In the high-stakes world of concrete production, a single hour of unplanned downtime can cost thousands in lost labor and wasted material. Whether you are operating an HZS90 stationary plant in the heat of Riyadh or a mobile plant in the humid Philippines, rigorous maintenance is the only way to protect your ROI.

Based on 20+ years of engineering feedback, Xingye Machinery has compiled this essential maintenance protocol to keep your JS-series mixers and batching systems running at peak efficiency.

1. Daily Hygiene: The "Concrete Residue" Silent Killer

Concrete buildup inside the mixer doesn't just reduce volume; it increases the load on the motor and creates "dead zones" that compromise mix consistency. After every shift:

• Internal Flush: Clean the mixing drum, blades, and discharge gate. Ensure no residual concrete hardens on the shafts.
• External Washdown: Remove dust from sensors and weighing hoppers to ensure measurement accuracy.
• Lubrication: Check all manual and automatic lubrication points. Insufficient grease in the shaft-end seals is the leading cause of JS-series mixer failure.

2. Weekly Technical Inspections

While daily checks are operational, weekly checks are technical. Focus on the high-wear components that directly affect concrete quality.

Component	Check Action	Standard/Threshold
Mixing Blades & Liners	Measure clearance gap	Maintain 3mm to 8mm gap
Screw Conveyor	Check for vibration/noise	Inspect hanger bearings
Pneumatic System	Drain water from air tanks	Check for 0.4-0.6MPa pressure
Weighing Sensors	Visual inspection of cables	Ensure zero-point stability

3. Climate-Specific Resilience

Regional environmental factors are often overlooked in generic maintenance manuals. Xingye Machinery recommends these localized adjustments:

The Middle East & Africa (Extreme Heat)

In temperatures exceeding 40°C, motor heat dissipation is critical. Ensure all electrical cabinet cooling fans are functional and filters are clear of sand. Use high-viscosity gearbox oil (VG320 or similar) to maintain lubrication film strength under high thermal loads.

Eastern Europe & Central Asia (Cold Weather)

When operating in sub-zero temperatures, the primary risk is the pneumatic and water systems. After use, purge all moisture from the air lines to prevent ice blockages in the solenoid valves. For winterized batching plants, ensure the heating system for the aggregate bins is inspected before the first frost.

4. Long-Term Idle Protocols

If your project is pausing for more than 30 days, "parking" the plant incorrectly can lead to seized bearings and rusted silos. Action: Empty all cement silos, grease all exposed metal surfaces with rust-preventative oil, and disconnect the main power supply to protect the PLC from grid surges.

5. Drive System & Gearbox Care

The gearbox is the heart of your JS twin-shaft mixer. Monitor the oil level weekly. If you notice metal shavings during an oil change, it indicates misalignment or gear fatigue. Early detection can save the cost of a full gearbox replacement (approximately 15-20% of the mixer's total value).

Looking to optimize your plant's performance or need specific spare parts? Explore our HZS-Series solutions or contact our engineering team for a customized maintenance schedule.