B800-00-880 Issue D
Page 28 © Edwards Limited 2013. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Technical data
2.10 Indicator LED’s
The nEXT pump has three indicator LED’s, shown in Figure 12.
Note: If an external electrical load is connected to the normal output line, the Normal LED may illuminate.
2.11 Operating and storage environment
Table 13 - Indicator LED’s
LED Description
Normal LED This green LED remains when the pump rotational speed
is above the normal speed setting, irrespective of
whether the pump is accelerating or decelerating.
Status LED This yellow LED flashes with a 50% duty cycle at the
rotational frequency of the pump motor. At high speeds
it appears continuously on.
The LED switches off when the rotational speed is very
low or stopped.
If a service is due, this LED flashes in a sequence to
indicate which service operation is required. Refer to
Section 5.5.
Alarm LED This red LED flashes in a sequence to indicate an error
code if a fail condition is preventing pump operation.
The error codes can be used for fault finding as
described in Section 5.5.
Table 14 - Operating and storage environment
Range Data
Ambient operating temperature range 5 °C to 35 °C
Ambient operating humidity range 10 to 90% RH (non-condensing)
Maximum operating altitude 3000 m
Ambient storage temperature range -30 °C to 70 °C
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