Standardized Operation Procedure for Wet Spray Car Operators
Release time:
2026-02-21
Source:
Author:
Summary:
To ensure the safety, efficiency, and controllable quality of wet spray carriage operations, operators must follow the standardized operating procedures. This procedure covers three stages: pre-operation preparation, in-operation execution, and post-operation disposal. Please adhere to these procedures strictly.
I. Pre-Assignment Inspection and Preparation
Personal Protective Equipment (PPE): Wear a safety helmet, dust mask (or face shield), safety goggles, work gloves, and non-slip work shoes correctly.
Complete machine status confirmation: (1) The equipment must be parked on a solid surface with its support legs securely stabilized. (2) Walk around the machine once, check that the tire pressure and structural components are normal, and remove any obstacles from the equipment.
Power and Hydraulic System Inspection: (1) Check the fuel or external power source. (2) Check the hydraulic oil level for any signs of emulsification or degradation. Inspect all hydraulic lines and fittings for leaks.
Pump and Jetting System Inspection: (1) Check that there are no foreign objects in the hopper and that the mixing device is operating normally. (2) Check that the delivery pipeline connections are secure and that the spray heads and nozzles are free of blockages or excessive wear. (3) Check the liquid level in the quick-setting agent tank and the pipelines, and confirm that the filter is clean and the pumping function is normal.
Safety Device Testing: Test the functionality of the emergency stop buttons on both the remote control and the device itself to ensure they are effective. Confirm that all safety warning signs are clearly visible.
II. Standardized Operations in Homework
Equipment Startup and Warm-Up: After starting the equipment, let it idle for about 10 minutes to warm up. In a no-load condition, slowly operate all boom movements and the pumping system, and check whether their responses are normal.
Concrete pipe connection and trial spraying: (1) After the concrete mixer truck is in position, the mixing drum should be rotated at high speed for 3 to 5 minutes to ensure uniform workability of the concrete. (2) First, pump mortar or cement slurry to lubricate the pipeline, then perform a trial spray. Based on the results of the trial spray, adjust the air pressure, pumping speed, and the dosage of quick-setting agent accordingly.
Formal jetting operation: (1) Operating posture: Maintain the correct stance and hold the remote control firmly. (2) Spraying parameters: Keep the nozzle perpendicular to the surface being sprayed, at a distance of 0.8–1.2 meters. Move the nozzle at a constant speed along a spiral or S-shaped trajectory to ensure even coverage. (3) Continuous feeding: As much as possible, ensure continuous concrete pumping to avoid prolonged interruptions. Monitor the hopper’s material level and coordinate timely replenishment of materials. (4) Full-process monitoring: Constantly pay attention to whether the equipment’s operating sounds and instrument pressures are normal, observe the smoothness and rebound of the spray surface, and make timely fine adjustments.
Safety Alert: Always ensure that there are no unauthorized personnel within the working radius of the boom. Pay attention to maintaining a safe distance from hazardous environments such as high altitudes and edges.
III. Cleaning and Maintenance After Use
Pipe cleaning: (1) Immediately after finishing the job, pump clean water to flush the delivery pipeline and pumping system until clear water is discharged. (2) Disassemble the spray nozzle and spray tip, thoroughly clean them, and inspect for signs of wear.
Quick-setting agent system cleaning: Clean the quick-setting agent pump and all pipelines to prevent residual liquid from crystallizing and causing blockages.
Equipment Cleaning and Maintenance: (1) Clean the exterior of the equipment and remove any concrete residue from the hopper. (2) Lubricate the specified parts, such as the hinge points of the boom and the slewing support. (3) Inspect and clean the hydraulic oil radiator.
Equipment Return and Recording: (1) Fully retract and lock the boom, and retract the outriggers. (2) Turn off the power and store the remote control properly. (3) Fill out the equipment operation log, recording the volume of work performed this time, any abnormal conditions, and maintenance activities.
Conclusion Standardized operating procedures reflect operators’ safety and skills, and more importantly, they ensure engineering quality and equipment longevity. Each operator is urged to conscientiously follow these procedures, develop good professional habits, and achieve safe, high-quality, and efficient construction operations.
