- Thermocouple (0ºc -100ºc) ± 5ºC
- Flow meter (5 – 50 lpm) ±0.01 lpm
- Pressure Gauge (0 – 250 bar) ± 20 bar
- Tachometer
General requirements
- The hydraulic fluid should be identified by type and viscosity in accordance with ISO 3448:1992.
- All pumps must be tested with proper oil grade.
- All hydraulic pipelines, filters and strainers should be new.
- All instruments should be accurate with proper calibration record.
- Any unusual noise, vibration or instability generated by pump is cause for rejection.
- Oil leakage from any part of pump is cause for rejection
- Inlet pressure : Max 225 mm of mercury
- Oil temp. : 65 ± 5ºC
- Rated pressure : Max. 210 bar
Test procedure
- Mount the pump on the test bed and check that all the bolts are properly tightened.
- Check leakage from all the adapters and joints.
- Operate pump and blow Relief valve for some time till temperature of oil reaches to 65 ± 5ºC
- Adjust 1500±10 rpm of pump and check flow of oil on inline tester at pressure 0 bar to 200 bar by increase the pressure in step of 20 bar.
- Adjust 2100 ±10 rpm of pump and check flow of oil on inline tester at pressure 0 bar to 200 bar by increase the pressure in step of 20 bar.
- Note the flow, temperature and pressure values from inline tester.
- After noting all the parameters, release pressure relief valve.
- Half hour pressure regulating test
- Adjust pump rpm up to 1500 ±10, and pressure in delivery line up to 180 bar on inline tester and note down flow of oil at 65±5º C.
- At same pressure note down flow of oil at time interval of every 5 min for half an hour.
- Release pressure relief valve.
Observations: Record data in pump performance test
Analysis: Find out pump volumetric efficiency(%) = Flow observed*100/(Pump cc/rev. * RPM)
Acceptance Criteria: Pump efficiency should not be less than 90%
