Hansa C27 User guide

MANUFACTURER: HANSA NEW ZEALAND
[phone] [email protected]
www.hansaproducts.com
REST OF WORLD:
Please refer to www.hansaproducts.com for
a current list of our authorised dealers and
contact details relevant to your territory
Operation, maintenance and safety manual
Original Instructions
All operators must fully read and understand
this operator’s manual before using the chipper.
Keep this manual for future reference.

Hansa C27EU O&M Manual –OM-023 Revision A 21/08/2018
© Hansa Chippers 2018
TABLE OF CONTENTS
WHAT CAN MY HANSA CHIPPER PROCESS?..................................................................................................................................1
INTENDED USES OF THE CHIPPER ...............................................................................................................................................................1
RECEIVING YOUR HANSA BRUSH CHIPPER....................................................................................................................................1
CHIPPER COMPONENTS........................................................................................................................................................................... 1
ENGINE COMPONENTS ............................................................................................................................................................................2
SAFETY .........................................................................................................................................................................................3
OPERATOR COMPETENCY.........................................................................................................................................................................3
IDENTIFYING HAZARDS AND RISKS ..............................................................................................................................................................3
TOWING SAFETY ....................................................................................................................................................................................4
OPERATION..................................................................................................................................................................................4
OUTLET CHUTE ADJUSTMENT....................................................................................................................................................................4
360-DEGREE TURNTABLE ADJUSTMENT ......................................................................................................................................................4
FEED ROLLER CONTROL ...........................................................................................................................................................................5
AUTOMATIC FEED CONTROLLER (AFC) ......................................................................................................................................................5
HOUR METER /TACHOMETER...................................................................................................................................................................5
EMERGENCY STOP..................................................................................................................................................................................6
CHECKLIST BEFORE OPERATION .................................................................................................................................................................6
SAFE SETUP PROCEDURES ........................................................................................................................................................................6
SAFE OPERATING PROCEDURES .................................................................................................................................................................7
STARTING PROCEDURE ............................................................................................................................................................................8
SHUTDOWN PROCEDURE .........................................................................................................................................................................9
TROUBLESHOOTING................................................................................................................................................................... 10
WHAT TO DO IF:.................................................................................................................................................................................. 10
MAINTENANCE & SERVICE ......................................................................................................................................................... 11
KNIFE RE-SHARPENING AND KNIFE REPLACEMENT .......................................................................................................................................11
ANVIL ADJUSTMENT ............................................................................................................................................................................. 14
BELT TENSION .....................................................................................................................................................................................14
BELT REPLACEMENT..............................................................................................................................................................................15
GREASING BEARINGS &PIVOT POINTS......................................................................................................................................................16
HYDRAULIC SYSTEM.............................................................................................................................................................................. 17
ENGINE SERVICING ...............................................................................................................................................................................17
OTHER SERVICING ................................................................................................................................................................................17
ROTOR BEARING REPLACEMENT ..............................................................................................................................................................17
TYRE PRESSURE ...................................................................................................................................................................................18
MAINTENANCE &SERVICE INTERVALS ......................................................................................................................................................18
BOLT TORQUE .....................................................................................................................................................................................19
SPECIFICATIONS ......................................................................................................................................................................... 19
HANSA GLOBAL INDUSTRIAL LIMITED WARRANTY..................................................................................................................... 20
LABELS ....................................................................................................................................................................................... 22
SOUND OUTPUT INFORMATION ................................................................................................................................................ 25
EC DECLARATION OF CONFORMITY............................................................................................................................................ 26

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
1
What can my Hansa chipper process?
Intended uses of the chipper
The C27 Hansa chipper is built to process organic material including wooden branches not exceeding 160 mm in diameter. It is
designed to be used on by commercial arborists, tree contractors and hire / rental companies. Do NOT use the chipper for any
other purpose.
Organic wastes include:
Prunings, stalks, roots, vegetable matter, hay, grass, bark
Branches
Palm fronds
Dead and hard timbers (Note: these will dull the knives faster)
Paper or cardboard
Do NOT process:
Flax, root balls
Soil, bones, sand, grit, stones, metal
If you have any questions, contact your authorised dealer.
Do NOT exceed 160 mm branch diameter
Receiving your Hansa Brush Chipper
Congratulations on the purchase of a Hansa Model C27 Brush Chipper.
Chipper components

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
2
Engine components

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
3
Safety
Preventing accidents is the responsibility of every equipment operator. The operator is responsible for any accidents or hazards
occurring to people or their property. Ensure every operator is familiar with the safe operation procedures and controls of the
machine, how to identify hazards, and the steps required to avoid injury while handling and operating the chipper. Relevant
information is contained in this manual.
Do NOT modify the design of the chipper.
Operator competency
Ensure that every person operating the chipper understands and follows the safe operating and maintenance procedures
as detailed in this manual.
Do NOT allow persons below the age of 18 to operate the chipper. Additionally, local regulations may restrict the age of
the operator.
Do NOT allow persons with reduced physical, sensory or mental capabilities, or lack of experience and knowledge to
operate the machine.
Identifying hazards and risks
Identify hazards and risks, and take preventative steps to avoid accidents and minimise risk. Possible hazards include, but are not
limited to, moving parts, thrown objects, weight of chipper and components, and the operating environment.
Below is a list of hazards and actions required to prevent injury.
Hazard
Risk
Corrective action
Dust
Injury or irritation of the
eyes
Respiratory irritation
Wear safety glasses
Process freshly cut materials and / or wear a dust mask
Exhaust Fumes
Respiratory irritation
Place the chipper in a manner that the operator or onlookers
are not exposed to direct exhaust fumes
Hot Exhaust
Heat burns
Keep bare hands and other body parts a safe distance away
from hot exhaust
Fire
Heat burns
Clear any build-up of chipping debris around the engine and
exhaust regularly
Belt Drive
Skin pinching and/or
abrasions
Ensure that the belt guard is in place, and keep away from
the belt
Cutting rotor and knives
Pinching, crushing, cutting,
severing
Keep hands and other body parts out of the inlet chute
When using a stick to push materials into the inlet
chute feed roller
Do NOT push material into the feed roller with your
hands
Swing arm
Crushing, severing
Do not touch or approach the feed roller motor and swing
arm while the machine is operating
Feeding wheel and
feeding material
Being pulled into chipper
resulting in possible
crushing, cutting, severing
Do not stand directly in front of the inlet table while feeding
material into the chipper; stand to either side.
Do not climb onto the inlet table or enter the infeed chute
unless the machine is off, and the cutting rotor is stationary
Sound
Damage to hearing
Always wear ear muffs when operating the machinery
Discharge material
Eye injury, minor cuts
Always wear safety glasses when operating the machinery
Do NOT stand in front of the outlet chute
Do NOT face the machinery in a place where the
outlet chute is directed on a hard surface

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
4
Feeding material
Cuts and scrapes
Wear tight fitting safety gloves
Wear tight fitting long sleeves and pants to cover bare skin
when operating the machinery
Weight of the chipper
Straining, crushing
Place the machinery on level ground
Do NOT attempt to move the machinery up/down
slopes unless is attached to a towing vehicle
Petrol, oil, grease
Poisoning, skin irritation,
harmful vapours
Take care when handling petrol, oil and grease
Wash skin if contaminated with petrol, oil or grease
Do NOT refuel the chipper in enclosed areas
Towing safety
Rotate the discharge chute to face the opposite direction of the towing vehicle before towing and lock into position.
Lock the feed table in the up position.
Do not exceed maximum towing speed of 90km/hr.
Connect the tow coupling to the towing vehicle (check the ball dimensions are the same as the coupling).
Connect safety chain with shackle.
If the machine is fitted with brakes, check handbrake is off and road brakes are on by removing the reversing lever.
Plug in lights and check they are operational.
Check wheel nuts and axle U-bolts periodically to make sure they are secure.
Ensure the jockey wheel is in the up position and locked away during transport.
Ensure the rotating assembly is positioned facing forwards (with the engine at the front, feed chute at the rear) and the
chassis rotation locking pins are down in the locked position.
Operation
The chipper is self-feeding and has a large inlet opening. It can process:
•Prunings, stalks, vines, leaves, roots and vegetable matter, paper and cardboard
•Freshly cut material is better to process than dry material
•Maximum capacity is 160 mm diameter branches
It is recommended to keep a wooden stick handy, approx. 60 mm diameter x 1000 mm long for:
•Pushing in short, brushy and very leafy materials
•Keeping the inlet table clear
Outlet chute adjustment
The C27 is fitted with a freely rotating outlet chute, allowing the operator to precisely
control the direction of material discharge from the machine. The chute can easily be
adjusted by undoing the clamping bolt, adjusting the outlet chute direction as needed, then
doing the clamping bolt back up.
Additionally, the end of the outlet chute is fitted with two deflector plates that you can
adjust to control the angle and distance that material is discharged. A wingnut is located on
the side of the upper deflector to lock it in place.
360-degree turntable adjustment
The chipping components of the C27 are coupled to the chassis via
a freely rotating turntable. This allows the operator to feed material
into the chipper from any direction, eliminating the time and effort
spent repositioning the machine, and allowing you to use the
chipper while still being coupled to the tow vehicle. To reposition
the turntable, lift the locking pins on each side of the chipper, rotate
the chipper, then resecure the pins. Check the table is locked
properly by ensuring each pin locks into one of the 24 positions on
the base of the turntable.
Locking pin
in the ‘locked’
position

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
5
Note: the body of the chipper is rather heavy and it may take significant force to rotate.
Feed roller control
The C27 is equipped with a feed roller which draws material into the machine. The feed roller is controlled via both the yellow
control bar which surrounds the inlet table and the capacitive touch button on the side of the inlet table. Pushing the control bar
in (towards the body of the chipper) stops the feed roller. Pulling it out (away from the body of the chipper) enables the feed roller.
When the control bar is in the ‘enabled’ position, touching the capacitive touch button will start the feed roller. When pressed
again, it will toggle between forward rotation and reverse rotation of the feed roller.
Automatic Feed Controller (AFC)
The feed roller is fitted with an electronic automatic feed control system which is designed to limit the feed rate of material into
the machine in order to prevent the engine from stalling.
This system eliminates the need to control the speed at which the branches are fed into the chipper manually. A sensor detects the
RPM of the rotor; once this speed drops to a pre-set level the feed roller stops and the branch stops feeding into the machine. The
engine then picks up in RPM and once it reaches a pre-set speed the feed-roller will start feeding again. The feed wheel will also
reverse back slightly after stopping (reducing the friction between the wood and knives), resulting in a quicker engine recovery.
The feed roller will only work once the engine is turned on and the engine has reached full throttle after engaging the rotor. If the
green LED light on the AFC controller is flashing this indicates the feed roller isn’t turning. When this changes to a solid green light
(when the engine reaches maximum throttle of 3000RPM) the feed roller will be operational.
The AFC has 19 different pre-set positions at which the feed will stop.
Adjusting the AutoTrip setting:
1. Turn the ignition key into the ‘ON’ position. Alternatively, this can be adjusted when the machine is in operation.
2. The version number will initially be displayed on the LCD display, wait until this clears.
3. Push the ‘Menu’ button once.
4. Adjust the AutoTrip setting down using the ‘Menu’ button or up using the ‘Set’ button. There are 19 different positions at
which the feed will stop. At setting 1 the engine is dropping further in RPM, whereas at setting 19 the engine is only
dropping marginally in RPM before the feed roller stops. Adjust to a setting which is most suitable to you. Once adjusted
the screen will return to the Hour meter / Tachometer display after 5 seconds, saving the desired setting.
If there are any problems with the electronic automatic feed system, the chipper can be used with the auto-feed disabled. To
disable auto-feed, adjust the AutoTrip setting down to 0 or up to 20.
WARNING! Be careful using the machine with auto-feed disabled as the machine can be stalled easily.
Hour meter / tachometer
The LCD display will toggle between the current engine RPM and machine hours every 5 seconds. Alternatively, the operator can
toggle between the two by pushing the ‘Set’ button.
Feed control bar
Stop feed
roller
Feed
direction
button
Enable feed
roller

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
6
Emergency stop
The emergency stop acts as an immediate kill switch to the engine. It does not stop the rotor from spinning. The rotor will continue
to spin for some time due to its rotational inertia. To engage the emergency stop, push the red button. To disengage the emergency
stop, twist the red button clockwise until it releases outwards.
Use it when foreign matter such as sand, stones or metal enter the inlet chute
Use it in response to an immediate hazard/danger to an operator or onlooker
Follow the regular shutdown procedure in addition to using the emergency stop
Inspect the machine before resetting the emergency stop
Under normal conditions, Do NOT use the emergency stop in place of the regular shutdown procedure
Checklist before operation
Engine:
✓Check oil level in engine
✓Check condition of air cleaner
✓Refer to engine manual for more details
Check Hydraulics:
✓Check level of hydraulic fluid
✓Check all hydraulic components for leaks
General:
✓Check drive belt and pump belt for proper tension
✓Check machine for proper lubrication
✓Check nuts and bolts to ensure they are tight
✓Check tires for proper air pressure as stated on the tire
✓Check petrol level
✓Check direction of the discharge chute
✓Check safety curtain in the inlet chute is in place and in good condition.
✓Check guards are all in place and in good condition.
✓Check all labels are legible. Replace if necessary (contact Hansa for replacements)
✓Refer to maintenance section for more details
Safe setup procedures
Ensure all pre-operation checks have been done
Setup the work site so there is no danger to traffic or public and provide adequate warnings.
Ensure the chipper is positioned on level ground.
Ensure the feed roller control bar is not jammed, disabled, or otherwise impeded such that the effectiveness of the stop
control is compromised
Ensure that the outlet chute is discharged onto soft ground (e.g. grass)
Do NOT allow the outlet chute to discharge chip onto hard surfaces (such as a paved or gravel surface)
Ejected material can rebound and cause injury
Keep children and spectators clear of the work area at all times
Do NOT operate the chipper where there is a hazard to onlookers
Do NOT allow any person under the age of 18 to operate the chipper
Refuelling:
Take extra care in handling fuels
They are flammable and vapors are explosive
Use only an approved fuel container
Always replace and securely tighten fuel cap after refuelling
Allow engine to cool down before refuelling
If you need to drain the fuel, ensure this is done outside
Do NOT smoke when using or refuelling the chipper
Never remove fuel cap or add fuel with the engine running
Never refuel the chipper indoors
Never store the chipper or fuel container inside where there is an open flame, such as a water heater
If fuel is spilled, do not attempt to start the engine. Wipe up the spilled fuel and move the chipper away from the
area of spillage before starting

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
7
Safe operating procedures
Wear safety equipment: Safety glasses and earmuffs must be
worn at all times
Wear work gloves: The wearing of work gloves is optional but
highly recommended - ensure that the gloves fit tightly
Do NOT wear loose fitting gloves or gloves with long cuffs
Loose gloves may get snagged by branches, which could result in the operator being pulled into the chipper
Tie long hair up
Long hair could be snagged by a branch and may be pulled into chipper
Wear clothes that sit tightly
Avoid scarves and any items that can get caught in the chipper or snagged on branches
Place the chipper on even ground and direct outlet chute onto soft ground
Ensure exhaust is pointing away from the working area and downwind from the operator and onlookers
Keep proper balance and footing at all times and stand at the same level as the chipper
Do NOT climb onto the inlet table to push material into the feed roller
Keep your face and body away from the inlet chute. Stand to the side of the inlet table while feeding material into the
chipper
Standing to the side gives better access to the control bar and helps in keeping clear from flying debris
Feed only freshly cut material into the chipper
Do NOT feed in materials covered in gravel, stones and dirt as this can rebound, injure the operator and damage
the machinery
Prune to a size that suits the chipper’s capabilities
Pre-cut side branches
The branch will ‘self-feed’ more efficiently
Keep the engine clean of debris and other accumulations
This prevents damage to the engine or possible fire
Feed limbs and branches through butt end first, leaving the bushy head on
This helps guide the limb down the inlet chute
It reduces spinning and the occurrence of ejection of small pieces back up the inlet chute
Feed soft materials intermittently with branches
The wood chips tend to clean out any soft residue left in the chipper
The chipper can clog up with soft, wet or fibrous materials
Keep well clear of the outlet chute discharge area, even when the chipper is not currently processing material
High velocity, sharp discharge can cause serious injury
Keep the outlet free of blockage
If blockage occurs, turn the engine off and wait for rotor to stop spinning. Open the outlet chute and remove
material until the outlet chute is clear
Keep the feed roller free of blockage
If blockage occurs, turn the engine off and wait for rotor to stop spinning. Remove the feed roller guard by
unhooking the four rubber latches. Unhook the springs from the base of the chassis. Lift the swing arm up and
insert the rotor pin (located underneath the control panel) into the tab on the housing to lock the swing arm in
place (as per the diagram below). You may now safely clear the blockage. Remove the rotor pin, lower the feed
roller, reposition the springs, then replace the guard
Turn off the engine whenever you leave the work area
DO:
Rotor pin
Feed roller motor
Swing arm

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
8
Run the chipper in an enclosed area
Exhaust fumes contain carbon monoxide which is poisonous, colourless, odourless, and tasteless
Operate the chipper wearing loose clothing and untied long hair
Stand at a higher level than the base of the chipper when feeding material into it
Feed flax and cabbage tree leaves into the machine
These stringy materials can wrap around the rotor shaft and work their way into the bearing.
If any stringy material becomes wrapped around the rotor shaft, remove it before it works itself into the bearing.
Process old materials such as dried wooden branches
They get very hard and springy when dried out
They are more awkward to handle
The knives dull much quicker
Feed short, stubby pieces of wood into the chipper
They bounce and spin in the inlet chute
Feed short stubby pieces together with longer pieces
Feed branches that are too large (max 160 mm branch diameter)
The chipper engine will stall, which could result in damage to the engine or drive belts
Put soil, sand, grit, stones or pieces of metal into the chipper
This will damage the sharp edge of the cutting knives and can rebound and injure the operator
Put root balls and dead wood into the chipper
This dulls the knives quickly
Overload the chipper
If the cutting rotor is slowing down, feed the material in slower
Transport the chipper while the engine is running
Tamper with the engine governor settings on the chipper
The governor controls the maximum safe operating speed and protects the engine and all moving parts from
damage caused by overspeed
Operate the chipper with blunt knives
This causes excessive vibration which may result in damage to the chipper
Remove any guards on the chipper unless the engine is turned off and the cutting rotor has come to a complete standstill
Put hands or any other part of the body or clothing:
Inside the feed chute past the rubber flap
Inside or near the opening of the discharge chute
Near any moving part
Use the feed control bar as a handle to manoeuvre the machine
Starting procedure
Before proceeding, ensure the ‘safe setup procedure’ has been followed on page 6 of this manual.
DO NOT:
Ensure the rotor is disengaged by winding the
engagement handle in the counter clock-wise direction
until the handle comes to a stop (located next to the
control panel).
1

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
9
Shutdown procedure
Move the engine throttle control to approximately half
throttle.
Insert the key and turn it to the start position and hold
until the engine has started. Allow the engine to warm up
for 1-2 minutes before engaging the rotor.
WARNING: Never run the starter motor for more
than 10 seconds at a time. Allow to cool for 1 minute
before attempting another start.
Gradually and slowly engage the rotor by winding the
engagement handle in the clock-wise direction until it
comes to a stop. This should be done slowly over a period
of 20 seconds to allow enough time for the cutting rotor
to pick up speed without stalling the engine.
Increase throttle to full for chipping (move the throttle lever to the left-most position).
Note: Engine must run at full throttle for the automatic feed and feed roller to operate. Refer to the ‘Automatic
Feed Control’section on page 5 to set the automatic feed control to the desired setting.
To shut the machine down, move the throttle control
lever to the idle position (far-right position).
2
3
5
6
1

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
10
Troubleshooting
What to do if:
The chipper won’t start
•The engine oil level might be too low
The chipper is fitted with oil alert and will not start if the oil level is too low
Check the oil level and top up if required
•The chipper is placed on a slope
The chipper is fitted with oil alert and will not start if the oil is not level
Move the chipper to level ground
Belt drive engagement will not work
•The housing might be blocked
Turn engine off, disconnect the spark plug wire, ensure rotor has completely stopped, remove debris,
restart engine, then attempt to re-engage the belt drive
Drive belts squealing/smoking
•Drive belts are loose/damaged
Turn the engine off, disconnect the spark plug wire, ensure rotor has completely stopped. Follow the
belt tensioning procedure on page 15
Discharge slows down
•The chipper is clogged up
Turn the engine off, disconnect the spark plug wire, ensure rotor has completely stopped, remove debris,
then close and lock the outlet chute
Outlet chute is blocked
Outlet is pasted with wet/leafy material
Feed hard, dry material in with softer material
Turn the engine off, disconnect the spark plug wire and ensure rotor has completely stopped. Open up
the outlet chute and clear blockage.
The material is ejected in long strips
•The knives and/or anvil might be blunt
Once the engine has been given enough time to slow
down to idle speed (about 10-15 seconds), disengage the
rotor by winding the engagement handle in the counter
clock-wise direction until the handle comes to a stop.
WARNING! Only engage and disengage the rotor at
idle speed otherwise excessive vibration and belt friction
may cause damage.
Allow the engine to cool down by running at idle for at
least 1 –2 minutes before shutting down. Turn the
ignition key anti-clockwise into the off position to shut
the chipper down.
WARNING! The heavy rotor will continue to turn for
some time after the engine has been shut down. Do not
open the rotor housing cover until the engine and cutting
disk have completely stopped and the rotor is
disengaged.
2
3

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
11
Turn the engine off, disconnect the spark plug wire and ensure rotor has completely stopped. Inspect
and sharpen or replace knives and/or anvil as required. Ensure correct clearances between knives and
anvil
The chipper starts making unusual noise, the cutting rotor strikes a foreign object or the chipper starts to vibrate
Turn the engine off, disconnect the spark plug wire, ensure rotor has completely stopped, then inspect
for damage
Replace or repair any damaged parts
Check for and tighten any loose parts
Do NOT attempt to repair the chipper unless you are competent to do so
The chipper stalls when material is being fed
Auto Feed Control is not working
Check that AFC is on
Check the Autotrip setting is not at setting 0 or 20 (manual mode)
If AFC is not working, contact Hansa
The feed roller is not turning
Engine is not running at full throttle
Increase the engine throttle to max RPM
The feed roller is running too fast/slow
Hydraulic pump belt loose/broken
Tension/replace belt
Maintenance & service
Knife re-sharpening and knife replacement
How do I know that the knives need re-sharpening?
Chipper is vibrating excessively when processing material
Chipper is making more noise than usual when processing material
Rotor RPM is dropping more quickly than usual
Material comes out in long strips
How to re-sharpen the knives:
If you don’t have a surface grinder or are unsure how to re-sharpen the knives, contact a professional saw doctor or Hansa to
arrange re-sharpening.
Tools and materials required for re-sharpening (approx. 40 mins):
•24 mm ring spanner
•19 mm ring spanner
•16 mm ring spanner
•14 mm Allen key
•Torque wrench with a 24 mm socket and 16mm crows-foot wrench
•A stick magnet (optional)
•Surface grinder
•Coolant
WARNING! Do NOT open the housing unless the engine and cutting rotor have completely stopped.
WARNING! Always ensure personal protective equipment (such as gloves and safety glasses) are used when servicing,
repairing, or conducting maintenance on your chipper. During maintenance or repair, ensure measures have been
taken to prevent unauthorised starting of your machine.
WARNING! Do NOT operate your chipper with blunt knives.
Blunt knives will cause excessive vibration
Blunt knives result in damage to the chipper
WARNING! Be careful when working around the sharp knives. Be aware that even though the engine is switched off,
the cutting means can still move.

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
12
Remove the knives for sharpening:
Open the rotor housing cover by removing
the two housing cover locking bolts with a 19
mm spanner, then lift the rotor housing cover
to access the cutting rotor. Rotate the cutting
rotor to gain access to the knives, then insert
the rotor pin (normally located under the
control panel) into the housing and through
the cut-out in the rotor to lock it in place.
Using a 24 mm spanner and a 14 mm Allen
key, remove the knives from the rotor. There
are three bolts that you must remove on
each knife to do so.
Be careful not to drop the bolts or
knives into the chipper.
A stick magnet can be used to retrieve
them if this does occur.
Measure the width of the knife and check that
it will be at least 96 mm after sharpening.
If the knives will be shorter than 105 mm,
then the knives should be replaced. Please
contact your nearest Hansa dealer.
Sharpen the knives:
Sharpen the knives on a surface grinder. A
cutting angle of 36 ° is critical for the
performance of the chipper. Make sure there is
plenty of coolant used when grinding to avoid
softening of the steel knives.
Note: You do not need to sharpen your knives
unless both sides of the reversible knives have
been used.
1
2
3
MIN 96 mm
4
36 °
Rotor
locking pin

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
13
Reinstall the knives:
Clean all mounting surfaces and remount the
knives in the reverse procedure. Torque the
knife clamping nuts up to 190 Nm.
After sharpening, the width of the knives will
have been reduced, therefore the gap between
the knives and anvil may require adjustment.
There should be 3 mm of clearance between the
knife and the anvil. If there is not enough
clearance, the knife edge may touch the anvil
through deflection when cutting heavy
branches and damage the sharp edge. Too much
clearance will allow small twigs and fibrous
materials to be dragged through without being
cut.
To adjust the gap between the knives and the
anvil, first loosen the locking nuts from the
adjustment bolts on the anvil mounting plate
using a 16 mm spanner. Now tighten or loosen
the two adjustment bolts. Tightening these
bolts will cause the anvil mounting plate to slide
further along the slotted holes. Ensure you
tighten the two bolts evenly to avoid setting the
anvil on an angle.
Once the correct anvil position has been set,
ensure the locking nuts on the adjustment bolts
are tightened. Additionally, ensure the clamping
nuts are torqued to 44 Nm.
Remove the rotor pin and turn the rotor slowly
by hand to check that it turns freely.
Close and secure the outlet chute.
WARNING! Every time the knife clamping bolts are torqued up to 190 Nm and loosened off again, the life of the
bolts is reduced. The knife clamping bolts must be replaced at most after every six sharpens. Contact Hansa for
replacement bolts (m16x50 countersunk bolts of grade 12.9 or higher). Use only genuine Hansa bolts.
5
6
7
Locking nuts
Rotor disk
Clamping bolts
Knife
Countersink
clamping bolts
Adjustment bolts
Anvil
Rotor
disc
Knife
3 mm
clearance
Bearing
Top view: Knife and anvil set-up
Spring washers

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
14
Anvil adjustment
Whenever the chipper knives are inspected/sharpened, the condition of the anvil should also be checked. If the edge of the anvil
is significantly rounded and/or uneven, then it should be reversed or replaced. Typically the anvil will maintain its flat edge for
about 500 hours of operation.
Anvil replacement
Remove the feed roller guard by unhooking the
four rubber latches. Unhook the springs from the
base of the chassis. Lift the swing arm up and
insert the rotor pin (located underneath the
control panel) into the tab on the housing to lock
the swing arm in place (as per the diagram
below).
To remove the anvil, you must remove the three
countersink clamping bolts using a 16 mm socket
and extension. If the bolt head turns, hold it with
an 8 mm Allen key.
Note: Do NOT use the Allen key to turn the bolt;
turn only the nut.
Note: Ensure the gap between the knife holding
block and the edge of the anvil is 4 - 5 mm. If not,
then the anvil can be adjusted via the two
adjustment bolts between the clamping bolts.
If the other side of the anvil hasn’t been used yet: rotate the anvil 180 degrees and place it back on the feed
roller housing wall. If both sides of the anvil are blunt: remove the anvil and replace it with a new one. Contact
Hansa if a replacement anvil is required.
Tighten the clamping bolts back up using a 16 mm spanner/socket, ensuring there is a spring washer between
the clamping plate and each nut. Torque the bolts to 44 Nm.
Belt tension
Correct belt tension is crucial for minimising belt wear and maximising machine efficiency. To check the belt tension, the belt guard
must first be removed (see step 1 of ‘Belt replacement’ on page 16). After the belt guard is removed, fully engage the belt. There
should be approximately 5 mm deflection in the belt when pressing firmly on the belt (as per the image below). If required, adjust
belt tension.
1
2
3
4
Countersink
clamping bolts
Rotor
locking pin
Feed roller motor
Swing arm
Check for
deflection
here

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
15
Belt tension adjustment
Using two 24 mm spanners, unlock the two locking nuts
from above the adjustment block on the engagement
handle by turning the top nut anti clockwise and the
bottom nut clockwise. Then move both locking nuts
upward along the thread.
From the fully disengaged position, gently turn the
engagement handle clockwise until you feel it start to
resist. From this position, turn the engagement handle
two full revolutions in the clockwise direction, or until
there is a significant resisting force on the handle (there
should be about 5 mm deflection when pressing firmly
on the belt). This is the recommended tension for the
belt drive when in the fully engaged position.
Note: For new belts, allow another half revolution as the
tension will need to be increased after belt wear.
Using two 24 mm spanners, screw the two M16
adjustment nuts downwards until they touch the
adjustment block. Then turn the top nut clockwise and
the bottom nut anti clockwise simultaneously to lock
the nuts in place.
The new belts will wear into the pulley. Recheck the belt
tension after 10 hours of machine operation, and if
necessary, adjust them to the correct tension by
repeating this process.
Belt replacement
If the belts in your chipper look similar to any of the following images or are clearly broken, then they need to be replaced.
1
2
3
Adjustment
block
Adjustment
nuts
Adjustment
block
Adjustment
nuts
Cracked underside of belt
Sidewall belt wear
Soft, swollen belt
Worn cover on back of belt
Split belt cover

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
16
If a belt change is necessary, follow these steps
Using a 5 mm Allen key, unbolt and remove the pulley
guard (6 x M8 cap screws).
Turn the engagement handle counter clockwise until the
belt is fully disengaged. Remove old belts and replace (3 x
B46 vee belts).
Note: The belts pass in between the idler wheel and belt
guide on the tensioner arm.
Note: Engine not shown in this view.
Fasten the pulley guard back into place. Ensure belts are
properly tensioned (follow the ‘Adjusting belt tension’
process on page 15) before starting the chipper.
Greasing bearings & pivot points
Points that need to be greased are as follows (as per the diagram on the following page).
1. Two bearings on the rotor shaft, one under the engine cover and the other above the inlet opening
2. Two bearings on the feed roller
3. Two bearings on either side of the feed roller pivot
4. Outlet chute swivel, two grease nipples
5. One grease nipple on the engine engagement screw
These points must be greased every 50 operating hours. Ensure a suitable grease is used (bearing grease or all-purpose grease).
1
2
3
Tensioner arm
Belt guide
Idler Wheel

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
17
Hydraulic system
Replace oil filter after first 50 hours, then every 250 hours.
The hydraulic oil should be changed every 800 hours. It is a closed system therefore it should not become contaminated, however
if contamination is detected oil should be changed. Use only a good quality brand, 32 grade hydraulic oil.
Fill the hydraulic oil tank so that the oil level is approximately 5-10 mm above the bottom of the filler cap sieve.
For any repair in the hydraulic system, contact Hansa Products or seek advice from a competent service agent.
Engine servicing
For servicing of the engine, please refer to the engine manual. Change oil, oil filter, fuel filter and air filter as recommended in the
manual. Ensure the correct engine oil is used.
Other servicing
✓Check all bolts and other fasteners for the correct torque setting
✓Check wheel nuts and U-bolts are fastened correctly
✓Check and repack wheel bearings with grease every 12 months
✓Check air pressure in tires. Inflate to pressure as indicated on the tire
✓Check safety chains and hitch
Rotor bearing replacement
Replacing rotor bearing on inlet chute side of rotor:
1. Remove the four bearing guard buttonhead screws using an 8mm Allen key
2. Remove two grub screws in the bearing.
3. Remove M10 bolts and shaft locking washer at the end of the shaft.
4. Remove four M16 bolts bolting bearing to housing of machine.
5. Slide bearing off the shaft using a bearing puller. If the bearing is corroded to the shaft, try applying some heat to the
bearing or cut open using an angle grinder. Ensure the shaft is not damaged.
6. Replace bearing with FAG branded bearing only.
7. Re-assemble in reverse order.
Replacing rotor bearing on engine side of rotor:
1. Remove engine pulley by unbolting both grub screws in bush. Then screw one grub screw into the third hole and tighten
until the pulley separates from the bush. Slide bush off the shaft, followed by the pulley.
2. Remove two grub screws in the bearing.
1
2
3
4
5
6

Hansa C27EU O&M Manual –OM-023 Revision A 16/10/19
© Hansa Chippers 2019
18
3. Remove M16 nuts and bolts bolting the bearing to the housing.
4. Remove and replace bearing.
5. When replacing the pulley ensure the rotor pulley is lined up to the engine pulley with a straight edge. Ensure the grub
screws are tightened evenly so the pulley is tightened evenly.
6. The gap between the end of the sensor and the sensing plate should be approximately 3 mm. Adjust the sensor
accordingly. If it is set further away, then the sensor may not work properly and therefore the AFC will not work.
Tyre Pressure
The recommended tyre pressure is 65 Psi.
Maintenance & service intervals
Maintenance interval - service hours
10 or
50 or
100
250
500 or
800
Yearly
As req.
Service
Daily
Weekly
Biannually
Engine oil change - initial change
Initial
Hydraulic oil filter - initial replacement
Initial
Belt tension –check
Initial
Engine oil level –check
•
Air cleaner element –clean
•
•
Bearings –grease
•
Engine engagement rod –grease
•
Outlet swivel –grease
•
Knives–check, sharpen or replace
•
•
Belt guarding –remove and clean chip build-up
•
•
Drive belts tension - check/adjust
•
Hydraulic pump belt tension - check/adjust
•
Engine oil & filter –change
•
Nuts & bolts –check torque
•
Tires & rims –check
•
Hydraulic system –check
•
Hydraulic oil filter - replace
•
Battery terminals - check
•
Engine fuel filter –replace
•
Outlet chute –remove & clean swivel
•
Feed roller tension springs - replace
•
•
Air cleaner element –replace
•
Hydraulic oil & filter –replace
•
Feed roller teeth –sharpen
•
•
Engine system
•
Battery –replace
•
Drive belts –replace
•
Hydraulic pump belt –replace
•
Knives –replace
•
Anvil –replace
•
Hazard labels –replace
•