Farmi 381 HFC Guide

FARMI 381 HFC / HF Expert
CHIPPER AND HYDRAULIC FEEDER /
FEED CONVEYOR
READ THIS OPERATION AND MAINTENANCE MANUAL CAREFULLY
BEFORE USING THE MACHINE
EXCLUSIVELY FOR GRAB LOADER FEED!
MANUAL FEED PROHIBITED!
OPERATION, MAINTENANCE AND SPARE PARTS MANUAL
FROM MACHINE:
3800149
TRANSLATION OF
THE INSTRUCTION MANUAL
B-EN-111217-ER
43804010

FARMI 381 HFC / HF
3
TABLE OF CONTENTS
When ordering spare parts, please indicate the machine’s type from the machine plate, spare part’s order
number, description and quantity required. Example. CH381HF, 43800450, knife, 4 pc
INTRODUCTION 4
GENERAL SAFETY INSTRUCTIONS 6
GENERAL SAFETY INSTRUCTIONS FOR THE CHIPPER 9
STICKERS AND PLATES 10
TECHNICAL INFORMATION 13
MOUNTING 18
OPERATION 20
CONTROL EQUIPMENT 20
STARTING UP THE CHIPPER 21
STARTING THE TRACTOR PTO 21
NO STRESS SYSTEM 22
CHIPPING 23
STOPPING THE CHIPPER VIA THE TRACTOR DRIVE 23
ADJUSTMENT OF THE FEED SPEED 23
CHIPPER TRANSPORTATION 24
STORAGE 24
MAINTENANCE 25
KNIFE MAINTENANCE 29
WIPER KIT 32
CHIP LENGTH ADJUSTMENT 33
SPLINED SHAFT REPLACEMENT 34
CHIPPER 36
KNIFE, ROTOR AND BEARING UNIT 40
03805700 DISCHARGE PIPE, COMPLETE from serialnumber 3800100 42
03800090 ACTUATOR FOR DISCHARGE CHUTE ROTATION, COMPLETE 44
HYDRAULIC UNIT HD381 46
03801160 TWIG CRUSHER, COMPLETE 47
HYDRAULIC FEEDER HF381 03800060 48
FEED CHUTE HF380 50
FEED CONVEYOR FC381 52
HYDRAULICS 54
HOSE SERIES: DIRECTIONAL CONTROL VALVE FROM ABOVE 58
HOSE SERIES: PUMP HOSES 60
HOSE SERIES: FRONT HOSES 62
HYDRAULICS CIRCUIT DIAGRAM 64
PRODUCT REGISTRATION FORM 68

FARMI 381 HFC / HF
4
PRODUCT WARRANTY
Farmi provides a 12-months warranty on all Farmi products.
Register on our home page (www.farmiforest.) under FeedBack (”Product Registration” form) within 30 days
after the receipt of the product to get full product warranty and additional information on your product. If it
is not possible for you to register via internet, please register as follows: Complete the registration form on the
last pages of this manual and return it to us within 30 days after the receipt of the product.
WARNING SYMBOLS IN THIS MANUAL
• imminent danger which could cause serious personal injury or death
• danger which could cause personal injury
• conditions or misuse that could damage equipment or machinery
• reminders, such as for performing checks or carrying out
maintenance or repair procedures
INTRODUCTION
This manual includes the information and maintenance instructions required for operating the machine in the
optimal manner.
Although you have experience in using this kind of machinery, read the operation and maintenance instruc-
tions carefully since they include information enabling ecient and safe operation. Regular maintenance is the
best way to guarantee the ecient and economical performance of the machine.
Each and every operator must read, understand, and follow all safety instructions
and procedures.
CUSTOMER FEEDBACK
We are happy to receive your opinions and suggestions for improvements by mail, fax or e-mail. All implemented
suggestions for improvements will be rewarded.
DANGER!
!
WARNING!
!
CAUTION!
!
CAUTION!
!

FARMI 381 HFC / HF
5
Manufacturer:
Farmi Forest Corporation
Ahmolantie 6, FIN-74510 IISALMI, Finland
Person authorized to compile the technical documentation:
Name: Matti Berg
Address: Ahmolantie 6, FIN-74510 IISALMI, Finland
Commercial name:
Farmi
Machine denomination:
Farmi wood chipper with Farmi feed hopper
Machine type:
FARMI 381 HFC / HF
Machine series number:
Herewith, we declare that the machine brought into circulation conforms with
the pertinent requirements of the Machinery Directive 2006/42/EC and
the EMC Directive (directive relating to electromagnetic compatibility) 2004/108/EC.
The following harmonized standards have been applied for the conceptional design
of the machine:
SFS EN ISO 12100
The following additional standards and specications have been applied for
the conceptional design of the machine:
SFS ISO 730-1, SFS ISO 2332
Iisalmi 11.12.2017
(Place) (date)
Sami Jerkku
EC DECLARATION OF CONFORMITY
Original declaration of conformity

FARMI 381 HFC / HF
6
GENERAL SAFETY INSTRUCTIONS
These safety instructions are meant for the owners
of FARMI equipment, as well as those who operate, ser-
vice or repair it.
The instructions help with:
• using the machine safely, appropriately and eec-
tively.
• identifying, avoiding and preventing potentially
dangerous situations.
The manufacturer supplies an instruction manual,
which must always be available at the place of ope-
ration of the machine. Each user must read the sa-
fety, maintenance and operating instructions
before operating the machine, and comply with
these instructions at all times.
Ensure that every operator of
the machine is familiar with the
content of the instruction ma-
nual and situation-specic safe-
ty instructions, and has been sui-
tably trained before operating
the machine.
The machine complies with technical requirements
and applicable safety regulations. However, incorrect
use, maintenance or repair of the machine may cau-
se risks.
In addition to the instruction manual, remember to
comply with regulations of the local occupational
health and safety authorities, and with your country’s
laws and decrees.
The manufacturer is not liable for damages caused
by:
• incorrect, negligent or inappropriate use of the
product.
• non-original spare parts.
• normal wear and tear.
•
misuse caused by an untrained person’s
improper actions.
•
alterations made without the manufacturer’s
permission.
Written authorization must be
requested from the manufacturer
for any alterations to the machine.
STARTING
• Familiarize yourself thoroughly with the use, ope-
ration and controls of the machine and its equip-
ment before starting.
• Familiarize yourself with the capacities and limita-
tions of the machine and its equipment.
• Do not use the machine unless you are complete-
ly familiar with its operation.
• Be aware of the machine’s danger zones.
• During operation, prevent bystanders from ente-
ring the danger zone.
• Ensure that each operator has the necessary safety
equipment, such as a helmet, safety goggles, work
safety boots and suitable protective clothing.
•
Never wear loose clothing around moving parts.
Protect long hair!
• Ensure that work is carried out according to the
stipulations of applicable occupational health and
safety legislation.
• Before starting up or using the machine, ensure
that it cannot cause a risk to other people or pro-
perty.
• Perform a safety check on the machine before eve-
ry use. If you observe any faults or deciencies, re-
pair the machine immediately.
• Before operating the machine, ensure that there
are no foreign articles in it.
• Place the machine on a hard, level surface for
operation. In the winter avoid working in slippe-
ry areas.
•
Before mounting and using the machine, check
the PTO drive shaft for correct condition and
attachment.
• Never use a faulty or decient machine.
CAUTION!
!
CAUTION!
!

FARMI 381 HFC / HF
7
TRANSPORT
•
Before driving with the machine, ensure the sa-
fe mounting of the machine. Make sure that the
journals are seating correctly and that the pins are
tight. Check the tension of the lower link stabilizers.
• Before driving with the machine, make sure that
the required lamps and reectors as well as the
slow moving vehicle sign are attached correctly.
Moreover, the lamps should be checked for cor-
rect functioning.
•
Before driving with the attached machine, ma-
ke sure that the hydraulic unit of the machine is
depressurized (unless otherwise instructed in the
operating instructions).
• When driving on public roads, always observe the
valid trac regulations. The travel speed must be
adapted to the specic conditions.
• When driving, please take into consideration the
additional mass resulting from the machine’s
weight. It may aect the reactions, the steerability
and the braking function of the tractor.
• Please note that the machine rear sways when tur-
ning.
• Pay attention to the machine’s height near bridges
or other height restricting objects.
• When backing o, the machine may obstruct the
rear view. Exercise extreme caution. If necessa-
ry, ask a agman to help you; he can indicate the
required distances.
•
It is prohibited for other people to ride on the
machine.
OPERATION
Many occupational accidents ta-
ke place in abnormal
circumstances. Therefore it is im-
portant to take into account all
the possible circumstances that
may arise during operation of
the machine.
•
Depending on the machine’s type, it will have
diverse safety devices and protectors. These are
meant to protect the machine and its operator, and
they must never be removed or altered. Never start
up or use the machine without all the safety devi-
ces and protectors in place. Also check the univer-
sal joint’s safety equipment and joins.
• Never insert any body part into the machine with
the engine running.
• If any faults arise that may jeopardize occupational
safety, turn o the machine.
•
During operation, the machine’s operator is res-
ponsible for safety in the whole work area. Work
may not be carried out in the presence of any fac-
tors that jeopardize occupational safety.
•
Exercise extreme caution when hitching / unhit-
ching the machine from a tractor/trailer.
The machine’s operator must ha-
ve constant, unobstructed visibi-
lity of the work area. If this is not
possible, the operator must work
with an assistant.
• Look out for moving parts when the machine is in
operation.
•
Secure the machine against unauthorized and
accidental operation (e.g. moving when parked)
whenever it is left unattended.
• Never leave the machine running unattended.
• Avoid causing fast, stroke-like loading.
• Never exceed the given operating values.
• All safety and warning signs on and in the machi-
ne must be legible and intact.
•
The machine may not be operated by persons who
are unwell or under the inuence of drugs or alco-
hol.
MAINTENANCE
•
The machine may only be serviced and repaired by
professionals.
•
Electrical and hydraulic faults may only be repaired
by authorized professionals.
• In cases requiring welding, contact the manufac-
turer.
•
Turn o the tractor engine and disconnect the
universal joint before beginning service or main-
tenance actions.
• Before any maintenance work, turn the main po-
wer switch of the tractor to OFF.
•
Ensure that there is no pressure in the hydraulic
system.
• Take out the key from the tractor’s ignition for the
duration of the servicing or maintenance. Check
that the power is o from the machine you are
working on.
•
When servicing the machine, place it on a level sur-
face and ensure that it cannot be moved.
!
DANGER!
CAUTION!
!

FARMI 381 HFC / HF
8
•
Observe the service intervals and annual safety
inspections.
• All spare parts and equipment must fulll the
manufacturer’s requirements. This can be guaran-
teed by using original parts.
• Put all safety devices back into place immediately
once servicing or maintenance is complete.
When lifting the machine, check
that the lifting/hoisting equip-
ment is in perfect working order.
Check the weight of the machine
before lifting it. Choose lifting
trajectories so that they do not
cause any danger.
Many countries have specic legislation on lifting, hois-
ting cables and hoists. Always comply with local safe-
ty regulations.
OILS AND LUBRICATION
• Always use the oil types recommended by the
manufacturer. Other types of oil may cause
faults or improper operation of the equipment,
which could lead to serious damage to people or
property.
• Never mix dierent liquids or oils.
•
Always follow the manufacturer’s lubrication
instructions.
• Use control equipment carefully until the hydraulic
oil has had time to reach its operating temperature.
SAFETY INSTRUCTIONS FOR HYDRAULIC CIRCUITS
1. Work on hydraulic equipment may only be carried
out by professional hydraulic engineers.
2. Be cautious when using the equipment in cold c
onditions.
3.
Check the machine for leaks. Do not use the
machine if there is a leak from any system. Check all
hydraulic hoses – particularly those which are bent
during use – and replace any that are in poor con-
dition or have leaks. Ensure that all joins are tight
and that the lines are not damaged. Check that all
protective caps and ller caps are closed properly.
Check the hose sheathing for damage.
4. Check that all hose connectors, lengths and
qualities comply with applicable requirements.
When replacing or repairing hoses, use original
parts or hoses and connectors recommended
by the manufacturer. Check particularly that the
pressure classes of the hoses and connectors are
suitable to the operating pressure levels.
5. Check that all safety devices such as pressure relief
valves, etc., are in place and work properly. Fami-
liarize yourself with their use. Safety systems may
never be bypassed.
6. Check the main hydraulic parts daily, and always
after a fault. Replace any damaged parts imme-
diately.
7.
If a component is damaged, clean it before
repairing it. Do not use solvents when cleaning
parts.
8.
Do not attempt to carry out repairs that you are
not fully familiar with.
9. Never carry out repairs of the hydraulic circuit when
the system is pressurized. When pressurized, the
oil spray can penetrate the skin and cause mor-
tal danger.
10. Never work below a device or component that is
only being held up by hydraulics. Use separate sup-
ports when carrying our maintenance or repairs.
Do not disconnect cylinders or their valves until
the machine is well supported.
11.
Most hydraulic oils do not evaporate easily. Risk
factors include hot oil, spills and oil mist (pressu-
rized).
12. If oil gets into your eyes, rinse with plenty of water
and contact a doctor.
13. Avoid prolonged or repeated contact with your
skin.
14.
If sprays or contact with the skin cannot be avoided,
use protective gloves, goggles and clothing as ne-
cessary. Do not use oily clothing.
15. Avoid discharging hydraulic oil into the environ-
ment, as it can pollute waterways and the ground-
water. If biodegradable oil is to be used, please
contact the manufacturer beforehand and have
the suitability of your equipment for the operati-
on with biodegradable oil conrmed by him befo-
re such oil is used.
16. Store the oil in sealed containers provided by the
manufacturer. Try to transfer the oil directly from
its container into the tank.
17. If the oil must be passed through other containers,
ensure that they are completely clean. Caps, fun-
nels, sieves and lling holes must also be clean.
18. Never store oil outdoors, as water could condense
in it.
19. Always dispose of oil in a suitable container, never
into the environment!
CAUTION!
!

FARMI 381 HFC / HF
9
GENERAL SAFETY INSTRUCTIONS FOR
THE CHIPPER
• Please make sure any machine operator has the re-
quired personal protective equipment: safety hel-
met, protective goggles, cut resistant safety boots
and required protective clothing.
• The chipper must not be used without being
mounted to a tractor. It is prohibited to mount the
chipper to another power source.
• It is not permitted to operate the chipper without
feed unit or feed hopper.
• It is prohibited to manually load the material to be
cut into a feed unit designed for grab loader feed.
• Indoor operation of the chipper is prohibited.
• Always keep a safe distance to the discharge posi-
tion of the chips.
• Detach the chipper from the tractor before perfor-
ming any maintenance or repair works. Caution! As
a sole exception, adjust the speed of the feed rol-
lers of the hydraulic feed with the machine running.
For further instructions, please see the instruction
manual of the feed unit concerned.
• Do not remove, lock, disable or modify in any
other way the stop lever of the feed unit.
• The feed hopper or the feed unit must not be
mounted at a higher or lower position as this would
impede the stop lever function.
Noise from the chipper exceeds
70 db in operation.
Wear ear protection!
!
DANGER!
CAUTION!
!

FARMI 381 HFC / HF
10
The following plates and labels must be correctly attached to the chipper.
Missing plates / labels must be replaced immediately.
STICKERS AND PLATES
Number 1. Machine plate CH381HF / HFC (43806940)

FARMI 381 HFC / HF
11
2. CAUTION!
Please read the operating instructions of the machine
meticulously before you operate, maintain or repair the
machine. During machine operation, please observe the
operating and safety instructions. (40147020)
3. (40147000)
CAUTION!
Before operation, mount the chipper to the 3-point hitch
of the tractor.
CAUTION!
Before maintenance and repair, please turn o the
tractor and disconnect the PTO drive shaft.
CAUTION!
Before detaching the chipper from the tractor, it must be
placed on a level surface..
4. Wear personal protective equipment. (40142080)
5. Cutting hazard! (40147010)
6. Lifting point sticker (41014270)
7. SPEED sticker (40141160)
Recommended speed range.
The rated speed must not be exceeded.

FARMI 381 HFC / HF
12
8. Farmi Forest sticker (40146900)
9. Crushing hazard sticker (41015600)
Always keep a safe distance to rotating parts.
12. Max. hydraulic pressure 190 bar. (40147060)
13. Type sticker (40147570)
10. (30146990) 2 pcs
CAUTION!
Manual feed prohibited.
CAUTION!
Crushing hazard! Always keep a safe distance to
rotating parts.
CAUTION!
Safe distance 20 meters.
11. Operation from the driver seat in the tractor’s safety
cab. (40147050)
14. Warning of accumulator (40147400)

FARMI 381 HFC / HF
13
1
10
9
8
7
6
5
4
3
2
11
13
12
INTRODUCTION
The FARMI 381 is a 4-knived chipper designed for
grapple loader feeding of up to 380 mm diameter
stems. The chip size can be adjusted to suit its various
end uses, such as biofuel, industrial raw material, soil
improvement or dry litter.
The HF381 hydraulic feed chute facilitates processing
of dicult to feed materials.The feed chute comes stan-
dard equipped with No Stress revolution control, which
shuts down the feed when the output Rpm drops too
low. The benets of the No Stress mechanism are:
• tractors of lower power rating can be used
• more homogenous chip quality
• higher chip yield.
The FARMI 381 HF chipper has its own hydraulic unit.
TECHNICAL INFORMATION MAIN COMPONENTS
1. Upper chamber
2. Lower chamber
3. Cutting disk
4. Knife
5. Vertical anvil
6. Horizontal anvil
7. Breaker
8. Discharge pipe
9. Feed unit frame
10. Feed hopper
11. Roller swing
12. Wiper
13. Conveyor feeder

FARMI 381 HFC / HF
14
TECHNICAL INFORMATION FARMI 381 HFC
Type Double disc chipper
Output, m3/h 30-70
Max. stem diameter, mm 380
Feed opening, mm 380 x 420
Chip length, mm / 540 - 1000 rpm 10 - 30
Power demand, kW 125-180
Operating rpm min 540 - max 1000
Number of knives 4
Disc drive direct, splined shaft 1 3/4”, 6 splines
Power source tractor PTO
Assembly 3-point hitch
Chipper weight, kg 1970
Disc ø, mm 1460
Disc weight, kg 600
2-roller hydraulic feed standard
Discharge pipe 300orotating
Discharge control hydraulic
Operating pressure 200 bar
No Stress rpm guard standard
Discharge height, m 4,1
Feed control Radio remote control / display panel / foot pedal
Twig breaker standard
Hydraulic unit HD38 45 l / 200 bar
Sound pressure level
SFS-EN ISO 4254-1:2014, ISO 11201:2010
(Measurement Uncertainty 2,5 dB)
100,3 dB(A)
Sound power level
ISO 3744:2010
(Measurement Uncertainty 5 dB)
120 dB(A)

FARMI 381 HFC / HF
15
4120
835
2347
1135
450
2002
(163 3/16”)
(34 14/16”)
(92 6/16”)
(44 11/16”)
(17 11/16”)
(78 13/16”)
2250
HF380
transport position

FARMI 381 HFC / HF
16
HFC381

FARMI 381 HFC / HF
17
HFC381
transport position

FARMI 381 HFC / HF
18
MOUNTING
LIFTING
The lifting points are marked on
each machine with hook sym-
bols.
Only use appropriate lifting equipment of sucient
lifting capacity to lift the equipment.
Lifting belts, cables and chains used for lifting must be
checked regularly.
The weight of the load to be lifted must be known.
Never exceed the lifting capacity limit specied by the
lifting device manufacturer.
Avoid lifting equipment over areas where people may
be present.
MOUNTING
• Attach the chipper to the tractor’s 3-point hitch.
• When handling the chipper, ensure that it is coup-
led to the 3-point hitch.
• Check that the power take-o (PTO) drive shaft is
the correct length. For details on shortening the
PTO shaft see the Power Take-O Shaft” section.
• Check that the PTO shaft shields are in place and
the shield rotation prevention chain is attached.
POWER TAKE-OFF SHAFT
Tractor’s PTO drive shaft
dimensions should be 1 3/4” to
maximize its operating life.
PTO shaft recommendations:
• Bondioli & Pavesi 10 (106 kW / 540 rpm) with over-
running clutch
• Walterscheid W2600 + F3 with overrunning clutch
An overrunning clutch must be mounted to the axle
head on the chipper’s power take-o.
If the PTO shaft is too long it
might damage chipper’s bea-
rings or the tractor’s power take-
o shaft when using the 3-point
hitch . Shorten the both ends of
PTO shaft equaly.
CAUTION!
!
CAUTION!
!
CAUTION!
!

FARMI 381 HFC / HF
19
A
A
40
12
E
C
D
AB
SHORTENING THE PTO SHAFT
1. Connect the device to the tractor’s 3-point hitch.
2. Lift the machine with the hitch so that the distance
between the splined shafts is at its shortest.
3.
First cut the thicker shaft shield to the correct
length. Remember to leave a 40 mm clearance.
Next, cut a similar length from the prole tube.
Shorten the other half of the PTO shaft in a similar
manner. File o the burr.
4. Interconnect the tubes and check that the shaft is
suciently shortened by carefully lifting up and
down with the hoist. Ensure that the shaft has a 40
mm movement clearance. Also move the machi-
ne sideways to check that the shaft moves freely.
Distance A, when the distance between the splined shafts
is at its shortest.
Shortening the PTO shaft
MOUNTING THE FEED CHUTE
1. Fix the feed chute frame to the chipper with pins
(A) and locking screws (B).
2. Fix the feed chute to the frame on both sides with
pins (C) and cotter pins (D) Lock the chute in the
operation position (E).
Fixing the feed chute frame to the chipper
Fixing and locking the chute to the feed chute frame

FARMI 381 HFC / HF
20
OPERATION
INSPECTION PRIOR TO USE
• Position the chipper on a level, hard surface.
•
Carry out the inspection with the tractor engine
switched o and the chipper disc fully stopped.
• Check that the disc rotates freely and that the chip-
per is free of any foreign objects.
• Check that all protective equipment is in place and
in good condition. Do not remove any protective
shields.
Check the oil level of the hydrau-
lic oil reservoir. The oil level eye-
let must be covered.
•
Check the tightness of the hydraulic pump belt, see
”Maintenance”
• Check the condition and tightness of hoses and
couplings.
CONTROL EQUIPMENT
The feed chute is operated from a remote control panel
either with a manual switch or foot pedal.
1. STOP
Feed rollers stop rotating.
2. FEED FORWARD = FF
(Right-hand foot pedal)
The feed rollers begin rotating inwards and wood
can be fed into the chipper.
3. REVERSE = REV
(Left-hand foot pedal)
The feed rollers begin rotating outwards and
wood can be removed from the rollers.The opera-
ting switch returns automatically to the STOP po-
sition.
Do not operate in temperatures
-20oC due to the risk of cold britt-
leness damage which can occur in
particular with the knife blades.
Avoid chipping wood which has
frozen through, as this weakens
the self-feed function.
ROTATING KNIVES!
Serious risk of cutting injury. Ne-
ver place hands into the feed
chute.
FIRE HAZARD!
Always keep appropriate re ex-
tinguishing equipment near to
hand when using the chipper. Mo-
nitor the surface temperature of
the chipper.
If the chipper begins to overheat, stop the chipper
and investigate the cause.
Monitor the temperature of the bearings. Carry out
regular maintenance and keep the chipper clean of
dust.
CAUTION!
!
DANGER!
!
WARNING!
!
CAUTION!
!
Feed
rew / 
Feed roller up /
press
Feed rollers
speed
Vizor up /
down
Discharge pipe
left / right
Navigation keys
No stress
areas
No stress
teaching