Zebra Technologies 7309 manual System Operation & Maintenance, Installation & Usage Guidelines

FM60-7309 Operator’s Manual

Chapter 4 System Operation & Maintenance

4.0Installation & Usage Guidelines

1.Inspect the unit to make sure it is in good operat- ing condition.

2.Fill the coalescing tank with 3 gallons of water to fill the waste discharge pipe column. NOTE: If the coalescer tank is not pre-filled, oils will enter this column and your first waste discharge may contain oil until this column fills with water-based fluid.

3.Secure the filtered oil return hose to your pre- ferred holding vessel using the magnet, pro- vided.

4.Install your preferred fluid intake attachment, ac- cording to the guidelines in Section 3.0, quick- connecting it to the fluid intake hose.

5.Connect your air hose to the air connection fit- ting.

6.Lift the air regulator knob and adjust until the pressure is approximately 10-20 psi. NOTE: You will need to adjust this pressure higher as the filters fill with debris, if there is a blockage in a line or fitting, or there is a loss of vacuum pressure due to an improper seal. In each of the previous cases, it is recommended to correct the problem and not use excessive pressure to operate the system. This will ensure a proper flow rate for maximum oil/water separation.

4.1Oil Accumulation for Ultrafiltration & Waste Discharge

Once the fluid is drawn into the coalescing tank, it will begin to separate into two main layers. The oil com- ponent will float towards the top of the tank and wa- ter-based fluids will accumulate near the bottom of the coalescing tank. The degree of this separation will be strictly determined by these factors:

•The strength of the water-based fluids anti-emulsi- fication components (as in metalworking fluid, aka coolants)

•The age and quality of the water-based fluid to be manually discharged

•The age and quality of the oil to be ultrafiltered

•Chemical instabilities caused by other additives en- tering fluid pool

•The flow rate of the coalescing system

Maintain a regulated flow rate so it provides for a proper hold time for all fluids to separate, usually 1-2 gallons per minute.

If there is not a complete separation of the oil and water portions, then a slower flow rate may be necessary, as your fluids have lost the ability to gravity separate within 10-20 minutes. You may notice a third layer which does not completely separate at all. These are called inverse layers, and are generally caused by high-pressure sys- tems which further emulsify oils into one another. Con- sider this layer as waste and discharge it regularly.

The Snapdragon Sierra is not guaranteed to separate a straight oil from another straight oil and/or tramp oils. Before reusing any straight oil, verify its integrity.

Manually discharge the wastewater portion to a waste container, via the ball valve, so as not to recirculate it through the ultrafilter and into your preferred holding vessel. NOTE: We recommend maintaining a waste water level of about a third of the tank heighth to main- tain the separated fluid layers. ALWAYS discharge the waste fluid while the pump is running to prevent vacuum loss in the waste discharge pipe.

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