MAHLE RTI NTF-515 (Rev A) - Manual (Page 12)

MAINTENANCE
CLEAN CHANGE
Indicator
5
6 0 -8
0
3 7 4 -0
0
Part Action Frequency
Filter Element Replace Yearly or when indicator on the filter
head moves to the CHANGE area as
shown in the illustration to the right.
Automatic Drain Clean When required
... IMPORTANT ...
The condition of the Filter Element (mounted on rear of unit) can only be checked when shop air is
connected to the unit and it is in the FILL TIRE mode of operation with Nitrogen being generated
and filling the tank. It may be necessary to press the trigger on the fill wand to cause the tank
filling. At all other times the Indicator will not be visible.
The Filter Element must be changed when the indicator moves into the CHANGE area and at least
annually to protect the membrane warranty.
REPLACE FILTER ELEMENT
Disconnect the air supply.
Let the system depressurize until the air pressure gauge reads 0 PSI.
Unscrew the bleed screw (F) slowly to ensure that the filter is
depressurized.
Turn the filter bowl (E) counter- clockwise and pull the bowl from the
filter housing (A).
Unscrew the blue knob (D).
Remove the old filter element (C).
Clean the sieve (B) and the filter house, if necessary.
Install a new filter element (C).
Assemble the parts in the reverse order.
Note: A periodic check of the automatic drains is necessary to ensure maximum membrane life. To
verify float is functioning correctly, open the filter bowl by turning one quarter turn counter-
clockwise. Inspect for water or oil, an inactive float will be submerged, an active float will not. If
float is found to be inactive follow clean automatic drain procedure or if necessary replace with
part number 026-80386-00.
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