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Before operating a chipper, all personnel coming into contact with this type of equipment should be trained on the functionality and use of the machine. This includes the equipment operators and equipment support staff.

Chipper Checklist


Operator training


Before operating a chipper, all personnel coming into contact with this type of equipment should be trained on the functionality and use of the machine. This includes the equipment operators and equipment support staff. The first steps before operation should be to review the safety video included with the machine, and review of the equipment owner’s manual. Continuing education is vital to the reinforcement of proper equipment operation and safety practices. Complacency is the worst enemy of any chipping operation. Personnel should be trained on the following:

Proper safety gear
Lock-out/tag-out  (LOTO) procedures for equipment maintenance
Inspection processes before getting started:

A. Hitching to a tow vehicle
B. Machine inspection:

All safety equipment is functioning properly
All safety decals are properly displayed and not worn or damaged
Proper clutch adjustment
Proper belt tensioning
Proper lubrication schedule

C. Chipper inspection

Knives, anvil and hardware
Demonstrate proper drum lock operation and use
Proper installation of chipper hood pin

D. Proper control bar and safety pull cable operation

Control bar detent shifts freely between forward, neutral and reverse positions
Pull safety pull cables from forward position to ensure proper operation

E. Discharge chute positioning
F. Instruction on proper material staging for safe and efficient chipper operation
G. Proper equipment operation

Starting the engine
Proper clutch engagement practices
Control bar and safety pull cable operation
Feed wheel operation

a. Shift control bar forward and backwards to ensure proper operation of feed wheels


b. Raise and lower yoke cylinders to ensure proper operation


c. Demonstrate how to install and remove the yoke lock pin


5. Where to stand and how to properly feed material into the chipper


 


Safety precautions before start-up

It is extremely important to follow proper lock-out/tag-out (LOTO) procedures before performing any maintenance or inspection procedure.
Each day, personnel should:

A. Inspect the towing hardware for wear, including:

Telescoping tongue hardware
 Pintle/ball towing hitch
Tires, axles and fenders

B. Inspect the disc or drum hardware including the chipper knives, anvil and attaching hardware
C. Inspect the control bar and safety pull cables to ensure proper operation
D. Install wheel chocks on the tow vehicle and chipper
E. Make sure proper emergency equipment is available and on site:

First aid kit – verify stock levels
Approved fire extinguisher – verify charge and operation
Communication device – verify charge and operation

 


Maintenance checklists

Daily checklist:

A. Towing hardware
B. Trailer hardware
C. Chipper disc or drum
D. Belt tensioning
E. Clutch adjustment
F. Daily lubrication
G. Inspect for loose parts, cracks and worn hardware
H. Safety and operator’s manuals are with machine
I. Emergency equipment is available

First aid kit – verify stock levels
Approved fire extinguisher – verify charge and operation
Communication device – verify charge and operation

2. Weekly checklist:

A. Knife torque
B. Sharpening knives
C. Checking anvil adjustment and wear
D. Checking correct fluid levels
E. Air filters
F. Chipper drive belts
G. Feed wheel chain drive
H. Hydraulic and engine oil for breakdown

 

3. Biannual check list:

A. Chipper drum or disc bearings
B. Complete machine inspection

 


Transporting and towing

Before a machine is transported, the following areas should be inspected:

A. Inspect the towing equipment and components for wear and proper operation including:

Telescoping tongue hardware
Pintle/ball towing hitch
Tires, axles and fenders
Proper operation of the equipment brakes, break-away actuator and truck brake controller
Proper operation of the stop, turn, tail and side marker lamps

2. Worn or damaged components should be repaired or replaced before the equipment leaves the yard


 


Roadside safety and set-up

Roadside set-up should include safety cone perimeters, warning signs for upcoming tree work and usage of reflective vests by equipment operators.
Additional safety measures can be taken by the use of amber strobe lights, warning of upcoming cautions, or roadside flag crews.
Curbside feed options on chippers allow the operator to feed material from the curbside – eliminating the need to enter the roadway to operate the equipment.

 


Safety advancements

Automatic Feed Systems have been greatly improved, with the integration of electronics from the engine manufacturers. Automatic feed systems, most of which include an automatic reversing feature, have preset RPM levels, monitored by a controller that stop, reverse and resume the feed. This takes most of the manual labor away from the operator once the material is introduced into the feed system.
Mechanical devices that, when pulled, pull the control bar to the neutral or reverse position.
Hydraulic feed systems which slow the material feed speed down to a comfortable operating level, allowing an additional level of safety by reducing kickback from the drum and material being pulled from the operator’s hands. This advancement allowed larger feed capacities and reduced the chances of the drum being overfed with material.
Hydraulic winch options that allow the operator to reduce manual labor, increase safety and reduce operator fatigue.
Single or dual engine stop options mounted on the infeed act to shut down the engine in the event it becomes necessary.

 


 


Information provided by Morbark, Inc.


 

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