This document provides the instruction, use, and maintenance manual for the RAVAGLIOLI S.p.A. wheel balancers, specifically models G4.140R, G4.140WS, G4.140WSLB, and GP4.140WS. These machines are designed for balancing car and light transport wheels by fitting counterweights to reduce or eliminate vibrations.
Function Description
The wheel balancers are primarily used to detect and correct unbalance in vehicle wheels. This is achieved by measuring the wheel's unbalance and then indicating the precise locations and weights of counterweights to be applied. The machines offer various balancing programs and measurement acquisition methods to suit different wheel types and operator preferences.
Key components include:
- Monitor (10): Displays operational information, balancing programs, and measurement results. Available in standard and touch-screen versions.
- Threaded Chuck (4) / Pneumatic Chuck (2): Mechanisms for mounting the wheel onto the machine's spindle. Pneumatic chucks offer automated clamping.
- Distance-Diameter Caliper Arm (3): Used for rapid automatic wheel balancing program selection and entry of wheel dimensions (distance and diameter).
- Protection Guard (5): A safety device that protects the operator from projections during wheel spin and prevents automatic start if raised.
- Weight Holding Bridge (1) & Grippers for Weight Fitting (11, 21): Tools for handling and applying weights.
- External Data Gauge (8, 28) / Automatic Width Measuring Device Unit (15): Devices for measuring wheel width, with some models featuring automatic detection.
- Ultrasound Run-out Device (27, 29): An optional feature on some models for detecting rim/tire imperfections.
- Laser Pointers (14, 30, 31): Optional features for precise weight positioning at "6 o'clock" or "12 o'clock" on the rim.
Important Technical Specifications
- Max. absorbed voltage: 200 W
- Voltage: 110-230 V
- Phases: 1
- Frequency: 50/60 Hz
- Rotation speed: < 100 rev/min
- Balancing precision: 1 g
- Rim width: 1.5 ÷ 22 inches
- Rim diameter: 10 ÷ 30 inches (manually up to 34 inches)
- Max. wheel diameter: 44 inches
- Cycle time: 6 seconds
- Sound emission level: < 70 dBA
- Max. wheel weight: 80 kg
- Recommended air pressure (for pneumatic models): 8 ÷ 10 bar
- Weight of machine:
- Model with wheel external data gauge: 155 kg
- Models with automatic width measuring device: 150 kg
- Pneumatic model with automatic width measuring device: 160 kg
Usage Features
The machines offer a user-friendly interface with a control panel (keyboard or touch-screen) for setting balancing programs and acquiring measurements.
Balancing Programs:
- Static: For balancing with adhesive weights on the outer and inner sides of the rim.
- Dynamic: For balancing with two clip adhesive weights on the outer and inner rim.
- ALU-S, ALU-S1, ALU-S2, ALU-1, ALU-2, ALU-3, ALU-4: Programs specifically designed for light alloy rims, offering various weight fitting options (adhesive, clip, hidden).
- ECO-WEIGHT mode: An optional program to reduce weight consumption and optimize balancing by fitting a single weight at a predetermined distance.
- SPLIT mode: Useful for high dynamic unbalance, allowing division of a large correction weight into two smaller weights hidden behind spokes.
- Weights hidden behind spokes mode: Splits correction weights on the outer side into two parts to be hidden behind rim spokes, improving aesthetics.
- Matching mode: Offsets strong unbalance by matching tire and rim unbalance, reducing the total weight needed.
- PAX mode: A special procedure for balancing wheels using the "PAX System" with two adhesive weights on the rim's inner side.
- Recalculation function: Allows changing the balancing program and recalculating weights without re-spinning the wheel.
- Motorcycle mode: Enables balancing of motorcycle wheels with a distance caliper extension kit.
Measurement Acquisition:
- Rapid setting with caliper arm: Automatically selects programs and enters measures by bringing the caliper arm into contact with the rim.
- "Measurements acquisition" screen page: Allows manual selection of programs and entry of wheel dimensions.
- Automatic width measuring device: Automatically measures wheel width when the protection guard is closed.
- Manual setting: For cases where automatic data gauge is disabled, allowing manual entry of diameter, width, and distance.
Weights Positioning:
- Distance-diameter caliper arm with grippers: For precise placement of adhesive weights.
- Fixed laser at "6 o'clock" (optional): Indicates the exact point for weight application.
- Mobile laser pointer at "6 o'clock" (standard): Indicates the exact point for weight application, with positioning in depth at the operator's discretion.
- "12 o'clock" laser emitter (optional): Uses two laser pointers to indicate the center line position for clip weights.
Maintenance Features
The manual emphasizes the importance of routine maintenance for ensuring the machine's efficiency and correct functioning.
- Daily/Weekly Cleaning: Essential for removing tire powder and other waste materials using a vacuum cleaner. Compressed air should not be used.
- Lubrication: Parts that could be damaged from drying out should be lubricated during long storage periods.
- Safety Checks: Periodic checks (at least monthly) of safety and protection devices are mandatory.
- Electrical Checks: Before starting, ensure power line specifications match machine requirements, main power components are in good condition, the electrical system is properly grounded, and features a cutout with differential protection.
- Air Connection Checks (for pneumatic models): Ensure the compressed-air system provides filtered and de-humidified air at the recommended pressure.
- Calibrations: The machine offers various calibration procedures to maintain accuracy:
- Chuck "0" (zero) calibration: Ensures the spindle is unloaded and balanced.
- Weight measurement sensors calibration: Calibrates the sensors with a balanced wheel and known weights.
- Gauges calibration: Calibrates the distance-diameter caliper and external data gauge.
- Mobile laser pointer calibration (standard on some models): Calibrates the laser pointer for accurate weight positioning.
- Touch screen monitor calibration (optional): Calibrates the touch screen for precise input.
The manual strictly advises that all mechanical and pneumatic interventions be carried out by professionally qualified staff, and electrical work by expert and professional personnel. Unauthorized modifications or use of non-original components will invalidate the warranty.
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