INSTRUCTIONS FOR USE
I
Instructions for use
CONTENTS
1 - GENERAL 3
1.1 - GENERAL SAFETY REGULATIONS 3
1.1.1 - STANDARD SAFETY DEVICES 3
1.2 - FIELD OF APPLICATION 3
1.3 - MAIN PARTS 3
1.4 - OVERALL DIMENSIONS 3
1.5 - TECHNICAL DATA 4
2 - HANDLING AND LIFTING 4
3 - START - UP 5
3.1 - ELECTRICAL CONNECTION 5
3.2 - PNEUMATIC CONNECTION 5
3.3 - ADAPTER MOUNTING 5
3.4 - WHEEL MOUNTING 5
3.5 - WHEEL GUARD ASSEMBLY AN
3.6 - LIFT 5
4 - CONTROLS AND COMPONENTS 6
4.1 - CONTROL PANEL AND DISPLAY 6
4.2 - AUTOMATIC DISTANCE AND DIAMETER GAUGE 6
5 - USE OF THE WHEEL BALANCER 7
5.1 - DATA SETTING 7
5.2 - RESULT OF MEASUREMENT 8
5.2.1 - STATIC UNBALANCE 8
MODIFYING SET DIMENSIONS 8
5.2.2 -
5.2.3 - EXACT POSITIONING OF THE ADHESIVE WEIGHT BY MEANS OF THE GAUGE WITH CLIPS 8
5.2.4 - OPPOSITE POSITION 9
5.2.5 - SPLIT FUNCTION (HIDDE
5.2.6 - UNBALANCE OPTIMIZATION 10
5.2.7 - AUTOMATIC MINIMIZATION OF STATIC UNBALANCE 10
6 - SET UP 11
6.1 - MENU 11
6.2.1 - RIM DISTANCE GAUGE 12
6.2.2 - DIAMETER GAUGEE40 M
6.3 - BALANCING MACHINE CALIBRATION 13
7 - ERRORS 14
7.1 - INCONSISTENT UNBALANCE READINGS 15
8 - ROUTINE MAINTENANCE (see exploded drawings) (for non specialized personnel only 15
8.1 - TO REPLACE THE DRIVING PULLEY 15
8.2 - TO REPLACE THE BRAKE PAD 15
8.3 - TO REPLACE THE FUSES 15
8.4 - MAINTENANCE OF THE PNEUMATIC CIRCUIT 15
D ADJUSTMENT (OPTION) 5
N ADHESIVE WEIGHTS) 9
12
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1 - GENERAL
1. ► 1 - GENERAL SAFETY REGULATIONS
The machine should only be used by authorized and suitably trained personnel. ▪
Do not use the machine for purposes other than those specifi ed in this manual. ▪
The machine should not be modifi ed in any way except for those modifi cations explicitly carried out by ▪
specialised personnel.
Never remove the safety dehyvices. Any work on the machine should only be carried out by specialised ▪
personnel.
Carefully clean the coupling surfaces before performing any operation. ▪
Avoid using strong jets of compressed air for cleaning. ▪
Use alcohol to clean the plastic panel or shelves (AVOID LIQUIDS CONTAINING SOLVENTS). ▪
Before starting the wheel balancing cycle, make sure that the wheel is securely locked on the adapter. ▪
The machine operator should avoid wearing clothes with fl apping edges. Make sure that unauthorized ▪
personnel do not approach the machine during the work cycle.
Avoid placing objects inside the cabinet as they could impair the correct operation of the machine. ▪
1.1.1 - STANDARD SAFETY DEVICES
►
Low rotation speed. ▪
STOP push button for stopping the wheel under emergency conditions. ▪
The safety guard (option) of high impact plastic is with shape and size designed to prevent risk of ▪
counterweights from fl ying out in any direction except towards the fl oor.
A microswitch prevents starting the machine if the guard is not lowered and stops the wheel whenever ▪
the guard is raised.
Protection system on LIFT control. ▪
1.2 - FIELD OF APPLICATION ►
The machine is designed for balancing wheels of cars and motor vehicles weighing up to 250 kg. It can be operated
in the temperature range of 0° to + 45°C.
1.3 - MAIN PARTS ►
WHEEL GUARD
b
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E
N
T
E
R
g
o
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o
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T
A
R
T
a
b
d
S
T
O
P
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A
T
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C
A
L
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A
T
I
C
CONTROL PANEL
AND DISPLAY
SHAFT ASSEMBLY
LIFT
LIFT CONTROL
AUTOMATIC GAUGE
PEDAL
1.4 - OVERALL DIMENSIONS ►
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1.5 - TECHNICAL DATA ►
Single-phase power supply 115 / 230 V 50/60 Hz
Protection class IP 54
Max.power consumption
Balancing speed 100 r.p.m. for cars - 70 r.p.m. for trucks
Cycle time for average wheel 7÷20 seconds
Balancing accuracy 1 gram for cars / 10 grams for trucks
Position resolution ± 1.4 °
Average noise < 70dB (A)
Rim-machine distance 0 - 335 mm (400 mm max. presettable)
Rim width setting range 1.5” ÷ 20” or 40 ÷ 510 mm
Diameter setting range 10” ÷ 30” or 265 ÷ 765 mm
Max. wheel weight 250 kg.
Max. wheel diameter 1300 mm
Max. wheel width 495 mm (super single)
Min/max. compressed air pressure 8 ÷ 10 Kg/cm
Air consumption per cycle 15 l. (at 8 Kg./cm2)
1,1 Kw
2
approx. 0.8 to 1 Mpa;
approx. 8 to 10 BAR;
approx. 115 to 145 PSI.
2 - HANDLING AND LIFTING
TO LIFT THE MACHINE, LEVER ONLY ON THE BASE WHERE THE 3 SUPPORT POINTS ARE LOCATED.
N
EVER, UNDER ANY CIRCUSTANCE, APPLY FORCE TO OTHER POINTS SUCH AS THE SPINDLE, HEAD, OR ACCESSORY SHELF.
Check that the balancing machine touches the fl oor at the three support points. •
It functions properly without having to fasten it to the fl oor with wheels weighing up to 160 kg; for heavier •
wheels, fasten it at the points indicated.
Options: Front wheel translation KIT
Ground securing plate KIT
b
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T
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R
g
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o
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A
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a
b
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P
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3 - START - UP
3.1 - ELECTRICAL CONNECTION ►
T
HE ELECTRICAL CONNECTION MUST BE MADE BY SPECIALIZED PERSONNEL. CONNECTION TO THE SINGLE PHASE MAINS MUST
BE MADE BETWEEN PHASE AND NEUTRAL, AND NEVER, UNDERANY CIRCUMSTANCES, BETWEEN PHASE AND EARTH (GROUND).
E
FFICIENT EARTHING (GROUNDING) IS ESSENTIAL FOR CORRECT MACHINE OPERATION. THE MANUFACTURER DECLINES
RESPONSIBILITY AND WARRANTY IN THE EVENT OF INCORRECT CONNECTION.
ALL
Before connecting the machine to the mains through relative cable, check that the mains voltage matches the one
shown on the nameplate at the back of the balancing machine. Rating of the electrical connection should be on the
basis of the machine electrical power consumption (see nameplate).
The machine mains supply cable should be fi tted with a plug conforming to current regulations. ▪
It is recommended to provide the machine with its own electrical connection through a slow acting safety switch ▪
rated at 4 A (230 V) or 10 A (115 V).
When connection is made directly to the main control panel without using any plug, it is advisable to padlock the ▪
main switch of the balancing machine in order to limit its use to authorized personnel only.
3.2 - PNEUMATIC CONNECTION ►
The machine must be connected to the compressed air supply and must not be used if the pressure is below 5 kg/
cm2 (5 bar; 72 PSI; 0.5 MPa). The maximum input pressure is limited to 10 kg/cm2 (~10 Bar; ~145 PSI; ~1 MPa).
The spinning and braking device is calibrated at the factory and cannot be modifi ed.
3.3 - ADAPTER MOUNTING ►
The wheel balancer is supplied complete with cone ►
type adapter for fastening wheels with central bore.
The threaded terminal is fi tted according to the dra
wing; it can be removed to fi t optional adapters.
It can be removed to fi t optional adapters.
3. ► 4 - WHEEL MOUNTING
The wheels should be fastened with one of the numerous adapters manufactured by the manufacturer (see enclosed
brochures). Incorrect centering inevitably causes unbalance.
3.5 - WHEEL GUARD ASSEMBLY AN ► D ADJUSTMENT (option)
Fasten the components to the base as illustrated in the specifi c exploded drawing1.
The positions of these guards can be adjusted using the special screws accessed from inside the main support2.
With th3. e guard closed check that the microswitch prod has slipped into place on the ring; to this end, adjust the
angular position of the control ring if necessary.
3.6 - LIFT ►
The function of the lift is to make it easier to mount the wheel on the balancer spindle with the minimum manual effort.
The pneumatic circuit of the machine has been designed to give the lift considerable fl exibility of movement in any
position along its travel. The lift is driven with the control pedal.
DURING LIFT MOVEMENT, KEEP AWAY FROM ITS RANGE OF ACTION.
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4 - CONTROLS AND COMPONENTS
4.1 - CONTROL PANEL AND DISPLAY ►
5
6
16
6
15
19
12
16
17
10
3
11
7
1-2 Digital readouts, AMOUNT OF UNBALANCE, inside/outside
3-4 Digital readouts, POSITION OF UNBALANCE, inside/outside
5 Indicators, correction mode selected
6 Indicators, selection made
7 Push button, unbalance reading < 5 g (25 oz)
8 Push button, car/truck selection
9 Push button, selection STATIC unbalance
10 Push button, SPLIT (unbalance spread)
11 Push button, FUNCTIONS MENU
12 Push button, menu selection confi rmation
13 Push button, cycle start
14 Push button, emergency/home
15 Push button, position repeater
16 Manual dimension setting buttons
17
19 Distance gauge position indication
20 Push button to select possible corrections
18 Digital display of the static unbalance value
1
9
Push button to select grams/ounces as unit of measure for the unbalance
18
20
8
13
4
14
2
O ▪
NLY USE THE FINGERS TO PRESS THE PUSH BUTTONS.
N
EVER USE THE COUNTERWEIGHT PINCERS OR OTHER POINTED OBJECTS. ▪
4.2 - ► AUTOMATIC DISTANCE AND DIAMETER GAUGE
Allows measuring the distance from the machine and the diameter at the point of application of the counterweight.
The same gauge allows proper positioning of the counterweights inside using the specifi c function.
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5 - USE OF THE WHEEL BALANCER
5.1 - DATA SETTING ►
Press the button
Press the button
The balancing data is set by means of an "intelligent" automatic gauge; confi rmation of the measurement and the
position appear on the display. The round part of the gauge must rest on the rim where the weight will be positioned.
While the gauge is moving the following appears
; LED on → balancing machine set in car mode
; LED on → balancing machine set in truck mode
a b
;
when the measurement has been stored
a) standard weights: When only one measurement is made, the machine interprets the presence of a rim with clip-
on weight correction
The width value (b) must be set with the buttons
measured with the compass gauge provided.
b) adhesive weights: Make two successive measurements on two correction planes inside the rim.
The balancing machine automatically interprets that the correction will be made with adhesive weights and
the following appears:
. The correct measurement is that which can be
b
.
For a different combination of the type or position of the weights on the rim, use the button
.
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5.2 - RESULT OF MEASUREMENT ►
Unbalance display pitch: ►
Car = 1/5 g (.1/0.25 Oz) Truck = 10/50 g (.25/1 Oz)
When
Car = 1 g Truck = 10 g
.1 Oz .25 Oz
Unbalance display threshold ►
Car = 5 g (.4 Oz) Truck = 50 g (2 Oz)
Inside correction Outside correction
After performing a balancing spin, the amounts of unbalance are shown on the digital readouts.
Digital readouts with LED lit up indicate the correct angular wheel position to mount the counterweights (12 o’clock
positi
on).
If the unbalance is less than the threshold selected, 0 is displayed instead of the unbalance; with it is possible
to read the values below the threshold chosen.
5.2.1 - STATIC UNBALANCE
►
It is selected by pressing and is shown on the central display. The position is indicated on the displays 3 and 4.
is pressed, the unbalance is displayed with pitch:
The value can always be displayed (see
5.2.2 - ► MODIFYING SET DIMENSIONS
If the wheel dimensions have been entered incorrectly, the parameters can be modifi ed without repeating the balan-
cing spin by pressing :
(select
pull out the gauge to repeat the measurement
5 ► .2.3 - EXACT POSITIONING OF THE ADHESIVE WEIGHT BY MEANS OF THE GAUGE WITH CLIPS
FI
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FE
SETUP); in this case, to see the position press .
access parameter modifi cation →
to modify: (a) distance, (b) width, (d) diameter
→ to obtain the new measurement
or:
→ to obtain the new measurement.
Press ▪
Fit ▪ the correction weight in the specifi c gauge seat with the
adhesive part facing upwards
Bring the wheel into correct angular position for the plane ▪
to be corrected
Pull out the gauge: the approach of the weights to the correc- ▪
tion positions is indicated by the LEDs number 19
When the weight application distance has been reached a beep ▪
is sounded (can be deactivated).
Turn the gauge until the correction weight adheres to the rim ▪
using the weight pusher.
Fianco interno Fianco esterno ►
To cancel this function, press button again.
5.2.4 - OPPOSITE POSITION
►
In th ► e normal balancing condition the weight is applied at 12 o'clock and shown
on the display.
The balancing machine can also indicate the correction position on the bottom ►
vertical line (see SETUP to select the O.P. function).This is very useful for cor
rection of light alloy rims with adhesive weights where the rim is normally clea
ned; the counterweight is pressed onto the rim surface in a visible area
5.2.5 - SPLIT FUNCTION (HIDDE ► N ADHESIVE WEIGHTS)
The SPLIT function is used to position the adhesive weights behind the wheel spokes so that they are not visible.
This function should be used in ALU mode where the adhesive weight is applied on the outside. Input the wheel
dimensions and do a spin.
2
1
Turn the wheel to the outside unbalance correction position ▪
as indicated by the machine
1
2
2
1
1
2
2
1
Position one spoke at 12 o'clock (e.g. 1) and press ▪
Following the rotation direction indicated on the display, posi- ▪
tion spoke 2 at 12 o'clock and press
Position the wheel as indicated by the LEDs. ▪
The unbalance is indicated on the right-hand display
Repeat the operation for the other spoke ▪
relative paragraph) the correction position at 6 o'clock is also
indicated, so that the operator can easily insert the correction
weight by pressing it downward.
To return to normal unbalance display, press any button.
NOTE: The distance between the spokes must be at least 18° and at most 120° (if not, the errors 24 or
25 appear).Spokes with irregular or inconstant angles can be compensated.
When the OPPOSITE POSITION function is enabled (see ▪
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x
g
g
x
°
x
g
g
x
g
g
g
g
x
g
g
x
x
g
g
x
x
g
g
x
5.2.6 - UNBALANCE OPTIMIZATION ►
This function serves to reduce the amount of weight to be added in order to balance the wheel ▪
It is suitable for static unbalance exceeding 30 g. ▪
It improves the residual eccentricity of the tyre. ▪
This operation is required if no unbalance has been measured previously; otherwise go to the next step
Mark with chalk a reference point on the adapter and rim ▪
With the aid of a tyre changer, turn the rim on the tyre by 180° ▪
Refi t the wheel with the reference mark coinciding between rim and adapter ▪
RH di ▪ splay: percentage reduction
LH display: actual static unbalance which can be reduced by matching ▪
Mark the two positions of the rim and tyre, and turn the rim on the tyre until ▪
the positions correspond in order to obtain the optimization results shown on
the display.
CANCEL OPTIMISATION IN ANY PHASE.
5.2.7 - AUTOMATIC MINIMIZATION OF STATIC UNBALANCE ►
This program is designed to improve the quality
ssx
ddx
g
g
5500°
of balancing without any mental effort or loss of
time by the operator. In fact by using the normal
commercially available weights, with pitch of 5 in
every 5 g, and by applying the two counterweights
which a conventional wheel balancer rounds to
ssx
ddx
g
44 g
ssx
ddx
g
g
33 g
ssx
ddx
g
g
11 g
ssx
g
ddx
g
66 g
the nearest value, there could be a residual static
unbalance of up to 4 g. The damage of such
g
approximation is emphasized by the fact that static
unbalance is cause of most of disturbances on the
vehicle. This new function, resident in the machine,
automatically indicates the optimum entity of the
weights to be applied by approximating them in an
“intelligent” way according to their position in order
to minimize residual static unbalance.
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6 - SET UP
6.1 - MENU ►
See chapter on unbalance optimisation
diameter unit of
measure mm/inch
width unit of
measure mm/inch
start from
guard closing
approximates
1-5g 0.1-0.25oz
approximates
10-50 g 0.25-10oz
acoustic signal
activation on/off
Opposite position
activation on/off
Static always present
activation on/off
screen-saver duration
(in minutes)
Calibration of automatic RIM DISTANCE gauge
Calibration of automatic DIAMETER gauge
RETURN TO MEASUREMENT SCREEN
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6.2 - AUTOMATIC GAUGES CALIBRATION
6.2.1 - RIM DISTANCE GAUGE ►
►
►
Leave the distance gauge in rest position ▪
and press
Pull out the gauge up to the adapter fl ange ▪
and press
C ▪ ORRECT CALIBRATION
Return the gauge to rest position.
The wheel balancer is ready for operation.
N.B.: In the event of errors or faulty operation, the writing
gauge to the rest position and repeat the calibration operation exactly as described above. If the
error persists, contact the Technical Service Department. In the event of incorrect input in the rim
distance gauge calibration function, press
6.2.2 - DIAMETER GAUGE
► E40 m
►
►
“r.P .”: appears on the display : shift the
to cancel it.
m ►
Plac ▪ e the round part of the gauge terminal on the fl ange as shown in the fi gure
and press
The number 352 ± 3° appears on the left display . ▪
Turn the gauge downward position the ▪
round part of the gauge terminal at 40 mm
(radial distance) from the fl ange as indicated
in the fi gure; alternatively use one of the cones
provided as shown in the images
40 mm
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The nu ▪ mber 274 ± 3° should appear on the left display. The calibration is
already correct.
If not, press the ▪
appears on the left display.
Return the gauge to rest position. ▪
button holding the gauge still at 40 mm: the number 274
6.3 - BALANCING MACHINE CALIBRATION ►
To calibrate the machine, operate as follows:
Fit a medium-sized wheel with steel rim on the shaft. Example: 6” x 15” (± 1”) best with less then 20 g unbalance ▪
Take the exact measurements of the wheel mounted as described in ▪
RESETTING OF INCORRECT DIMENSIONS WOULD MEAN THAT THE MACHINE IS NOT CORRECTLY CALIBRATED, THEREFORE
P
ALL SUBSEQUENT MEASUREMENTS WILL BE INCORRECT UNTIL A NEW SELF-CALIBRATION IS PERFORMED WITH THE CORRECT
DIMENSIONS!
Perform a manual spin under normal conditions ▪
Add a sample weight on the outside in any angular position. ▪
Sample weight: 60 g. (2.00 .oz) for car
300 g. (10.0 .oz) for truck
DATA SETTING.
Shift the sample weight from the outside to the inside keeping the same angu ▪
lar position.
Turn the wheel until the sample weight is in the 12 o’clock position ▪
END OF CALIBRATION ▪
CANCELS CALIBRATION IN ANY PHASE. ▪
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7 - ERRORS
During machine operation, various causes of faulty operation could occur. If detected by the microprocessor, they appear
on the display as follows:
ERRORS CAUSES CONTROLS
Black The wheel balancer does not turn on. 1. Check proper connection to the mains.
Err. 1 No rotation signal. 1. Check belt tautness.
Err. 2 Too low speed during measurement.
Err. 3 Too high unbalance. 1. Check the wheel dimension setting.
Err. 4 Rotation in opposite direction.
Err. 5 Guard open
Err. 7 /
Err. 8 /
Err. 9
Err. 11 Too high speed error.
Err.14/
Err.15/
Err.16/
Err.17/
Err. 18/
Err. 19
Err.20 Wheel at standstill. The wheel is at a
Err.21 Motor on for more than 15 seconds. 1. Check functioning of the phase encoder.
Err.22 Maximum number of spins possible for
Err. 24 Distance between the spokes smaller
During the unbalance measurement
revolutions, the wheel speed has fallen to
below 42 rpm.
After pressing [START], the wheel
starts turning in the opposite direction
(anticlockwise).
The [START] pushbutton was pressed
without fi rst closing the guard.
NOVRAM parameter read error 1. Repeat machine calibration
The average spinning speed is more than
240 rpm.
Unbalance measurement error. 1. Check functioning of the phase encoder.
standstill for more than one second after
START.
the unbalance measurement has been
exceeded.
than 18 degrees.
2. Check and if necessary replace the fuses on the power board.
3. Replace the computer board.
2. Check functioning of the phase encoder and, in particular, the reset
signal.
3. Replace the phase encoder.
4. Replace the computer board.
1. Check that a vehicle wheel has been mounted on the wheel
balancer.
2. Check belt tautness.
3. Check functioning of the phase encoder and, in particular, the reset
signal.
4. Replace the computer board.
2. Check the sensor connections.
3. Run the machine calibration function.
4. Mount a wheel with a more or less known unbalance (less than 100
grams) and check the machine response.
5. Replace the computer board.
1. Verify the connection of the UP/DOWN - RESET signals on the
phase encoder.
2. Check the bearing/spring of the phase generator
1. Reset the error.
2. Close the guard.
3. Verify the function of the protection switch.
4. Press the [START] button.
2. Shut down the machine.
3. Wait for at least ~ 1 min.
4. Restart the machine and check proper functioning.
5. Replace the computer board.
1. Check if there is any damage or dirt on the encoder disc.
2. Check functioning of the phase encoder and, in particular, the reset
signal.
3. Replace the computer board.
2. Check the sensor connections.
3. Check the machine earthing connection.
4. Mount a wheel with a more or less known unbalance (less than 100
grams) and check the machine response.
5. Replace the computer board.
1. Check functioning of the phase generator.
2. Check the connections on the power board.
3. Replace the computer board.
2. Check the connections on the power board.
3. Replace the computer board.
1. Check that a vehicle wheel has been mounted on the wheel
balancer.
2. Check belt tautness.
3. Check functioning of the phase encoder and, in particular, the reset
signal.
4. Replace the computer board.
1. The minimum distance between the spokes where to split the
unbalance must be more than 18 degrees
2. Repeat the SPLIT function increasing the distance between the
spokes.
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Err. 25 Distance between the spokes greater
than 120 degree
1. The minimum distance between the spokes where to split the
unbalance must be less than 120 degrees
2. Repeat the SPLIT function increasing the distance between the
spokes.
7.1 - INCONSISTENT UNBALANCE READINGS ►
Sometimes after balancing a wheel and removing it from the balancing machine, it is found that, mounting it on the
machine again, the wheel is not balanced.
This does not depend on incorrect indication of the machine, but only on faulty mounting of the wheel on the adapter
i.e. in the two mountings the wheel has assumed a different position with respect to the balancing machine shaft centre
line. If the wheel has been mounted on the adapter with screws, it could be possible that the screws have not been
correctly tightened, i.e. crosswise one by one, or else (as often occurs) holes have been drilled on the wheel with too
wide tolerances. Small errors, up to 10 grams (0.4 oz) are to be considered normal in wheels locked by a cone; the error
is normally greater for wheels fastened with screws.
If, after balancing, the wheel is found to be still out-of-balance when refi tted on the vehicle, this could be due to unba-
lance of the car brake drum or very often due to the holes for the screws on the rim and drum sometimes drilled with
too wide tolerances.
In such case a readjustment could be advisable using the balancing machine with the wheel mounted on the car.
8 - ROUTINE MAINTENANCE (see exploded drawings) (for non specialized personnel only
Always disconnect the machine from the mains before carrying out any operation.
8.1 - TO ► REPLACE THE DRIVING PULLEY
,
The drive pulley is guaranteed by the manufacturer for approximately 20000 runs.
A spare pulley is found inside the base (see photograph).
If necessary, to replace the pulley, proceed as follows:
- Remove the head and the weight holder shelf, taking care not to damage the electric wires
- Remove the retaining screw on the pulley in order to replace it
8.2 - TO REPLACE THE BRAKE PAD ►
Back-off the two screws fastening the worn brake pad to the motor mounting brake. Securely fi x the new brake pad
by tightening the screws.
8 ► .3 - TO REPLACE THE FUSES
Remove the weight holder shelf to gain access to the power supply board where the fuses are located. If fuses
require replacement, use ones of the same current rating. If the fault persists, contact Technical Service.
8 ► .4 - MAINTENANCE OF THE PNEUMATIC CIRCUIT
It is important to periodically clean the compressed air fi lter.
N.B.: DRAIN FREQUENTLY ANY CONDENSATE BUILT UP IN THE FILTER BOWL VIA RELATIVE
VALVE.
NONE OF THE OTHER MACHINE PARTS REQUIRE MAINTENANCE.
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