Air Inlet Filter - Cyclonic; Alternative Oils - Gardner Denver TR20 Installation Operating & Maintenance Manual

2
1
1. Indicator
2. Reset button
Figure 14b. Blockage indicator
NOTE
Filter elements should be
replaced every 12 months or
sooner if restriction is indicated
by the blockage indicator.
No. Description
1. Top Cover
2. Filter Element
3. Filter Blockage Indicator
4. Vacuator Valve
5. Cover Retention Latches
NOTE
ISO 150 EP grade oils from
different manufacturers can be
mixed.
4990497003 Date: 11/2016
Maintenance
5.5 Air Inlet Filter
The blockage indicator is designed to show/hold the maximum inlet blockage
encountered. It is set to show 100% blockage when the inlet depression reaches
37mbar. The filter element should be replaced/cleaned before the indicator enters
the red portion of the blockage scale.
If the indicator valve has entered the red portion of the scale:
1. Press the reset button and re-check with the compressor operating.
2. If the blockage indicator still returns to red, the filter must be cleaned or
replaced as below.
Note: Stop the machine before cleaning or replacing filter elements.
Cleaning the filter casing / element
The air filter is fitted with a blockage indicator to show when the filter requires
cleaning. If this indicator shows red when the compressor is operating then the filter
must be cleaned or replaced as follows:
To clean the casing, it may be necessary to unbolt the filter casing from the vehicle.
1. Remove the top cover by releasing the retaining latches and withdraw the
filter element.
2. Clear any dirt/debris from inside the casing and the top cover.
3. Clean the filter element by blowing compressed air through it from the inside
outwards.
4. Replacement of the element/top cover is a direct reversal of above.
Figure 14a. Replacing Air Filter
5.6

Alternative Oils

The TR20 is supplied filled with GD AEON S150 synthetic oil. Other ISO 150 Poly alpha
Olefin (PAO) grade oil with EP (extreme pressure) additives can theoretically be used,
but may affect the long term reliability of the machine. All oils should be checked
that they are mixable with both mineral and other Synthetic PAO variants used
without a reduction in performance.
TR20 Installation, Operating & Maintenance Manual Page 24