Draper 4201 A Air Impact Wrench User manual

SPECIFICATION

DECLARATION OF

CONFORMITY

1 ⁄

2

" SQUARE DRIVE IMPACT WRENCH

MODEL No.4201A.

STOCK No.52599.

Square Drive: ............................................................................

1 ⁄

2

"

Clutch Type: .............................................................Rocking Dog

Bolt Capacity:...............................................................16mm ( 5 ⁄

8

")

Ultimate Torque: ...........................................250lb-ft (31.80kg/M)

Free Speed:....................................................................7000 rpm

Operating Air Pressure: ........................................90 PSI (6.2 bar)

Average Air Pressure:......................................4.0cfm (127 L/min)

Minimum Hose Size:............................................................

3 ⁄

8

" I.D.

Air Inlet: .............................................................................

1 ⁄

4

" BSP

Weight:....................................................................2.4kg (5.3lbs)

Sound Pressure Level:.........................................................96dbA

Sound Power Level:...........................................................108dbA

Vibration Level: ...............................................................11.6m/s 2

WEAR EAR PROTECTION

We Draper Tools Ltd. Declare under our sole responsibility that the product:

Part Number:- 4201A Stock Number:- 52599

Description:- Air Impact Wrench 1 ⁄

2

"

To which this declaration relates is in conformity with the following directive(s):-

89/392/EEC, 91/388/ECC & 93/44/EEC

With reference to TC255N, EN292, EN28662-1 &

EN28662-7.

J.N. DRAPER - Managing Director

IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY TO ENSURE THE SAFE AND

EFFECTIVE USE OF THIS TOOL.

OPERATING

INSTRUCTIONS

AIR SUPPLY

Tools in the range generally operate at a maximum pressure of 90 psi a (see specifications) and this should be controlled via a combined regulator/oil/water separator such as the Draper 4222/1 or 4222/2 units which with proper maintenance will ensure a constant supply of dry air and lubricating oil at all times. See Fig. 1. below. Always check machine operating pressure before use.

Water in the compressor tank will cause serious corrosion to your air tools and should be drained daily to avoid excessive water in your air supply. Dirty wet air rapidly shorten the life of your air tool.

If you are using an air tool on a hose over 25ft. long it is advisable to increase the bore of the hose to the next larger size available ie.

1 ⁄

4

" increases 3 ⁄

8

". This will ensure adequate pressure and volume of air to power the machine.

RECOMMENDED AIR SUPPLY:

SAFETY RULES FOR

AIR TOOL PRODUCTS

1. Always wear safety goggles or glasses.

2. Always ensure machine is switched off before connecting to air supply.

3. Disconnect any machine from the air supply before changing blades or discs, 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. Do not fit quick change couplings onto the machine as vibration can cause the coupling to fail.

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 workpiece 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.

OPERATION:

Some air tools have inbuilt regulators which can be used to control speed/torque performance, on machines without inbuilt regulators this can be done by varying the pressure on your air supply regulator.

MAINTENANCE:

Every day, before use, remove the tool from the air line, use an oil can and pour the equivalent of a tablespoon of suitable oil into the machine (through the air intake).

Operate at low speed to ensure lubrication of all moving parts. If machine is in constant use or is to be used for long periods of time a combination filter/lubricator must be fitted in the system. At all times the system must be fitted with an air filter.

Recommended oils are Shell Tellus 22, Duckhams Zircon 32 or Castrol AWS32. Do not use normal engine oil or similar.

Please note: failure to comply with the above Maintenance/Operating

Instructions could invalidate the Guarantee.

TROUBLE

SHOOTING

PROBLEMS

Tool runs at normal speed but loses under load

Tool runs slowly. Air flows slightly from exhaust

Tools will not run. Air flows freely from exhaust

Tool will not shut off

POSSIBLE CAUSES

■ Motor parts worn.

■ Cam clutch worn or sticking due to lack of lubricant.

■ Motor parts jammed with dirt particles

■ Power regulator in closed position

■ Air flow blocked by dirt.

■ One or more motor vanes stuck due to material build up.

AIR TOOLS

GUARANTEE

Draper air tools have been carefully tested and inspected before shipment and are guaranteed to be free from defective materials and workmanship for 6 months from the date of purchase except where tools are hired out when the guarantee period ninety days from the date of purchase.

Should the machine develop any fault, please return the complete tool to your nearest authorized warranty repair agent or contact Draper Tools Limited,

Chandler’s Ford, Eastleigh, Hampshire, SO53 1YF. England. Telephone (023) 8049 4344.

If, upon inspection it is found that the fault occurring is due to defective materials or workmanship, repairs will be carried out free of charge. This guarantee does not apply to normal wear and tear, nor does it cover any damage caused by misuse, careless or unsafe handling, alterations, accident, or repairs attempted or made by any persons other than the authorized Draper warranty repair agent.

This guarantee applies in lieu of any other guarantee expressed or implied and variation of its terms are not authorized.

Your Draper guarantee is not effective unless you can produce upon request a dated receipt or invoice to verify your proof of purchase within the guarantee period.

Please note that this guarantee is an additional benefit and does not affect your statutory rights.

REMEDIES

■ Lubricating clutch housing.

■ Check for 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.

■ 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. If this fails return to service centre.

■ Pour air tool lubricating tool into air inlet.

■ Operate tool in short bursts of forward and/or reverse rotation where applicable.

■ Tap motor housing gently with plastic mallet.

■ Disconnect supply. Free motor by rotating drive shank manually where applicable

■ If tool remains jammed return to service centre.

■ Replace ‘O’ ring or return to service centre.

■ ‘O’ rings throttle valve dislodged from seat inlet valve.

Note: Repairs should be carried out by a qualified person.

Helpline: (023) 8049 4344. Sales Desk: (023) 8049 4333. General Enquiries: (023) 8026 6355.

01/2001