RGC S20 User manual

S20/S24
HYDRASAW
INSTRUCTIONS
REIMANN & GEORGER CORPORATION
CONSTRUCTION PRODUCTS BUFFALO, NY
P/N 6122064 04/28/15

RGC CONSTRUCTION PRODUCTS PHONE: [phone]
TABLE OF CONTENTS
CHAPTER TITLE PAGE
1 SAFETY........................................................................................................................................1
1.1 Introduction....................................................................................................................................1
1.2 Safety Definitions...........................................................................................................................1
1.3 Power Source and Saw Safety Labels ............................................................................................1
1.4 S20/S24 Saw Safety Rules .............................................................................................................1
2 SPECIFICATIONS......................................................................................................................3
2.1 Introduction....................................................................................................................................3
2.2 S20 Technical Data.........................................................................................................................3
2.3 S24 Technical Data.........................................................................................................................4
2.4 Blade Performance Requirements ..................................................................................................4
2.5 Hydraulic Power Source Requirements..........................................................................................5
2.6 Recommended Hydraulic Oil.........................................................................................................5
2.7 Nameplate and Serial Number Tag.................................................................................................5
3 OPERATION................................................................................................................................6
3.1 Component Pre-Start Checks..........................................................................................................6
3.1.1 Hydraulic System ...........................................................................................................................6
3.1.2 Flanges and Blade...........................................................................................................................6
3.2 Auxiliary Handle Installation .........................................................................................................7
3.3 Starting the System.........................................................................................................................7
3.4 Cutting Procedure...........................................................................................................................8
3.5 Shutdown and Storage....................................................................................................................8
4 INSPECTION AND MAINTENANCE.....................................................................................10
4.1 General Maintenance Rules...........................................................................................................10
4.2 Daily Inspection and Maintenance ................................................................................................10
4.3 Blade Removal and Installation.....................................................................................................10
4.3.1 Blade Removal ..............................................................................................................................10
4.3.2 Blade Installation...........................................................................................................................10
4.4 Arbor Flange Removal and Installation.........................................................................................11
4.4.1 Arbor Flange Removal..................................................................................................................11
4.4.2 Arbor Flange Installation...............................................................................................................11
5 TROUBLESHOOTING..............................................................................................................12
5.1 Locating the Problem Area............................................................................................................12
5.2 Troubleshooting the Saw...............................................................................................................12
6 PARTS LIST................................................................................................................................15
LIST OF FIGURES
FIGURE DESCRIPTION PAGE
2-1 Typical S20/S24 Product Nameplate..............................................................................................5
6-1 S20/S24 HydraSaw Assembly.......................................................................................................16

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1SAFETY
1.1 INTRODUCTION
Your Reimann & Georger Corporation S20/S24 HydraSaw has been engineered to provide sawing performance, long
term economics and safety advantages that no other type can match. However, even a well-designed and well-built saw
can malfunction or become hazardous in the hands of an inexperienced and/or untrained user. Therefore, read this
manual and related equipment manuals thoroughly before operating your saw to provide maximum safety for all
operating personnel, and to get the maximum benefit from your equipment.
1.2 SAFETY DEFINITIONS
A safety message alerts you to potential hazards that could injure you or others or cause property damage. The safety
messages or signal words for product safety signs are DANGER, WARNING, and CAUTION. Each safety message is
preceded by a safety alert symbol and is defined as follows:
DANGER: Indicates an imminently hazardous situation which, if not avoided, will cause death or serious injury. This
safety message is limited to the most extreme situations.
WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It
may also be used to alert against unsafe practices that may result in property-damage-only accidents.
1.3 POWER SOURCE AND SAW SAFETY LABELS
These labels warn you of potential hazards that could cause injury. Read them carefully. If a label comes off or becomes
illegible, contact Reimann & Georger Corporation for a free replacement.
1.4 S20/S24 SAW SAFETY RULES
1. Only trained personnel shall operate the saw or perform repairs. A trained person is one who has read and
thoroughly understands this instruction manual and related equipment manuals and, through training and experience,
has shown knowledge regarding the safe operational procedures.
2. Sawing area must be kept clear of unauthorized personnel at all times. Place barricades or secure the area with signs
and a roped boundary to prevent personnel injury.
3. Never use the saw in an explosive atmosphere and/or near combustible material that could be ignited by a spark.
4. Do not use a saw that shows any signs of damage. Do not use the saw if the blade does not stop rotating when the
power-activating trigger lever is released.
5. The guard provides protection against contact with moving parts, ejected debris, and during wet cutting operations,
thrown water and concrete slurry. Adjust the blade guard for the cut being made. Never run the saw without the
blade guard in place.
6. Never allow anyone to stand in front of, or in line with, the blade forward of the guard.
7. Always use blades that meet applicable safety code specifications. Read and comply with blade manufacturer’s
instructions and safety precautions provided with the blade. Destroy any blade with cracks, chips, gouges, loose or
missing tips.

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8. Always use safety footwear, safety goggles or face shields, and hearing and head protection devices. Safety shoes
MUST provide good footing to prevent slipping or falling down. Gloves protect the hands from chips and should be
worn. During dry cutting operations, also provide adequate ventilation or approved NIOSH or MSHA respirators in
closed areas to avoid breathing dust. During wet cutting operations, also use a snug fitting wet suit. If using the saw
auxiliary handle in a two-person operation, both persons must wear all the safety equipment described above.
9. Do not use the saw when you are tired or fatigued.
10. Never operate the saw under the influence of drugs, alcohol, or medication.
11. Always carry the saw in its de-energized state.
12. Keep the saw handles dry, clean, and free of oil or fuel.
13. This saw is not insulated. Do not start cutting without first de-energizing electrical wiring near the cutting site or
imbedded in any concrete.
14. Prior to cutting, plan your cuts to prevent pinching of the blade or personnel injury from falling material.
15. Always hold the saw with all available handles during operation. Use a firm grip on the handles.
16. Never exceed the maximum flow and pressure rating of the saw which is 8 gpm at 2500 psi.
17. Do not exceed either the maximum operating speed of 1830/1455 rpm for the S20/S24 saws, respectively, or the
blade manufacturer’s rated speed.
18. Do NOT attempt to adjust the saw during operation.
19. Keep clothing and all parts of the body away from moving parts of this saw when connected to a power source or
being used.
20. Any slurry formed during wet cutting operations is very slick. Remove while still wet to prevent yourself or others
from slipping while cutting. Slurry that has been allowed to dry is very difficult to remove.
21. Always shut off the hydraulic power and cooling water sources before disconnecting the hoses or servicing the saw.
Never remove fittings or components when hydraulic fluid is hot.
22. Always shut off the hydraulic and cooling water sources when not using the equipment.

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2SPECIFICATIONS
2.1 INTRODUCTION
Your Reimann & Georger Corporation S20/S24 hydraulic direct drive HydraSaw is a rugged versatile saw that cuts
cleanly, fast, precisely, and straight through concrete, steel, stone, composition material, or hard fiber when equipped
with the appropriate abrasive or diamond blade. The slim line design of the saw allows cuts to be made within inches of a
wall or an obstruction. The saw is equipped with an adjustable blade guard, water hose connection for wet cutting and
12-inch long hose whips. An arbor wrench is provided for removing and installing blades. As with most hydraulic tools,
the hydraulic system requirements detailed in the following sections must be met to support tool performance and
longevity of equipment.
The following features are provided:
12-inch hose whips
Blade drive pin
Trigger actuated water supply
2.2 S20 TECHNICAL DATA
ENGLISH METRIC
Tool Physicals
Weight 37 lbs. (17 kg.)
Length (w/o blade) 31 in. (787 mm)
Length (w/ Blade) 37.9 in. (963 mm)
Width 6.3 in. (159 mm)
Maximum Blade Diameter 20 in. (508 mm)
Arbor Diameter 1 in. (25 mm)
Hydraulic Requirements
Type of System Open-Center
Flow Rate 5-8 gpm (20-30 lpm)
Maximum Pressure Range 2000-2500 psi (138-172 bar)
Maximum Pressure Relief Setting 2500 psi (172 bar)
Filtration 10 microns (nominal)
Back Pressure (Max) 78 psi (5.5 bar)
Hose Length (Max) 100 ft. (30 m)
Couplings 1/2” HTMA flush face
Water Requirements for Wet Cutting Use the flow and pressure recommended by the
blade manufacturer
Operation
Speed @ 5 gpm 1140 rpm
@ 6 gpm 1375 rpm
@ 7 gpm 1600 rpm
@ 8 gpm 1830 rpm
Cutting Depth 7.5 in. (190 mm)

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2.3 S24 TECHNICAL DATA
ENGLISH METRIC
Tool Physicals
Weight 41 lbs. (19 kg.)
Length (w/o blade) 31 in. (787 mm)
Length (w/ blade) 39.9 in. (1013 mm)
Width 6.5 in. (165 mm)
Maximum Blade Diameter 24 in. (610 mm)
Arbor Diameter 1 in. (25 mm)
Hydraulic Requirements
Type of System Open-Center
Flow Rate 5-8 gpm (20-30 lpm)
Maximum Pressure Range 2000-2500 psi (138-172 bar)
Maximum Pressure Relief Setting 2500 psi (172 bar)
Filtration 10 microns (nominal)
Back Pressure (Max) 78 psi (5.5 bar)
Hose Length (Max) 100 ft. (45 m)
Couplings 1/2” HTMA flush face
Water Requirements for Wet Cutting Use the flow and pressure recommended by the
blade manufacturer
Operation
Speed @ 5 gpm 910 rpm
@ 6 gpm 1090 rpm
@ 7 gpm 1275 rpm
@ 8 gpm 1455 rpm
Cutting Depth 9.5 in. (241 mm)
2.4 BLADE PERFORMANCE REQUIREMENTS
Any blade from your supplier must meet the following design criteria. Using blades on this saw that don’t meet these
requirements can cause equipment damage and/or personal injury.
1. Use blades that meet applicable industrial safety code specifications.
2. Use blades that are approved by the blade manufacturer for the material to be cut.
3. Use approved dry cutting type blades in dry cutting operations and approved wet cutting type blades in wet cutting
operations.
4. Do not exceed the maximum operating speed of 1830 rpm for the S20, 1455 rpm for the S24, or the blade
manufacturer’s rated speed. Blades must be speed tested to ANSI B7.1 safety code specifications.

5. When using abrasive blades, always use blades with mounting blotters on both sides. Remove drive pin from arbor
flange before mounting an abrasive blade.
2.5 HYDRAULIC POWER SOURCE REQUIREMENTS
The hydraulic power source must meet the following design criteria.
1. The flow must not exceed 8 gpm and the pressure relief valve must not exceed 2500 psi. Failure to comply could
cause excessive blade rpm and/or overpressurizing the system, resulting in equipment damage and/or personal
injury.
WARNING:
NEVER EXCEED 8 GPM FLOW. BLADE FAILURE MAY RESULT DUE TO EXCESSIVE
SPEED.
2. The hydraulic power source must meet the hydraulic requirements of Sections 2.2 and 2.3.
2.6 RECOMMENDED HYDRAULIC OIL
Viscosity 140-225 SUS @ 100°F (28-45 cSt @ 38°C)
40 min. SUS @ 210ºF (8 min. cSt @ 99ºC)
Flash Point 340ºF min. (170ºC min.)
Pour Point -30ºF min. (-34ºC min.)
Many types of compatible hydraulic oil are available through your local dealer/distributor. As an original equipment
manufacturer, RGC uses a Grade ISO VG 32 hydraulic turbine oil.
Hydraulic oil types are too numerous to list in this manual. If you have any question concerning the type of oil suitable
for HydraSaw operation, please consult your local supplier or Reimann & Georger Corporation for details.
2.7 NAMEPLATE AND SERIAL NUMBER TAG
It is important to identify the saw completely and accurately whenever ordering spare parts or requesting assistance in
service. The saw has a product nameplate that states the model and serial numbers. The saw label should appear as the
sample nameplate shown in Figure 2-1. Record the model and serial numbers for future reference.
HYDRA TOOL
MODEL
SERIAL NO.
GPM PSI
Figure 2-1.
Typical S20/S24 Product Nameplate
MODEL ___________________________________
SERIAL NUMBER __________________________
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3OPERATION
Follow all the safety procedures in Chapter 1 of this manual and in the manual supplied with your hydraulic power unit.
Failure to do this can cause equipment damage and/or personal injury. Make sure you are wearing all your safety
equipment including approved NIOSH or MSHA respirators during dry cutting or a wet suit during wet cutting.
3.1 COMPONENT PRE-START CHECKS
The following components must be checked before you can use the saw safely. Running the saw with an undetected
defect in any of these components will quickly cause equipment damage.
1. Hydraulic system
2. Flanges and blade
3.1.1 Hydraulic System
1. Before making any hydraulic connections, inspect all hoses for leaks and risks of rupture as follows:
a. Inspect each hose for breaks, cracks, worn spots, bulges, chemical attack, kinks or any other damage. Never
stop any detected leak with your hand or fingers. Do not put your face close to suspected leaks. Hold a piece of
cardboard close to suspected leaks and then inspect the cardboard for signs of hydraulic oil.
b. Replace a damaged hose immediately. Never repair the hose.
2. Connect the return (tank) line from the saw return port to the hydraulic power source return port. Then connect the
pressure line from the saw pressure port to the hydraulic power source pressure port. Clean fittings before making
connections to prevent contamination of hydraulic system.
3. Pressure relief valve must not exceed 2500 psi. The pressure relief valve must be located in the supply circuit
between the power supply and tool to limit excessive hydraulic pressure to the tool.
3.1.2 Flanges and Blade
1. Inspect the flange and arbor flange for gouges, hairline cracks, and wear. Replace these flanges immediately if any
of these conditions are present as described in Chapter 4.
2. Be sure flanges are clean and straight so blade will run true on sides.
3. Always use the blade recommended by the blade manufacturer for your application. Use approved dry cutting type
blades in dry cutting operations and approved wet cutting type blades in wet cutting operations.
4. Inspect the blade for cracks, chips, gouges, or loose or missing tips. Destroy the blade if any of these conditions are
present.
5. Ensure a blade is installed to blade manufacturer’s specified direction of rotation. Saw rotation is clockwise as
viewed from the blade side of the saw.

3.2 AUXILIARY HANDLE INSTALLATION
The auxiliary handle for the S20 and S24 saws provides ease of cutting in the horizontal plane. The second operator
shares the overall weight and can aid in feeding the saw into the workpiece. This maintains a straight cut. Whenever a
two-person operation is required, install the auxiliary handle as follows. If a two-person operation is not required,
proceed to Section 3.3.
1. Ensure the hydraulic and cooling water sources are shut off before proceeding.
2. Place guard on bench top with decal facing up.
3. Remove wheel bracket hardware from the blade guard. The wheel bracket cannot be used with the auxiliary handle
installed.
4. Place the two-grip section over blade guard and align the two tabs with the matching holes in blade guard. Fasten
with provided hardware.
5. Slide the single grip with splashguard section into the two-grip section and align the two tabs with the matching holes
in blade guard. Fasten the single grip section to the guard with the provided hardware. Fold the flaps of the pre-
installed splashguard to pass the bolt through the flap mounting holes in addition to the blade guard and section
holes.
6. Position this assembly over the saw frame. Choose the desired position of the guard on the saw. Then align the two
appropriate blade guard holes with the two corresponding frame holes. Fasten the blade guard assembly to the frame
with the provided hardware.
7. Route the water supply hose from the three port valve toward the blade guard side. Position it within the blade guard
channel and attach it to the U-tube assembly on the leading edge of the blade guard. Crimp the supplied clamp to the
hose with a pair of diagonal pliers.
3.3 STARTING THE SYSTEM
1. This saw is not insulated. Do not start cutting without first checking for live electrical wiring near the cutting site, or
imbedded in the cutting medium. If power lines are unavoidable, consult power company before starting operation.
2. The following precautions must be observed when lifting the saw:
a. Be sure of your footing.
b. Bend your knees and lift with your legs.
c. Keep hands off trigger to avoid accidental operation.
3. Ensure the power supply is turned off. Adjust the blade guard to provide the best operator protection from the angle
of the cut to be made. To adjust the blade guard, remove the two bolts and rotate the guard to the desired position.
Then refasten the bolts securely.
WARNING:
THE GUARD PROVIDES PROTECTION AGAINST CONTACT WITH MOVING PARTS,
EJECTED DEBRIS, AND DURING WET CUTTING OPERATIONS, THROWN WATER AND
CONCRETE SLURRY. NEVER RUN THE SAW WITHOUT THE BLADE GUARD IN PLACE.
4. Always check the hydraulic flow and pressure rating of the hydraulic power unit before using to prevent equipment
damage. Do not exceed the maximum hydraulic flow rate and pressure of 8 gpm (30 lpm) and 2500 psi (172 bar).
Overspeeding the blade can cause equipment damage and possible personal injury.
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5. Check that the pressure and return hoses are connected properly to the saw and hydraulic power source as described
in Section 3.1.1.
6. Before starting your power supply, read and fully understand the operating manual provided.
7. Use caution when handling fuel for a gasoline engine driven hydraulic power source. Move the hydraulic power
source at least 10 feet from the fueling point before starting the engine. Make sure the gas caps on the hydraulic
power source and fuel can are properly tightened.
3.4 CUTTING PROCEDURE
1. Provide rigid support and “hold down” of piece being cut—both sides of the cut, if practical.
2. If using the saw single-handedly, grasp the auxiliary handle with your left hand. Use the appropriate part of the
handle for making vertical or horizontal cuts. Grasp the trigger with your right hand.
3. In a two-person operation using the auxiliary handle, one person grasps the two-grip section of this handle with both
hands. The other person grasps the single grip section of this handle and the trigger on the saw.
4. Position the saw in the appropriate place to make the desired cut.
5. Disengage the trigger lockout. Then depress (squeeze) the trigger to start the saw. Never exceed the maximum
operating speed of 1830 rpm for the S20 saw, 1455 rpm for the S24 saw, or the blade manufacturer’s rated speed.
6. Feed the rotating blade into the work surface using a straight, steady, constant pressure. Do NOT “bump,” jam or
force the blade into the work surface, or twist the blade in the cut. This can cause equipment damage.
WARNING:
ALWAYS START AND FINISH A SAW CUT WITH THE SAME WIDTH OF BLADE. IF
BLADE TYPE OR WIDTH IS CHANGED, START A NEW SAW CUT. FAILURE TO DO THIS
CAN CAUSE EQUIPMENT DAMAGE AND/OR PERSONAL INJURY.
3.5 SHUTDOWN AND STORAGE
1. To stop the saw, release the trigger.
2. AFTER the blade has stopped rotating, lay the saw on a flat surface.
3. Stop the hydraulic power source following the procedure in the respective instruction manual.
4. Shut off water supply.
CAUTION:
ALWAYS SHUT OFF THE COOLING WATER WHEN THE TOOL IS NOT IN USE. LEAVING
THE WATER RUNNING UNATTENDED CAN CAUSE EQUIPMENT OR PROPERTY
DAMAGE.
5. Clean concrete slurry and debris off saw. Once concrete slurry is dry, it is very hard to remove and may hamper the
operation of moving parts.
6. Disconnect the hoses from the saw.
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