard troweled concret...

Page 38: ...minimum 120 grit metal finish 3 REZ MET Pad For use after minimum 70 grit grinding application Grits 35 50 100 Life 5 000 SF 500 m2 Speed 45 Hz 2 700 RPM 4 Premium Plus Pad For use after 100 Terrazzo pad 100 grit after surface has been cleaned and allowed to dry Grits 35 50 100 200 400 800 1500 3000 Life 4 000 SF 400 m2 Speed 60 Hz 3 200 RPM Special Application Tooling 1 Carbide Scrapers This tool...

Page 39: ...eing used See Choosing the Right Diamond Tool for the Application It s also worth noting that in most cases underlayment is a relatively soft material that places more drag on the motor than a grinding or polishing process So varying the placement of the weights on the head or handle may be necessary depending on material softness and desired productivity Another indicator of an overload is the di...

Page 40: ...Substrate Technology Inc 1384 Bungalow Rd Morris IL 60450 USA 1 815 941 4800 1 815 941 4600 Fax www substratetechnology com ...

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