Hydraulic Change-Over Procedure

1. First and foremost, fix your leaks. Check the oil inlet seals, O-rings, gaskets and lines for leaks.

2. Drain main hydraulic reservoirs.

3. If possible, change the oil while it is warm so the contaminants will not have time to settle.

4. Drain all main lines (blow air through lines back to main reservoir).

5. Check your seals for compatibility; the recommended material is Viton or other oil-compatible seal materials.

6. Clean hydraulic reservoir as thoroughly as possible.

7. Change or clean all screens.

8. Check and change all filters and breathers.

9. Check and clean the magnetic stick.

10. Fill all hydraulic reservoirs with USDA-H1-authorized hydraulic oil.

11. Make sure all oil fill covers are properly in place.

12. Charge all lines to circulate oil through system.

13. Take oil samples. Oil analysis is excellent for troubleshooting and predictive/preventive maintenance.

14. Continue oil sampling every two weeks until further notice.

15. Continue to monitor filters and screens for contaminants after two weeks of running USDA-H1- authorized hydraulic oil.

Additional Information

• Since viscosity varies with temperature, it is necessary to know and control the actual operating temperatures. Ideal operating temperature range is 120° to 130°F. For every 10 degrees over 150°F, the life of the oil is cut in half.

• Working pressure should be less than 2000 P.S.I.

• Remember, oil is not drawn into a pump; it is pushed in by atmospheric or boost pressure. Check your pump manufacturer recommended start-up operating procedures to avoid cavitation in pumps or motors.

• Make sure that nothing is sitting on top of the power pack units because it will generate heat.

• Keep the oil clean, cool and dry to assure long life hydraulic system performance.

• Remember that price and cost are totally different criteria.

Price is what you pay for a product; cost is the value you get from that product. Other food-grade hydraulic products may be less expensive, but may add to cost by contributing to shortened pump life, reduced oil life, sticking valves and leaks. Choose a proven oil supplier like JAX that stands behind its products. JAX has been working with food-grade hydraulics since 1982.