CM220 Chipper 5. OPERATION 5-3
©GreenMechLtd 5-3 08/17
5.4 Blockages
Stop engine and REMOVE key to secure place.
CAUTION! Chipped material is inflammable. Expect large volume and prevent from falling
into engine compartment. All material must be removed.
Open chipper chamber. See 5.1 Pre-work checks.
Look into chamber to identify problem if possible, before reaching in.
CAUTION! Beware sharp edges of blades and unexpected movement of flywheel due to
resistance of engine. Wear protective gloves.
Inspect and clean out discharge chute thoroughly with a suitable rod to pass around bends as
necessary.
Check if chipper flywheel is free to rotate. Pull top of flywheel in operating direction of rotation. If
so proceed to 6 below.
If flywheel does NOT rotate freely, proceed as follows:
1 Carefully remove excess loose material from around chipper flywheel and note any obstructions.
2 Carefully rotate chipper flywheel in reverse direction by full revolution to release blocked
material. Use bar against paddle blades for aid.
3 Carefully remove all material, checking for obstructions.
Check rotation of chipper Flywheel.
Check condition of blades. See 5.1.6
Note: Always attempt to find reason for blockage. e.g. blunt blades, slack drive belts.
4 Re-assemble all covers with correct fasteners and check for security.
5 Start machine as 5.2 and check operation.
Note: If machine will not run, repeat process or contact dealer for technical advice.
5.5 Operating Hints
Engage clutch slowly (fig 5.2.2)
Check that chipper flywheel is at full speed, rpm readout should be above 2300 rpm.
NOTE: “No Stress” system will only allow FEED IN (Forwards) and FEED OUT operation of feed
rollers when machine is running at FULL operating speed and not overloaded.
Reduce chipper speed to IDLE (yellow button) whilst further material is collected for chipping.
Take care when feeding wood into machine to allow for awkward shapes to “KICK” when
contacting feed rollers.
Position end of larger sections of wood inside infeed chute and then support other end whilst
pushing wood into feed rollers.
NOTE: If chipper becomes blocked do not continue to feed. It will make removal of blockage more
difficult. See 5.4.
CAUTION! Do not release discharge chute clamps when chipping is in progress.
Elevation of discharge is altered by means of adjustable flap (fig. 4.4).
CAUTION! Keep working area around machine clear at all times and check only
authorised personnel are present.
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