Technical Knowledge
Establish standard operating procedures for the daily cleaning and regular deep maintenance of concrete laser leveling

Standard operating procedures for concrete laser leveling: Cleaning and maintenance
1. Purpose
Standardize the daily cleaning and regular maintenance of concrete laser leveling machines to ensure that the equipment is in the best technical condition, prevent abnormal wear and failure, improve equipment utilization and economic benefits, and eliminate potential safety hazards.
2. Scope of application
This program is applicable to all operators, maintenance personnel and equipment managers of concrete laser leveling machines.
3. General Safety Rules
All cleaning and maintenance work must be carried out after the equipment has completely stopped, the engine has been turned off, and the key has been removed.
For the operation of hydraulic and electrical systems, it must be confirmed that the system has been completely depressinized.
Wear appropriate personal protective equipment, including but not limited to: protective gloves, safety glasses, and anti-crush work shoes.
When working under the equipment, it is essential to use safety brackets or jack brackets for reliable support to prevent the equipment from accidentally falling.
A warning sign reading "Under maintenance, Do not start" must be placed on site.
Part One: Daily Cleaning and Inspection Procedures (To be carried out after each shift's work
Objective: Remove the dirt accumulated on the day, inspect the basic condition, and get ready for the next day's work.
| Serial number | Assignment project | Standards and Requirements |
| 1 | Preliminary cleaning of the entire machine | Use high-pressure water guns or manual tools (scrapers, brushes) to remove large blocks of concrete and mud adhering to the chassis, scrapers, vibrators, walking tracks/wheels. Note: Avoid directly flushing the engine air intake, radiator, bearing housing, electrical interfaces and laser receiver with high-pressure water. |
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2
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Fine cleaning of key areas | Under the scraper and vibrator: They must be thoroughly cleaned to ensure there is no hard concrete buildup, guaranteeing no resistance during the next start-up. |
| • Laser receiver sensor: Wipe it clean with a soft cloth to ensure there is no dirt blocking it. | ||
| • Piston rods of each cylinder: Before retracting, wipe their surfaces clean with a soft cloth to prevent cement particles from scratching the seals. | ||
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3
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Cleaning of the walking system | • Crawler type: Clean the crushed stones and mud blocks in the crawler chain links, drive wheels and guide wheels. |
| • Wheel type: Remove debris from the tire treads. | ||
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Post-operation inspection | • Leakage inspection: Visually inspect the hydraulic pipelines, joints, and cylinders for any oil leakage. |
| • Loosening check: Inspect whether the main connecting bolts (such as scraper and vibrator mounting seats) are loose. | ||
| • Visual inspection: Check for obvious cracks or deformations in structural components. | ||
| 5 | Park | Park the equipment on a flat and solid ground. Retract the cylinder to lift the scraper off the ground. Disconnect the power supply (if any). |
Part Two: Regular Deep Maintenance Procedures
Objective: Conduct systematic inspection, adjustment, lubrication and component replacement to fundamentally maintain equipment performance.
A. Periodic maintenance plan
Note: The following cycles are general recommendations. Please be sure to refer to the final regulations in the equipment manufacturer's manual. The maintenance cycle should be shortened under harsh working conditions.
| Maintenance cycle | Maintenance items | Standards and Requirements |
| 50 working hours per week | 1. Lubrication and maintenance | Apply the specified lithium-based grease to all lubrication nozzles (grease nozzles) until the new grease is squeezed out from the seal. Key points include: |
| All bearing housings (vibrator bearings, walking wheel bearings). | ||
| All pins and joint joints (lifting connecting rods, adjusting mechanisms). | ||
| • Clean up any spilled old butter and keep it clean. | ||
| 2. Fastening inspection | Use a torque wrench to check and tighten the key bolt connections according to the specified torque value. | |
| 3. Hydraulic system inspection | Check the oil level in the hydraulic oil tank. If it is insufficient, add hydraulic oil of the same grade. | |
| Check whether the color and smell of the hydraulic oil are normal. | ||
| 250 working hours per month | 1. Hydraulic oil breathing filter | Clean or replace the air breather filter element on the top of the fuel tank. |
| 2. Electrical system inspection | Check whether the battery terminals are corroded or loose and clean them. | |
| Check whether the joints of each line are firm and whether the wire harnesses are worn or aged. | ||
| Check whether all control switches and sensors are working properly. | ||
| 3. Laser system calibration | Check the consistency between the laser emitter and the control system of the leveling machine, and calibrate it if necessary. | |
| Every six months / 1,000 working hours | 1. Replacement of hydraulic oil and filter elements | Completely replace all the hydraulic oil. |
| All hydraulic filter elements (suction oil filter, return oil filter, pressure oil filter) should be replaced simultaneously. | ||
| • Clean the interior of the hydraulic oil tank (a special cleaner and dough can be used for adhesion). | ||
| 2. Engine maintenance | • Replace the engine oil, oil filter, fuel filter and air filter. | |
| Check and adjust the tension of the fan belt. | ||
| 3. Inspection of the walking system | Check the wear of the tracks/tires and adjust the tension of the tracks. | |
| • Check the drive motor and reducer. | ||
| 4. In-depth inspection | Check the installation and tightness of major components such as hydraulic pumps, motors, and multi-way valves. | |
| Check whether there are any scratches or rust on the surface of the piston rods of each cylinder and whether the seals are intact. | ||
| 2,000 working hours per year | Comprehensive and systematic inspection and calibration | It is recommended to be carried out by professional service engineers, including: |
| Check whether the pressure and flow rate of the hydraulic system meet the standards. | ||
| • Conduct a comprehensive inspection of the electrical control system and sensors. | ||
| • Conduct flaw detection on structural components (if necessary). |
B. Long-term storage and maintenance procedure (more than one month)
Thorough cleaning: Wash thoroughly according to the daily procedure and dry completely.
Rust prevention treatment: Apply rust prevention grease to all exposed metal surfaces (such as cylinder piston rods, guide rails, bolt threads).
Oil protection: Add hydraulic oil to the upper limit and carry out anti-rust treatment on the engine crankcase and fuel system.
Tires/Tracks: Lift the equipment up to lift the tires/tracks off the ground.
Battery: Disconnect the negative terminal of the battery, take it out and store it in a dry and well-ventilated place, and charge it regularly.
Parking environment: Store in a dry and well-ventilated indoor area and cover with tarpaulin to prevent dust.
4. Records and Responsibilities
After each cleaning and maintenance is completed, the date, working hours, maintenance content, replaced parts and the person who performed the task must be recorded in detail on the "Equipment Maintenance Record Form".
The operator is responsible for daily cleaning and inspection, while the mechanic or equipment administrator is responsible for regular deep maintenance.
Managers should regularly check the completeness and authenticity of maintenance records.
Summary
Establishing and strictly implementing this standard operating procedure can transform the management of concrete laser leveling machines from "passive maintenance" to "active prevention", which is the core link to achieve refined equipment management and cost reduction and efficiency improvement. Please combine this program with the manufacturer's manual of your specific device model for the best results.
Note: The parameters provided in this document are for reference only and are not mandatory. Due to differences in technical characteristics between different brands and models of laser levelers, please consult the manufacturer for a suitable solution before actual operation. This reference document assumes no responsibility for any issues arising from failure to follow the manufacturer's instructions.
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About the Author: Shandong Vanse Machinery Technology Co., Ltd.
Shandong Vanse Machinery Technology Co., Ltd. is a high-tech manufacturer specializing in concrete construction machinery, including laser screeds and related equipment. The company integrates R&D, production, and global sales, with products exported to over 60 countries and widely used in infrastructure projects worldwide.
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