Product Overview

Table 5: Repair Parts
Description Code No.
Coalescing Filter Elements
10 SCFM (4.7 L/s) A-4110-604
20 SCFM (9.4 L/s) A-4000-604
40 SCFM (18.9 L/s) A-4000-605
Charcoal Filter Elements
10 SCFM (4.7 L/s) A-4000-632
20 SCFM (9.4 L/s) A-4000-633
Filter Auto-Drain Kit
(All Coalescing Filters)
A-4000-6010
Servicing Procedure for Coalescing Filters
All coalescing filters are equipped with an automatic
drain from which accumulations of entrapped liquids
are automatically blown out. The filter element should
be replaced when the leaving air pressure gauge
(mounted on the PRV station charcoal filter head)
indicates less than 50 PSIG (350 kPa) the differential
pressure between the leaving and input gauges is 15
PSI (105 kPa) or more, or after one year of service -
whichever occurs first.
To replace the filter element, refer to Fig. 17 and
proceed as follows:
1. Turn the air supply OFF.
2. Depress the lever on the filter bowl clamp and
turn 1/8 of a revolution. Drop the clamp, bowl
guard, and bowl to expose the filter element
which needs to be replaced.
3. Remove the old filter element by turning it
counterclockwise.
4. Clean the small screen around the drain seat of
the automatic drain seat of the automatic drain
valve by turning the filter bowl upside down and
tapping it lightly on a table top.
5. Clean the bowl and drain valve assembly using
household detergent or any solvent that is not
harmful to polycarbonate.
6. Install the new filter element and bowl O-ring,
then reinstall the bowl and guard.
A-4110-604 A-4000-604 A-4000-605
(10 SCFM) (20 SCFM) (40 SCFM)
Fig. 15: Coalescing Filter Elements
A-4000-633 A-4000-632
(20 SCFM) (10 SCFM)
Fig. 16: Charcoal Filter Elements
6 A-4000 Product Bulletin