Sealey SM150D - Manual (Page 3)

4. OPERATING INSTRUCTIONS
 WARNING! Before cutting ensure that you wear approved safety goggles, ear defenders, appropriate dust mask if cutting
generates dust, and safety gloves. All safety instructions in Section 1 must be followed.
4.1. USING THE LOCK UP/DOWN BOLT. (Refer to Fig.1)
4.1.1. When not in use or when being transported the cutting arm should always be locked down. To lock the arm down, pull it to its lowest
position against the return spring pressure until it is solidly against the stop. Push the bolt in and turn through 90° to secure.
4.2. SECURING THE WORKPIECE.
4.2.1. Ensure that the saw is unplugged from the power supply.
4.2.2. Check that the back stop is at 90 ° to the cutting disc using a set square.
Ensure the back stop fixings are tight using the hex key provided.
4.2.3. To move the other jaw up to the workpiece quickly, flip the thread lock open as shown in fig.2 and slide the jaw face up to the workpiece.
Flip the thread lock back down and tighten the workpiece in the vice.
4.2.4. When cutting long workpieces use additional supports along the length.
4.3 MITRE CUTTING
4.3.1. To cut at an angle loosen the vice backstop screws (see fig.3), by turning them anticlockwise. Align to the desired angle using the
graduated scale on the base plate shown in fig.3, and retighten the vice backstop adjustment screws. Place the workpiece against the
backstop and move the other jaw up to it, and securely tighten.
4.4. ON/OFF SWITCH
(Refer to fig.1)
4.4.1. The On/Off switch is locked in the Off position. To turn on the saw you must press in the safety button with your thumb before pulling the switch
upwards. The switch is spring loaded and must be held in the up position in order for the saw to continue running. As soon as the pressure on
the switch is released the saw will turn off.
SM150D Issue: 3(SP) 10/12/13
Fig.2 Fig.3
4.5. OPERATION

WARNING! DO NOT switch on the cut-off machine whilst the cutting disc is in contact with the workpiece. Bring the rotating
disc to the workpiece.
4.5.1. The cutting disc must be running at maximum speed before attempting to lower the cutting edge onto the workpiece.
4.5.2. Lower the cutting disc slowly and smoothly down towards the workpiece (avoid jerky movements).
4.5.3. Avoid subjecting the disc to excessive strain. Always ease the disc down against the workpiece (a harsh downward impact may
cause disc failure) and do not apply undue force on the handle when cutting the workpiece. Maintain a controlled cutting speed.
4.5.4. When cutting is complete, fully raise the cutting disc and release the On/Off switch.
4.5.5. Wait until the disc has stopped rotating before attempting to remove the workpiece.
Original Language Version © Jack Sealey Limited
5. CHANGING CUTTING DISC
 DANGER! The use of damaged discs is dangerous and may cause injury.
 WARNING! Ensure that the cut-off machine is unplugged from the power supply before attempting to change the cutting disc.
5.1 IMPORTANT! Cutting discs used with this machine shall be of an adequate speed rating and suitable for the task in hand.
Order from your dealer quoting model no: SM150D
5.1.1. Before using a cutting disc ensure that there are no fissures or cracks in it. Once mounted on the cut-off machine, test the disc before
use by facing the cut-off machine in a safe direction (turned away from yourself, others and vulnerable items) and run it for a short time.
5.2. REMOVING AND INSTALLING CUTTING DISCS (Refer to figs. 4,5 and 6).
NOTE: Removing and installing discs is to be undertaken by competant persons.
5.2.1. Lift the arm into the up position.
5.2.2. Remove three screws (fig.4/1) which hold the active disc guard in position. Note the orientation and relative positions of the spacer washer and
mounting plate. Pull the active disc guard forward and then lay it behind the machine (fig.5/4). Remove the static disc guard screw (fig.4/2).
Remove the active disc guard control rod screws fig.4/3) to allow the active disc guard to be removed completely.
5.2.3. Use the 12mm open ended spanner (fig.5/5) placed through the aperture (fig.5/6) in the casing of the machine to engage with the flats on the
drive spindle.
5.2.4. Spin the static disc guard to its vertical position (fig.6/7). Use the clamping washer removal spanner (fig.6/8) to undo the washer and remove the
cutting disc, whilst holding the drive spindle stationary.