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The Leader in Nitrogen Generation Technology
FPS-900-RS O&M Manual
Version: 3; 3/2020
Page 21 of 28
9. Maintenance
WARNING: Whenever doing any maintenance on the system, make sure to power down the
system. Remove the front cover to gain access to the filters.
Note: Annual Filter Replacement Kit (part# FRP-007) and a Preventative Maintenance Box are available
for this unit. Call (888)526-6284 or email [email protected]
9.1. Air Intake Filter
The integrated air compressor of the
N
2
-BLAST
®
FPS-900-RS has an air intake pre-filter. It
prevents particles from entering the compressor housing and damaging internal components.
Replace this filter once per year or every 1,000 hours, whichever comes first. To do so, remove
the pre-compressor filter cap by twisting it clockwise. Remove the old element and use a clean
dry cloth to clean the filter bowl before installing the new element.
9.2. Air Filter replacement
The particulate and coalescing filters are designed to capture particulate and moisture prior to
entering the rest of the system. These filters need to be replaced once per year or every 1,000
hours, whichever comes first.
Follow these instructions to replace filters:
1. Turn off the unit and remove the cabinet cover, by removing four (4) screws.
2. Locate the air filters on the bracket in the middle of the cabinet. See
Figure 5
.
3. Make sure the filters are completely depressurized by checking the pressure gauge.
4. Remove two filter bowls. Do so by turning them counter-clockwise.
5. After removing the filter bowls, rinse debris out of the bowls with warm water.
6. Dry the bowls with a clean dry cloth and replace old O-rings with the new ones provided.
7. Change the filter elements:
a) Particulate Element - Pull the plastic element housing out of the filter bowl. Twist off
the black plastic cover and pull off the particulate element. Lubricate the O-rings and
seals if needed. Install the new element in the reverse order.
b) Coalescing Element - Twist the coalescing element counter-clockwise. Lubricate the
O-rings and seals if needed. Install the new element in the reverse order.
8. After replacing all elements, O-rings and cleaning the bowls, install the bowls back to their
corresponding filter housings.
9. After replacing the filters, put the front cover back on and power on the unit. Once powered
up, the air compressor will turn on and start producing nitrogen. Check the filter bowls for
leaks.
