Routine Checks - ABB Endura AZ20 Manual

Endura AZ20 Oxygen Systems
Endura AZ20 5µm/Oil Coalescing Filter Regulator
4 Installation and Routine Checks
4.1 Preparation
To prepare the filter regulator for use:
1. Fit the air connectors to the filter regulator, using sealing
tape on the threads to ensure an air-tight seal.
2. Mount the filter regulator vertically on a firm, clean, dry
surface using the cradle and brackets supplied.
Warning. Refer to Section 3 before pressurizing the
system.
Caution. Before making connections to the probe:

Refer to the relevant probe manual for flow
requirements.

Flowmeters must be used on probes that do not have
restrictors fitted to regulate both reference air and test
gas flow to the probe – failure to set the correct flows
will result in read errors and possible damage to the
sensor.

4.2 Routine Checks

4.2.1 Filters
Inspect the 2 filters regularly and renew at 12-monthly periods
(or sooner) depending on operating conditions.
4.2.2 3-Way Ball Valve Shut-off / Vent Operation
Before using the filter regulator, familiarize yourself with
operation of the 3-way ball valve shut-off / vent by referring to
Fig. 4.1.
Warning.

The supply line pressure to the probe is vented via the
3-way ball valve shut-off / vent.

Keep clear of the vent when the valve is closed and if
necessary, connect a pipe to the vent and route to a
safe area.
Valve Closed
Venting
Valve Open
Fig. 4.1 3-Way Ball Valve Shut-off / Vent Operation
INF09/029 Rev. C
4.2.3 Manual Drain Valves
Open the manual drain valves on the bottom of the filter
cartridges regularly to drain any contaminants and check air
quality. The frequency of this routine depends on conditions of
operation.
4.3 Filter Components
Item
1
2
3
4
5
6
7
8
9
1
Air In*
*3.5 bar (50 psi) min.
10 bar (145 psi) max.
Table. 4.1 Filter Regulator Main Components
Vented
4 Installation and Routine Checks
Description
Air in connector
(NPT or BSP specified when ordering)
3-Way ball valve shut-off / vent
Regulator (adjustment)
Air out connector
(NPT or BSP specified when ordering)
Oil coalescing filter cartridge
Manual drain valve
Manual drain valve
5µm filter cartridge
Pressure gauge (outlet)
2
Vent Outlet
9
8 7 6
3 4
Air Out
(to Probe)
See
Warning in
Section 2.1
5
3