Endura AZ20 Oxygen Systems
Endura AZ20 – Pumped Reference Air Unit
3 Installation
INF09/027
Issue 3
3
3 Installation
3.1 Siting
Site the pump adjacent to the probe – see Fig. 3.1 for
environmental requirements.
3.2 Mounting
Overall dimensions are shown in Fig. 3.2. Mount the pump on a
flat secure surface using the 3 mounting lugs
A
.
3.3 Electrical Safety
Fig. 3.1 Environmental Requirements
Fig. 3.2 Dimensions and Mounting Lug Locations
IP66 (NEMA 4)
55 °C
(131 °F)
–20 °C
(–4 °F)
A
98
(3.9)
R3.2 (0.1 )
210 (8.
3
)
17
9 (7
.0)
150
(5.9)
71
(2.8)
Dimensions in mm (in.)
Warning.
Isolate the incoming power supply before accessing the
pump or making connections.
The pump is not fitted with a switch therefore a
disconnecting device such as a switch or circuit breaker
conforming to local safety standards must be fitted to
the final installation. It must be fitted in close proximity
to the pump within easy reach of the operator and must
be marked clearly as the disconnection device for the
pump.
Electrical installation and earthing (grounding) must be
in accordance with relevant national and local
standards.
Use cable appropriate for the load currents: 3-core
cable rated 5A and 90 °C (194 °F) minimum, that
conform to either IEC 60227 or IEC 60245. The
terminals accept cables from 0.8 to 2.5 mm
2
(18 to 14 AWG).
The pump conforms to Installation Category II of IEC
61010.
After installation, there must be no access to live parts,
for example, terminals.
If the pump is used in a manner not specified by the
Company, the protection provided by the equipment
may be impaired.
All equipment connected to the pump's terminals must
comply with local safety standards (IEC 60950,
EN601010-1).
Caution.
Always route power cables and air lines separately.
Make connections only as shown.
Maintain Environmental Protection at all times.
Ensure the seal and mating surfaces are clean to
maintain environmental rating.
Conduit connections must provide cable entry sealing.
Ensure cable glands are tightened after wiring. Do not
overtighten the plastic cable glands to avoid destroying
their sealing properties. Initially, tighten finger-tight, then
a further
1
/
2
to
3
/
4
turn using a suitable spanner or
wrench.
Fit a blanking plug where required.
Inductive loads must be suppressed or clamped to limit
voltage swings.
