Rongpeng 27621 Instruction Manual

1
Air Hammer 27621
Operating Instruction and safety manual
125mm Air Hammer
Model No.: 27621
Round chisels Hex chisels
Residual risks
Even when the tool is used as prescribed it is not possible to eliminate all residual risk factors. The following
hazards may arise in connection with the tool’s construction and design:
1. Damage to lungs if an effective dust mask is not worn.
2. Damage to hearing if effective hearing protection is not worn.
3. Health defects resulting from vibration emission if the power tool is being used over longer period of time or not
adequately managed and properly maintained.
4. Wear eye protection.
IMPORTANT:
Upon receipt of the product,
read and follow all safety rules,
operating instructions before first use it.
And retain this manual for future reference.
2013 2014

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Air Hammer 27621
Technical Data
Shank………………………………………………………………………………….2/5”(10.2)mm
Bore diameter…………………………………………………………………………3/4”(19.0mm)
Blow per minute……………………………………………………………………………4500bpm
Avg.air consumption.………………………………………………………………2.8cfm(80 l/min)
Operating pressure……………………………………………………………………………...90psi(6.3bar)
Weight……………………………………………………………………………………………1.2kg
Air inlet size……………………………………………………………………………..………….1/4”
Air hose………………………………………………………………………………………….3/8” ID
(According to EN ISO 4871 and EN ISO 15744)
A weighted sound pressure level LPA…………………………………………. 84.0dB(A), KPA=3 dB
Sound power level LWA…………………………………………………………95.0 dB(A) , KWA=3 dB
(According to EN 28662, EN ISO 8662 and EN 12096)
Vibration in the handle………………………………………………………….…..9.5m/s2, K=1.4m/s2
Important Safety Rules
1. Always wear safety goggles , face mask or respiratory equipment.
2. Always ensure machine is switched off before connecting to air supply.
3. Disconnect any machine from the air supply before changing chisels and before servicing any type of
machine.
4. Always keep your air tool clean and lubricated. Daily lubrication is essential to avoid internal corrosion and
possible failure.
5. Do not wear watches, rings bracelets or loose clothing when using air tools.
6. Using only light weight coil hoses from a tool to the wall or compressor coupling.
7. Do not overload the machine. Allow the tool to operate at its optimum speed for maximum efficiency.
8. Do not increase the air pressure above the manufacturers recommended level, as excessive overload can
cause the machine casing to split. Also this creates excessive wear on moving parts and possible failure.
9. In the interests of safety and possible damage to the machine/operator, always ensure that the machine has
stopped before putting it down after use.
10. Always ensure that the work piece is firmly secured leaving both hands free to control the machine.
11. Always ensure that the accessories such as blades, discs, sockets, etc. are rated/designed for use with the
machine. Also correctly and securely fastened before connecting the machine to the air supply.
Operating Instruction
Warnings:
-- that power tools are not generally insulated for coming into contact with electric power sources;
-- that power tools shall not be used in explosive atmospheres unless specially designed for that purpose;
-- that unexpected tool movement or breakage of cutters may cause injuries;
-- that unsuitable postures may not allow counteracting of normal or unexpected movement of the power tool;
-- if the power tool is fixed to suspension device make sure that the fixation is secure;
-- against cutting or severing;
-- against ejection of metal cuttings;
-- of the risk of a whipping compressed air hose.
-- to observe that only lubricants recommended by the manufacturer shall be used
-- to release the start and stop device in the case of an interruption of the energy supply

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Air Hammer 27621
Description
Ergonomic grip for comfort and stability, Positive action trigger and built-in Air regulator for simple power and
speed control, Front exhaust,125mm air hammer set includes the 4 most popular chisels (round & hex), a
retainer spring and a quick coupler, aretainer spring and a quick coupler, Ideal for general cutting, chipping and
scraping.
Air supply
1. Ensure air valve (or trigger) is in the “off” position before connecting to the air supply.
2. You will require an air pressure of 90psi, and an air flow according to specification.
3. WARNING! Ensure the air supply is clean and does not exceed 90psi while operating the tool.
Too high an air pressure and unclean air will shorten the product life due to excessive wear,
and may be dangerous causing damage or personal injury.
4. Drain the air tank daily. Water in the air line will damage the tool.
5. Clean air inlet filter weekly.
6. Line pressure should be increased to compensate for unusually long air hoses (over 8 metres).
The hose diameter should be 3/8” I.D.
7. Keep hose away from heat, oil and sharp edges. Check hose for wear, and make certain that
all connections are secure.
Lubrication
An automatic in-line filter-regulator-lubricator is recommended (Fig4) as it increases tool life and keeps the tool
in sustained operation. The in-line lubricator should be regularly checked and filled with air tool oil.
Proper adjustment of the in-line lubricator is performed by placing a sheet of paper next to the exhaust ports and
holding the throttle open approximately 30 seconds. The lubricator is properly set when a light stain of oil
collects on the paper. Excessive amounts of oil should be avoided.
In the event that it becomes necessary to store the tool for an extended period of time (overnight, weekend, etc.),
it should receive a generous amount of lubrication at that time. The tool should be run for approximately 30
seconds to ensure oil has been evenly distributed throughout the tool. The tool should be stored in a clean and
dry environment.
It is most important that the tool be properly lubricated by keeping the air line lubricator filled and correctly
adjusted. Without proper lubrication the tool will not work properly and parts will wear prematurely.
Use the proper lubricant in the air line lubricator. The lubricator should be of low air flow or changing air flow
type, and should be kept filled to the correct level. Use only recommended lubricants, specially made for
pneumatic applications. Substitutes may harm the rubber compounds in the tools O-rings and other rubber
parts.

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Air Hammer 27621
IMPORTANT!!!
If a filter/regulator/lubricator is not installed on the air system, air operated tools should be lubricated at least
once a day or after 2 hours work with 2 to 6 drops of oil, depending on the work environment, directly through
the male fitting in the tool housing.
Loading and operation
WARNING: Ensure you read, understand and apply safety instructions before use.
1. Connect the tool to the air hose.
2. Press the trigger to operate the tool.
3. The flow of air may be regulated by adjusting flow valve at the base of the handle.
4. Ensure the air supply is clean and does not exceed 90psi while operating the tool. Too high an
air pressure and unclean air will shorten the product life due to excessive wear, and may be
dangerous causing damage or personal injury.
DO NOT use any additional force upon the tool.
DO NOT allow tool to free run for an extended period of time as this will shorten its life.
Maintenance
WARNING: Disconnect tool from air supply before changing accessories, servicing or performing
maintenance. Replace or repair damaged parts. Use genuine parts only. Non-authorised parts may be
dangerous
1. Lubricate the air tool daily with a few drops of air tool oil dripped into the air inlet
2. DO NOT use worn, or damaged tool.
3. Loss of power or erratic action may be due to the following:
a) Excessive drain on the air line. Moisture or restriction in the air pipe. Incorrect size or type of hose connectors.
To remedy check the air supply.
b) Grit or gum deposits in the tool may also reduce performance. If your model has an air strainer (located in the
area of the air inlet), remove the strainer and clean it.
5. When not in use, disconnect from air supply, clean tool and store in a safe, dry, childproof location.

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Air Hammer 27621
Trouble Shooting
The following form lists the common operating system with problem and solutions. Please read the form
carefully and follow it.
WARNING: If any of the following symptoms appears during your operating, stop using the tool
immediately, or serious personal injury could result. Only a qualified persons or an authorized service center can
perform repairs or replacement of tool.
Disconnect tool from air supply before attempting repair or adjustment. When replacing O-rings or Cylinder,
lubricate with air tool oil before assembly.
PROBLEMS
POSSIBLE CAUSES
REMEDIES
Tool runs at normal speed
but loses under load
■Cam clutch worn or sticking
due to lack of lubricant.
■Lubricating clutch housing.
■ Checkfor excess clutch oil. Clutch cases
need only be half full. Overfilling can cause
drag on high speed clutch parts, ie. a typical
oiled/lubricated wrench requires 12 ounce
of oil.
GREASE LUBRICATED:NOTE: Heat
usually indicates insufficient grease in
chamber. Severe operating conditions may
require more frequent lubrication.
Tool runs slowly. Air flows
slightly from exhaust
■
Power regulator in closed
position
■
Air flow blocked by dirt.
■
Check air inlet filter for blockage.
■ Pour air tool lubricating oil into air inlet as
per instructions.
■Operate tool in short bursts quickly
reversing rotation back and forth where
applicable.
■ Repeat above as needed.
Tools will not run. Air flows
freely from exhaust
■
One or more motor vanes
stuck due to material build
up.
■
Pour air tool lubricating tool into air inlet.
■Operate tool in short bursts of forward
and/or reverse rotation where applicable.
■ Disconnect supply.
Tool will not shut off
■ ‘O’ rings throttle valve
dislodged from seat inlet
valve.
■
Replace
‘O’ ring .
Note: Repairs should be carried out by a qualified person.

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Air Hammer 27621
Exploding view & Parts list
No. Description Qty. No. Description Qty.
1 Chisel 4 13 O-ring 14.5*1.8 1
2
Retain spring
1
14
Air inlet plug
1
3
Cylinder
1
15
Front handle sleeve
1
4
Piston
1
16
Valve stem
1
5
Valve cap
1
17
O-ring 14*2
2
6
Cap slice
1
18
O-ring 4*2
1
7 Cap seat 1 19 O-ring 4*1.1 1
8 Housing 1 20 Valve stem seat 1
9 Housing cover 1 21 Valve stem spring 1
10 Bolt M6*8 1 22 Trigger 1
11 Trademark label 1 23 Bolt M4*8 1
12
Pin 3*22
1