Description

1. Safety Preparation: Before installation, shut off the elevator’s main power supply and lock the control panel using LOTO (Lockout/Tagout) procedures. Access the elevator pit using a stable platform and wear safety glasses, gloves, and protective footwear to avoid injury from debris or oil.

2. Prepare the Mounting Base: Clean the pit floor mounting area to remove dust, concrete debris, or water. Ensure the base is flat, level (tolerance: ±2mm/m), and capable of supporting the buffer’s impact load (reinforce with concrete if necessary). Mark the mounting hole positions according to the buffer’s base dimensions.

3. Install the Buffer: Position the Nanjing Zhuye Elevator Parts OH series buffer on the prepared base, aligning the mounting holes with the marked positions. Secure the buffer with anchor bolts (M16 for OH-30 series, M20 for OH-70 series) and torque to 45-55 N·m – ensure the buffer is vertical (≤1° deviation) to guarantee proper piston movement.

4. Connect Safety Devices: For OH-30B/70B automatic reset variants, connect the limit switch wiring to the elevator’s safety circuit (follow the elevator manufacturer’s wiring diagram). This switch signals the controller when the buffer is activated, preventing elevator operation until reset.

5. Test and Calibrate: Fill the buffer with recommended hydraulic oil (ISO VG 46) to the specified level (marked on the cylinder). Manually test the piston movement: press the piston fully and release – it should reset smoothly (within 30 seconds for automatic variants). Conduct a load test per local safety regulations: use a test weight to simulate impact and verify deceleration rate and reset function. Confirm the buffer is correctly aligned with the elevator car/counterweight impact plates (clearance: 50-100mm).

• Oil Maintenance: Check the hydraulic oil level monthly and top up if low. Replace the oil annually (or every 2,000 operating hours) to prevent contamination and maintain viscosity. Use only recommended oil grades – incompatible oils can damage seals or reduce buffer performance.

• Leakage Inspection: Regularly check for oil leaks around the piston, cylinder, or valve connections. Tighten loose fittings or replace worn seals immediately to avoid pressure loss.

• Avoid Obstructions: Keep the buffer and pit area free of debris, tools, or water accumulation. Obstructions can prevent full piston movement or cause misalignment during activation.

• No Modifications: Do not alter the buffer’s valve settings, piston stroke, or structural components. Modifications can compromise deceleration performance and void safety certifications.

• High-Traffic Areas: Shopping malls, airports, or high-rise office buildings (elevator operates 12+ hours daily, frequent stops) – replace every 8-10 years. Continuous exposure to pit humidity and potential minor impacts accelerate component wear.

• Medium-Traffic Areas: Residential buildings, hotels, or small offices (8-10 hours daily usage) – replace every 10-12 years.

• Low-Traffic Areas: Villas, industrial facilities, or low-occupancy buildings (4-6 hours daily usage) – replace every 12-15 years, with semi-annual inspections.

• Failed Reset: The piston does not return to its original position within the specified time (manual reset: minutes; automatic reset: <30 seconds) – indicating internal valve blockage or oil leakage.

• Oil Contamination: The hydraulic oil appears cloudy, discolored, or contains metal particles – a sign of internal component wear.

• Physical Damage: Dented cylinder, bent piston rod, or cracked base – which can affect structural integrity during impact.

• Reduced Performance: Load test results show deceleration rate exceeding 1.0g or inconsistent pressure buildup – indicating valve or seal degradation.

• Leakage: Persistent oil leaks despite seal replacement – suggesting cylinder wall damage.

• Universal Compatibility: Designed to fit most elevator brands (Mitsubishi, KONE, Schindler, Otis) and load capacities, making it a versatile replacement solution.

• Safety-Certified Performance: Meets global safety standards for deceleration, impact load resistance, and durability, ensuring compliance with local regulations.

• Rigorous Quality Assurance: 100% pre-delivery testing, including impact simulation, leakage detection, and reset function validation.

• Expert Technical Support: Our team of safety engineers provides professional guidance on installation, testing, and maintenance via phone or on-site visits.

• Fast Delivery: We maintain a large inventory of OH series buffers to fulfill emergency replacement orders within 24-48 hours, minimizing elevator downtime.