Liangchi (Liang Chi) cooling towers are widely used in industrial cooling systems, including plastic manufacturing, chemical plants, food processing, HVAC and power stations. The circulating pump acts as the heart of the cooling tower system, responsible for continuous water circulation. Long-term operation under humid, high-temperature conditions easily triggers various pump failures. Timely Liangchi cooling tower pump repair and regular maintenance can effectively avoid unexpected production shutdowns and extend pump service life.
Common Failures of Liangchi Cooling Tower Circulating Pumps
Most breakdowns of Liangchi circulating pumps stem from wearing vulnerable components. Below are the typical faults we encounter most frequently.
1. Mechanical Seal Leakage
Water leakage at the pump shaft is the most common issue for Liangchi pumps.
Root Causes of Seal Leakage
Aging of mechanical seals, impurities in cooling water causing surface abrasion, improper installation, cavitation or long-time dry running.
Professional Solutions
Replace the original matching mechanical seal, adjust installation coaxiality and optimize on-site water quality treatment.
The pump runs normally but no water flows inside the cooling loop.
Possible Reasons
Air trapped inside the pump body, leaky suction pipeline, blocked filter or low water level in the cooling tower basin.
Quick Fixes
Exhaust air from the pump chamber, check and tighten pipeline connections, clean the suction strainer regularly.
Our Professional Liangchi Pump Repair Service
We provide one-stop repair solutions for all series Liangchi cooling tower circulating pumps, covering disassembly inspection, component replacement, dynamic testing and after-sales support.
Core Service Items
✅ Complete fault diagnosis before repair to find root causes ✅ Supply high-quality interchangeable Liangchi pump spare parts: mechanical seals, bearings, impellers, pump shafts and motor components ✅ Precision assembly, shaft alignment and running test after maintenance ✅ Support off-site workshop overhaul and on-site emergency repair service ✅ Cost-effective alternative: professional repair vs expensive full pump replacement
Service Workflow
Step 1 – Fault Survey & On-site Inspection
Our technicians collect operation data, check noise, leakage and current to confirm damaged parts.
Step 2 – Disassembly & Comprehensive Cleaning
Take apart the pump unit, remove dirt, scale and corrosive substances inside the pump casing.
Step 3 – Parts Replacement & Precision Assembly
Swap broken vulnerable parts, calibrate concentricity between motor and pump shaft.
Step 4 – Running Test & Acceptance
Carry out trial operation to verify flow, pressure, noise and leakage before delivery.
Step-by-Step Preventive Maintenance for Liangchi Cooling Tower Pumps
Daily and periodic maintenance can greatly cut down repair frequency and prolong pump service life.
Weekly Routine Inspection
Key Inspection Points
Check water leakage, abnormal noise, vibration and surface temperature of the pump body.
Quarterly Maintenance (Every 3–6 Months)
Maintenance Checklist
Inspect bearing temperature, replenish lubricant, clean suction filter and remove pipeline sediment to prevent cavitation and blockage.
Annual Overhaul
Required Work Items
Disassemble the pump partially, check impeller abrasion, test motor winding insulation and tighten all connecting bolts.
Repair vs Replace: How to Make the Right Decision
Many factory managers struggle to choose between repairing the existing pump or purchasing a brand-new Liangchi pump.
Choose Professional Repair If:
Only vulnerable parts (seals, bearings, impellers) are damaged; pump casing and main shaft remain intact
The pump model still matches your cooling tower system requirements
The unit is less than 5 years old
Choose New Pump Replacement If:
Conditions for Upgrading
The pump casing has cracks, the shaft suffers severe bending, or the pump has operated for more than 8 years with frequent recurring failures.
Contact Us for Liangchi Pump Technical Support
If your Liangchi cooling tower pump suffers leakage, noise, insufficient flow or motor failure, feel free to contact us. We offer professional technical consultation, fast repair turnaround and genuine-compatible spare parts to restore your cooling system quickly and minimize production downtime.
