In most cases, when a 120 grit tool is used and the surface is not leaving the smooth finish that is normally left behind after using a 120 grit tool it is because of skipped processes. It is required of the customer to use a 70 grit accessory in between the 30 grit grinding and the 120 grit grinding to remove the 30 grit scratch marks. The proper steps are 30 grit, 70 grit then 120 grit. 

We currently manufacture only one machine that can polish concrete, which is our Dual-Disc Heavy Duty grinder (2D-HDP or 2D-HDE). Our low speed and turbo grinders will not competently polish concrete, these machines do not have the weight, speed or disc layout required for concrete polishing. The standard slow speed and turbo grinders can be used however to refurbish, refinish or re-purpose concrete by following the chart below. 

Magna-Trap Tooling can be used on classic style wood edge EDCO Grinders with the use of the Magna-Trap retrofit kit.

The Magna-Trap retrofit kit allows customers with a wood wedge style grinder or "classic" style grinder to adapt their machine to accept the EDCO Multi-tooling disc which accepts Magna-trap low profile accessories as well a multitude of other trapezoidal accessories. To see a break down of the retrofit kit, download this PDF.

There is not a scientific method to removing the bolts holding the disc on to the machine.
There are many different reasons why the disc seems "seized" on to the disc mounting plate. There could be concrete slurry (dust & water mixture), rust or something else acting as a locking substance keeping the mounting hardware from coming loose.

The best method we have seen customers use to remove the disc mounting hardware is to use a bolt extractor (Easy-Out). If this doesn't work, we have seen customers drill the screws out to remove them. Also, customers heat up the hardware and this helps loosen the mounting hardware for easier removal.

The best way to prevent this from occurring is to wash/clean the grinding disc assembly after every rental/use.

We set the belts on our machines with approximately ¼" to ½" of belt deflection. If the belts are too tight it will cause strain on the motor/engine and in some cases not allow the motor/engine to start its rotation cycle.

Every EDCO machine is different when it comes to maintenance.

Please visit our Parts Lists & Manuals page for the machine-specific parts lists and operators manuals. This where you will find information on how to tension the belts and align the pulleys on your EDCO machine.

EDCO machines feature primarily Baldor and Leeson motors which can be configured to run with 115v or 230v power sources. Most of these motors have a diagram depicted on the outside of the motor case, normally located near the junction box. These diagrams have different schematics locating the required connections for High Voltage (230v) or Low Voltage (115v). Ensure you have checked the polarity of the motor before adjusting the motor to guarantee that it remains in the same polarity once this adjustment is completed.

Also, ensure the plug on the cord from the switch of the EDCO machine is rated for the voltage increase if adjusting from 115v to 230v. Most of our machines wired for 230v feature a twist-lock plug combination rated for 250v (#40037 & #40000)

Based on your serial number of the machine, please see the below parts list addendum that shows the parts required to put a dust skirt on the classic style EDCO grinders manufactured between 1991 and 2005.

Yes. See this PDF file for the parts diagram and retrofit instructions.

Based on our customer feedback and data, we have collected that our 33 Lb. propane tank (#50473) operates under normal operating conditions for approximately 1.5 hours. Our 20 Lb. propane tank (#15130) operates under normal operating conditions for approximately 1 hour.

Gasoline or propane-powered equipment should not be used in enclosed or partially enclosed areas. Gasoline and propane are extremely flammable and poisonous. Small gasoline engines produce high concentrations of carbon monoxide (CO) example: A 5HP 4 cycle engine with operation in an enclosed 100,000 cu. Ft. area (100' x 100' x 10') with only one change of air per hour is capable of providing deadly concentrations of C0 in less than fifteen minutes. The same area with 5 air changes per hour is capable of providing noxious fumes in less than 30 minutes. Please see your machine-specific operator's manual and parts list manual for more information.

Part numbers that are detailed on the capacitor itself will be the best signifier.

However, a rule of thumb for EDCO machines is that the start capacitor is encased in plastic as where the run capacitor is encased with a metallic material. Another distinguisher between the two capacitors is the "uF" rating on each of the capacitors, a start capacitor has a much higher uF rating than a run capacitor.

The best calculator for generator requirements is to triple the horse power of the machine and that is the suggested kW of the generator you should use with your EDCO machine. Our TG-10 grinder has a 5 hp electric motor on it, which we recommend is paired with a 15 kW generator.

Ensure that the calculated kW is dedicated to the particular machine. Do not attempt to plug a grinder and a vacuum to the generator when the generator is only rated to operate the grinder. This can cause damage to both of the machines by under powering the machines and starving the motors for power causing the motors to overwork and burn through its capacitors and potentially damage the internals of the motor.

If you replacing the contactor only, ensure you have the color of your existing contactor, as you must replace it with the same color contactor. If you have an older style Baco brand e-stop these are no longer available and must be replaced by a Lovato part (See the diagram below). The contactors on the Baco switches are replaceable and we still carry some of these parts in our inventory, however, the switch button itself is not replaceable and we recommend obtaining the retrofit kit (#51423) described below.

Some EDCO saws are designed and have the capability to make multiple cuts with one pass. What is required to set up multiple blades in an additional blade guard, blade retaining cap, arbor nut, arbor washer, and additional parts required to deliver water to the additional blade guard. The EDCO current machines that are capable of parallel or multiple blade cutting are DS-18, SS-20, SS-24, SS-30.

We also offer custom-designed blade guards for customers who need to cut with 2-3 blades on the same side of the machine with spacing in between the blades. If you have any questions about this please contact EDCO's technical support. techsupport@edcoinc.com

There are times that the mechanism responsible for engaging the drive system on the saw is not tightened completely. Ensure that the hardware pictured below is fastened tightly, if there is looseness present it is not going to work properly and allows for the lever to be moved and not engage the drive linkage. If this is the case, tighten the hardware and make sure the linkages are set properly so that when the lever is in the neutral position that the saw does not move in forward or reverse.

The main cause for the pump not activating upon engaging the switch is that the switch has become disconnected from the wiring harness. See the picture below for a visual of where to check to ensure proper connection between the three wires from the wiring harness to the switch. If one of the features (movement up or movement down) is disabled but the other feature still works, it could be one of the wires on either side of the center wire. If the center wire is detached there will be no power to the switch.

If the hydraulic system does not release the machine down out of the raised position, check to ensure the black box (circled in blue below) is getting power.

The set screw (circled below in red), is the adjustment setting for the pressure of the hydraulic system. If the system is not raising the machine or struggling to raise the machine, fine adjustments can be made to this screw.

The toggle switch on the blade saver has to be in the dry position to start the saw. DO NOT flip the Blade Saver toggle switch to Wet Cut until water pressure has been applied and the engine has been started. This does not apply to the SS-30E.

EDCO self-propelled saws have a linkage system between the drive lever and the transmission that require fine adjustments during initial assembly. In some cases, the linkages become loose and can cause the issue you may be experiencing. See the picture below, ensure that the control arm mounted to the transmission is in the neutral position when the lever on the console is in the neutral position and that all mounting hardware is fastened tightly.

EDCO C-10 has the optional straight cut wheel kit (#49015) which is available for purchase. This kit mounts in front of the caster wheels near the front of the machine and elevates the machine past the point where these caster wheels contact the surface, allowing the machine to track in a straighter fashion and for easier transportation.

Per Table 1, Specified Exposure Control Methods When Working with Materials Containing Crystalline Silica, to be OSHA compliant with an EDCO Masonry Saw, "the saw must be used with the integrated water delivery system that continuously feeds water to the blade."

We recommend going directly from pan to bag when using our vacuums and disposing of these bags in an approved location. The most important part about concrete dust disposal is disposing of the dust in proper thickness bags to avoid bags from becoming damaged and leaking hazardous dust clouds. We do offer 6 mil bags for purchase (ED970503).

There are several filter options on modern EDCO vacuums, the MicroClean filter (white accordion filter), the HEPA 2.0 filter, HEPA MAXX.

For the standard MicroClean filter: Knock the material off of the filter via the hand shaker on the machine, motorized shaker, or reverse pulse. Remove any material between the pleats, by hand only. DO NOT USE ANY PRESSURIZED WATER/AIR EXCEEDING 15PSI on these filters. The best method to clean this filter is to use another vacuum to remove the dust. Inspect the filter for tears or material blockage, if there are tears present the filter needs to be replaced. MicroClean filters should last several years with proper maintenance and care, these filters also feature a 3-year guarantee from the manufacturer.

HEPA 2.0 filters do not have a lifespan rating, as they only capture the smaller particles of silica dust and there is not enough data relevant to the lifecycle of these filters to advise a replacement schedule on these filters. However, as long as these filters are maintained and free of tears this filter does not need to be replaced for several years. Use the same methods from cleaning the standard MicroClean filter to clean the HEPA 2.0 filters.

HEPA MAXX filters are equipped with a differential pressure gauge. The gauge measures the pressure above against the pressure below the filter, thereby measuring the restriction of airflow due to contamination. HEPA filters should be replaced when the gauge consistently measures 8 inches W.C. Consult your operator's manual and parts list for instructions and parts required to replace the HEPA MAXX filter.

EDCO masonry saws are equipped with submersible water pumps; either a belt-driven pump on gas model EDCO masonry saws or electric pumps on electric EDCO masonry saws. These pumps are put through rigorous conditions but have proven themselves over time with proper maintenance and operation. Some common issues we have seen with customers is that:

EDCO does not recommend the repair of any machine while it is suspended by the lifting bail. Never work under equipment without first properly securing the equipment to prevent it from moving or falling and also always work on a flat and level surface.

Based on the 2012 EPA EVAP regulations, we are no longer allowed to offer a vented fuel tank cap. If you are looking to replace a vented fuel tank cap, the new gas tank system is required to retrofit to the current EPA standards. See the below parts bulletin for information.

There are several air powered machines that EDCO offers. Below is a list of requirements for different EDCO machines and their respective air compressor requirements:

CD-3 - 100CFM @ 100 PSI
CD-5 - 160CFM @ 100 PSI
ASB-14 - 180CFM @ 100 PSI
ALR Chisel Scalers - 6-8CFM @ 90 PSI
Big Stick Chisel Scalers - 12-15CFM @ 90PSI

Dual-Disc Grinders: Lubriplate 630-2 Grease
Turbo Grinders: Lubriplate 930-AA Hi-Temp Grease
Motor Oil For Gas Engines: 10W-30
Motor Oil for Diesel Engines: 15W-40
Chisel Scalers Lubrication: Dexron III ATF
Hydraulic Pumps on self-propelled units: Dexron III ATF
Scabbler machine oil: Pneumatic Oil

GX160 - .83 Gallons
GX200 - .83 Gallons
GX240 - 1.4 Gallons
GX270 - 1.4 Gallons
GX340 - 1.6 Gallons
GX390 - 1.6 Gallons
GXV160 - .4 Gallons
GXV340 - .4 Gallons