3 Installation
4
INF09/027 Rev. D
| Endura AZ20 oxygen monitor | Pumped reference air unit
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
Dimensions in mm (in.)
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
21
0 (8.3)
179 (7.0
)
150
(5.9)
71
(2.8)
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.
