Graftech Air Operation
Initial usage of tools
We recommend that air powered tools should initially be set up with the blades detached from the "Knife Carrier" so operators may familiarise themselves by viewing the Graftech movements speed of action. Once this has been completed replace blades and use, the Graftech Topgrafter to perform cuts without wood. Following this they should commence using the tool with trial wood until operators gain an understanding of the tools functions.
Speed of cuts can also be controlled by slightly depressing the foot pedal (accelerator) permitting blades to manoeuvre at a slower rate. This method will allow the operator to become accustomed to using the Graftech Topgrafter and control the function accordingly.
By means of this adjustment, it can perform either an instantaneous cut or a gradual cut dependant on operator's selection. Operation of the air controlled foot pedal can be likened to using the accelerator whilst driving a car.
When using the Graftech Topgrafter with the pneumatic ram the cutting action may be controlled to suit the operators. The Graftech Topgrafter can perform either an instantaneous cut or a gradual cut dependant on operators' selection. By slightly depressing the foot pedal (accelerator) the blades will move at a slower rate, this will come, as the operator becomes familiar with using the tool. Use of the foot pedal can be compared to using the accelerator whilst driving a car.
For best cuts, we recommend that the speed be at maximum to make the cuts as clean as possible and reduce dragging of "cut tissue" in softer stock.
It is difficult to advise compressor sizes due to variances in how compressors are operated, distance of tools from the compressor and how many units are to be used. Below is recommended PSI ratings required to operate the air tools effectively.
Optimum running capacity is 100 PSI
Maximum running capacity is 150 PSI
Minimum running capacity is 60 PSI
Initially a compressor, which runs at 5-10 Cubic feet per minute/2-3 Horse Power, will operate a single Graftech effectively but leaves little room for future expansion. The smaller the compressor unit the slower the recovery rate affected from each cut.
Installation instructions for Graftech air operation
- Align Graftech base on workbench in desired position the shaft of the Grafter should be pointing towards you.
- Mark centre of two 10mm holes at rear of base unit and drill two 10mm holes through bench
- Mark centre of linkage travel and cut out hole for linkage travel.
- Align Graftech base plate again and secure through bench to bottom mount frame H section.
- Fit ram mount frame to the H section placing pins and cotter pin to hold ram in place. Secure front of ram holder to the bench using a wood screw.
- Fit and connect blade carrier to main truncheon, adjust for desire travel.
- Mount air isolate tap in desired position.
Important Note: This tap must be readily accessible to operators at all times. Operators must turn off air to the Graftech tool before leaving their work area.
- Connect air hoses from foot pedal to air ram.
- Connect main air from air compressor to air tap.
- Turn on air tap and test operation. Ensure that when the foot pedal is depressed the Knife carrier moves downward. If this moves in a reverse fashion the 2 air hoses attached to the air ram must be removed and inverted.
- We suggest that you spend a few minutes to familiarise yourself with the operation of this unit with out blade fitted.
- Position and affix hazard label prominent position.
- Turn off air and operate foot lever to relieve any air pressure.
- Disconnect blade carrier from top linkage and remove.
- Fit blades and reposition knife carrier to stem.
- Slide knife carrier down slowly and make sure that blade pass freely past anvils - adjust if necessary.
- Disconnect 6mm air hose from air tap and oil foot pedals daily by dripping a three of drops of light machine oil into this hose. Important Note: do not use CRC or WD40.
- Reconnect blade carrier to linkages and begin grafting.
Safety checks for Graftech air operation
Ensure that the compressed air supplied to the tool is clean and dry. Dust, moisture, and corrosive fumes can damage a tool. An in-line regulator filter and lubricator increases tool life.
Use the proper hose and fittings of the correct diameter making sure that hose connections fit properly. Care must be taken to always use hose built for the pressure they will be subjected to.
Blow out the airline before connecting a tool. Hold hose firmly and blow away from yourself and others.
Use hoses specifically designed to resist abrasion, cutting, crushing and failure from continuous flexing.
Always inspect all air hoses for cracks regularly for cuts and abrasions, worn threads, damaged or loose quick disconnect couplings in order to prevent injury resulting from a whipping air hose. Replace necessary parts, if defective.
Install quick disconnects of a pressure-release type rather than a disengagement type.
In the case of a hose fracture shut-off, the air pressure at the closest safety.
Look out for excess air hose around the work area to prevent tripping and falling.
Turn off the air pressure to tools when not in use.
Keep all tools in good condition with regular maintenance. The supervisor is responsible for the safe condition of tools and equipment used by his workers, but the workers have the responsibility of using and maintaining tools properly.
Ensure cutting blade and anvil are clean, free of nicks, correctly sharpened, free of accumulated debris and resin; nuts and bolts are properly tensioned and lubricated; locking mechanism functions and is in good order
The greatest hazards posed by hand tools result from misuse and improper maintenance.
Ensure that floors be kept as clean and dry as possible to prevent accidental slips with or around tools.
Before disconnecting the air hose from the airline, make sure that the air pressure is off and any air pressure inside the line has been released.
When using the pneumatic grafting tools, there is a hazard from flying chips. It is recommended operators wear safety goggles.
Do not lean over to pick materials off floor with tool still has air functioning. This results in loosing sight of cutting action. If tool has an accidental actuation, this may cause damage to the operator.
Tools must be inspected to ensure they are working properly prior to operation. All components must be checked to make sure they are tight and there are no missing or damaged parts.
NEVER adjust, remove or repair without disconnecting the air supply first.
NEVER leave an idle tool connected to the air supply to prevent accidental actuation. The air supply must be turned off at the nearest source or at the air supply.
Ensure the pressure from the air tap has been completely relieved through the line to the tool's pedal before changing to disconnecting or leaving the tool.
DO NOT touch moving parts or other accessories while the tool is operating.
Raggett Industries Ltd. suggests the use of air regulators to ensure a recommended air pressure of 100 psi.
Ensure proper seating and balance when operating the air tool.