RGC FS20 User manual

FS20
HYDRASAW
INSTRUCTIONS
REIMANN & GEORGER CORPORATION
CONSTRUCTION PRODUCTS BUFFALO, NY
P/N 6122066 05/20/16

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 FS20 Saw Safety Rules ..................................................................................................................1
2 SPECIFICATIONS......................................................................................................................3
2.1 Introduction....................................................................................................................................3
2.2 FS20 Technical Data ......................................................................................................................3
2.3 Blade Performance Requirements ..................................................................................................4
2.4 Hydraulic Power Source Requirements..........................................................................................4
2.5 Recommended Hydraulic Oil.........................................................................................................4
2.6 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 Upright Handle and Ball Transfer Installation ...............................................................................7
3.3 Starting the System.........................................................................................................................9
3.4 Cutting Procedure..........................................................................................................................10
3.5 Shutdown and Storage...................................................................................................................10
4 INSPECTION AND MAINTENANCE.....................................................................................12
4.1 General Maintenance Rules...........................................................................................................12
4.2 Daily Inspection and Maintenance ................................................................................................12
4.3 Blade Removal and Installation.....................................................................................................12
4.3.1 Blade Removal ..............................................................................................................................12
4.3.2 Blade Installation...........................................................................................................................12
4.4 Arbor Flange Removal and Installation.........................................................................................13
4.4.1 Arbor Flange Removal..................................................................................................................13
4.4.2 Arbor Flange Installation...............................................................................................................13
5 TROUBLESHOOTING..............................................................................................................14
5.1 Locating the Problem Area............................................................................................................14
5.2 Troubleshooting the Saw...............................................................................................................14
6 PARTS LIST................................................................................................................................17
LIST OF FIGURES
FIGURE DESCRIPTION PAGE
2-1 Typical FS20 Product Nameplate...................................................................................................5
3-1 Disassembly of Hand Saw..............................................................................................................7
3-2 Assembly of Long Handle Kit........................................................................................................7
3-3 Assembly of Long Handle Kit (cont’d)..........................................................................................8
3-4 Assembly of Long Handle Kit (cont’d)..........................................................................................8
3-5 Assembly of Long Handle Kit (cont’d)..........................................................................................9
6-1 FS20 Hand Saw Complete Assembly............................................................................................21
6-2 FS20 Saw Long Handle Kit...........................................................................................................22

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1SAFETY
1.1 INTRODUCTION
Your Reimann & Georger Corporation FS20 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 FS20 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. If not cutting flush to another surface, do not 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, provide also adequate ventilation or approved NIOSH or MSHA respirators in
closed areas to avoid breathing dust. During wet cutting operations, use also 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 10 gpm at 2500 psi.
17. Do not exceed either the maximum operating speed of 2400 rpm for the FS20 saws 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 FS20 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 diamond blade. The flush design of the saw allows cuts to be made right up against a wall or an obstruction.
The saw is equipped with a guard face, water hose connection for wet cutting and 12-inch long hose whips. 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
1” arbor & (6)5/16” bolts on 3.5” bolt circle blade mounting
Trigger actuated water supply
2.2 FS20 TECHNICAL DATA
ENGLISH METRIC
Hand Held Tool Physicals
Weight 45 lbs. (20.25 kg.)
Length (w/o blade) 25 in. (635 mm)
Width 6 in. (1153 mm)
Height (w/o blade) 13in. (330 mm)
Height (w/ blade) 22 in. (559 mm)
Maximum Blade Diameter 20 in. (508 mm)
Arbor Diameter 1 in. (25 mm)
Broom Handle Flush Cut Tool Physicals
Weight 67.5 lbs. (30.38 kg.)
Length (w/o blade) 28 in. (712 mm)
Length (w/ Blade) 36 in. (915 mm)
Width 31 in. (77 mm)
Height 37 in. (940 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 (19-30 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 8 in. (203 mm)
2.3 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 2400 rpm for the FS20, or the blade manufacturer’s rated speed.
Blades must be speed tested to ANSI B7.1 safety code specifications.
2.4 HYDRAULIC POWER SOURCE REQUIREMENTS
The hydraulic power source must meet the following design criteria.
1. The flow must not exceed 10 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 10 GPM FLOW. BLADE FAILURE MAY RESULT DUE TO EXCESSIVE
SPEED.
2. The hydraulic power source must meet the hydraulic requirements of Sections 2.2.
2.5 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.
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ydraulic oil types are too numerous to list in this manual. If you have any question concerning the type of oil suitable
lier or Reimann & Georger Corporation for details.
sting assistance in
rvice. The saw has a product nameplate that states the model and serial numbers. The saw label should appear as the
sample namepl te shown i ecord the model and seri
Figure 2-1.
20 Product Nameplate
SERIAL NUMBER __________________________
H
for HydraSaw operation, please consult your local supp
2.6 NAMEPLATE AND SERIAL NUMBER TAG
It is important to identify the saw completely and accurately whenever ordering spare parts or reque
se a n Figure 2-1. R al numbers for future reference.
Typical FS
MODEL ___________________________________
HYDRA TOOL
MODEL
SERIAL NO.
GPM PSI

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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 flush cut 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 flange is clean and straight so blade will run true.
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 LONG HANDLE AND BALL TRANSFER INSTALLATION
The long handle assembly and ball transfers for the FS20 saw provide ease of cutting in the horizontal plane and when
cutting flush against the ground.
1. Ensure the hydraulic and cooling water sources are shut off before proceeding.
2. Refer to figure 3-1. Disconnect the quick disconnects for the hydraulic lines (items #21 and #22). Disconnect the
water line from the quick disconnect on the motor and guard body (item #36). Remove the handsaw handle assembly
by removing (2) 1/4-20 hex head cap screws (item #10). Remove the guard face from the guard body (item #30) by
removing 3/8-16 hex nut (item #38) and (2) 5/16-18 hex head cap screws and hex nuts (items #37 and #42).
Figure 3-1
Disassembly of Hand Saw
3. Refer to figure 3-2. Attach the long handle brace (item #61) to the long handle assembly (item #54) and fasten into
place using provided hardware (items #10 and #12).
Figure 3-2
Assembly of Long Handle Kit
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Refer to figure 3-3. Slide the two legs of the long handle (item #54) into the angled mounts on the back of the long
handle motor and guard assembly and place the hole of the long handle brace onto the threaded stud (item #38). Fasten
the legs into the mounts using two clevis pins. Fasten the long handle brace to the long handle motor and guard assembly
using a 3/8 hex nut (item #43).
Figure 3-3
Assembly of Long Handle Kit (cont’d)
4. Refer to figure 3-4. Attach the outer ball transfer mount (item #62) to the sides of the long handle motor and guard
assembly (item #30) using the provided hardware (items #37, #42 and #43) and slide side ball transfer mount
assemblies (item #60) into outer ball transfer mounts (item #62). Slide rear ball transfer mount assembly (item #61)
into rear ball transfer mount located on long handle brace (item #61). Screw the 2 hand knobs (item #53) into the
outer ball transfer mounts (item #48). Screw the remaining hand knob (item #53) into the rear ball transfer mount
located on the long handle brace (item #61). Adjust to desired height and fasten in place by tightening the hand
knobs (item #53).
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Figure 3-4
Assembly of Long Handle Kit (cont’d)