MetalMaster PB-422L User manual

HYDRAULIC NC PANBRAKE
OPERATION MANUAL
Edition No : PB-422,820 - 1
Date of Issue : 07/2019
Models.
PB-422L, PB-820L
Order Code S576, Order Code S583
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OPERATION MANUAL
NOTE:
In order to see the type and model of the machine, please see the
specication plate. Usually found on the back of the machine. See
example (Fig.1)
Fig.1
HYDRAULIC NC PANBRAKE
MACHINE
MODEL NO.
SERIAL NO.
DATE OF MANF.
Note:
This manual is only for your reference. Owing to the continuous improvement of these
Metalmaster machine, changes may be made at any time without obligation or notice.
Please ensure the local voltage is the same as listed on the specication plate before
operating any electric machine.
Distributed by
www.machineryhouse.co.nz
MACHINE DETAILS
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C O N T E N T S:
1. GENERAL MACHINE INFORMATION
1.1 Specications............................................................... 4
1.2 Accessories.................t................................................. 4
1.3 Identication................................................................ 5
2. IMPORTANT INFORMATION
2.1 General Safety Requirements................................ 6
2.2 Safety Specic To Panbrakes.................................. 9
2.3 Lifting Instructions..................................................... 10
3. SETUP
3.1 Site Preparation........................................................... 11
3.2 Clean Up........................................................................ 11
3.3 Machine Leveling....................................................... 12
3.4 Electrical Installation................................................. 13
3.5 Full Load Current........................................................ 13
3.6 Attaching the Accessories....................................... 14
3.7 Filling The Oil Tank..................................................... 14
4. OPERATION
4.1 Setting The Clap Gap................................................ 15
4.2 Operating Controls.................................................... 16
4.3 Controller Operation................................................. 17
4.4 Start Up.......................................................................... 19
4.5 Bending.......................................................................... 19
5. MAINTENANCE
5.1 Type and frequency of Inspections...................... 19
5.2 Changing The Hydraulic Oil.................................... 20
5.3 Changing The Hydraulic Oil Filter......................... 20
5.4 Troubleshooting.......................................................... 21
Spare Parts.............................................................................. 22
Risk Assessment................................................................... 25
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1.1 SPECIFICATIONS
Order Code S576 S583
MODEL PB-422L PB-820L
Controller Type Digital Single Program Digital Single Program
Bending Length (mm) 1250 2500
Mild Steel Capacity (mm) 2 2
Stainless Steel Capacity (mm) 1 1
Material Clamping Type Hydraulic Clamp Hydraulic Clamp
Material Bending Type Hydraulic Bend Hydraulic Bend
Bending Angle Indicator (deg) 0-125º 0-125º
Backgauge Travel (mm) 1000 1000
Motor (kW/hp) 2.2/3 2.2/3
Voltage (V) 240 240
Amperage (A) 15 15
Dimensions (L x W x H) (cm) 170 x 180 x 130 290 x 180 x 130
Shipping Dimensions (L x W x H) (cm) 190 x 80 x 145 300 x 80 x 145
Nett Weight (kg) 1100 1600
1.2 ACCESSORIES
r Roving Foot Pedal With Control Panel
r Adjustable Rear Manual Backgauge
r Hydraulic Oil
r Manual
NOTE: The above specications were current at the time this manual was published, but be-
cause of our policy of continuous improvement, Metalmaster reserves the right to change
specications at any time and without prior notice, without incurring obligations
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1.3 IDENTIFICATION
1
2
3
4
6
7
8
5
1 Clamping Beam 5 Mobile Foot Control
2 Folding Apron 6 Electrical Cabinet
3 Box Fingers 7 Angle Table
4 Clamping Ram 8 Hydraulic Oil Tank
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OPERATION MANUAL
DO NOT use this machine unless you have read this manual or have been instructed in the use
of this machine in its safe use and operation
This manual provides safety instructions on the proper setup, operation, maintenance, and
service of this machine. Save this manual, refer to it often, and use it to instruct other operators.
Failure to read, understand and follow the instructions in this manual may result in re or
serious personal injury—including amputation, electrocution, or death.
The owner of this machine is solely responsible for its safe use. This responsibility includes, but
is not limited to proper installation in a safe environment, personnel training and authorization
to use, proper inspection and maintenance, manual availability and comprehension, of the
application of the safety devices, integrity, and the use of personal protective equipment.
The manufacturer will not be held liable for injury or property damage from negligence,
improper training, machine modications or misuse.
WARNING
2.1 GENERAL METALWORKING MACHINE SAFE PRACTICES
Always wear safety glasses or goggles.
 Wear appropriate safety footwear.
 Wear respiratory protection where required.
 Gloves should never be worn while operating the machine, and only worn when
handling the work-piece.
 Wear hearing protection in areas > 85 dBA. If you have trouble hearing someone speak
from one metre (three feet) away, the noise level from the machine may be hazardous.
 DISCONNECT THE MACHINE FROM POWER when making adjustments or servicing.
Check and adjust all safety devices before each job.
Ensure that guards are in position and in good working condition before operating.
 Ensure that all stationary equipment is anchored securely to the oor.
 Ensure all machines have a start/stop button within easy reach of the operator.
 Each machine should have only one operator at a time. However, everyone should know
how to stop the machine in an emergency.
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 Ensure that keys and adjusting wrenches have been removed from the machine before
turning on the power. Appropriate storage for tooling should be provided.
 Ensure that all cutting tools and blades are clean and sharp. They should be able to cut freely
without being forced.
Stop the machine before measuring, cleaning or making any adjustments.
Wait until the machine has stopped running to clear cuttings with a vacuum, brush or rake.
Keep hands away from the cutting head and all moving parts.
Avoid awkward operations and hand positions. A sudden slip could cause the hand to move
into the cutting tool or blade.
Return all portable tooling to their proper storage place after use.
Clean all tools after use.
Keep work area clean. Floors should be level and have a non-slip surface.
Use good lighting so that the work piece, cutting blades, and machine controls can be seen
clearly. Position or shade lighting sources so that they do not cause any glare or reections.
Ensure there is enough room around the machine to do the job safely.
Obtain rst aid immediately for all injuries.
Understand that the health and re hazards can vary from material to material. Make sure all
appropriate precautions are taken.
Clean machines and the surrounding area when the operation is nished.
Use proper lock out procedures when servicing or cleaning the machines or power tools.
Do not distract an operator. Horseplay can lead to injuries and should be strictly prohibited.
Do not wear loose clothing, gloves, necktie’s, rings, bracelets or other jewellery that can be
come entangled in moving parts. Conne long hair.
Do not handle cuttings by hand because they are very sharp. Do not free a stalled cutter
without turning the power o rst. Do not clean hands with cutting uids.
Do not use rags near moving parts of machines.
Do not use compressed air to blow debris from machines or to clean dirt from clothes.
DO NOT
×Do not distract an operator. Horseplay can lead to injuries and should be strictly prohibited.
×Do not wear loose clothing, gloves, necktie’s, rings, bracelets or other jewellery that can be
come entangled in moving parts. Conne long hair.
× Do not handle cuttings by hand because they are very sharp. Do not free a stalled cutter
without turning the power o rst. Do not clean hands with cutting uids.
×Do not use rags or wear gloves near moving parts of machines.
×Do not use compressed air to blow debris from machines or to clean dirt from clothes.
× Do not force the machine. It will do the job safer and better at the rate for which it was
designed.
2.1 GENERAL METALWORKING MACHINE SAFE PRACTICES Cont.
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2.1 GENERAL METALWORKING MACHINE SAFE PRACTICES Cont.
HAZARDS ASSOCIATED WITH MACHINES include, but are not limited to:
• Being struck by ejected parts of the machinery
• Being struck by material ejected from the machinery
• Contact or entanglement with the machinery
• Contact or entanglement with any material in motion
Health Hazards (other than physical injury caused by moving parts)
• Chemicals hazards that can irritate, burn, or pass through the skin
• Airborne items that can be inhaled, such as oil mist, metal fumes, solvents, and dust
• Heat, noise, and vibration
• Ionizing or non-ionizing radiation (X-ray, lasers, etc.)
• Biological contamination and waste
• Soft tissue injuries (for example, to the hands, arms, shoulders, back, or neck) resulting
from repetitive motion, awkward posture, extended lifting, and pressure grip)
Other Hazards
• Slips and falls from and around machinery during maintenance
• Unstable equipment that is not secured against falling over
• Safe access to/from machines (access, egress)
• Fire or explosion
• Pressure injection injuries from the release of uids and gases under high pressure
• Electrical Hazards, such as electrocution from faulty or ungrounded electrical
components
• Environment in which the machine is used (in a machine shop, or in a work site)
Machines are safeguarded to protect the operator from injury or death with the placement of
guards. Machines must not be operated with the guards removed or damaged.
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2.2 SAFETY SPECIFIC TO PANBRAKES
DO NOT use this machine unless you have been instructed
in its safe use and operation or have read and understood this manual.
PERSONAL PROTECTIVE EQUIPMENT
Safety glasses must be
worn at all times in work
areas
Long and loose hair must
be contained.
Gloves must not be worn
when using this machine.
Sturdy footwear must be
worn at all times in work
areas
Close tting/protective
clothing must be worn
Rings and jewelery must
not be worn.
PRE-OPERATIONAL SAFETY CHECKS
Locate and ensure you are familiar with all machine operations and controls.
Ensure all guards are tted, secure and functional. Do not operate if guards are missing or
faulty.
Ensure working parts are well lubricated and the jaws and ngers free of rust and dirt.
Check workspaces and walkways to ensure no slip/trip hazards are present
Be aware of other people in the area. Ensure the area is clear before using equipment.
OPERATIONAL SAFETY CHECKS
Remove the pan brake ngers that are in the way. Use only the pan brake ngers required
to make the bend.
Ensure the pan brake ngers that are not removed for an operation are securely seated and
rmly tightened before the machine is used.
Ensure your ngers and limbs are clear before operating the pan brake.
 Lower nger clamps to work. Do not drop.
Check workpiece is secure.
Keep clear of moving counterweight (where tted).
ENDING OPERATIONS AND CLEANING UP
Lower nger clamps to a safe position.
Return all accessories to storage racks.
Leave the work area in a safe, clean and tidy state.
POTENTIAL HAZARDS AND INJURIES
Sharp edges and burrs.
Squash/crush and pinch points.
Impact from counterweight.
DON’T
Do not use faulty equipment. Immediately report suspect machinery.
Do not use a pan brake for bending metal that is beyond its capacity for thickness, shape or
type.
Do not attempt to bend rod, wire, strap or spring steel sheets.
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2.3 LIFTING INSTRUCTIONS
On the day that the machine arrives, make sure that a crane with sucient capacity is available
to unload the machine from the vehicle. Ensure access to the chosen site is clear and that doors
and ceilings are suciently high and wide enough to receive the machine.
To handle the machine, the slings should be positioned so the machine is level when lifted.
When using slings please take note of the sling angle and the loads that apply
When the slings are at a 45° angle then each sling is
carrying the equivalent of 50% of load weight. (Fig.2.1).
When the slings are at a 90° angle then each sling will
have a weight equal to 75% of the load on each sling.
(Fig 2.2)
Note! The manufacturer recommends not to exceed 90°
angle
Fig 2.2
Fig 2.1.
When lifting the machine only certied lifting slings should be used.
Ensure that when lifting, the machine does not tip over.
Check that the lifting slings do not interfere with the hydraulic pipes or electrical conduits.
Failure to follow these instructions could cause damage to the machine
Fig.2.3
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The unpainted surfaces of the machine have been coated with a waxy oil to protect them from
corrosion during shipment. Remove the protective coating with a solvent cleaner or a citrus
based degreaser.
Optimum performance from your machine will be achieved when you clean all moving parts or
sliding contact surfaces that are coated with rust prevented products.
Metalmaster advise to avoid chlorine based solvents, such as acetone or brake parts cleaner, as
they will damage painted surfaces and strip metal should they come in contact. Always follow
the manufacturer’s instructions when using any type of cleaning product.
3.2 CLEAN - UP
3. SETUP
3.1 SITE PREPARATION
When selecting the site for the machine, consider the largest size of workpiece that will be
processed through the machine and provide enough space around the machine for operat-
ing the machine safely. Consideration should be given to the installation of auxiliary equip-
ment. Leave enough space around the machine to open or remove doors/covers as required
for the maintenance and service as described in this manual.
It is recommended that the machine is anchored to the oor to prevent tipping or shifting. It
also reduces vibration that may occur during operation. The machine should be mounted on
a reinforced concrete oor with a minimum of 150mm thickness. The oor must be able to
support the weight of the machine and any workpiece that is to be worked.
OPTIONS FOR MOUNTING
The machine is best mounted on a concrete slab.
Masonry anchors with bolts are the best way to anchor ma-
chinery, because the anchors sit ush with the oor surface,
making it easy to unbolt and move the machine later, if
needed. (Fig. 3.1)
Fig. 3.1
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3.3 MACHINE LEVELING
To set your machine up so that it operates to optimum performance, apply the following
procedure
After your machine has been anchored to a concrete slab oor, it then needs to be leveled.
Loosen the hold down bolts and place a level on the surface of the working table. A metal plate
needs to be placed under corner of the base of the machine and the jacking screw adjusted
until level. Once level then tighten the hold down bolts. (Fig. 3.3).
The machine must not rest on supports
other than those dened in Fig. 3.3
Fig. 3.2
In some case a suitable foundation may not be available
and a new one may need to be prepared.
The foundation should be concrete approximately 200mm
thick with pockets left clear for the hold down bolts. The
hold down bolts can be “L” shape as per the example in
Fig. 3.2
Fig. 3.3
Hold Down Bolt
Metal Shim
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Place the machine near an existing power source. Make sure all power cords are protected from
trac, material handling, moisture, chemicals, or other hazards. Make sure there is access to a
means of disconnecting the power source. The electrical circuit must meet the requirements for
240V. To minimize the risk of electrocution, re, or equipment damage, these machines should
be connected directly to a power point.
NOTE : The use of an extension cord is not recommended as it may decrease the life of electrical
components on your machine.
3.4 ELECTRICAL INSTALLATION
ELECTRICAL REQUIREMENTS
Nominal Voltage.........................................240V
Cycle............................................................50 Hz
Phase...............................................Single Phase
Power Supply Circuit............................15 Amps
Full Load Current...............................12.8 Amps
(Full load current rating is also on the specication plate on the motor.)
The full-load current rating is the amperage a machine draws at when running at 100% of the
output power. Where machines have more than one motor, the full load current is the
amperage drawn by the largest motor or a total of all the motors and electrical devices that
might operate at one time during normal operations.
Full-Load Current Rating for these machine at 240V is 12.8 Amps
It should be noted that the full-load current is not the maximum amount of amps that the
machine will draw. If the machine is overloaded, it will draw additional amps beyond the
full-load rating and if the machine is overloaded for a long period of time, damage, overheating,
or re may be caused to the motor and circuitry.
This is especially true if connected to an undersized circuit or a long extension lead. To reduce
the risk of these hazards, avoid overloading the machine during operation and make
sure it is connected to a power supply circuit that meets the requirements.
3.5 FULLLOAD CURRENT RATING
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3.6 ATTACHING THE ACCESSORIES
qBolt on the two apron safety guards (Fig 3.4)
Fig. 3.4
Fig. 3.6
Fig. 3.5
Before the machine is operated the accessories need to be assembled and mounted onto the
machine. The following accessories need to be tted
NOTE: the machine must not be used unless the safety guards have been installed correctly.
qConnect the roving foot pedal to the machine by insert-
ing the two control cables and locked in by screwing the
securing cap on to the plug. (Fig. 3.5)
qInstall the manual back gauge making
sure that the packing blocks are in place to
raise the back gauge to the correct height
(Fig. 3.6)
3.7 FILL THE HYDRAULIC OIL TANK.
To ll the tank with oil
1. Remove the oil tank cover.
2. Make sure the inside of the tank is clean and
clear of any dirt
3. Using a pump, ll the tank with oil until the level
reaches the centre mark of the oil indicator.
Observation of the oil level indicator should be
done regularly to ensure the oil is kept at the
same level.
When lling the tank with oil, make sure that
the top of the tank is clean and free from dust
and dirt.
Fig. 3.7
Oil Level Indicator
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4. OPERATION
4.1 SETTING THE CLAMP GAP
Before operating the machine the clamp gap needs
be set to match the material thickness
The Clamp gap must be set to a minimum of 1.5 x
material thickness. (Fig. 4.1)
Example: If the material that is to be bent is 2mm
then the clamp gap must be set to a minimum of
3mm.
Each panbrake may have dierent mechanisms for
adjusting the clamp gap but the formula of 1.5 x
Material Thickness must be maintained to prevent
overload and possible damage.
These machines are tted with an easy to use clamp
beam adjustment. There are two adjustment screws
(Fig.4.2) on the machine situated on each side of
the machine.
To adjust
1. Loosen the lock screws on both sides
2. Turn the two adjusting screws until the gap
(Fig.4.2) is correct.
3. Tighten the two lock screws and recheck the gap
If needed, a combination of top clamp adjustment
and apron adjustment can be applied.
NOTE: The locking bolts on the apron must be re-
leased before adjusting, then tightened when the
correct height is reached.
RETURN LENGTH - LIMITATION
Caution - There is a minimum “Return Length” of 15
x Thickness of Material when bending thicker mate-
rial over 1mm. Damage could occur to the machine
if the return is too short.
Example: If bending 2mm the minimum return
length must be 30mm (Fig. 4.4)
Fig. 4.1
Clamp Finger
Folding arm
gap
Fig. 4.2
loCk sCrew
adjusting sCrew
Fig. 4.3
Fig. 4.4
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4.2 OPERATING CONTROLS
The controls for the machine are situated on the roving foot pedal
123
4
5
6
7
8
9
10
11
12 13
1.` Power Button: Switches the electrical circuit on
2. Yoto Controller: Programs the operation (See 4.2 Controller Operation).
3. Emergency Stop: When pressed switches o the electric circuit of the machine. The red
knob must be twisted to be released before the machine can be restarted.
4.` Dwell Timing: Sets the amount of delay at the Apron is stationary at the end of the bend
before returning.
5. Manual/Auto Switch: Selects between either manual of automatic operation.
6. Inch Down: When pressed lowers the apron when in “Manual” mode.
7. Auto Start: Once “Auto” (#5) is selected, then when pressed completes one cycle.
8. Bend Up: When in “Manual “ mode raises the apron when pressed
9. Pump Stop: Stops the hydraulic pump
10.Pump Start: Starts the hydraulic pump
11.Open Height: Sets the opening of the clamp beam when “Auto” is selected.
12. Left Foot Pedal: When pressed lowers the clamping beam approx 10mm.
13. Right Foot Pedal: When pressed raises the clamp beam.
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SETTING BENDING ANGLE VALUE
(For Auto mode bending,)
NOTE: The set value (SV) is not the angle in degrees it will bend, it is just a reference number,
that the bending beam will go to repeatedly. The angle will change due to spring-back of the
work piece depending on material type, thickness and length.
(“SV”= Set Value or what the PV value will stop at when it reaches it.)
Ensure the bending beam is all the way down.
Press the red “RST” button on the display, and this will reset the “PV” (P Value) to Zero
To get a set bending angle, the set Value (SV) will have to be worked out by “trial and error”
bending and then recorded elsewhere for future use.
Value/Angle relationships will also change depending on type and thickness of material being
bent.
Press the blue right hand pointing arrow. The S Value column of the display will start ashing.
Each time you press this arrow, it will move the ashing digit across to the next one.
When you reach the digit you want to change, then stop. Then press the up arrow until you
reach the required number going from zero up to 9 and back to zero etc.
Repeat until the correct value is set.
Then press the “MOD” button.
The display is now set to bend to this Value. The machine Auto will count up by the P Value and
stop when it equals the S Value you have set on the display.
RST
MOD
4.3 CONTROLLER OPERATION
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MANUAL BENDING
NOTE: You can use the PV display to show you the position you have bent to in manual
This can be used to repeat a bend on following manual bent pieces the same size”
qEnsure the emergency stop button is released. (STOP)
qStart the hydraulic pump. (PUMP START)
q Set the BENDING ANGLE Display “SV” to 200.00 SEE “SETTING DISPLAY”
q Switch the MANUAL/AUTO to Manual
q Raise the top work clamp
q Ensure the top blade clearance is set for correct thickness of material to be bent
q Put the work piece in to the correct mark on job or use the back gauge to set length of
bend.
q Clamp the work piece in the machine
WARNING: DO NOT BEND THE WORK PIECE OR RAISE THE BENDING ARM UNTIL THE WORK IS
FULLY CLAMPED AND OR TOP CLAMP IS DOWN. FAILURE TO ABIDE BY THIS COULD CAUSE DAM-
AGE TO THE MACHINE.
NB There is a safety limit switch tted to the machine to prevent the bending beam from
operating unless it is in the down position.
To Bend
q Press BEND UP foot pedal, the bending beam will come up until it is released at required
bend angle.
Check angle and re-bend further if needed.
qPress “BENDING DOWN” to lower bending beam.
AUTOMATIC BENDING.
q Ensure emergency stop button is released.
q Start hydraulic pump
q Set Bending angle on BENDING ANGLE Display (“S Value) to the required Value! See “SETTING
BENDING ANGLE VALUE (please note: the set value is not the angle in degrees it will bend, it is
just a number that the bending beam will go to repeatedly.)
q Switch to manual/Auto switch to Auto
q Raise the top work clamp
q Ensure top blade back clearance is set to thickness of material to be bent
q Put work piece in to correct mark or use back gauge to set length
q Clamp work piece
WARNING.. DO NOT BEND WORK PIECE OR RAISE BENDING ARM UNTIL WORK IS CLAMPED AND
OR TOP CLAMP IS DOWN. FAILURE TO ABIDE BY THIS COULD CAUSE DAMAGE TO THE MACHINE.
To Bend in auto
q Press Auto/Start button.
The bending beam will now come up to the set value, return to zero and you can then release
manual hand clamp.
To Auto bend again you must turn switch to neutral position and then back to Au
4.3 CONTROLLER OPERATION Cont.
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4.4 START UP
a. Check that the electrical supply has been connected.
b. Check that the hydraulic tank has been lled with hydraulic oil.
c. Ensure that the emergency stop button is in the released position.
d. Ensure the isolating switch is on and power light is illuminated
e. Press the hydraulic pump button to start the electric motor
4.5 BENDING
a. Set the bend angle according to your requirements.
b. Ensure the clamp gap has been set according to the thickness of the plate.
c. Once the steel plate is in position for bending then the choice of inching or cycle mode
can be selected.
d. Do not bend material which has been welded or deformed.
Inspection Frequency Responsible
Lubrication of all grease
points Daily Operator
Lubrication of clamp ngers
and machine surfaces Daily Operator
Guards for physical damage Daily Operator
Machine xing bolts against
loosening Weekly Operator
Oil Leakage in cylinders Weekly Operator
Oil leakages in hoses, pipes
and hydraulic parts Weekly Operator
Hydraulic uid levels Weekly Operator
Cylinder connecting bolts
against loosening Weekly Operator
Safety and limit switches
against loosening Weekly Operator
Electrical terminal connec-
tions Annually Electrician
5. MAINTENANCE
5.1 TYPE AND FREQUENCY OF INSPECTIONS
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5.2 CHANGING THE HYDRAULIC OIL
The eciency of the Metalmaster machine relies on the hydraulic system being well maintained
All precautions must be taken to keep the hydraulic system clean at all times.
Fig. 5.1
To change the oil
1. Remove the 4 socket head cap screws holding the
tank cover and remove the oil tank cover. (Fig.5.1)
2. Using an appropriate pump, drain out the old oil
completely making sure nothing is left.
3. Using a clean cloth wipe out the tank to make sure
any dirt or foreign objects have been removed.
4. Using a pump, ll the tank with new 46 grade
hydraulic oil until the oil reaches the centre mark
of the oil indicator. The oil level must be checked
regularly to make sure it is always kept at the same
level.
5. When changing oil, keep the oil tank clean and
free of dirt at all times..
6. Oil must be changed after the rst 200 working
hours of use, and then after every 1000 working
hours.
5.2 CHANGING THE HYDRAULIC OIL FILTER
From time to time the hydraulic oil lter may need to be changed to ensure the quality of the
system. Filters used by the manufacture may change from model to model but basic procedure
is listed below.
To change the oil
1. Remove the 4 socket head cap screws holding the
tank cover and remove the oil tank cover. (Fig.5.1)
2. Using an appropriate pump, drain out the old oil
completely making sure nothing is left.
3. Using a clean cloth wipe out the tank to make sure
any dirt or foreign objects have been removed.
4. Unscrew the lter o the intake tube (Fig.5.2) at the
bottom of the tank and replace with a new lter.
5. Using a pump, ll the tank with new 46 grade
hydraulic oil until the oil reaches the centre mark
of the oil indicator. The oil level must be checked
regularly to make sure it is always kept at the same
level.
5. When changing the oil lter, keep the oil tank clean
and free of dirt at all times.
6. The oil lter should be changed after 1000 hours of
operation
Fig. 5.2
22/07/2019
Instructions Manual for PB-422L (S576)
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