© Edwards Limited 2017. All rights reserved. Page 11
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Technical data
A735-01-880 Issue C
2.3 Mechanical data
2.3.1 General
2.3.2 Sound and vibration data
2.3.3 Construction
All surfaces of the pump which are exposed to the pumped gases are free from copper, zinc and cadmium. Exposed
components include: anodised aluminium scrolls, aluminium housing, nickel-plated inlet and exhaust ports, PTFE
composite tip-seals, various stainless steel parts and fluorocarbon elastomer seals.
Other materials of construction include steel, copper, hydrocarbon lubricant and chemically resistant polymers.
2.4 Electrical data
Note: Time-lag fuses should be used, as current transients can exceed the rated values.
Table 6 - General mechanical data
Parameter nXDS
Overall dimensions (L x W x H) 432 x 282 x 302 mm
Maximum tilt angle 10 degrees
Nominal rotational speed 1800 rpm (30 Hz)
Mass (maximum) 6i - 26.2 kg
10i - 25.8 kg
15i - 25.2 kg
20i - 25.6 kg
Inlet connection NW25
Outlet connection NW25
Table 7 - Sound and vibration data
Parameter nXDS
Sound pressure, measured at ultimate vacuum 1 metre from the end of the pump
to ISO 3744
52.0 dB (A) ± 2.5
Declared dual number noise
emission values according
with ISO 4871
Vibration: measured at the inlet port (ISO 3744) Class 1C…< 4.5 mms
–1
(rms
radial)
Table 8 - Electrical ratings for continuous operation
Pump Supply (Vac rms) Phase Frequency (Hz) Input current (A rms)
All variants
100 - 127 ± 10% Single 50 - 60 10
200 - 240 ± 10% Single 50 - 60 6
Table 9 - Recommended fuses
Area Voltage Rating
UK 230 V 10 A, 250 V a.c. rms
Europe 230 V 10 A, 250 V a.c. rms
US 110 V 13 A, 250 V a.c. rms
Japan 100 V 13 A, 250 V a.c. rms
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