User Guide

7
HX SERIES USER GUIDE
7. Maintenance
Always pay attention to the prescribed service intervals. Proper operation of the lter cannot be assured in case of
non-compliance.
Weekly: Check the oat drain for tightness and proper functioning once a week. You should not hear a permanent
ow noise coming from the drain. If so, the drain must be replaced.
6 months - 1 Year: Element replacements are most often determined by the specic application each lter
is employed in. As energy costs rise, many customers are balancing the cost of energy with the cost of the
replacement element. A new element will contribute less pressure drop than a used element, meaning that less
energy need be purchased to overcome pressure drop. Typically a high-efciency element like those used in the
HX-Series will be changed every 6 mos. to 1 year. While changing the lter element, it is a good idea to check the
oat drain for contamination, and if needed clean it with a soapy water solution.
The following factors can contribute to require a premature element change out: high temperatures, high oil mist
concentration, and high relative humidity. Good lter performance is also dependent on the performance of other
compressed air system components. Only through analysis of your specic system can element changeout intervals
be determined.
7.1 Replacing the Filter Element
Hazard due to a sudden release of pressure!
Depressurize the lter before carrying out any work on the lter! A sudden escape of pressure may
cause serious injuries.
Block compressed air supply to the lter.
Depressurize the lter. To do so, you may have to open the condensate drain at the lter bottom.
Give the lter‘s bowl a full turn in clockwise direction and take it off downwards.
Take out the lter element and dispose of it according to the operating instructions.
Replace seal included in replacement element kit.
Insert the new lter element: The locating tabs t the recesses in the bowl exactly and ensure the
correct seat of the lter element.
Apply a thin coat of lubricant on the thread of the lower housing. Lubricant also included in kit.
Align the bowl vertically below the lter‘s head using the markings and give it a full turn
to fasten it.
If necessary, close the condensate drain and open the pipe to the lter.
Check the lter for leaks.