6. OIL RESERVOIR 

The reservoir capacity for industrial applications should be three to five times the open loop flow per minute being drawn from the reservoir. For mobile applications, the reservoir should be sized for not less than 0.75 time the open loop flow (The volume for rams and actuators must be allowed for by providing adequate air space and breathing)

The pump suction line should draw oil from a point not less than 100mm above the tank bottom to avoid sludge deposits from entering the pump. The return line should be submerged to limit frothing of oil. The suction and return connections should be positioned as far apart as possible and separated by baffles. So that oil circulation is promoted within the tank to assist convection cooling and allow air entrained in the oil to dissipate.

7. FILTRATION
The fluid should be filtered during top-up and continuously during operation, to achieve and maintain a cleanliness level of ISO17/14.

8. FLUIDS 
Most superior grade mineral oil based hydraulic fluids are suitable for use with BOSS gear pumps. The primary consideration in the selection of Hydraulic Fluid is expected oil temperature extremes that will be experienced in service. When choosing the hydraulic fluid, these temperature extremes must be considered to obtain the most suitable temperature viscosity characteristics. For optimum performance the viscosity should be maintained in the 97-456SUS(20-100CST) range. Limiting viscosities of 4545 SUS(1000CST) maximum and 52 SUS(8CST) minimum should not be exceeded. It many be possible in some application to run on other types of special fluids, contact SSH for more details before use.

9. OPERATING TEMPERATURE 
The pumps re designed to operate between 0 deg and 80 deg C. Intermittent temperatures may vary between -20 deg to 10 deg C if the fluid being pumped is suitable for such operations. For higher temperature applications contact SSH for more details before use.