Maintenance Tips for Industrial Cooling Systems of Water Well Drilling Rig in Low Temperatures

Use antifreeze coolants: Water-cooled systems need antifreeze. Its freezing point should be 10℃ below local lows. For example, Northeast China uses -40℃ antifreeze in winter. It stops water tanks and engine blocks from cracking. Drain old fluid fully when replacing to avoid dilution.

Prevent cooling system freezing: If temps drop below -10℃ after shutdown, drain all coolant (without antifreeze). Or idle the engine for 10 minutes first. Let water hit 50℃+ before stopping; residual heat prevents freezing. A rig once left coolant in -15℃. Next day, its water tank cracked, costing 5,000 yuan to fix.

Adjust heat dissipation and check pipes: Add insulation covers before radiators to reduce airflow in cold. This shortens engine warm-up time. A rig with covers in -20℃ cut warm-up from 20 to 8 minutes. Cold makes rubber pipes hard and brittle. Check joints regularly; replace cracks fast. A coolant pipe once cracked at -10℃, causing leaks and engine overheating.