Start-up Procedure: Never start a new pump or one after a major overhaul under load. Allow it to run unloaded for 10–30 minutes first, especially in low-temperature environments, to fully warm up the pump and ensure normal oil circulation before loading.
Oil Cleanliness: Hydraulic oil contamination is a major cause of premature wear in gear pumps. It is recommended to install an oil filter with a filtration accuracy of 80–100μm on the suction line and a filter with a filtration accuracy of ≤25μm on the return line, and clean or replace them regularly.
Oil Selection: Mineral hydraulic oil is recommended. HC-8# diesel engine oil can be used in winter, and HC-11# diesel engine oil in summer. The recommended operating temperature range is -10℃ to 70℃.
Pressure and Temperature Monitoring: The system must be equipped with a safety valve to prevent overpressure. During operation, continuously monitor the pressure gauge reading, oil temperature (ideally maintained between 15–65℃), and any abnormal noise or vibration to detect faults promptly. Avoid idling and overloading: Prolonged cavitation or overload operation is prohibited, as this will accelerate internal wear, leading to decreased volumetric efficiency, overheating, and even pump damage.
