Suggested exercises and observations
1. Download this filter beta ratings guide.
♦ Complete the filter media selection process to identify the appropriate filter beta rating required.
♦ Compare your predicted rating with that of your example application.
♦ Assess and discuss whether the current level of filtration is appropriate.
2. Download this filter selection guide.
♦ Go to page 20 to see an example of how the filter will be sized at when clean against the clogging indicator switching point.
♦ Identify the clogging indicator on equipment near you or in your project example.
♦ If the clogging indicator has a progressive indication meter, assess to what extent the filter element is already clogged.
3. Download this pressure filter datasheet.
♦ Select the most appropriate filter with a 10 micron element for a flow of 100L/min.
♦ Calculate the total pressure drop under normal running temperature using an HLP46 fluid.
♦ Calculate the total pressure drop at a startup temperature of 10C, using an HLP46 fluid.
4. Download this air filter datasheet .
♦ Go to page 7 to for air breather sizing guidance.
♦ Select the most appropriate filter with a 5 micron element for a flow of 100L/min.
Experiment 1: Environmental conditions will vary throughout the year and in different locations. For example in summer it is likely to be more dry and dusty.
Question 1: Will filtration types and replacement schedules always be the same on identical equipment?
Experiment 2: Different filter elements are often interchangable with the one design of filter housing.
Question 2: Is it acceptable to install a different type element from that specified by the OEM? What would you need to check?
Experiment 3: Air filters are a vital part of the hydraulic system.
Question 3: How can you tell when an element needs to be changed?