Table Of Contents

• The optimum performance and life time of ...
• Pressure loss in hydraulic systems
• Noise in hydraulic systems Causes...
• General problems in hydraulic systems
• Insufficient flow delivery in hydraulic systems
• High temperatures in hydraulic systems

The optimum performance and life time of the pump & cartridge directly depend on proper installation & maintenance of the products, therefore kindly note the following :

1. Oil reservoir should be thoroughly cleaned before use.
2. Use suitable hydraulic oil: SAE10w of 24cst viscosity.
3. Keep the oil reservoir free of all sorts of contamination.
4. Never mix motor oil with hydraulic oil.
5. In cold regions, do not use solvent to dilute hydraulic oil.
6. Make sure the internal filter of the reservoir is suitable for the system & is always clean & intact.
7. The valves put before & after the pump must be intact & efficient.
8. There must be sufficient oil in the reservoir at all times.
9. Shaker plates must be placed inside the reservoir to protect the filter from contamination.
10. Before placing the cartridge into the cover, the pump cover must be washed with oil or gas oil, and then the cartridge is installed, fixing the 2 pins in their proper places.
11. After placing the cartridge, fill up the pump cover with hydraulic oil, preventing any sort of contamination from entering the pump.
12. Check the inlet flange o-ring for air leaks.
13. The pump and electro- motor shafts must be aligned .Their being out of alignment causes noise & damage.
14. Check the direction of rotation of the cartridge in regard to that of the elector- motor.
15. If you have to change the position of the pumps input & output, note the following:
    * The cartridge pins must not be displaced.
    * The o-ring of the pump cover must be in its proper place.
16. In cold weather conditions, before the oil reaches 30°c, let the system work for 30 min. with no load.
17. The ideal temperature range for the system is 45-55 degrees centigrade.
18. Always use the same oil to fill up the reservoir. Do not re-use oil.
19. Maximum constant pressure for the pump is 175 bars, with a max instant pressure of 210 bars.
20. Before starting up the system, minimize the pressure & speed of the valves put after the pump, in order to lower the shock- especially in cold weather.

Note:

Complying with the above mentioned instructions would ensure longer life & Smooth operation of the product

Pressure loss in hydraulic systems

• Internal leakage of the pump, jacks, valves or hydro motor.
• Malfunction of flow control or (depressurizing) valves.
• Insufficient flow delivery.
• Low oil viscosity.
• Unsuitable hydraulic valves regarding pressure & delivery of the pump.
• Clogging of oil path.

Important note

High pump flow delivery relative to the power of elector- motor & flow of other hydraulic parts would cause excessive noise & higher electricity consumption

Noise in hydraulic systems Causes:

• Incompatible oil filter & pump suction power.
• Presence of air bubbles in oil & foam on its surface.
• Unsealed valves & reservoir connections leading to the pump.
• Incompatible diameters of hose (from reservoir to pump) & pump inlet.
• High pump capacity in relation to jacks & other parts of hydraulic system.
• Misalignment of the pump & motor shafts.
• Cold or thick hydraulic oil.
• Pump vibration due to improper installation.
• Damaged packing seal of the pump.
• Damaged scaling of internal parts of the pump, internal leaks.

General problems in hydraulic systems

Insufficient flow delivery in hydraulic systems

• Unsuitable, soiled or clogged filter.
• Clogging of the inlet pipe.
• Bent or wrong diameter of the pipe leading to the pump inlet.
• Presence of air prior to pump suction.
• Presence of air in oil filter or reservoir.
• Snapping of the shaft or coupling.
• Too low or too high rotation speeds (acceptable range: 600-800rpm).
• Unsuitable hydraulic oil (of high viscosity).
• Malfunction of the pump due to wear & tear.

High temperatures in hydraulic systems

• Out of range max. pressure.
• Pump continuously under pressure.
• Internal leakage
• Low oil volume in the reservoir, regarding the systems need.
• Insufficiency of the cooling system.
• High ratio of pump delivery to required system capacity